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Special Commands - NHT Specification

Rs232 protocol specification

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The following commands need one, two or several bytes: <command> [<data>] [<data>] ...
Command
RS_ENABLE_CONTROL
RS_DISABLE_CONTROL
RS_QUERY_SYSTEM_STATUS
Output data
RS_QUERY_VERSION
Output data
RS_STORE_EEPROM

Special Commands

Data
1
224
Enables the reception of most RS232 commands
Reception is deactivated after every received command,
2
82
so this command must be sent again before the next
3
83
4
33
1
225
Disables the reception of RS232 commands. This
command is seldom need as control is usually disabled
1
227
Request for various status information. No need to
enable RS control. This command sends out the
1
223
2
255
RS_ZONE_AUDIO_SOURCE (see Output data section)
RS_ZONE_VIDEO_SOURCE (see Output data section)
For the
exact
output see
the
x
command
RS_SEND_CHANNEL_INFO (see Output data section)
description
of the each
RS_AUDIO_INPUT_TYPE (see Output data section)
command
on the right
1
229
Sends out the software version number. RS control must
219
1
2
1...255
3
0...255
4
0...255
1
230
7/15
Description
command.
after every RS command.
information described below.
Header
Header EOT
RS_VOLUME (see Output data section)
RS_MUTE (see Output data section)
RS_AUDIO_SOURCE (see Output data section)
RS_VIDEO_SOURCE (see Output data section)
RS_OPER_MODE (see Output data section)
RS_ZONE_VOLUME (see Output data section)
RS_ZONE_MUTE (see Output data section)
RS_DIMMER (see Output data section)
RS_STEREO_MODE (see Output data section)
RS_SIGNAL_TYPE (see Output data section)
RS_COMPRESSION (see Output data section)
RS_CINEEQ (see Output data section)
RS_BASS (see Output data section)
RS_TREBLE (see Output data section)
RS_CENTER (see Output data section)
RS_SURROUND (see Output data section)
RS_SUBWOOFER (see Output data section)
RS_TRIGGER1 (see Output data section)
RS_TRIGGER2 (see Output data section)
RS_TV_SYSTEM (see Output data section)
be enabled first.
version number MSB (1.25)
version number LSB (1.25)
Customer/product ID
Writes a byte to the EEPROM
See Appendix 1 for more information.

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