Headends. Description. General Data

Transcription

1 Description The satellite receiver SE 56. is used for spare systems of the KARIN headend.it also can be used as an standard satelite receiver in the KARIN headend. There are two types of satellite receiver: - SAT receiver SE SAT receiver SE 562 (with sound processor) - SAT-receiver SE 563 (with stereo-sound processor) It selects and demodulates an FM modulated carrier frequency (PAL) in the first SAT IF range from 920 to 2050 MHz. All settings (Input frequency, polarity-switching, etc) can be made via the control software or by hardware-switches on the assembly. The satellite receiver SE 56. contains a tracking input bandpass for the suppression of the image frequency, a electronically switchable bandpass filter (27/32 MHz) in the 2nd SAT IF (479.5 MHz) and a PLL demodulator. The input frequency is selected internally by a PLL tuning system. The baseband processing includes the switchable de-emphasis network (PAL, LINEAR), a baseband attenuator with polarity-switching and the video low pass for the suppression of the sound carrier frequencies. In the sound processor (only in SE 562) a switchable non compressed sound carrier is demodulated and is fededin a deemphasis network. The oscillator frequency for the up-mixing to the standard IF of 10.7 MHz is processed in a synthesizer which is controlled by a crystal. The demodulation of the stereo-sound carrier takes place at 7.02 MHz for the left channel and 7.20 MHz for the right channel (SE 563). The stereo-sound processor is compartible to Wegener Panda Systems 1. For processing of other compressed sound signals the SAT receiver generates the baseband signal for the module subcarrier demodulator. At the front side there are the monitoring outputs for the 2nd SAT IF, the video/baseband signal (switchable) and the audio signal (at SE 562 and SE 563). General Data Dimensions L x W x H Weight : 406 x 70 x 177 mm : 1.4 kg Connections: Rear side: - 1st SAT IF input : RF socket, 50 ohm; type 1.0/2.3 on DIN Video/BB output : RF socket, 75 ohm; type 1.0/2.3 on DIN DC connection, signalling switch inputs, control lines : DIN connector 41612, assignment see "Pin assignment terminal ST1 Front panel: - Video/BB monitoring output : BNC socket, 75 ohm - 2nd SAT IF monitoring output : RF socket, 50 ohm; type 1.0/2.3 on DIN Audio monitoring : 6.3 mm jack socket Nominal temperature range Operating temperature range Storage temperature range : o C : o C : o C EEK SAT receiver SE /9

2 Ordering type Ordering number SAT receiver SE SAT receiver SE (with sound processor) SAT-receifer SE (with stereo-sound processor) Technical Data Operating voltage : +12 V ± 0.8 V -12 V ± 0.8 V Operating current : max. 500 ma max. 100 ma 1st SAT IF range: 1st SAT IF input "1. IF": Impedance Frequency range Level (guaranteed technical data) Level (guaranteed operation) Return loss Oscillator interference level Image frequency attenuation Oscillator processing: Frequency range Smallest tuning increment Increment width of the AFC AFC lock-in range 2nd SAT IF range: Frequency IF bandwidth (B IF ) : 50 ohm : MHz : dbm : dbm : ³ 14 db : - 60 dbm (range of MHz) : > 35 db : MHz : 1 MHz : 125 khz : ³ 5 MHz and 12 MHz (internal switch-off) : MHz : 27 / 32 MHz (switchable) Selection of the IF filter in hold-in range : Siemens B 615 Amplitude control range : > 30 db IM in the 2nd IF with 4 carriers (-17 dbm) Demodulation Monitoring output "2. SAT-IF": Level Impedance : ³ 30 db : PLL demodulator : - 30 dbm +/- 3 db : 50 ohm EEK SAT receiver SE /9

