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Data 05:
The table above lists the binary code which must be
converted to Hexadecimal before sending. For example:
The binary code to tune the sub source to an NTSC
cable channel is “1000 0001”, which translates to “81”
in Hex.
* 7th bit : For which source do you want to change the
channel.
* 6th bit: Use a two part or one part channel. Most cases
just use 0 since it’s ignored when using NTSC.
* 5th bit: Use 0 with NTSC since it can only use the phys-
ical channel number. Normally use 1 for ATSC since most
times it doesn’t matter what the physical number is.
* 4th bit: Set to 0.
* 3-0 bits: Choose signal type.
* Tune Command Examples:
1. Tune to the analog (NTSC) cable channel 35.
Data 00 = Physical of 35 = 23
Data 01 & 02 = No Major = 00 00
Data 03 & 04 = No Minor = 00 00
Data 05 = 0000 0001 in binary = 01
Total = ma 00 23 00 00 00 00 01
2. Tune to the digital (ATSC) local channel 30-3.
Data 00 = Don’t know Physical = 00
Data 01 & 02 = Major is 30 = 00 1E
Data 03 & 04 = Minor is 3 = 00 03
Data 05 = 0010 0010 in binary = 22
Total = ma 00 00 00 1E 00 03 22
Acknowledgement[a][ ][Set ID][ ][OK][Data00][Data01]
[Data02][Data03][Data04][x][a][ ][Set ID]
[ ][NG][Data00][x]
2222.. CChhaannnneell AAdddd//DDeell ((CCoommmmaanndd:: mm bb))
To add and delete the channels.
Transmission [m][b][ ][Set ID][ ][Data][Cr]
Data 00: Channel Delete Data 01: Channel Add
Acknowledgement [b][ ][Set ID][ ][OK/NG][Data][x]
2233.. KKeeyy ((CCoommmmaanndd:: mm cc))
To send IR remote key code.
Transmission [m][c][ ][Set ID][ ][Data][Cr]
GG
p.113 .
Acknowledgement [c][ ][Set ID][ ][OK/NG][Data][x]
Step
NTSC Air
NTSC Cable
ATSC Air
ATSC Cable_std
ATSC Cable_hrc
ATSC Cable_irc
ATSC cable_auto
Reserved
...
Reserved
1
0
0
1
1
0
0
1
1
x
1
2
0
0
0
0
1
1
1
1
x
1
3
0
0
0
0
0
0
0
0
x
1
4
x
x
x
x
x
x
x
x
x
x
Reserved
5
0
1
Use
No Use
Using Physical
Channel
6
0
1
Two
One
Two/One
Part Channel
7
0
1
Main
Sub
Main/Sub
Picture
0
0
1
0
1
0
1
0
1
x
1
119