MODULATION ANALYZER Test and Measurement Equipment USER MANUAL (Version 2.3.x)

Transcription

1 MODULATION ANALYZER Test and Measurement Equipment USER MANUAL (Version 2.3.x) Date: 2012/05/31 Ref: DOC00429 Audemat is a registered trademark. audemat WorldCast Systems Group web: contact@worldcastsystems.com

2 DECLARATION OF CONFORMANCE Established following the Directives 99/5/EC and 2006/95/EC We, hereby, certify that the AUDEMAT MODULATION ANALYZER complies with the dispositions of the European Community Directive for harmonized standards within the Member States related to radio equipment and telecommunications terminal equipment (Directive 99/5/EC) and low voltage (Directive 2006/95/EC). This conformance statement results from respecting EMC and low impedance requirements and from an analysis carried out by AUDEMAT Quality Department, complying with European standards EN , EN and EN Laurence Gex Quality Manager Page 2

3 TABLE OF CONTENTS 1. INTRODUCTION General information About the Audemat Group About the Modulation Analyzer Before beginning Versions and options Laboratory version RF Generator option PRODUCT PRESENTATION List of included accessories Front panel General view Connections Screen TECHNICAL SPECIFICATIONS General specifications Measurement specifications on the RF input RF Demodulated signals Multiplex decoder / AF stereo signals specifications L&R channel noise measurements De-emphasis filters Specifications on the MPX input MPX Power measurement for the MPX channel Multiplex decoding / AF stereo signals specifications L&R channel noise measurements De-emphasis filters Specifications for filters and measurements of non-audio sub-carriers Outputs Composite MPX /AUX output AES output L and R analog outputs Headphone outputs Distortion tool Internal AF generator specifications Internal composite MPX generator specifications Internal RF generator specifications External 10 MHz QUICK START PC System requirements Front panel configuration Connecting to the network to access the remote application Installing the Modulation Analyzer application THE FRONT PANEL APPLICATION Overview Unit configuration Page 3

4 5.3. Measures Launching measures Configuring the FM modulator Real time measurements Automatic measurements Capturing measurements THE EMBEDDED WEB SITE Product ID Network Unit Download THE REMOTE COMPUTER APPLICATION Launching the Modulation Analyzer s application Prerequisite Connection to the unit System Configuration Product Identifiers Date/Time Status Users Network Support Preferences Report Capture Measurement Configuration Configuration management Analyzer tab Reference tab Generator tab Measurement Mode Overview Analysis tools MPX tab Audio tab Sub-carrier tab Modulation tab Filters tab Spectrum tab Oscilloscope tab Thd tab AM Noise tab RDS tab Automation tab Summary tab Creating Reports Managing captures Download one or more captures Displaying a capture Laboratory version Laboratory version features Upgrading Page 4

5 8. AUTOMATION TOOLS Connection Using the automation tools A final note APPENDIX A: AUTOMATION COMMAND LIST A.1. Global commands A.2. Set RF frequency A.3. Set A.4. Set Input/output matrix A.5. Set AF Generator A.6. Reference levels A.7. Set references deviation for each modulation standard A.8. Get versions A.9. Get Levels A.10. Set the RF generator (option) APPENDIX B: KEYBOARD SHORTCUTS APPENDIX C: GLOSSARY C.1. RDS C.2. Detector filters APPENDIX D: FOR FURTHER INFORMATION Page 5

6 1. INTRODUCTION 1.1. General information About the Audemat Group Audemat provides a suite of professional monitoring and measurement tools for Radio and TV broadcasters, telecommunication operators and regulation authorities worldwide. The Audemat portfolio includes radio frequency (RF) and data monitoring equipment and mobile field strength meters for analog and digital radio and TV, digital test and measurement equipment, audio processors, world-class RDS encoders and an extensive range of facility remote control solutions. To complement Audemat s hardware product line, the company also offers an extensive range of professional software solutions for the management, configuration and monitoring of broadcast networks. Founded in 1980, Audemat is part of the WorldCast Systems group of companies which combines the collective expertise & extensive product portfolio of several major broadcast brands to offer turnkey systems in all major analog and digital technologies. Other brands within the group include: APT Codecs who offer reliable and cost effective broadcast codec platforms delivering high quality content over IP, T1, E1, ISDN & Leased Lines. Ecreso who design a range of highly efficient transmitters for broadcast transmission technologies such as FM, DAB/ DAB+/ T-DMB. Both liquid- and air-cooled options are available. As such, WorldCast Systems can offer complete broadcast solutions for the delivery, transmission and monitoring of broadcast content throughout the broadcast chain. The group is founded on three core values: 1) Product innovation: Audemat places a key emphasis on Research & Development and its innovative approach has been repeatedly recognized by the industry. WorldCast Systems has won awards for innovation at consecutive NAB Shows for over 10 years. 2) Customer satisfaction: Audemat is dedicated to ensuring the best quality, value and service for its customers and has achieved IS certification. 3) Sustainable Development: Audemat is committed to sustainable development and demonstrates this commitment in several ways: it has been ISO certified since 2007, adheres to the UN Global Compact project and all new products are developed in keeping with an eco-design philosophy and built within Audemat s low energy consumption factory. Audemat employs around 80 employees at headquarters in Bordeaux-Merignac, France. Audemat also has a subsidiary in Miami, USA that manages the North & South American markets as well as sales offices in the UK, India and China. An extensive network of international dealers and distributors means that the company is represented in over 45 countries throughout Europe, Middle East, Africa and Asia. Page 6

7 About the Modulation Analyzer The Modulation Analyzer is an entirely digital demodulator. The RF, MPX or audio signal is digitalized as soon as it enters the device, and all processing in the device is then made through calculations. For the RF input, this acquisition is made using an accurate and very quick converter, directly analyzing the entire FM band ( MHz), without mixing. Digitizing in this way, at the input, gives the equipment measurement reproducibility over time, as well as from one device to another: the same signal applied to two devices will give the same result. The accuracy of the digital filters, used in this equipment, enables the FM multiplex signal s components to be accurately and repeatedly reproduced from one device to another, incurring no errors. The processing power in this equipment enables all measurements to be refreshed simultaneously and synchronously, thereby allowing for detailed readings of all the Multiplex FM signal components, while viewing the 4 available spectrums and maintaining a review of the decoded RDS Before beginning This equipment complies with international mechanical and electrical standards. To maintain this compliance, as well as to ensure proper and safe working conditions and avoid electrical shocks and fire hazards, you must comply with the following recommendations: The device should only be utilized in the conditions described in the user manual. The device is designed for industrial usage and must only be operated by qualified personnel. The device may be heavy; it must be lifted and handled with care, specifically during unpacking and set up. Electrical precautions Unplug from mains outlet before any intervention. Any maintenance, adjustment or repair must be carried out by personnel specifically trained by WorldCast Systems. Before switching on the device, make sure the nominal voltage specified on the device matches the mains nominal voltage. The device should only be operated on a stable electrical network. If the electrical network is not stable, a power conditioner, such as a UPS, must be used The device must only be used with a plug that incorporates a protective ground contact. To avoid any risk of electrocution, the protection conductor must not be cut, intentionally or accidentally, either on the device or on the power cord. High quality shielded cables are mandatory. Environmental precautions It is necessary to verify that environmental conditions comply with those recommended in the manual. Nothing must obstruct the ventilation. To avoid any electromagnetic interference, the device must only be used when it is closed, installed in a cabinet and connected to the earth as per the instructions. The device should not be exposed to dripping or splashing and no objects filled with liquids, such as coffee cups, should be placed on the equipment. Precautions regarding the lithium battery This device includes a lithium battery. Page 7

