Contemporary Research ICW-IRC Manuale Utente

11 

    

IR TV Controller

 

 

SO  "$A5,<dh>,<dl>,3,'S0',<tune mode>" (7 bytes) 

Sets tuner mode to CATV or Broadcast/Antenna 

  0 = CATV  

  1 = Broadcast/Antenna  

  2 = HRC 

TR  “$A5,<dh>,<dl>,<ncb>,’TR’, [<chan 1>, <chan N>]”  (variable bytes) 

This command stores a Tune Ring, a series of preset channels accessed by channel 

up/down commands. 

 

Ex1: “$A5,<dh>,<dl>,6,’TR’, 5,4,8,11”  sets ring to channels 5, 4, 8 and 11 

Tip:   The ring follows the stored order, channels do not have to be in ascending 

order 

x Ex2: “$A5,<dh>,<dl>,2,’TR’ ” clears the Tune Ring, locks unit to current channel 

Tip:   In the above mode, the IR Keypad channel up/down response to the Head-

End, so the system will know the user is trying to change channels. In 

response, the system could change channels on a media sources, like a VCR or 

satellite. 

Ex3: “$A5,<dh>,<dl>,8,’TR’, $82,5,$87,11”  sets channels 2-5 and 7-11. You can  

       specify a range using MSB bit for the first channel; the next byte is the last. 

Channel Labels  TN  “$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 IRC Setup command (TM). 

 

Ex1: “$A5,<dh>,<dl>,3,‘TN’, ‘7’, ‘PBS’ ” IRC displays PBS when 7 is selected 

Ex2: “$A5,<dh>,<dl>,3,‘TN’, ‘7’ ” Clears alpha label for channel 7 

Ex3: “$A5,<dh>,<dl>,3,‘TN’,0,0” Clears all alpha labels 

TC  “$A5,<dh>,<dl>,2,’TC’ ” (6 bytes) – Display current channel label for about 15 

seconds 

 “$A5,<dh>,<dl>,3, ‘Y’ <I/0 Port>’ ”  (7 bytes) 
Turns the two internal closures on and off. Closure 1 is typically used to control the 

optional buzzer, Closure 2 typically used to control an external camera power relay. 

 

  “$A5,<dh>,<dl>,3, ‘Y10’”  turns Closure 1 off  

  “$A5,<dh>,<dl>,3, ‘Y11’”  turns Closure 1 on 

  “$A5,<dh>,<dl>,3, ‘Y20’”  turns Closure 2 off 

  “$A5,<dh>,<dl>,3, ‘Y21’”  turns Closure 2 on 

LM  “$A5,<dh>,<dl>,3,'LM',<control>” (7 bytes) 

Locks out front panel and IR remote control functions. 

 

  Bit 7       Selects IR remote control operation (0=enabled, 1=disabled) 

  Bit 6       Selects volume control operation (0=enabled, 1=disabled) 

  Bit 5 - 1    Always 0 

  Bit 0       Selects IRC front panel buttons operation (0=enabled, 1=disabled) 

SP  "$A5,0,0,3,'SP'" (6 bytes) 

Queries the Head-End for the number of devices present on the network and the 

number of devices expected.