3 Video/baseband output: Baseband output,,vibb : Video low pass (internal bridgeable) Impedance : 75 ohm Level : 1 Vpp with front panel potentiometer adjustable Adjusting range - potentiometer (front panel) : 12 db - Internal switch or via software : 0 / 3 / 6 / 9 db Polarity : positiv / negativ (internal switch-off or via software) Return loss: - up to 5 MHz : > 34 db - up to 10 MHz : > 26 db Baseband bandwidth Frequency response Group delay response MHz : < ± 30 ns Measured with emphasis: - differential gain : 6% - differential phase : 6 o : MHz : ± 0.5 db (25 Hz... 5 MHz) : ± 0.6 db ( MHz with 32 MHz filter in the 2nd IF) De-emphasis (switchable) : PAL, linear S/N weighted according CCIR-567 Deviation: 25 MHz, C/N ³ 30 db : ³ 58 db (typ. 61 db) Parameter for activating muting : - 1st SAT IF input level is lower than the defined nominal level (front panel potentiometer) - AFC; input frequency out of the lock-in range - no video signal (only at PAL, for further standards internal switched-off) Video low pass: Video bandwidth Frequency response Selection in the stopband at 6 MHz at 6.65 MHz at 7 MHz at MHz Group delay response : MHz : ± 0.2 db : > 12 db : > 30 db : > 40 db : > 30 db : < ± 20 ns EEK SAT receiver SE /9

4 Monitoring outputs "VIDEO/BB" Level Impedance : on the front panel switchable : see baseband output "VIBB : 75 ohm Audio ouput (only SE 562) Audio output: Mono (AUDIO1) Stereo (AUDIO1,2) Level (PMS... permitted maximum signal) at f NF = 400 Hz; : + 9 dbm (2.18 V e.m.f.) + 9 dbm (2.18 V e.m.f.) (dev. = 100 khz zero-peak) (dev. = 50 khz zero-peak) (± 6 db switchable) Impedance : < 30 Ohm < 30 Ohm Nominal transmission range : 40 Hz...15 khz 40 Hz...15 khz IF bandwidth : 330 khz 110 khz Tuning range of the synthesizer Smallest tuning increment : MHz : 10 khz De-emphasis : 50 ms, 75 ms, 75 ms J17 (switchable) Linearity dbm at 600 ohm (1 khz) : ± 0.5 db (typ. ± 0.1 db) ± 1 db (typ. ± 0.2 db) Frequency related distortions 40 Hz khz : db (typ. ±0.2 db) 100 Hz...14 khz : db (typ. ±0.1 db) khz : db (typ. ±0.25 db) : ± 1 db (typ. ± 0.2 db) Total harmonic distortion ( khz) : ³ 40 db (typ. ³ 46 db) ³ 43 db (typ. ³ 46 db) Phosphometric voltage ratio acc. to CCIR Rec:468-1 (PMS/N) : ³ 60 db (typ. ³ 68 db) ³ 81 db (typ. ³ 84 db) Monitoring output "AF" Level : 2.18 V e.m.f V e.m.f. (dev. = 100 khz zero-peak) (dev. = 50 khz zero-peak) Impedance : 600 ohm 600 ohm Signalling: Video signal present Module fault Module monitoring Module control : LED green : LED red : PC, Remote control (see "PC monitoring / control") : PC, Remote control (see "PC monitoring / control") EEK SAT receiver SE /9

5 Block diagram EEK SAT receiver SE /9

6 Interfaces and operating elements Module front side Lights up in the event of a module fault (red) see PC monitoring/control (LED "FAULT") see PC monitoring/control (LED "VIDEO") Potentiometer for the setting of the video/baseband output level Potentiometer for the setting of the input threshold 2nd SAT IF monitoring output Selector switch for video/baseband signal Video/baseband monitoring output Audio monitoring output Module rear side Terminal ST1 1st SAT IF input (1st IF) Video/baseband output (VIBB) EEK SAT receiver SE /9