8 If the battery is not correctly replaced, there is a risk of explosion. Only replace it with a battery of the same type. Contact us before attempting to use another type Do not puncture the battery Do not throw the battery in fire Do not immerse the battery in water Do not throw away the used battery, recycle it instead. You may send it back to us if needed. If these precautions are not followed, the guarantee will be void Versions and options Laboratory version The Modulation Analyzer comes in standard or Laboratory version. The Laboratory version includes the following features: RF frequency meter, AF distortion meter, AF frequency meter, Pilot frequency meter, Test signal generator (pure sine wave), RDS frequency meter, Pilot/RDS synchronization/phase difference Oscilloscope (0 200 khz), Automatic frequency sweep to measure crosstalk, bandwidth, SNR and THDN, Automation tools for remote console access. A software upgrade allows turning the standard version of the Modulation Analyzer into the Laboratory version. Please read section 6.7 for more information on getting and installing this option RF Generator option The RF Generator is a hardware option (available only for the Laboratory version). It makes it possible to generate an FM signal with integrated audio and composite generators. This option will be particularly useful to test rebroadcast equipment: inject a known signal from the Modulation Analyzer s RF generator into rebroadcast equipment and test its output by measuring it with the Modulation Analyzer. From the output of rebroadcast equipment to the relevant Modulation Analyzer s input From the Modulation Analyzer s RF generator to the RF input of rebroadcast equipment Page 8

9 2. PRODUCT PRESENTATION 2.1. List of included accessories Check that all accessories are present: 1 external 200 V/12 V power supply 1 crossed network cable (labeled B ) 1 male/male BNC cable ( N ) + 1 N/BNC adapter 1 box including a CD-Rom, a cable connection diagram, quality control document and a quick start notice. 1 binder including the user manual, the technical specifications and a measurement synthesis report for your equipment 2.2. Front panel General view Power supply Optional RF output Power button Touch screen RF input 50Ω ( MHz) Crossover network cable Headphone output Note: Please refer to the technical specifications for nominal levels. Max and min levels: -25 dbm / +5 dbm. Network cable. When connecting to a network (via a router or switch), the cable must be standard (not crossover). If a computer is connected directly, a crossover cable must be used. Headphone output. The output is disabled when the screen is off Reserved for future use Page 9

10 Connections Inputs Outputs MPX input. 10 MHz input to synchronize the internal clock on an external signal. The synchronization is automatic when 10 MHz signal is present, there is no need to set anything with the application software. Analog audio inputs. Audio AES/EBU input (48 khz). MPX output. See for directions on how to assign a signal to this output. Auxiliary output. See for directions on how to assign a signal to this output. Analog outputs. See for directions on how to assign a signal to this output. AES/EBU output (48 khz). See for directions on how to assign a signal to this output. Optional RF output. Input / output pinout: Analog inputs / outputs Signal designation Pin number Analog - 3 Analog + 2 Ground 1 Digital inputs / outputs Signal designation Pin number Digital - 2 Digital + 3 Ground Page 10

11 Screen Power On/Off button. We strongly recommend the use of the screen on the front panel to turn off the equipment. (see 4.1) Screen On/Off button. When the screen is not necessary, we strongly recommend turning it off using this button. This button also controls the headphone output: if the screen is off, the headphone output will be off. Volume control for headphone output and for screen configuration setting. Control for screen configuration setting The screen has a tactile faceplate for which a stylus has been supplied. When starting up the equipment, this touch screen requires calibration, so that the cursor follows the movements of the stylus. This calibration is done by dragging the stylus around the edges of the screen. Repeat this manipulation whenever the cursor does not track properly. Page 11

12 3. TECHNICAL SPECIFICATIONS 3.1. General specifications Characteristics Value Dimension (LxDxH) 48 x 27.5 x 13 cm / 19 x 11 x 5 in Weight 4.45 kg / 9.8 Lb Humidity Operating Storage < 70% < 95% Temperature 0 to 40 C, 32 F to 113 F Power supply V Power consumption 60 W 3.2. Measurement specifications on the RF input Optimal specifications are guaranteed for a ambient temperature range from +20 C to +30 C (68 F to 86 F), with a warm-up time of: 15 minutes RF Min. Typ. Max. Unit Frequency range (Tuning: manual) 87,5 108 MHz Input impedance (BNC connector) 50 Ω Frequency measurement (RF level range: -25 dbm to +10 dbm) On internal input 1 ppm On external input : linked to external precision Frequency resolution 1 Hz Power measurement between -50 dbm to +10 dbm ± 0.5 ± 0.8 db RF level for best precision on demodulated signals dbm Demodulated signals MPX Min. Typ. Max. Unit Frequency range khz Measurable deviation ±150 khz Absolute deviation measurement 1kHz (deviation between 2 khz and 80 khz) ± 0.2 ± 0.5 % Page 12

13 Power measurement for the MPX channel Min. Typ. Max. Unit Frequency range khz Max error: With sine wave 1 khz for -10 dbr < P < 9dB ±0,08 ±0,100 db Multiplex decoder / AF stereo signals specifications Min. Typ. Max. Unit Frequency range khz Stereo separation (Reference ±75 khz of deviation, without filter, without de-emphasis, RMS detection): F mod = 1 khz 20 Hz < F mod < 15 khz Deviation with a mono or stereo L=R or stereo L=-R signal 1 0 dbu 20 Hz 15 0 dbu >67 >52 ±0.05 ±0.1 >65 >50 ± /-0.05 Variation between L and R channels <±0.02 <±0.03 db db db L&R channel noise measurements Min. Typ. Max. Unit Frequency range khz Measurement range dbu Equipment residual noise rate (reference 0 dbfs with F mod = 500 ±75 khz of deviation, de-emphasis = 50 µs / RF level = 0 dbm): Mono signal, RMS, without filter Mono signal, weighted CCIR quasi-peak Stereo signal, RMS, without filter Stereo signal, weighted CCIR quasi-peak > 95 > 88 > 92 > 83 > 93 > 83 > 82 > 71 db De-emphasis filters Type 0 µs, 50 µs, 75 µs Page 13

14 3.3. Specifications on the MPX input MPX Min. Typ. Max. Unit Frequency range khz Input impedance (BNC connector) 10 kω Reference level at the input dbu Measurable deviation ±150 khz Absolute deviation measurement 1kHz (deviation between 2 khz and 80 khz) ± 0.2 ± 0.5 % Power measurement for the MPX channel Min. Typ. Max. Unit Frequency range khz Max error: With sine wave 1 khz for -10 dbr < P < 9dB ±0,08 ±0,10 db Multiplex decoding / AF stereo signals specifications Min. Typ. Max. Unit Frequency range khz Stereo separation (Reference ±75 khz of deviation, without filter, without de-emphasis, RMS detection): F mod = 1 khz 20 Hz < F mod < 15 khz Deviation with a mono or stereo L=R or stereo L=-R signal: 1 0 dbu 20 Hz 15 0 dbu >75 >65 ±0.05 ±0.1 >70 >60 ± /-0.05 Variation between L and R channels <±0.02 <±0.03 db Distortion (THD) ref 1 ±75 khz stereo deviation,, L=R <0.004 <0.01 % db db L&R channel noise measurements Min. Typ. Max. Unit Frequency range khz Measurement range dbu Equipment residual noise rate (reference 0 dbfs with F mod = 1 khz, de-emphasis = 50 µs): Stereo signal, RMS, without filter Stereo signal, weighted CCIR quasi-peak > 92 > 83 > 82 > 72 db Page 14

