Diamond Line 3 Single Output Amplifiers

Transcription

1 Diamond Line 3 Single Output Amplifiers About this Section In this section, you will find the following reference information about the Diamond Line 3 single output amplifiers: Item...Page Equipment Description...9 Model Numbers (module only)...10 Configuration Numbers (module + housing)...11 Controls and Connectors...12 Plug-In Circuits...14 Functional Description...16 Specifications...20 DL 3A, 3T, 3M Amps Diamond Line 3A, 3T, 3M Amps 14 April

2 8 14 April 2000 Diamond Line 3A, 3T, 3M Amps

3 Equipment Description DL 3A, 3T, 3M Amps Figure 2. Diamond Line 3 Single Output Amplifier, Front View The Diamond Line 3 single output amplifier is a line extender, similar in function to Philips LE series line extenders. The Diamond Line 3 single output amplifier, a line extender, is available in three basic models: model 3A, with automatic level and slope control (ALSC), model 3T, with thermal level control, and model 3M, with manual level control. Diamond Line 3A, 3T, 3M Amps 14 April

4 Model Numbers (module only) 6 G3A19_ / 42/54 _ _ Power Doubling Technology Diamond Line 3 Amplifiers 1 Output Hybrid (Diamond Line 3 Amplifier) Series 9 (1 GHz platform) Station Gain (db) 30 Model 3A (incl. losses from automatic control/thermal control and 1 db loss from input equalizer) 31 Model 3M (incl. 1 db loss from input equalizer) 33 Model 3T (incl. losses from thermal control and 1 db loss from input equalizer) ALSC Pilot Frequency (if model 3A) For Example: 427 = MHz 433 = MHz 499 = MHz or THR = Thermal (model 3T) or MAN = Manual (model 3M) Station Output Tilt (over forward bandwidth) 125 = 12.5 db Highest Forward Frequency 7 = 750 MHz 8 = 870 MHz 36 Model 3M (incl. 1 db loss from input equalizer) 42/54 Bandsplit (diplex filter) 5 42 MHz, return 54 MHz and up, forward Figure 3. Diamond Line 3 Amplifier, Model Numbers The Diamond Line 3 amplifier modules vary in highest forward frequency, type of level control, and station output tilt. Diamond Line 3 amplifier models vary in two ways: highest forward frequency and type of level control (ALSC, thermal, or manual). For example, model 6-G3A198 /28-42/54/ (variable elements underlined) specifies the following: a highest forward frequency of 870 MHz, ALSC (model 3A) with a MHz pilot frequency and 28 db station gain, and 12.5 db station output tilt over the forward bandwidth April 2000 Diamond Line 3A, 3T, 3M Amps

