Originally Posted by cabzinrah
Ok so it has become pretty clear to me that I needed to do some reading
in an effort to understand this DTV stuff. Here is my current understanding
as a first cut to de-mystify this. Experts please correct where necessary.
- QAM is a transport stream (modulation method) used by the cable companies
(and satellite?). It comes in two flavors, encrypted and unencrypted
(aka clear QAM). Premium channels arrive to our homes as encrypted QAM, and
non-premium channels arrive as clear QAM.
- To view encrypted QAM you need the cable company's STB (a fancy tuner!) to
unscramble the encryption. You then pipe this video in to your FH96 via HDMI,
or component inputs. Additionally (obviously?) the clear QAM can be viewed
this way as well, but there is a second method described below.
- ATSC is a transport stream (modulation method) used by OTA DTV broadcasts
and requires an ATSC tuner in order to receive it.
- The FH96's "ATSC/Digital Cable In" input feeds a tuner which supports
receiving (demodulation) of both clear (unencrypted) QAM and ATSC. However
it is not capable of doing both -concurrently- and I'm not certain if any
digital tuners are made which can.
- Instead, you select which DTV stream type you want the FH96 to receive via
the "ATSC/Digital Cable In" coax input using the "In Digital Tuner Mode"
when you run the "Auto Tuner Setup". "ATSC" for OTA DTV broadcasts and
"Digital" for the cable company's clear QAM. (The raw cable from the wall,
not processed by the cable company's STB)
- An A/B switch feeding -either- the OTA antenna or the raw cable in to the
"ATSC/Digital Cable In" will allow you view both OTA ATSC and cable clear QAM
if you are willing to re-run the "Auto Tuner Setup" with its correct setting
described above each time you toggle the A/B switch. Whew...
Experts, am I close?