Learn what you need to know before, during and after your transmission.
*This information is provided to SNG operators as a reminder. It is highly recommended the official ITU-R.SNG-1710 is studied in detail in order to understand the line-up process and avoid any unintentional access and possible interference caused by incorrect access.
Before your transmission - what do you need to know?
- Your transmission reference (also called "synopsis number", e.g. 19-123456)
- Your transmission timings (in UTC) and the transmission parameters confirmed for your booking:
- Satellite and transponder
- Channel name
- Uplink and downlink frequency
- Symbol rate, pilot insertion
- TS value
- Encoding standard, aspect ration
- Encryption key
EVC Geneva: +41 22 717 27 90
Eutelsat: +33 45 57 06 66
Asiasat: +852 2600 9294 / 9295
SES: +31 70 306 41 42
Intelsat: +1 404 381 2600
ABS: +63 47 252 9012
APSTAR: +852 2600 2224
Step-by-step line-up procedure
- Using satellite beacon frequency, point your antenna to the satellite.
- Set your spectrum analyzer to the downlink frequency in order to monitor the carrier.
- Set the transmitter to standby mode at maximum attenuation.
- Set your equipment (main and backup transmission chains):
- enter parameters into the encoder and connect source of the signal to its input,
- clearly identify your main and backup uplink chains by service name (eg. SNG CODE_1 & SNG CODE_2),
- connect the encoder TS output to the modulator,
- prepare your modulator for given TS and symbol rate/FEC.
- 20 minutes before the transmission call EVC Geneva (please have your transmission reference ready) to verify the transmission parameters.
- The EVC Geneva will confirm whether you can access the satellite channel.
- 15 minutes before the transmission call the satellite provider (see contact phone numbers above) and follow the line-up procedure.
- You will be asked to provide:
- earth station registration code,
- satellite, transponder, frequency slot allocation, and uplink polarization.
- Be ready to follow satellite operator's instructions:
- transmit signals at different power levels (both unmodulated and modulated),
- peak the transmit antenna, and rotate/adjust the transmission antenna polarizer.
- When the line-up is completed call back EVC Geneva and test your transmission settings including encryption of both main and backup chains and do your transmission.
- Make sure that the EVC Operator has your phone number for further use.
During the transmission
- Never leave your station. Make sure that you are always reachable by phone.
- Permanently monitor your downlink (audio/video) and spectrum analyzer.
- Do not forget to inform EVC about any changes of schedule, extension etc.
- SNG must respect the power levels given during the line-up procedure.
After the transmission
- Check with the production on site and make sure that program is finished.
- Call EVC to “goodnight” your transmission and reconfirm the end timing (in UTC).
- Make sure that your carrier is de-activated and the transmit chain is switched off.