5 Configuration Numbers (module + housing) G3A61 _ D C _ 9 _C- Same for Diamond Line 2 & 3 Amplifiers Power Doubling Technology 1 Output Hybrid (Diamond Line 3 Amplifier) Highest Forward Frequency 7 = 750 MHz 8 = 870 MHz 42/54 Bandsplit Station Gain (db) 30 Model 3A (incl. losses from automatic control/thermal control and 1 db loss from input equalizer) 31 Model 3M (incl. 1 db loss from input equalizer) 33 Model 3T (incl. losses from thermal control and 1 db loss from input equalizer) 36 Model 3M (incl. 1 db loss from input equalizer) Powering 90 VAC, 3A power supply Housing A = None B = 9-NHD15/1/PED C = 9-NH15/2P K = 9-NH15 L = 9-NH15/CA M = 9-NH15/I N = 9-NH15/I-CA P = 9-NH15/I/PED R = 9-NH15/I/PED/CA T = 9-NH15/PED-CA U = 9-NH15/PED V = 9-NHD-15 (Also compatible with 9-BH series housings) Plug-In Return Amp Hybrid ALSC Pilot Frequency (if model 3A) LD = MHz LE = MHz LF = MHz LG = MHz LJ = MHz or TH = Thermal (model 3T) or MN = Manual (model 3M) Element Management (EMS) Option Surge Protection 90V Crowbar Station Output Tilt (over forward bandwidth) 2 = 12.5 db 3 = 11.0 db 4 = 10.0 db 5 = 14.7 db Split equalization: (interstage eq/output tilt) B = 10/12.5 C = 5.5/10.0 D = 6.5/11.0 E = 8/12.5 F =10.2/14.7 DL 3A, 3T, 3M Amps Figure 4. Diamond Line 3 Amp, Configuration Numbers A Diamond Line 3 amplifier configuration combines a particular amplifier module with a particular housing. Diamond Line 3 amplifier configuration numbers tell which amplifier module is installed in which housing. For example, configuration G3A618D28-CVLJ92C-01 (variable elements underlined) specifies the following: a 3A module like the example given on page 10 (a highest forward frequency of 870 MHz, an ALSC pilot frequency of MHz, and 12.5 db station output tilt at highest frequency) and a 9-NHD-15 housing (9-NH15 series housing with deep lid, as required for element management, ). For more on 9-NH housing model numbers, see page element management option which carries EMS signals on and 6.5 MHz. 1. Diamond Line series amplifiers can also be housed in 9-BH series bypass housings. See the 9-BH15 Bypass Housing Installation Guide, document number Diamond Line 3A, 3T, 3M Amps 14 April

6 Controls and Connectors 9. ALSC On/Off Switch (model 3A only) 12 Location of EMS Current Sensor 11. EMS & Power Connector 13. EMS Module RF Input Connector 10. ALSC Gain Control (model 3A only) 3. Input Test Point, TP1 4. Output Test Point, TP2 8. Fuse, F1 8. Fuse, F2 6. Return Output Test Point VDC Test Point 5. Return Input Test Point 1. Forward Input/ Return Output Jack, J1 2. Forward Output/ Return Input Jack, J2 Figure 5. Diamond Line 3 Amp, Controls & Connectors This illustration shows the Diamond Line 3 amplifier module s controls and points of connection. Callouts are defined in the following table. For locations of plug-in circuits, see page April 2000 Diamond Line 3A, 3T, 3M Amps

7 Designation 1. Forward Input/Return Output Jack, J1 2. Forward Output/ Return Input Jack, J2 Description G-type female connector. Routes forward input to the amplifier. Also routes return output via the cable system back to the previous amplifier. AC can be received through either port (J1 or J2) to a 3-amp power supply. G-type female connector. Routes forward output to the cable. Also routes return input to the amplifier. AC can be received through either port (J1 or J2) to a 3-amp power supply. 3. Input Test Point, TP1-20 db directional coupler test point. Used to measure the forward input signal at J1 without interrupting the amplifier s operation. Return output signal cannot be measured here. 4. Output Test Point, TP2-20 db directional coupler test point. Used to measure the forward output signals at J2 without interrupting the amplifier s operation. Directional coupler test point isolates the measured forward output signal from the effects of reflections in the cable. The output test point allows access to the return band as well. You can t measure return signal here, but you can inject return test signals. 5. Return Input Test Point -20 db directional coupler test point. Used to measure the incoming return signal without interrupting the amplifier s operation. Diamond Line 3 amplifiers use a directional coupler for the return input test point; these amps do not combine return signals, so noise is not an issue. 6. Return Output Test Point -20 db directional coupler test point. Used to measure the return signal as it will be sent to the return output port, J VDC Test Point Used to check the DC voltage. 8. Fuses, F1 & F2 25-amp fuses. Direct AC power to ports J1 and J2, respectively. 9. ALSC On/Off Switch (model 3A only) 10. ALSC Gain Control (model 3A only) Switch located on ALSC circuit board. Turns automatic level and slope control on (automatic mode) or off (manual mode). Potentiometer located on ALSC circuit board. Controls the gain set point in automatic mode (ALSC on). 11. EMS & Power Connector Used to connect amplifier module to element-management equipment in lid of housing (deep-lid model required). 12. Location of EMS Current Sensor 13. EMS Module RF Input Connector Used with element management system to monitor the current draw in the amplifier module. Used to connect amplifier module to element-management equipment in lid of housing (deep-lid model required). DL 3A, 3T, 3M Amps Diamond Line 3A, 3T, 3M Amps 14 April