15 De-emphasis filters Type 0 µs, 50 µs, 75 µs 3.4. Specifications for filters and measurements of non-audio sub-carriers Pilot Min. Typ. Max. Unit Bandpass filter frequency 19 khz Rejection: 15 khz >70 db 23 khz Measurable deviation ± 15.0 khz Absolute pilot deviation measurement precision: Measurement range: 0.1 to ±15 khz ± 0.8 ± 1.0 % Pilot frequency resolution 0.1 Hz Pilot Frequency measurement precision: Measurement range: 1 to ±15 khz ± 0.3 ± 0.5 Hz RDS Min. Typ. Max. Unit Bandpass filter bandwidth (-3 db) khz Rejection (compared to F 0 ): 53 khz >70 db 61 khz Ripple within the band from 55 khz to 59 khz <0,3 db Measurable deviation ± 10.0 khz Absolute RDS deviation measurement precision - Sine wave: Deviation between±1 khz and ±2 khz Deviation between±2 khz and ±10 khz Absolute RDS deviation measurement precision - Data: Deviation between±1 khz and ±2 khz Deviation between±2 khz and ±10 khz ± 1.2 ± 0.5 ± 0.8 ± 0.6 ± 1.5 ± 0.8 ± 1.2 ± 1.0 % % Page 15

16 DARC (76 khz) Min. Typ. Max. Unit Bandpass filter bandwidth (-3dB) 62,4 89,6 khz Rejection (compared to F 0 ): 60 khz >50 db 93 khz Ripple within the band from 64 khz to 88 khz <0,4 db Measurable deviation ± 15.0 KHz Absolute AUX deviation measurement precision Sine wave: Deviation between±1 khz and ±2 khz Deviation between±2 khz and ±15 khz Absolute AUX deviation measurement precision Data: Deviation between±1 khz and ±2 khz Deviation between±2 khz and ±15 khz ± 2.0 ± 1.2 ± 3.0 ± 1.3 ± 3.0 ± 1.5 ± 3.5 ± 1.6 % % 3.5. Outputs Composite MPX /AUX output A B C D E F Possible output signals No signal MPX base band Pilot signal RDS subcarrier signal Sine wave 1 generator signal Sine wave 2 generator signal Connector Type BNC Unbalanced chassis ground Min. Typ. Max. Unit Frequency range khz Max khz ±0,3 ±0,5 db MPX signal response curve (reference 1 ±75 khz deviation): 10 Hz to dbvcc 53 khz to dbvcc ±0,1 +0/-0,2 ±0,15 +0/-0,3 Distortion (THD + N), in the 40 Hz 80 khz 75 khz deviation < 0.5 % db Page 16

17 AES output A B C D E F G H I Signals that can be assigned to channel 1 and 2 No signal L channel signal without de-emphasis R channel signal without de-emphasis M channel signal S channel signal L channel signal with de-emphasis R channel signal with de-emphasis Sine wave 1 generator signal Sine wave 2 generator signal Connector Type XLR 3 male Balanced Min. Typ. Max. Unit Frequency -4 dbfs and 1 khz khz Max error for the output -4 dbfs and 1 khz <±0.01 <±0.015 db Max variation between L and R channels <±0.006 <±0.01 db Response -4 dbfs between 10 Hz and 15 khz ±0.10 ±0.20 db Distortion (THD + N). Reference -4 dbfs, without filter, without de-emphasis between 10 Hz and 15 khz <0.01 <0.05 % Signal/Noise (reference -4 1 khz, stereo L=R: RMS, without filter Weighted CCIR quasi-peak > 130 > 118 >125 > 115 Stereo separation (L/ R & R/L), Reference -4 dbfs, without filter, RMS detection: 20 Hz < F mod < 15 khz >130 >125 db db Page 17

18 L and R analog outputs A B C D E F G H I Signals that can be assigned to channel 1 and 2 No signal L channel signal without de-emphasis R channel signal without de-emphasis M channel signal S channel signal L channel signal with de-emphasis R channel signal with de-emphasis Sine wave 1 generator signal Sine wave 2 generator signal Connector Type XLR 3 male Balanced Min. Typ. Max. Unit Frequency range khz Levels 18 dbu Max error for the output +12 dbu and 1 khz ±0.05 ±0.1 db Max variation between L and R channels <±0.05 <±0.1 db Response +12 dbu between 10 Hz and 15 khz ±0.10 ±0.20 db Distortion (THD + N). Reference ±75 khz deviation, without filter, without de-emphasis between 10 Hz and 15 khz <0.003 <0.005 % Signal/Noise (reference khz, stereo L=R): RMS, without filter Weighted CCIR quasi-peak > 115 > 82 >112 > 80 Stereo separation (L/ R & R/L), Reference +12 dbu, without filter, RMS detection: 20 Hz < F mod < 15 khz >115 >110 db db Page 18

19 Headphone outputs Output signal: dependant on equipment settings: Channel 1 Channel 2 A L channel signal without de-emphasis R channel signal without de-emphasis B M channel signal S channel signal C M channel signal M channel signal D L channel signal with de-emphasis R channel signal with de-emphasis E Sine wave 1 generator signal Sine wave 1 generator signal F Sine wave 2 generator signal Sine wave 2 generator signal Connector Type Output level Jack 6.35mm (1/4 ) female Unbalanced, floating ground Adjustable by the user on the front panel 3.6. Distortion tool Measurement types Harmonics displayed THD, THD+N F2, F3, F4, F5 Min. Typ. Max. Unit Frequency range khz Measurement range 0, % Frequency resolution 0,1 Hz With RF signal Max signal deviation for an internal distortion rate < 0,5 % ±180 khz Residual THD in the equipment from 10 Hz 15 ±75 khz of deviation <0,005 % Frequency resolution 0,1 Hz 3.7. Internal AF generator specifications Frequency range: MPX Composite or Aux outputs Audio outputs Min. Typ. Max. Unit Frequency step 0.1 Hz Distortion (THD): 20 khz / 15 khz < < % khz Page 19

20 3.8. Internal composite MPX generator specifications Min. Typ. Max. Unit Injection level: MPX signal generation Pilot signal generation khz khz L and R channels response curve from 40 Hz to 15 khz ± 0.25 db Distortion (THD+N) on demodulated L and R channels <0.05 % Crosstalk: From 40 Hz to 1 khz From 1 khz to 15 khz Signal/Noise (reference 1 khz AF 75 khz deviation) : De-emph RMS = 0 µs De-emph RMS = 0 µs Weighted CCIR quasi-peak = 0 µs >60 >50 >70 >75 >60 db db 3.9. Internal RF generator specifications Min. Typ. Max. Unit Frequency range 88,00 108,00 MHz Frequency step 1 Hz Output RF level (with a 0.1 db step) dbm L and R channels response curve from 40 Hz to 15 khz ± 0.25 db Distortion (THD+N) on demodulated L and R channels <0.05 % Crosstalk: From 40 Hz to 1 khz From 1 khz to 4 khz From 4 khz to 15 khz Signal/Noise (reference 1 khz AF 75 khz deviation) : De-emph RMS = 0 µs De-emph RMS = 0 µs Weighted CCIR quasi-peak = 0 µs >61 >57 >60 >75 >85 >90 db db External 10 MHz Min. Typ. Max. Unit Power level 0 12 dbm Page 20

