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Appendices ~ Appendix F: Serial Commands
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MHP
This command changes or reports back the state of the high pass
filter for a microphone.
[DEVICE] MHP <CH> <X>
Explanation
<CH>
CH= 1-8 Parameter to apply to the specified microphone
channel
CH= * Parameter to apply command to all microphone
channels
<X>
X=0 Parameter to set the state to OFF
X=1 Parameter to set the state to ON
X=Null Parameter to return the current state
Return Values
The command will return the updated condition (On=1, Off=0)
of the high pass filter in the same format as the command.
MINIT
This command sets or reports the current setting for the
initialization string sent to the modem when in modem mode.
[DEVICE] MINIT <STRING>
Explanation
STRING can be any character combination up to 30 characters.
If STRING is not specified the command returns the currently
assigned string. To specify no initialization string, set STRING to
“NULL.”
Return Values
The command will return the updated string in the same format
as the command was issued.
MLINE
This command changes or reports back how much gain is
applied to the microphone input. The three settings are 0dB,
25dB, and 55dB.
[DEVICE] MLINE <CH> <X>
Explanation
<CH>
CH= 1-8 Parameter to apply to the specified mic
channel
CH= * Parameter to apply command to all mic channels
<X>
X=1 Parameter to set the state to 55dB gain
X=2 Parameter to set the state to 25dB gain
X=3 Parameter to set the state to 0dB (line level)
X=Null Parameter to return the current state
Return Values
The command will return the updated condition of the gain
applied in the same format as the command.
MMAX
This command changes or reports back the setting for the
maximum number of microphones on each AP800.
[DEVICE] MMAX <X>
Explanation
<X>
X=0 Parameter to set the maximum to no limit
X=1-8 Parameter to set the maximum number of
microphones allowed on
X=Null Parameter to return the maximum number of
microphones allowed on
Return Values
The command will return the updated maximum number of
microphones allowed on for the selected AP800 in the same
format as the command.