8 Plug-In Circuits 9-A-WC or 10-A-WC Input Attenuator 7-2E-WC Input Equalizer EDB Response Equalizer (debumper) 7-2E-WC Interstage Slope Equalizer 9-A-WC or 10-A-WC Interstage Attenuator (models 3A & 3M) or 7-CT Thermal Attenuator (model 3T) 9-A-WC or 10-A-WC Return Output Attenuator 7-REF-WC Return Output Equalizer 9-A-WC or 10-A-WC Return Input Attenuator Figure 6. Diamond Line 3 Amp, User-Changeable Plug-Ins These user-changeable plug-in circuits, accessible through cut-outs in the amplifier cover, lets you customize the Diamond Line 3 amplifier. WC series equalizers and attenuators come with guides that simplify their installation and plastic covers that protect their components. (The WC in the part number stands for with cover. ) The illustration above shows what each user-changeable plug-in looks like, and where it goes in a Diamond Line 3 amplifier. For related information elsewhere in this manual, see below: Other information about these plug-ins Page Which plug-ins are factory-installed, which required, which optional 15 How signal flows through the plug-ins & how they act on the signal 12 List of procedures related to each plug-in (in Index) April 2000 Diamond Line 3A, 3T, 3M Amps

9 Plug-ins for a Diamond Line 3 Amplifier Plug-in Series u Factory-Installed Plug-Ins Circuits or jumpers are factory-installed in these positions for optimum performance according to customer or product requirements. (The factory-installed plug-ins are shown in Figure 6 only if they can be changed by the user.) Thermal Attenuator (model 3T only, in interstage attenuator position) 7-CT u Automatic Level and Slope Control, ALSC (model 3A only, under cover, not 6-ALSC u user-changeable) Interstage Slope Equalizer* 7-2E-WC u Output Attenuator (under cover, not user-changeable) 9-A u Required Plug-Ins These positions are shipped empty. For the amplifier to work, you must select and install the appropriate value based on the amplifier s location in your network. (The required plug-ins are all shown in Figure 6.) Input Attenuator 9-A-WC or 10-A-WC Input Equalizer 7-2E-WC Return Output Equalizer 7-REF-WC Optional Plug-Ins Jumpers, or zero value circuits, are shipped in these positions for circuit continuity. You may need to plug in different values based on your system design and performance. (The optional plug-ins are all shown in Figure 6.) Interstage Attenuator (models 3A and 3M only) 9-A-WC or 10-A-WC Response Equalizer (debumper) EDB Return Input Attenuator 9-A-WC or 10-A-WC Return Output Attenuator 9-A-WC or 10-A-WC DL 3A, 3T, 3M Amps * Normally you will not change this equalizer. However, it is accessible through a cut-out in the module cover so that, if necessary, you could change the tilt of the amplifier output from the factory-set value. See Interstage Equalizers on page 129. Diamond Line 3A, 3T, 3M Amps 14 April

10 Functional Description Figure 7. Diamond Line 3 Amp, Functional Block Diagram The Diamond Line 3 amplifier provides one high-level RF output. In summary, forward RF signals enter the Diamond Line 3 amplifier module through the input port, J1, and are amplified once by the pre-amplifier and again by the post-amplifier before exiting through the output port, J2. The return RF signal flows from port J2 to port J1. Forward RF Signal Flow Refer to Figure 7 as you read the descriptions in this section. Input Port (J1). The input port, J1, routes forward incoming signal to the amplifier. (This port also routes outgoing return signal to the main cable.) Input Test Point. The input test point is a -20 db directional coupler. Accessible through a cut-out in the module cover, this test point lets you verify forward signals at the forward input port (J1) without interrupting the amplifier s operation. (Do not use this test point to measure return signal.) Input Diplex Filter. A diplex filter consists of a pair of filters, one high-pass and one low-pass, isolating forward and return bands. The high-pass filter passes forward signals but blocks return signals and AC. The low-pass filter passes return signals but blocks forward signals April 2000 Diamond Line 3A, 3T, 3M Amps