21 4. QUICK START 4.1. PC System requirements The minimum configuration required to run the Modulation Analyzer application is: Pentium IV 2 GHz processor Microsoft Windows XP 1 Go of RAM 4.2. Front panel configuration Connect the equipment to the power supply. When first activated, a screen will appear on the front panel that will indicate that initialization is in progress. Please wait for a few seconds. NOTE: If the cursor does not follow the stylus movement, touch the four corners of the screen to recalibrate the cursor. Touch the arrow on the bottom right of your screen to display the menu, and Network to access the IP configuration. Select the settings you wish to modify. The edit screen is displayed (right screen below): change the IP address if necessary ( for instance) by deleting the current value using the Del key and entering the new value using the touch screen. Use OK to validate. Note the IP address, you will need it for remote connection. Default factory settings are already set in the unit. Click Measure from the main screen to access these settings. Click on a setting to access its frequency: To change a frequency, touch the Frequency button and modify the value. To launch measures, touch Start measure and the measurement main screen will be displayed. Page 21

22 4.3. Connecting to the network to access the remote application Connect the network cable between your computer and the Modulation Analyzer (crossover cable B for a direct connection*). *or a straight cable (not included) for a LAN connection through a hub, router or switch. Crossover network cable (B) In case you are using a direct connection, you will need to set an address on the PC in the same range as the IP address you just set using the front panel application, so both are compatible. Example: if the Modulation Analyzer s IP address is , the PC address must be in the xx range. For this, if using Windows 2000 or Windows XP, click the Start button, and: Control panel/network connections/local Area Connection / Properties Click on Internet Protocol (TCP/IP) in the scroll-down menu then on Properties. Add the IP address and the sub-network mask (for example / Netmask ). With Windows Vista or 7, click the Start button, and: Control panel / Network and Internet / Network and Sharing Center. Click on View Status for your local area connection, and on Properties Click on Internet Protocol 4, then on Properties. Add the IP address and the sub-net mask (for example / Netmask ). The application installer can be downloaded on the Modulation Analyzer embedded website. Open your web browser (Internet Explorer, Mozilla ) and enter the IP address you just set via the front panel. The default login and password are: "Admin" / "admin" (case sensitive). Page 22

23 4.4. Installing the Modulation Analyzer application Navigate to the Download page to download the remote application. Click Application installer and follow on-screen instructions to install it. Page 23

24 5. THE FRONT PANEL APPLICATION 5.1. Overview The Modulation Analyzer s front panel application makes it possible to configure the unit but also to launch measures and to view a large number of graphs and data. When first activating the equipment, a screen appears on the front panel; this screen indicates that initialization is happening. Wait a few seconds. The arrow on the lower right of the screen allows access to the menus. Using the stylus, touch it to display menus and touch it again to hide them. A menu entry followed by an arrow pointing to the right indicates there is a sub-menu. The last menu item (preceded by an arrow pointing to the left) will bring you back to the previous screen). If the cursor does not follow the movements of the stylus, touch all 4 corners of the screen in order to recalibrate the cursor. Page 24

25 5.2. Unit configuration Touch the arrow to access the main menu: : Click on Management to display the following screen: You may then: 1. Reboot": restart the unit. 2. Shutdown : this is the recommended method to shut down your Modulation Analyzer. 3. Reset password to factory settings (Admin/admin). Page 25

26 2: Click on Network to display and modify network parameters: IP address, gateway and netmask. Click on the button for the parameter you wish to modify: Use the Del button to erase current value and enter the new value. Once the IP address (or mask or gateway) has been changed, the OK button is activated. Click on it to validate. New values are in effect right away. The IP address set here will be the one used to connect to the equipment with the remote application (see 6.1.2). Page 26

27 5.3. Measures Launching measures Click on Measure from the main screen menu. The list of current configurations is displayed: default configurations and user configurations created from the remote application. The active configuration, if any, has a green background. Once selected, details for this configuration are displayed. The frequency may be modified as is done with the IP address (see section 5.2). To change the source, click on the Change button; then, simply click on the new source to update the configuration. If you need to configure your FM modulator, see section Click Start measure to launch measures. Note: the type of measurements (real time or automatic) will depend on the configuration, which can only be set in the remote application (see section 6.3.1). Page 27

28 The measure main screen displays the following information: Configuration name Activated input De-emphasis Modulation type Output settings Input settings Page 28

29 Configuring the FM modulator The feature is only available with the optional RF Generator. On the main configuration screen, click on the arrow on the bottom left of the screen to display the FM modulation configuration menu. Set the Composite Generator the RF Modulator and the Audio Generator When the FM modulator is set, display the menu and select Input & start to set the input or launch measurements. Page 29

30 Real time measurements When the configuration is set for realtime measurements in the remote application, access the full measure menu and choose the type of measure you wish to perform on the frequency: spectrum analysis, modulation measurement, MPX power All menu items are not directly accessible; click on More to view the last menu items: 1 2 While in measure mode, you may: 1. Reset measurements: the current capture is stopped and a new one starts. 2. Stop Measurements : this command is only available from the main measure screen. 3. Go back to the "Main measurement screen. 3 Page 30

31 Spectrum Click on "Spectrum": you get an RF spectrum on the chosen frequency. Display the left menu to be able to view the MPX spectrum or the L and R audio spectrum MPX Power Select the MPX power menu to obtain a diagram of measured deviation repartition. Display the left menu to be able to view the instantaneous curve or the cumulated curve. Page 31

32 Modulation On this screen, you will see: o The MPX modulation, o M, pilot, S, RDS and SCA paths Audio On this screen, you will see: o The MPX modulation, o L, R, L+R and L-R audio. Page 32

33 RDS The information RDS screen offers a summary of decoded RDS information: o PI o PS o TP o TA o Character table (or code table) o PTY o PTYN o DI o PIN o GRPD Display the left menu to be able to view the groups, instantaneous and global errors and AF Automatic measurements When the configuration is set for automatic measurements in the remote application (only available with the Laboratory version), use the menu on the right to access other types of measurements: bandwidth, signal to noise ration, distortion + noise and crosstalk. The menu on the left allows access to the type of flow, it differs with the selected measurement. Page 33

34 Bandwidth On this screen, you will see the bandwidth level in dbr for each channel. You may select: o Left RMS o Right RMS o Left RMS with de-emphasis o Right RMS with de-emphasis SNR On this screen, you will see the signal to noise ratio in dbr: Total noise Bandwidth. You may select: o Left RMS o Right RMS o Left RMS with de-emphasis o Right RMS with de-emphasis THD+N On this screen, you will see the Total Harmonic Distortion + Noise for each channel in dbr. You may select: o THDN left o THDN right. Page 34

35 Crosstalk On this screen, you will see the levels of one channel in dbr, after a signal injection on the other channel. You may select: o Left/right RMS o Right/left RMS o Left/right RMS with de-emphasis o Right/left RMS with de-emphasis Capturing measurements Automatic measurement reports are only available from the Modulation Analyzer remote application. Capturing measurements from the front panel makes it possible to collect a set of data for a measurement run. You will then be able to download this measurement capture onto your PC from the remote application so as to be able to generate reports. For realtime measurements, simply click the Capture button from any measurement screen. The capture lasts about 3 s. Please read section 7.6 on capture management with the remote application for further details. At the end of automatic measurements, the following message is displayed: Page 35

36 Click OK to capture data. Page 36

37 6. THE EMBEDDED WEB SITE Go to the embedded web site for basic configuration functions and to download the remote application Product ID On this page of the embedded website, the user can: Configure: o Product name: it can be used for connecting to the equipment from the java application. It is therefore recommended to use a unique and easily recognizable name. o Product description (optional) View: o Serial number o Software version o Hardware version Avoid particular characters for the product name; only alphanumerical characters, dashes, underscores and spaces are allowed. When making changes you must click on the Update button before leaving the page to lock in your changes. Page 37

