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Appendices ~ Appendix E: Serial Commands
Commands can be either uppercase or lower case. Return values are always in
uppercase. For a command to be recognized by the serial port, the command must
be terminated by a carriage return.
For example, a command to disable automatic gain control (AGC) for Mic 2
on AP400 device “0” would have the command line: #30 AGC 2 0. In this
command line, 3=AP400, 0=unit 0, AGC=command, 2=mic channel, 0=off
state). If a command calls for a “null” value, leave a blank in the command line
(for example, “#30 AGC 2” would return the current AGC state of Mic 2 on
device 30).
Command Syntax
All command lines in this manual are set off by the symbol “O”. The serial command
line that follows the “O” uses the following typographic conventions:
<X> Parameters enclosed in “< >” indicate a mandatory parameter
[X] Parameters enclosed in “[ ]” indicate an optional parameter
1-8 Parameters separated by a “-” indicate a range between the
values
4,7,9 Parameters separated by a “,” indicate a list of available values
MREF Words in ALL CAPS bold indicate command text
DEVICE Device type and number on G-Link network. (Valid combinations
depend on connected devices. For an AP400, device type is 3, and
device ID number will always be 0–7.) If omitted, the product
that first receives the command processes it.
* Can be used to set a parameter on all microphone channels, but it
can’t be used to query all mic channels. Note: Using the all-mic
toggle might not produce the desired result, depending on the
state they are in. For example, if one mic is muted and all other
mics are not, an all-mic toggle would mute all others, but unmute
that particular mic.
Error Codes
The following lists possible error messages and their explanations:
Error 1 The address is not valid/out of range or an invalid character.
Error 2 Could not extract a command from the string received.
Error 3 Serial overrun.
Error 4 Reserved.
Error 5 Invalid parameter.
Error 6 Unrecognized command.