11 Forward RF Signal Flow (Cont.) Input Attenuator. A 9-A-WC or 10-A-WC series plug-in attenuator reduces RF levels at the input to the pre-amplifier to meet design specs. Amplifiers are shipped with the input attenuator position empty. Select and install the appropriate value based on the amplifier s location in your network. Amplifiers are shipped with the input attenuator and input equalizer positions empty; you must plug both circuits in for the amplifier to work. Input Equalizer. The 7-2E-WC series equalizer compensates for the effects of cable preceding the amplifier module. Amplifiers are shipped with the input equalizer position empty. Select and install the appropriate value based on the amplifier s location in your network. Pre-Amplifier. A push-pull input hybrid provides gain. This pre-amplifier sets the amplifier s noise figure. DL 3A, 3T, 3M Amps Interstage Attenuator (models 3A & 3M only). A 9-A-WC or 10-A-WC series interstage attenuator can be used in 3A and 3M models to reduce overall amplifier gain. A zero attenuator is shipped in this slot for circuit continuity. Thermal Attenuator (factory-installed, model 3T only). A 7-CT series thermal attenuator is factory-installed in 3T models to compensate for temperature changes inside the amplifier module. ALSC Bode Equalizer (factory-installed, model 3A only). The automatic level and slope control (ALSC) Bode equalizer works with the ALSC Bode controller to maintain a constant RF output level, compensating for the effects of outside temperature changes on cable. Response Equalizer. An EDB series response equalizer (debumper) flattens the forward response of cascaded amplifiers, compensating for system signature imperfections. A jumper is shipped in this slot for circuit continuity. Interstage Equalizer (factory-installed). The 7-2E-WC series equalizer is factory-installed to optimize the distortion characteristic of the amplifier and provide the desired output slope at the specified bandwidth. Normally you will not change this plug-in. However, if you need to change the tilt of the amplifier output from the factory-set value, see Interstage Equalizers on page 129. Post-Amplifier. The RF from this hybrid, which uses Power Doubling technology, goes to the output port, J2. Diamond Line 3A, 3T, 3M Amps 14 April

12 Forward RF Signal Flow (Cont.) ALSC Bode Controller (factory-installed, model 3A only). The automatic level and slope control (ALSC) Bode controller works with the ALSC Bode equalizer to maintain a constant RF output level, compensating for the effects of outside temperature changes on cable. A directional coupler taps a small portion of the output power and converts it to a DC signal that controls the Bode equalizer. Output Attenuator (factory-installed). An output attenuator fine-tunes the RF level at the output per amplifier specifications. This attenuator, which is not accessible through the amplifier cover, should not be changed by the user. Output Diplex Filter. See Input Diplex Filter on page 16. The output test point allows access to the return band as well. You can t measure return signal here, but you can inject return test signals. Output Test Point. The output test point is a -20 db directional coupler, which isolates the measured forward output signal from the effects of reflections in the cable. Accessible through a cut-out in the module cover, this test point lets you verify forward signals at the output port (J2) without interrupting the amplifier s operation. Output Port (J2). The output port, J2, routes forward outgoing signal to the cable. (This port also routes incoming return signal to the amplifier.) Return RF Signal Flow Refer to Figure 7 as you read the descriptions in this section. Return Input Port (J2). The return input port routes incoming return signal to the amplifier. (This port also routes forward outgoing signal to the cable.) Return Test Signal Injection Point (Output Test Point). Since the forward output test point allows access to the return band, you can inject return test signals here. Do not use this port to measure return signal. Return Input Diplex Filter. See Input Diplex Filter on page 16. Return Input Attenuator. A 9-A-WC or 10-A-WC series plug-in attenuator is used in this position primarily for ingress isolation. (See page 132.) A zero attenuator, is shipped in this slot for circuit continuity. Return Input Test Point. Accessible through a cut-out in the module cover, this -20 db directional coupler test point lets you verify the return signal before it is amplified, without interrupting the amplifier s operation April 2000 Diamond Line 3A, 3T, 3M Amps