38 6.2. Network Ethernet configuration mode The interface can be configured for dynamic or static IP. Static Ethernet configuration If the IP address is a static address, enter the parameters in this window. DNS Servers: DNS configuration. Current network status: present network table. Page 38

39 6.3. Unit If the unit is on a network, several people may connect to it at once. The first user connecting remotely, or with the front panel, will control the unit; the other users will be authorized to view measurements but will not be able to access configuration pages. The unit may sometimes block full access even when no one is connected, as may be the case following a network or power failure for instance. Click Unlock to restart the embedded application; all user will be logged off thus enabling full connection again. Page 39

40 6.4. Download This page enables you to download the Modulation Analyzer application for the equipment. Click on the first line to, and select Open to install the application, or Save to save the installer for later installation. Page 40

41 7. THE REMOTE COMPUTER APPLICATION 7.1. Launching the Modulation Analyzer s application Prerequisite A remote application, Modulation Analyzer is stored in the unit and is available to be downloaded from the embedded web site in the Download tab. You should also check that the equipment s network parameters are compatible with those of your computer. The equipment does not have a DHCP server. It is therefore mandatory, when using a crossover cable, to configure the computer with a fixed IP address. For a direct connection, configure the computer s IP address in the same range as the Modulation Analyzer s IP address (refer to section 3.3). In case of doubt, and so as to be sure that the equipment can be contacted by the PC, use the ping command via the computer s command prompt, and check that a reply comes back from the Modulation Analyzer. If the unit is on a network, several people may connect to it at once. The first user will control the unit; the other users will be authorized to view measurements but will not be able to access the configuration pages, even if the first user has not started measurements yet. In case of network or power failure or other problem, the unit may completely block access with the application even if no one is connected. Go to the Unit page of the embedded website to unlock the application (see section 5.3). Page 41

42 Connection to the unit Launch the application from the desktop shortcut or go to Programs AUDEMAT ModulationAnalyzer ModulationAnalyzer. The first time the software starts, the following screen is displayed : Reset previously saved data 4 5 Enter the equipment s IP address (2) and the HTTP port (3) (port 80 by default), as well as the login and password (4). The IP address can be set and modified from the front screen (see 4.1) The login and password can be modified from the embedded web site s Users tab (section Web ). Default values are Admin / admin for the administrator and Guest / guest for a basic user. Or: click on the magnifying glass (5) to display a list of equipment connected to the network. All units will be listed. The green indicators show units whose embedded version is compatible with the remote application version; the red indicators show units that are not compatible with the application. Double-click on the line for the chosen equipment: its IP address and port will appear in (2) and (3). Just enter the login and password as described above. Page 42

43 Once the application has been used, a scroll-down menu is available (1) to select the equipment s name from a list of current connections: Enter the login and password if the "Save password" box had not been checked. Click on the "OK" button. The application may take a few seconds to establish the connection. Each time the application is started up, a note about the equipment will appear. You may deactivate this pop-up window by checking the box at the bottom. Once the connection has been established, click on the Configuration tab to begin your equipment s configuration. The File Connect menu makes it possible to connect to different units one after the other without closing the software application. However, we recommend closing and reopening the application, if you need to connect to a different unit. Page 43

44 7.2. System Configuration The first step is to set up the unit and the application. To view the system configuration pages, click the button, or go the View System configuration menu, and use links on the left side of the window to access the different pages Product Identifiers The Product ID page lists the build versions of the various pieces of software and firmware that make the Modulation Analyzer function. It also allows you to give your unit a unique name and description, for your own internal use. Avoid special characters for the product name; only alphanumerical characters, dashes, underscores and spaces are allowed. Click the Update button to lock in your changes (this is true for every page of the system configuration). These settings can also be managed on the Product ID page of the embedded web site. Page 44

45 Date/Time Set system date: The user may update both date (year/month/day) and time (hour/minute/second). Set system time zone: The user selects the geographical zone from the list. Important to have this set correctly when using an NTP server. Network Time Protocol: NTP update The user can enter a time server address to update the equipment s internal clock automatically. Enter either an IP address or a DNS address the unit can reach; make sure to properly set the Gateway and DNS servers on the Network page (see section 6.5). Set the time zone first! Changes in the time zone affect the time that is displayed in the system time window, so setting the zone first will eliminate the need to set the system time twice! Page 45

46 Status The Status page gives a summary of the unit s vital parameters: temperature, available memory, CPU load and available disk space. This information may be requested to establish a diagnosis in case of malfunction. Alarm thresholds make it possible to monitor critical parameters. An Equipment default type SNMT trap is sent in case of overshoot. Page 46

47 Users The Users link opens up a page from which to set user access to the different sections of the Modulation Analyzer. Web & Software accounts: there are 2 user levels to access the website and software application, Administrator and Guest. An Administrator has the rights to change any of the system parameters. A Guest will be able to view measurements and alarms but will not be able to change any configuration or settings or trigger any actions. Several remote users may connect simultaneously. FTP account configuration: Administrator account: access to the entire directory of the equipment. It is used in particular with receiver configuration files (see section 6.16). Update Manager account: used internally to manage updates. You may change login names but make sure each is unique! Only use alphanumerical characters for user names and passwords. Page 47

48 Network IP Configuration: Ethernet configuration mode The interface can be configured with a static or dynamic IP address (DHCP). DHCP mode is only recommended if the IP address given by the server is know (for instance if the server gives an IP address to the MAC address). Static Ethernet configuration If using a static IP address, enter the parameters in this window. DNS Servers: DNS configuration, to be able to use domain names rather than numerical IP addresses. Mandatory if before using DNS addresses on other configuration pages. Current network status: summary of current network parameters. IP configuration is also available on the Network page of the embedded web site. Page 48

49 Support Stop / Restart: Restart enables the user to restart the application to reinitialize the parameters. Reboot equipment : restarts the entire unit. Power off equipment : enables the unit to be switched off remotely. The unit cannot be turned on remotely. Default configuration: This function will allow the user to delete the present configuration and to reset the default configuration. Caution: all parameters including log files will be deleted. Resetting will not erase your current IP address. Page 49

50 Preferences On this page: Enable or disable the startup notice. Set whether the Reset button starts a new capture (if checked) or only resets minima and maxima (see 7.4.1). Set the maximum time for a measurement capture in minutes (0 = no max time). Automatically generate a report at the end of a capture if checked. Choose the language to be used for display: the default language is English unless French is the operating system language. Modulation options Check if damping correction should be applied to bargraphs. Modulation unit: khz or %. Close and reopen the application in order for the language changes to be taken into account. Page 50

51 Report To be able to create reports, set: The text editor used for the creation of reports. Ex: if Microsoft Word is used, select WINWORD.EXE, usually found in the directory: \Program Files\Microsoft Office\Office Version_Number. The directory in which reports and screen captures used for predefined reports are saved. The directory in which report models created by the user are saved. This information is optional, if left blank, Audemat standard report models will be used. You must configure the word processor and the report directory in order to be able to launch measurements Capture When captures are taken using the front panel, they will eventually be downloaded in this directory. Page 51

52 7.3. Measurement Configuration The configuration settings are displayed on startup. Later on, they are only accessible when no measurement is being carried out. It is necessary to stop measurements by clicking the Stop button in order to toggle onto the configuration and modify the parameters. To access the configuration view, click on the button, or go the menu View Configuration. CAUTION: the Modulation Analyzer comes with three default configurations: Factory, Reference and Test. These configurations may be modified, but not deleted. They ensure the unit will work properly Configuration management Use icons on the tool bar: In order to create a new configuration, click the "New conf." button: Enter the name of the new configuration. Click "Create configuration, its name will then appear in the list and you will be able to set its parameters. When a configuration is modified, click Save conf. to lock in the changes. If you exit the Configuration mode without saving, the Modulation Analyzer will offer to do so. To delete a configuration, select it from the list and click the Del. Conf. button. Page 52

