Demux menu
This is the menu to go for when you would like to watch i.e. SCPC signals or encounter channels that appear to be scrambled but are not according to various frequency lists. In order to reconstruct the video- and audio signals, the receiver needs something called PID codes (Package Identification Data). Normally, those codes will be automatically recognised so you don't have to worry about them, but in some cases it might be required to enter them manually. Both video and audio require their own PID code.

To enter the video PID, press '2' on the remote. Now enter the 4-character code and confirm by pressing OK. Press LEFT arrow to get back to the DEMUX menu and press 3 to enter the audio code. As with the video PID, enter the 4 characters by using the remote and confirm with OK.

You might have notticed by looking at frequency lists that show PID codes that the actual 4-character code you need to enter not just contains numbers, but also characters. The receiver expects the entered code to be in hexadecimal format which means 0-9 and A-F are allowed. Some buttons on the remote have double functions to allow you to also enter the characters A-F.

Here's how they are arranged :

  • A = Page Up
  • B = Radio
  • C = Hilfe
  • D = Mark
  • E = - (Minus)
  • F = + (Plus

 Now let's finish this off with an example.

The following is a step to step procedure to enable the reception of 'TV VANDAAG' as can be found on Astra at 12.441V.

  1. Bring up the internal menu by pressing RADIO-99-RADIO-MARK
  2. Press TV followed by 3. The display will now show M-C 77. You could have entered another number then 3, this just selects one of the factory memory locations.
  3. Press MARK again to bring back the menu.
  4. Press 8 and enter the frequency, in this case 1841 OK (12441-10600=1841).
  5. Press UP. The screen will now ask for the symbol rate integer. 'TV Vandaag' transmits using a symbol rate of 27.500. Most likely, the proper fugure is allready displayed, but let's enter it anyway. Enter 27-OK. Now you are asked to enter the fraction. Enter 500 OK
  6. Press UP. You are now asked to enter theViterby code rate (FEC). Press 4 to select 3/4 and press OK.
  7. Press LEFT to get back to the main menu.
  8. Press 6 to enter the installation menu. Now press UP 7 times until the screen shows 'Select 22KHz on/off'. Since the station we are looking for transmits in the high band, press 1 OK to enable the 22KHz tone which will switch your (universal) LNB to the high band.
  9. Press UP. Screen now shows 'Select LNB power'. Press 1 OK for vertical.
  10. Press LEFT to get back to the main menu.
  11. Select 1 - DEMUX menu. The screen now shows 'Select PID reg. number ?'. Both video and audio PID codes both have their own register number. For video this is register 2, for audio this is register 3. So press 2 to enter the video PID code. Enter the appropriate video PID for 'TV Vandaag' which is 4211 and confirm with OK. By now you should be looking at the station allready.
  12. Press LEFT and enter 3 for audio. Now key in 4291 and confirm with OK.
  13. Press LEFT 2 times to get back to the main menu.
  14. Press 8 followed by DOWN. The screen now shows 'Select to save parameters'. Press OK to confirm.
  15. Press LEFT followed by TV and you can watch the picture.

You have saved the entered parameters at factory location number 3. If at any time during normal mode you wish to recall the channel, bring back the internal menu, press TV followed by 3.

Users of software version 5.0 or above, please click here for an alternative method of storing TV Vandaag.

There is also a 4th PID code. This PID is used to synchronize the encoder (uplink) and decoder (downlink) and is called PCR which stands for Program Clock Reference. Many SCPC signals eg. use an extra PID (=PID4) to synchronize the multiplex. For SCPC the usual value for PID 4 is 1FFE which is equal to 8190 (decimal).

Most channels transmitted in packages set the sync to the video or audio (then PID 4 is 1FFF = not used). You can read the PCR-PID by selecting PCR control in the miscell. submenu (demux menu). The front display shows the PCR-PID (eg 2 for sync set to video / 3 for audio / 4 = seperate PCR PID). The last phrase () means that if you have used a factory preset once then the PID info from the once received signal is loaded into the demux registers. If you use this preset again for another signal then the new PID info cannot be downloaded into the demux registers. To avoid this simply switch presets before receiving another signal.

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©Александр Борзов

СПб-Washington D.C..
SAT XPRESS
e-mail: aborzov@hotmail.com
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