13 Return Amplifier. This hybrid, which amplifies the return signal, features an improved compression point and bit error rate (BER) for digital-loaded traffic over a discrete amplifier design. Amplifiers are shipped with the return output equalizer and return output attenuator positions empty; you must plug both circuits in for the amplifier to work. Return Output Equalizer. Accessible through a cut-out in the module cover, this 7-REF-WC series equalizer provides an output tilt at the return amplifier that will provide a flat input at the next return amplifier. Amplifiers are shipped with the return output equalizer position empty. Select and install the appropriate value based on the amplifier s location in your network. Return Output Attenuator. A 9-A-WC or 10-A-WC series attenuator reduces signal levels at the return output port (J1). Amplifiers are shipped with zero return output attenuator. You may need to select and install the appropriate value based on the amplifier s location in your network. DL 3A, 3T, 3M Amps Amplifier Powering Return Output Test Point. This -20 db directional coupler test point is used to measure return signal as it will be sent to the return output port, J1. (Test point at J1 is for forward input only; the return signal cannot be measured at that point.) Return Output Diplex Filter. See Input Diplex Filter, page 16. Return Output Port (J1). The return output port routes outgoing return signal via the cable system back to the previous amplifier. (This port also routes incoming forward signal to the amplifier.) AC power may enter the housing at any of the RF ports. AC and RF separation is fixed. An AC bypass path provides high impedance to RF signals. The amplifier s 3-ampere power supply receives the incoming AC power and converts it into DC power. For details on the power-director fuses, see Figure 26. Diamond Line 3A, 3T, 3M Amps 14 April

14 Specifications Diamond Line 3A Amplifier, 870 MHz, 30dB Gain With 12.5 db Tilt 1 Bandwidth Forward Return Notes 6-G3A198/30-42/54-***-125 Units Forward Minimum Full 870 MHz (incl. losses from ALSC) /-0 db Forward Operating 870 MHz (incl. losses from ALSC and 1 db loss from input EQ) /-0 db Return Operating Gain, 40 MHz (incl. 1 db loss from EQ) 22 db Response Flatness (forward and return) ± 0.5 db Return Loss (75 ohm, both ports, MHz) 16 db Test Points (forward and return) -20 ± 0.5 db Forward Bandwidth Referenced Output Level at 870 / 750 / 650 / 550 / 54 MHz 48 / 46.5 / 45 / 43.5 / 35.5 dbmv Channel Loading (analog, NTSC) a 112 channels 96 channels 79 channels Composite Triple Beat, typical dbc Cross Modulation, typical dbc Composite Second Order, typical Vc & 1.25 MHz only dbc Noise Figure, maximum (includes 1 db for equalizer loss) 11 db Hum Modulation, amps (54-750/ ) a. Distortion specifications are typical for individual module performance /-57 Return Bandwidth Distortions at Referenced +25 C a 6 ch + 39 dbmv flat out Composite Triple Beat, typical -76 dbc Cross Modulation, typical -68 dbc Composite Second Order, typical -79 dbc 1 db Compression Point, typical dbmv Noise Figure (worst case) 8 db Hum Modulation, 12 amps (5 10 MHz / MHz) 65 / amps (5 10 MHz / MHz) -55/-63 dbc AC Bypass Current (continuous) 15 A AC Power Consumption (worst case) 47 W Operating Ambient Temperature -40 to to +60 F C Dimensions (length x width x height) 12.8 x 5.6 x 3.6 in x 14.2 x 9.1 cm Weight 4.55 (2.0) lb (kg) All specifications are subject to change without notice. MHz MHz dbc dbc 1. See the Appendix for the following specifications, which apply to all Diamond Line amplifiers: Power Supply Specifications on page 121, Relative Chroma Delay Specifications (NTSC System M) on page 122, Relative Group Delay Characteristics for Return Signals on page 122, and Automatic Level & Slope Control (ALSC) Specifications on page April 2000 Diamond Line 3A, 3T, 3M Amps

