Digital cable tv frequencies

A

and_woox

Enthusiast
I was researching about digital cable tv frequencies and found a lot of info, but coundnt find anything regardind the frequency where more advanced opperations take place, for example in wich frequency the niagra keys are send to the user and so on.
Does anyone knows more about digital cable frequency charts?
What about head-hend service charts?
 
M

MDS

Audioholic Spartan
I don't know what 'niagra keys' means but the two-way communication between the set top box and the head end is in the 5 - 42 MHz range. The digital channels are in the hundreds of MHz range.

I can acess the diagnostic info on my SA 3100 HD box and it will show the current frequency among other things. I'm sure most boxes have something similar so a tech can diagnose problmes. You just have to find out what magic key sequence will make the info appear.
 

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