7 Pin assignment Terminal ST1 Designation Remark PIN + 12 V Operating voltage ABC11-12 V Operating voltage ABC14 0V Ground ABC10 0V Ground (Audio) A12 AUDIO1 Audio output 1 (optional) B12 AUDIO2 Audio output 2 (optional) B13 FAULT 1 Module error (s. Monitoring / Control) A20 +Um Positive measuring voltage A19 -Um Negative measuring voltage B19 Ex Enable signal for multiplexer B20 SDA I 2 C bus (data) B21 SCL I 2 C bus (clock) C21 A0 Address line 0 for I/O expander A22 A1 Address line 1 for I/O expander B22 A2 Address line 2 for I/O expander C22 Assy assy view index -002 assy view index -003 EEK SAT receiver SE /9

8 Position of the switches Switch Remark closed / position 1 open / position 2 S001 Signal at the monitoring output Video Baseband (BB) S002/S003 Video lowpass on* bridged S039 Polarity of the video signal inverted* not inverted S004/005 De-emphasis (linear / PAL) LIN PAL S036 Video identification (SYNC) on* off S021 AFC off on* S022 Bandwidth 2nd IF 32 MHz 27 MHz* S031 Settings with hardware or software (HW / SW) Hardware*** Software* S007/S008 Frequency setting vision carrier (1 GHz / 2 GHz) on off S Frequency setting vision carrier (100 MHz) on off S Frequency setting vision carrier (10 MHz) on off S Frequency setting vision carrier (1 MHz) on off S Frequency setting sound carrier (1 MHz)** on off S Frequency setting sound carrier (100 khz)** on off S Frequency setting sound carrier (10 khz)** on off Level adjustment video signal Switch 0 db 3 db 6 db 9 db S037 open closed open closed S038 open open closed closed De-emphasis adjustment ( mono sound assy / index -002) ** Switch Remark position 1 position 2 S401/1 De-emphasis J17 on off* S401/2 De-emphasis 75 ms on off* S401/3 De-emphasis 50 ms on* off Level adjustment audio signal ( stereo sound assy / index -003) **** Switch AF 1 (dbm bei 50 khz deviation fnf 400 Hz) Switch AF 2 (dbm for 50 khz deviation fnf 400 Hz) * * S1 open open closed closed S3 open closed open closed S2 open closed offen closed S4 open open closed closed * Delivery settings ** only SE 562 *** when the module is used as a standard SAT-receiver in the KARIN headend **** only SE 563 EEK SAT receiver SE /9

9 PC monitoring / control Parameter Remark ( ) Designation in block diagram Display at PC monitor PC monitoring: LED "FAULT" Module error: LED lights up red (FAULT2) - fused-protected operating voltage -12 V not present LED "VIDEO" Lights up if: LED lights up green - 1st SAT IF input signal up the rated level - Input frequency is in the lock-in range of the AFC - Videosignal (PAL) is present - standard synchronous impulse is present LED "SYNC." standard synchronous impulse is present LED lights up green LED "AFC ON" AFC is swiched on LED lights up green LED "POLARITY INV." Videosignal is invers LED lights up yellow LED "SYNC. DET. OFF" SYNC detector is switched off LED lights up yellow IF IN. LEV. 1st SAT IF input level dbm INPUT SENS. Input sensitivity dbm LED "SND CAR.1" **/*** Sound carrier 1 is present LED lights up green LED "SND CAR.2" *** Sound carrier 2 is present LED lights up green TUN. VOLT. ** (U TUNE ) Tuning voltage of the PLL on the assy sound processor V PC control: Switch "MUTE" (Muting OFF) Switch "POLARITY" (Polarity) Switch "SYNC" Position "ON": Autom. MUTE functions are switched on (see "Technical data) Position "OFF": Autom. MUTE functions are switched off Position "INV": Video signal isn t invers Position "INV": Video signal is invers Position "ON": SYNC detector is switched on Position "OFF": SYNC detector is switched off INPUT FREQ. Input frequency MHz GAIN Gain of the baseband signal 0 / 3 / 6 / 9 db BAND WIDTH Filter bandwidth in the SAT tuner 27 / 32 MHz SOUND CAR. ** Sound carrier frequency in MHz * "FAULT1" (Terminal "ST1" and LED an der front panel): - fuse-protected operating voltage + 12 V or -12 V not present ** only SE 562 *** only SE 563 EEK SAT receiver SE /9