15 Diamond Line 3M Amplifier, 870 MHz, 31 db Gain With 12.5 db Tilt 1 Notes 6-G3A198/31-42/54-MAN-125 Units Bandwidth Forward Return MHz MHz Forward Minimum Full 870 MHz /-0 db Forward Operating 870 MHz (incl. 1 db loss from input equalizer) /-0 db Return Operating Gain, 40 MHz (incl. 1 db loss from EQ) 22 db Response Flatness (forward and return) ± 0.5 db Return Loss (75 ohm, both ports, MHz) 16 db Test Points (forward and return) -20 ± 0.5 db Forward Bandwidth Referenced Output Level at 870 / 750 / 650 / 550 / 54 MHz 48 / 46.5 / 45 / 43.5 / 35.5 dbmv Channel Loading (analog, NTSC) a 112 channels 96 channels 79 channels Composite Triple Beat, typical dbc Cross Modulation, typical dbc Composite Second Order, typical Vc & 1.25 MHz only dbc Noise Figure, maximum (includes 1 db for equalizer loss) 11 db Hum Modulation, amps ( / ) /-57 Return Bandwidth Distortions at Referenced +25 C a 6 ch + 39 dbmv flat out Composite Triple Beat, typical -76 dbc Cross Modulation, typical -68 dbc Composite Second Order, typical -79 dbc 1 db Compression Point, typical dbmv Noise Figure (worst case) 8 db Hum Modulation, 12 amps (5 10 MHz / MHz) -65/ amps (5 10 MHz / MHz) -55/-63 dbc AC Bypass Current (continuous) 15 A AC Power Consumption (worst case) 47 W Operating Ambient Temperature -40 to to +60 F C Dimensions (length x width x height) 12.8 x 5.6 x x 14.2 x 9.1 in. cm Weight 4.55 (2.0) lb (kg) All specifications are subject to change without notice. dbc dbc DL 3A, 3T, 3M Amps a. Distortion specifications are typical for individual module performance. 1. See the Appendix for the following specifications, which apply to all Diamond Line amplifiers: Power Supply Specifications on page 121, Relative Chroma Delay Specifications (NTSC System M) on page 122, Relative Group Delay Characteristics for Return Signals on page 122, and Automatic Level & Slope Control (ALSC) Specifications on page 123. Diamond Line 3A, 3T, 3M Amps 14 April

