Contemporary Research 17 ICE-HE Ethernet Head End
Tuning Commands
“$A5,<dh>,<dl>,3,‟TM‟,<setting>” (7 bytes)
Sets up key functions in the unit
bit 7 = Selects TV frequency tuning mode, 0=CATV,1=Broadcast
bit 6 – 3 = 0
bit 2 = Channel up/down operation, 0=Tune Ring,
1=Send IR Keypad response
bit 1 = Numeric channel labels, 0=num labels off, 1=num labels on)
bit 0 = Alpha channel labels, 0=alpha labels off, 1=alpha labels on
"$A5,<dh>,<dl>,3,'S0',<tune mode>" (7 bytes)
Sets tuner mode to CATV or Broadcast/Antenna
0 = CATV
1 = Broadcast/Antenna
2 = HRC
3 = IRC
“$A5,<dh>,<dl>,3,‟T2‟<channel> ” (7 bytes)
Sets default channel selected when unit powers up
"$A5,<dh>,<dl>,3,'Q2',<video loss mode>" (7 bytes)
Selects response when a loss of video signal is detected
0=Both audio and video muted (default-blue screen for video)
1=Audio muted only
2=Video muted only
3=No muting (do nothing on loss of video)
"$A5,<dh>,<dl>,3,'S0',<tune mode>" (7 bytes)
Sets tuner mode to CATV or Broadcast/Antenna
0 = CATV
1 = Broadcast/Antenna
2 = HRC
3 = IRC
Ex3: “$A5,<dh>,<dl>,9,‟TR‟, $82,5,7,$89,13” sets channels 2-5, 7, and
9-13. You can
specify a range using MSB bit for the first channel; the next byte is the
last.
“$A5,<dh>,<dl>,<ncb>,„TN‟,<channel>,<label>” (variable bytes)
Stores an ASCII string as the channel label. The text will appear briefly
when the channel is selected, if the feature has been activated by TM
command.
Ex1: “$A5,<dh>,<dl>,6,„TN‟, „7‟, „PBS‟ ” unit displays PBS when 7 selected
Ex2: “$A5,<dh>,<dl>,3,„TN‟, „7‟ ” Clears alpha label for channel 7
Ex3: “$A5,<dh>,<dl>,4,„TN‟,0,0” Clears all alpha labels
“$A5,<dh>,<dl>,2,‟TC‟ ”
(6 bytes) – Displays channel label for about 15 sec
1-way units do not send the TM K keypad responses for bit 2
IRC/VDC ignores TM Bit 7 (tuning), SO command sets tuning mode
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