53 Analyzer tab List of up to 10 recorded configurations: these configurations are available on the unit s front panel application. They enable configurations specific to a station to be memorized. These configurations are stored in the unit, not locally on the PC. Name of the selected configuration. List of signals which will be routed to the equipment s outputs. Possible choices are summarized below: MPX and/or AUX outputs Audio 1 and/or 2 outputs Head-phone output RF output** MPX Pilot RDS Mono Stereo Left Right Left with de-emphasis Right with de-emphasis Sine wave 1 generator * Sine wave 2 generator * Composite generator ** Signals routed to the AES/EBU and audio Analog outputs are identical For the headphone output the outputs are linked : Mono/Stereo, Left/Right. Page 53

54 * Only available with the Laboratory version. ** Only available with the RF Generator option. Acquiring data and readings: all panels in the application are simultaneously refreshed at a frequency depending on the type of information displayed. The speed will also depend on the power of the computer being used, with a slow computer, it is best not to check all boxes. Warning: Thd and Oscilloscope screens (Laboratory version) are linked to the Analyze FM modulation and Analyze RF spectrum options. Modulation Analyzer input selection. This may be Analog Audio, AES Audio, MPX or RF input. If the RF is chosen, the frequency in MHz should be entered. The RF signal at the input must contain only that frequency to guarantee accuracy of the equipment, and the RF level must be in the -25 dbm/+5 dbm range. If the MPX input is chosen, the signal is a khz signal, whose nominal level is defined in (if the reference level is 0 dbu, the reference deviation is 75 khz and the signal is applied with a level of 6 dbu, the deviation bargraphs will display 150 khz). If the audio inputs (AES or Analog) are chosen, the signal is a 0-16 khz signal, whose nominal level is defined in (if the reference level is 6 dbu, and the signal is applied with a level of 0 dbu the audio bargraphs will display a level of -6 db). Set parameters for automatic measurements of bandwidth, SFN, crosstalk and THD+N. When this mode is selected, clicking the Start button will start these types of measurements instead of standard realtime measurements. Before launching measurement, it is possible to check Left/Right inversion. In Step by step mode, set the 1 st and last frequency and the number of steps. These frequencies must be between 10 Hz and 90 khz. If the logarithmic scale box is checked, the step and the display are logarithmic. In List mode, set the frequencies that need to be scanned. These frequencies must be between 10 Hz and 90 khz. However, make sure you do not assign a sine wave with a frequency greater than 24 khz on audio outputs. If the logarithmic scale box is checked the display is logarithmic. The sine wave level is set in dbr. An immediate conversion gives access to digital (AES/EBU) and analog levels. Select specific measurements to run. Make sure you check the output settings before launching measurements: If the MPX generator is used on the MPX output, set the output as needed. If the RF output is used, set the RF frequency, its level, its pre-emphasis (if needed) and enable the MPX generator. Automatic measurements are only available with the Laboratory version. So as to facilitate the learning curve on the Modulation Analyzer, tool tips containing short explanations are available. Simply hover over the text zone you wish to learn more about and keep the mouse still for one second: Page 54

55 The type of selected measurements (realtime or automatic) appears on a white background; the other type is on a grey background Reference tab List of recorded configurations. Modulation type: reference levels used by the application to calculate audio levels are based upon the selected modulation type. It can be automatic. Definition for de-emphasis. The signals with or without de-emphasis are calculated continuously, which enables output of any audio signal with or without continuous deemphasis. Filter selection. Use the 15 khz filter when measurements are linked to the MPX or RF input. For other inputs, select the filter according to the measurement type: 15 khz filter for an FM signal, 20 khz for other types of signal. If the 20 khz filter is selection on an RF or MPX input, pilot and RDS are not filtered: displayed measurements consequently include those 2 signals. Definition of output levels generated by the reference levels. Definition of possible different configurations and associated levels. These reference levels are used to calculate audio levels (in db). Page 55

56 Process for measurement on RF or MPX input with a 15 khz or 20 khz filter Signal on the RF or MPX input: amplitude MPX pilot carrier L+R L-R RDS 19 khz 38 khz 57 khz frequency Diagram 1 For stereo decoding L and R must be reconstructed; a 38 khz translation makes it possible to retrieve the L-R signal. pilot carrier amplitude MPX L+R L-R RDS -38 khz -19 khz 0 khz 19 khz frequency Diagram 2 To retrieve L+R, let s apply a 15 or 20 khz filter on diagram 1: amplitude MPX pilot carrier 15 khz filter 20 khz filter L+R L-R RDS 19 khz 38 khz 57 khz frequency Diagram 3 Page 56

57 To retrieve L-R, let s apply a 15 or 20 khz filter on diagram 2: pilot carrier amplitude MPX 15 khz filter 20 khz filter L+R L-R RDS -38 khz -19 khz 0 khz 19 khz frequency Diagram 4 L and R can now be deducted from diagrams 3 and 4: LR L R 2 LR L R 2 As shown on diagram 4, the presence of the pilot carrier and parts of the RDS is perfectly normal on the whole signal filtered at 20 khz. Page 57

58 Generator tab This tab is only available with the RF Generator option. List of recorded configurations. RF modulator settings: enable or disable the modulator, set the frequency from to khz, set the level from -70 to 3 dbm Composite generator settings: enable or disable the generator, set the total deviation from 0 to 150 khz, the modulation type (mono or stereo), the pilot level from 0 to 25 khz and the audio type (L, R, L=R, L=-R) Choice of frequency generated by both local generators. These frequencies must be between 10 Hz and 90 khz. However, make sure you do not assign a sine wave with a frequency greater than 24 khz on audio outputs. The sine wave level is set in dbr. An immediate conversion gives access to digital (AES/EBU) and analog levels. Actual levels are equal to: reference level + RMS level (in dbr) (Reference levels are set on the Reference tab). Page 58

59 7.4. Measurement Mode Overview Click the Measures button (or go to the menu View Measures ) to display to all measurement tabs. This does not trigger off value acquisitions; the graphs and their former values are displayed. After having selected a configuration, the recording of measurements is launched by clicking the Start button (or going to the menu Measures Start, or using the shortcut s ). From this moment on, all selected tabs (see 7.3.2) are simultaneously and continuously refreshed; time graphs store the measurements that, are not visible on the graph. Data is viewed by clicking from one tab to another. The process is the same for the RDS views. Depending on whether the measurement type is realtime or automatic for the selected configuration, the measured data and therefore the tabs will be different. With realtime measurements (standard version): With realtime measurements (Laboratory version): With automatic measurements: Tabs composed of several graphs enable related data to be viewed as a group. This view is divided into two parts; the first part has three or four smaller graphs, the second contains the larger working graph. Contents of the large graph are chosen by clicking on one of the small graphs. This working graph can incorporate advanced functions, depending on its type. These functions include zoom, markers and maximum hold capabilities. To view the RDS, press the Stop button (or go to the menu Measures Stop, or using the shortcut h ) This is the only way to see the data (since the first measurement). The Reset button (or the menu Measures Reset, or using the shortcut r ) resets the displayed minima and maxima. If the option The Reset button acts as restart is checked (see 6.4), clicking on the Reset button stops the current capture and starts a new one. Page 59