16 Diamond Line 3T Amplifier, 870 MHz, 33 db Gain With 12.5 db Tilt 1 Notes 6-G3A198/33-42/54-THR-125 Units Bandwidth Forward Return MHz MHz Forward Minimum Full 870 MHz /-0 db Forward Operating 870 MHz (incl. 1 db loss from input equalizer) /-0 db Return Operating Gain, 40 MHz (incl. 1 db loss from EQ) 22 db Response Flatness (forward and return) ± 0.5 db Return Loss (75 ohm, both ports, MHz) 16 db Test Points (forward and return) -20 ± 0.5 db Forward Bandwidth Referenced Output Level at 870 / 750 / 650 / 550 / 54 MHz 48 / 46.5 / 45 / 43.5 / 35.5 dbmv Channel Loading (analog, NTSC) a 112 channels 96 channels 79 channels Composite Triple Beat, typical dbc Cross Modulation, typical dbc Composite Second Order, typical Vc & 1.25 MHz only dbc Noise Figure, maximum (includes 1 db for equalizer loss) 11 db Hum Modulation, amps (54 750/ ) a. Distortion specifications are typical for individual module performance /-57 Return Bandwidth Distortions at Referenced +25 C a 6 ch + 39 dbmv flat out Composite Triple Beat, typical -76 dbc Cross Modulation, typical -68 dbc Composite Second Order, typical -79 dbc 1 db Compression Point, typical dbmv Noise Figure (worst case) 8 db Hum Modulation, 12 amps (5 10 MHz / MHz) -65/70 15 amps (5 10 MHz / MHz) -55/-63 dbc AC Bypass Current (continuous) 15 A AC Power Consumption (worst case) 47 W Operating Ambient Temperature -40 to to +60 F C Dimensions (length x width x height) 12.8 x 5.6 x x 14.2 x 9.1 in. cm Weight 4.55 (2.0) lb (kg) All specifications are subject to change without notice. dbc dbc 1. See the Appendix for the following specifications, which apply to all Diamond Line amplifiers: Power Supply Specifications on page 121, Relative Chroma Delay Specifications (NTSC System M) on page 122, Relative Group Delay Characteristics for Return Signals on page 122, and Automatic Level & Slope Control (ALSC) Specifications on page April 2000 Diamond Line 3A, 3T, 3M Amps

17 Diamond Line 3M Amplifier, 870 MHz, 36 db Gain With 12.5 db Tilt 1 Notes 6-G3A198/36-42/54-MAN-125 Units Bandwidth Forward Return MHz MHz Forward Minimum Full 870 MHz /-0 db Forward Operating 870 MHz (incl. 1 db loss from input equalizer) /-0 db Return Operating Gain, 40 MHz (incl. 1 db loss from EQ) 22 db Response Flatness (forward and return) ± 0.5 db Return Loss (75 ohm, both ports, MHz) 16 db Test Points (forward and return) -20 ± 0.5 db Forward Bandwidth Referenced Output Level at 870 / 750 / 650 / 550 / 54 MHz 48 / 46.5 / 45 / 43.5 / 35.5 dbmv Channel Loading (analog, NTSC) a 112 channels 96 channels 79 channels Composite Triple Beat, typical dbc Cross Modulation, typical dbc Composite Second Order, typical Vc & 1.25 MHz only dbc Noise Figure, maximum (includes 1 db for equalizer loss) 11 db Hum Modulation, amps (54 750/ ) /-57 Return Bandwidth Distortions at Referenced +25 C a 6 ch + 39 dbmv flat out Composite Triple Beat, typical -76 dbc Cross Modulation, typical -68 dbc Composite Second Order, typical -79 dbc 1 db Compression Point, typical dbmv Noise Figure (worst case) 8 db Hum Modulation, 12 amps (5 10 MHz / MHz) -65/ amps (5 10 MHz / MHz) -55/-63 dbc AC Bypass Current (continuous) 15 A AC Power Consumption (worst case) 47 W Operating Ambient Temperature -40 to to +60 F C Dimensions (length x width x height) 12.8 x 5.6 x x 14.2 x 9.1 in. cm Weight 4.55 (2.0) lb (kg) All specifications are subject to change without notice. dbc dbc DL 3A, 3T, 3M Amps a. Distortion specifications are typical for individual module performance. 1. See the Appendix for the following specifications, which apply to all Diamond Line amplifiers: Power Supply Specifications on page 121, Relative Chroma Delay Specifications (NTSC System M) on page 122, Relative Group Delay Characteristics for Return Signals on page 122, and Automatic Level & Slope Control (ALSC) Specifications on page 123. Diamond Line 3A, 3T, 3M Amps 14 April

18 24 14 April 2000 Diamond Line 3A, 3T, 3M Amps