DIRECTV D12MP Installation Guide - Page 26

DIRECTV Set-Top Box Information for the Installer MajorChnLO : 0x00 - 0xFF MinorChnHI : 0x00 - 0xFF MinorChnLO : 0x00 - 0xFF Return Data Stream None Return Response ACK_FCNOK : Success NACK_FCNOK : Failure - Not a DIRECTV System channel Return Value 0x0000 : Success 0xFFFF : Channel not found in Program Guide 0xFFFE : Channel is not a DIRECTV System channel 0x0002 : No Video Control Word 0x0004 : No Audio Control Word 0x0008 : No HS Data Control Word 0x0010 : No Low-Speed Data Control Word 0x0020 : No System Clock Reference 0x0040 : No Presentation Time Stamp 0x0080 : Tuning Error 0x0100 : Video Error 0x0200 : Access Error 0x0400 : Buffer Overflow 0x0800 : Acquisition Not Complete 0x1000 : Audio Error 0x2000 : Video Timeout 0x4000 : Inactive Transponder 0x1001 : Failure - Channel not found in program guide 0x1002 : Failure - Channel not a DIRECTV system channel 0x1003 : Failure - Channel not authorized 0x1004 : Failure - Channel blocked by viewer 0x1005 : Failure - Channel rating limit exceeded 0x1006 : Failure - Channel spending limit exceeded Others : Failure - Bad command Description The STB will execute an OpenUserChannel command by tuning to and decoding streams for the specified guide major/minor channel number. Example: Change to channel 276 (hex 0x114) on a single tuner STB. Controller -> STB: FA (Command Prefix) Controller -> STB: A6 (Command ID) STB -> Controller: F0 Controller -> STB: 01 14 FF FF (Command acknowledged) (Parameters[1]) STB -> Controller: F2 (Received the correct number of parameters) DIRECTV, Inc. Version 2.2 Page 26 of 42 March 5, 2008 DTV-MD-0058