60 The status bar reminds the user of the input type, as well as the date and time of the beginning of the analysis and the time elapsed since the beginning of the measurements. Equipment s IP address. If the RF input is the active input, RF levels at equipment input are displayed. RF level within the functional range will show a green LED. A red LED indicates the level is too low (< -25 dbm). An orange LED indicates the level is too high (> 11 dbm). Indicates whether the synchronization is based on the internal clock (Quartz) or on an external source (10 MHz, for instance a GPS). Type of input used (RF, MPX, AES or ANA). Date of beginning of the analysis. Time elapsed since the beginning of the analysis. This time is in days:hours:minutes:seconds Analysis tools Zoom and measurement tools are available for spectrum analysis. These tools are only available on the working graph and are dependent on this graph Zoom It is possible to zoom on a specific part of the curve, by clicking the left mouse button and dragging to define the zone to be displayed. Click and drag from upper left towards the bottom right. To go back to the previous zoom, click the left mouse button, drag up to the left and release the button; the graph will then go back to its original scale Markers It is possible to position two markers. To activate the markers: 1. Click the Measurement button. 2. Click on the desired spot on the curve the 1st time to set marker Click a second time on the curve on the desired spot to set marker Click a third time on the graph to delete both markers. These markers can be linked to a curve (main curve, secondary or maximum curve), or be completely floating (not attached to a curve). A Max hold function is also available on the RF graph. It memorizes the maximum RF level measured since the beginning of the application or since the last reset. Page 60

61 MPX tab To access this realtime measurement tab, you may also go the "Measures menu or use the F1 shortcut. Diagram showing distribution of measured deviations. Cumulated MPX. Time representation of minimal and maximal deviation. Time representation of the calculated multiplex power (in db, according to ITU BS412-7 standard). This graph is the zoom of the selected graph: click on the frames or on first line to see the graph displayed bigger, below. Example in this tab with the instantaneous MPX. Note: this window is present in all tabs. Markers and zoom are available to facilitate readings (please refer to section 6.4.2). Display of data in numerical format for a better interpretation. The cumulated MPX (absolute value or in %) indicates the time ratio during which excursion levels are greater than or equal to 70 khz. The Max MPX power value will only appear after one minute of measurements. Page 61

62 Audio tab To access this realtime measurement tab, you may also go the "Measures menu or use the F2 shortcut. Refer to section to learn how to zoom on the graph. Time representation of positive and negative peaks linked to the Mono signal. Time representation of positive and negative peaks linked to the Stereo signal. Time representation of positive and negative peaks linked to Left signal without deemphasis. Time representation of positive and negative peaks linked to the Right signal without de-emphasis. Peak levels of these 4 signals from the beginning of the acquisition or from the last reset. Page 62

63 Sub-carrier tab To access this realtime measurement tab, you may also go the "Measures menu or use the F3 shortcut. Refer to section to learn how to zoom on the graph. Time representation of positive and negative peaks linked to the Pilot signal. Time representation of positive and negative peaks linked to the RDS signal. Time representation of positive and negative peaks linked to the Auxiliary signal (DARC). Peaks of these 3 signals from the beginning of the acquisition or from the last reset. Page 63

64 Modulation tab To access this realtime measurement tab, you may also go the "Measures menu or use the F4 shortcut. Refer to section to learn how to zoom on the graph. Level of Multiplex signal components: Total deviation, Mono component, Pilot, Stereo component (if pilot is detected), RDS, Auxiliary (DARC). Audio level without de-emphasis. Reminder of the current configuration: reference levels. Page 64

65 Filters tab To access this realtime measurement tab, you may also go the "Measures menu or use the F10 shortcut. Refer to section to learn how to zoom on the graph. P-P/2 deviation display. Display of signal levels for filters/detectors as selected in. Laboratory version only. Display of detected RF frequency (around configured frequency ± 100 khz). Display of pilot frequency and RDS when those signals are detected. Indication of synchronization RDS pilot / phase difference between these 2 signals. Display of selected reference and observed signals over time (In this example, L+R in P-P/2 and L+R in P-P/2 with de-emphasis) Choice of filters/detectors used for display. Click on the Relative button to memorize the current value selected as reference (L+R P-P/2 on the picture) and use it as the new reference. Available filters/detectors associations: P-P/2 P-P/2 + with de-emphasis RMS RMS with de-emphasis RMS CCIR unweighted * * This filter is only available with the Laboratory version. Page 65

66 Spectrum tab To access this realtime measurement tab, you may also go the "Measures menu or use the F5 shortcut. This tab displays three spectrums simultaneously. Refer to section to learn how to zoom or position markers on the graph. RF channel spectrum before demodulation, with a pass band of ±155 khz. The spectral resolution is ~390 Hz/pixel. 100 khz MPX signal spectrum. The spectral resolution is 195 Hz/pixel. Demodulated left (red) and right (blue) audio spectrums. The graph has 512 dots for a pass band of 25 khz. Work panel: marker coordinates and delta in frequency and level. With the RF and MPX spectrums, the Max button display the largest curve while PH Auto places a marker at the highest point. With the audio spectrums, a pull-down menu allows the user to select the de-emphasis level. The default spectrum is for the signal without de-emphasis. Page 66

67 Oscilloscope tab This option is only available with the Laboratory version To access this realtime measurement tab, you may also go the "Measures menu or use the F6 shortcut. Refer to section to learn how to zoom on the graph. View of the MPX signal oscilloscope. View of the synchronized left and right signals oscilloscope. View of the vectorscope (x = Left / y = Right) Reminder of levels for the signal displayed. When the MPX oscilloscope is selected, the following information is displayed:. If the Audio oscilloscope or the vectorscope is selected, it displays information about L and R peak, RMS, frequency and period. For the MPX oscilloscope, choice of edge type. thresholds references and horizontal scale. For the Audio oscilloscope, selection of the signal used for synchronization and choice of thresholds and references For the vectorscope, select the horizontal scale. Page 67

68 Thd tab This option is only available with the Laboratory version. To access this realtime measurement tab, you may also go the "Measures menu or use the F7 shortcut. Refer to section to learn how to zoom on the graph. MPX spectrum view Left audio spectrum view (identical to the Spectrum tab). Right audio spectrum view (identical to the Spectrum tab). Level of the first 4 harmonics for each channel. Detected frequency for each channel and THD 1 and THD+N 2 measurements for each channel with double display: % and db. The table summarizes levels for the first 4 harmonics for each channel. 1: Thd = Total Harmonic Distortion. 2: Thd+N = Total Harmonic Distortion + Noise. Page 68

69 AM Noise tab This option is only available with an RF input. To access this realtime measurement tab, you may also go the "Measures menu or use the F8 shortcut. Refer to section to learn how to zoom on the graph. AM noise values with weighted CCIR-468 filter quasi peak or RMS detector. These values are displayed in db and in %. Display the instantaneous power in function of the measured deviation. Page 69

70 RDS tab General points To access this realtime measurement tab, you may also go the "Measures menu or use the F11 shortcut. All RDS tabs are refreshed simultaneously; this enables the user to view one data display then another with no risk of losing information. Some tabs have a history feature, with which the user can display all data received since the application was started or since the last reset. This is the case for the following tabs: o o o o o List of AFs Hexa group ASCII groups Radio paging TMC To prevent computer overloading, this history is not visible in real time; data viewing is only enabled by stopping the analyzer (Stop button) (a scroll bar will then appear). Pressing Stop will stop the whole application and not just the RDS part. If the RDS analysis is enabled after the measure is launched, it will not be taken into account. Reset to view RDS data. See section to enable RDS analysis. Information in sections,, and is available on every tab: Page 70

