The TDX software ( and following versions ) support the Bisskey de-scrambling.

The TDX feature is only tested using the Quattro CAM and the Smit CAM - other Bisskey CAM's might not be supported.

This article describes, how to setup Bisskey on the TDX using the Quattro 4x4 CAM.

If you need a guide fot the Smit Biss CAM : Bisskey using the Smit Biss CAM


1. Check the web for new Biss keys

 ( ex. 

In this example, I want to watch “1 + 1 International” from Astra 4A:

Bisskey:  1a 2b 3c 81 4d 5e 6f 1a    (Hex values)

Note: there are 8 segments and this CA module requires 8 segments. Segment 4 and 8 are control numbers. (1a + 2b + 3c = 81 and 4d + 5e + 6f = 11a which is 1a when using 2 char.)

If the Bisskey only have 6 segments, you must calculate the 4th and 8th segment.

SID (svcid): 17ed   (Hex value)

HowTo convert hex to decimal value:

I’m using the calculator that comes with Microsoft Windows 10  (Linux distros and Apple macOS have a similar calculator).

  • Select the “Programmer” mode
  • Select whether the number to be entered is Hex, Dec, Oct or Bin.
  • Enter the value ( ie. Hex “17ed” )
  • Read the converted value ( Dec “6125” )

Microsoft have made a small conversion software :

2. The configuration of the TDX and the CAM requires some investigation and convertion.

  • The CAM requires “Transparrent mode” (route entire frontend to CAM)
  • The CAM requires the Bisskey to be entered in decimal with 3 numbers
  • The CAM requires the ServiceID (SID/svcid) to be entered in decimal with 5 numbers
  • The CAM requires the Video PID (v-pid) to be entered in decimal with 4 numbers (this video PID can be found by adding the scrambled service to an output.. remember to delete)

3. The Bisskey and the convertion:

  • 1a 2b 3c 81 4d 5e 6f 1a  =  26  43  60  129  77  94  111  26  .  The first part of the key to be entered will be : 026    … the second part: 043   … the third: 060  …. The fourth: 129  … and so on.
  • Note to the Bisskey: This cam requires 8 blocks. The 4th and 8th are checksums.

4. The SID (service ID) and convertion:

  • 17ed = 6125 . The SID will be entered as: 06125

5. The Video PID

  • The video PID can be found by selecting the service on any output module. This will enable you to identify the original video PID.
  • In my case, the video PID is 6126. This will be entered as: 6126

6. The TDX GUI:

  1. Set source as “Transparent” (select the correct input module to route complete transponder to the CAM)
  2. Select “common interface” and follow this guide

Return ...

Done :-) 

Attached you will find a .pdf version of this article for download / print out.

Also you will find the Bisskey calculator.

This calculator will calculate the checknumbers and do the conversion from Hex to Decimal numbers.