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DIRECTV Set-top box information for the installer
5.4 GetCommandVersion (0x84)
Command Label
Command Byte
Input Parameter(s)
Return Data Stream
Return Response
Return Value
Description
5.5 GetCurrentChannel (0x87)
Command Label
Command Byte
Input Parameter(s)
Return Data Stream
Return Response
Return Value
Description
Example #1:
Scenario –Find out what channel a single tuner STB is tuned to (STB is tuned to channel 276
which in hexadecimal notation is 0x114).
Input GetCurrentChannel Command 0xFA 0x87
Input
0xFA
DIRECTV Proprietary
Version 1.1.a
GetCommandVersion
0x84
None
[VerMajor] [VerMinor]
[Reserved1] [Reserved2]
As defined in this document in Section 1.5
VerMajor: 0x00 – 0xFF; VerMinor: 0x00 – 0xFF
Reserved1, Reserved2: 0x00
ACK_FCNOK
: Always Success
0x0000
: Always Success
This command displays the version of the Data Port Service Command ICD
specification the software was coded to.
GetCurrentChannel
0x87
None
[majorchnHI][majorchnLO][minorchnHI][minorchnLO]
ACK_FCNOK
: Success
NACK_FCNOK : Failure – STB not tuned to a DIRECTV System channel
0x0000
: Success
Non-Zero
: Failure – STB not tuned to a DIRECTV System channel
The STB will execute a GetCurrentChannel command by providing the major/minor
channel number (i.e., for the DIRECTV system channel the STB is tuned to) in the
Return Data Stream.
0x87
Page 20 of 49
November 17, 2005
DTV-MD-0058
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