71 Identifies the station main RDS data: PI, PS codes, Traffic information (TA / TP), Table of characters used, Information on contents: MS, DI, PTY, PIN, GRPD, PTYN. Displays RDS error information. Button for filtering groups and/or blocks: check boxes for groups and blocks to be displayed. By default, every box is checked. Indication of reception of an A type (red) or B type (blue) group. Red and blue dots on left indicate if the group is filtered or not. Page 71

72 General tab Last decoded AF list. This panel contains: The number of AFs contained in the list, The type of method used for sending these frequencies (A or B). RadioText information: A/B flag (indication of new RadioText), Current RadioText, Previous RadioText. Decoded RDS date and time. Slow Labelling Code. Enhanced Other Network: information on the network s other stations. Page 72

73 Lists of AF tab List of AFs (Alternative Frequencies) received by the equipment since the beginning of the measure. These frequencies are sorted chronologically. When printing reports, all AF lists are saved in a text file: af_list.txt, stored in the report directory. Page 73

74 EON AF tab All EON network stations, received by the Modulation Analyzer. List of AFs sorted by Variant. The list displayed is the one associated with the station or program selected in. Page 74

75 Sequence tab Statistics on the received RDS groups: Number of groups received over the last minute (or between two 4A groups if the RDS time and date are being transmitted). Percentage represented by each group (both A and B variants). Running total of group count. RDS groups received, displayed in order of reception: Red background: type A groups, Blue background: type B groups, Grey background: filtered groups. Page 75

76 Percentage tab View of received RDS groups. The red bars on the graph represent the proportion of type A groups. The blue bars on the graph represent the proportion of type B groups. The grey bars on the graph part represent both A&B groups. Putting the cursor over any grey bar will trigger a popup display of the group number and contents. Page 76

77 HEXA group tab RDS data display in Hexadecimal form. This display is dependent on the settings of the group and block filters. Page 77

78 ASCII group tab RDS data display in ASCII form. This display is dependent on the settings of the group and block filters. Page 78

79 Radio paging tab Radio Paging linked data display. Page 79

80 TMC tab Traffic Message Channel (TMC) linked data display. Page 80

81 Automation tab This option is only available with the Laboratory version. If the 20 khz filter is selection on an RF or MPX input, pilot and RDS are not filtered: displayed measurements consequently include those 2 signals. To access this automatic measurement tab, you may also go the "Measures menu or use the F9 shortcut. On start up, an automatic check may detect an inversion of the left and right inputs, a warning message may then pop up. There are three possible scenarios: The left and right cables are switched, One of the cables is not connected, The input selected for the analysis is not connected, The 20 khz filter has been selected for an RF or MPX input. Bandwidth level in dbr for each channel. Signal to noise ratio in dbr: Total noise Bandwidth. Total Harmonic Distortion + Noise for each channel in dbr. Injects a signal on one channel and measures the level on the other in dbr. Select the type of flow. The selection varies depending on the view. Measurement processing progress bar. Page 81

82 The points of the curves can be either red or blue. When blue, the measurement is valid, ie. The transmitted frequency is equal to the measured frequency and with the THD+N, since the calculation takes longer, the value is confirmed Summary tab To access this tab, you may also go the "Measures menu or use the F12 shortcut. When measurements are being carried out, it is not possible to access the equipment s configuration tab; measurements need to be stopped to modify configuration. However, this page is a summary of the equipment s current configuration. It groups all parameters and, therefore, enables input, output and reference level settings to be consulted without modifying them. Page 82

83 7.5. Creating Reports In realtime measurement mode, this button enables measurement reports to be created from: - RDS analysis - Audio analysis - Spectrum analysis - MPX power analysis In automatic measurement mode, the report includes measurements as selected in the configuration: bandwidth, C/N, crosstalk and/or THDN. The button is enabled only if data has been recorded since the beginning of the session. Make sure a word processor software and directory have been selected. Several report models are supplied, automatically integrating values and graphs relative to a specific type of measurement. They have been created to be compatible with Microsoft Word 2003 (or more recent). Report Models can be found in the Modulation Analyzer installation directory. They can be modified to insert a company logo or to be compatible with other word processors. If you wish to modify the existing models, we recommend you copy them into the Models directory as set in the Report configuration page. Information regarding unit, environment, date, configuration, inputs, references and more, printed on pages 2 and 3 of standard reports, is required to guarantee report validity and must be included in all custom reports. To generate a report, click on the Report button, the File Report menu or the shortcut p. Page 83

84 The word-processing software selected will then be launched to automatically merge the collected data with all Modulation Analyzer models. When generating the report, the application will freeze and all the tabs, graphs and minimal / maximal values will be archived in the selected directory. As for graphs with markers, these will also be saved. These values and images will be integrated thanks to the word-processing software mass mailing functions. Click on one of the report button to open it. It may be necessary to modify the word processor security level so as to allow macro activation. In Microsoft Word 2003, go to the menu «Tools» Macros Security Security level tab. In Microsoft Word 2007, click the Options buttons of the safety warning on top of the window, and select Enable this content. An alert message will indicate that an SQL command will be executed upon opening the document. Click OK to continue. For graphics to appear in the report, in Word 2003, go the menu Tools Macros Macro ; in Word 2007, select the Developer tab and click Macro (or Alt + F8). Two macros can be used: refresh to update links between the report file and the images, or incorporate to place the images directly in the report. All reports and associated screen captures are stored in the directory set in the options, in a sub-folder with a unique time stamp name: yyyymmddhhmmss. Page 84

85 7.6. Managing captures Captures can be done from the unit front panel application (see section 5.3.5). These captures can then be downloaded to the PC and viewed via the remote application so as to create automatic reports. The following procedures may only be done if captures have already been taken from the front panel application. Please make sure the capture is completed before downloading or the capture file may get corrupted (wait for the RUN LED to turn off, about 10 s). Captures commands can be found in the File menu Download one or more captures The list of available captures is displayed in a window in tree form. There is one folder per day (yyyymmdd). Display details for a folder to see captures made that day. Names of capture files include date and time and the.mac extension. Check the captures you wish to download. Check the folder if you want all captures for one day. Click the Download button to retrieve the files from the unit to the PC, or the Display button to view the capture right away. Captures are saved in the directory as set in the Capture configuration page (see section 7.2.8) Displaying a capture Once a capture has been downloaded, the application can read it. Simply select the.mac file from the Open window. Capture values are displayed. Proceed as with real time to generate reports. Page 85

86 7.7. Laboratory version Laboratory version features Functionalities that are available only with the Laboratory tools options are: RF frequency meter, AF distortion meter, AF frequency meter, Pilot frequency meter, Test signal generator (pure sine wave), RDS frequency meter, Pilot/RDS synchronization/phase difference, Oscilloscope (0 200 khz), Automatic frequency sweep to measure crosstalk, bandwidth, SNR and THDN, Automation tools for remote console access Upgrading Contact the sales department in order to obtain the software key to activate the option. Copy the product key from the Audemat CD that you receive. Go to the "Help menu of the Modulation Analyzer application and click on About. Display the Licenses tab Paste or copy the product key in the text field. Click the Activate license button. Click on Activate to update the unit with the option. Close and restart the application Once activated, the LaboratoriesTools line will be displayed. Page 86

87 8. AUTOMATION TOOLS Automation tools are only available with the Laboratory version. Automation tools enable a remote access to the Modulation Analyzer via a Telnet connection, without using the java application Connection Open a Telnet application, such as HyperTerminal. Set connection parameters: Unit s IP address Port: 4321 Connection type: TCP/IP Page 87

88 It may be necessary to modify properties: Click on the properties button Then on the ASCII Setup button. Check both boxes for your commands to be readable. Page 88