Building your own channels.conf.

A channels.conf file is built from an initial tuning data file by running scan "initial tuning data file name" > channels.conf

# DVB-T Koeln
# T freq bw fec_hi fec_lo mod transmission-mode guard-interval hierarchy
# This is not a channels.conf file
T 514000000 7MHz 2/3 NONE QAM16 8k 1/4 NONE
T 538000000 7MHz 2/3 NONE QAM16 8k 1/4 NONE
T 594000000 7MHz 2/3 NONE QAM16 8k 1/4 NONE
T 690000000 7MHz 2/3 NONE QAM16 8k 1/4 NONE
T 698000000 7MHz 2/3 NONE QAM16 8k 1/4 NONE

Should the frequencies change, hope says it will only be necessary to replace the above freq column with the new frequencies which can be learned through the DEC's menu system (see below).

The following method is fairly simple and always works. You should never have to go through this with current versions of the drivers and utilities.

• While watching the TV programme output by your beautiful new DEC2000 (or better yet, while somebody else is watching the TV programme output by your beautiful new DEC2000), hit the ``SETUP'' key on the DEC2000 remote.
• Ignoring their screams of horror, proceed to the menu item with the large ``i'' and hit ``OK''.
• For each channel the DEC2000 detected in chapter 2, carefully note down the information on display. You can switch channels with the $\uparrow$ and $\downarrow$-buttons while displaying the information screen.
• For each channel,
  • Take one line from the above channels.conf, and replace the long number after the first colon with the ``Mhz-number'' gleaned from the information menu multiplied by a million.
  • Replace everything before the first colon with the name of the channel you are working on.
  • The CR-number from the mode line in the information screen becomes the number after FEC_, so $\frac{3}{4}$ becomes 3_4; if it doesn't, it didn't hurt my reception.
  • The number before QAM becomes the number after QAM_ in channels.conf.
  • The first entry from the information menu's ``mode'' line is copied verbatim into the space between TRANSMISSION_MODE_ and the following colon.
  • The second entry from the ``mode'' line becomes the GUARD_INTERVAL, translated like CR.
  • Now, the last two numbers are the most important: the second one must be set to ``Audio-PID'' from the info menu, the first one to ``Video-PID''.