m908 User Manual, Rev. G
GPIO configuration is accessed in the
screen.
The table below contains the available input and output functions as well as the logic mode.
GPIO Functions
MODE
FUNCTION
Description
Trigger
INPUT
TALKBACK
Activates TALKBACK
logic level
INPUT
User Switch A Activates User Switch A
logic level
INPUT
User Switch B Activates User Switch B
logic level
INPUT
User Switch C Activates User Switch C
logic level
INPUT
Input 1-16
Selects Monitoring Input 1-16
edge
INPUT
CR1-3
Selects Control Room Speaker System
CR1, CR2, or CR3
edge
INPUT
MUTE
Activates MUTE function
logic level
INPUT
DIM
Activates DIM function
logic level
INPUT
MONO
Activates MONO function
logic level
INPUT
L-R
Activates L-R (left minus right) function
logic level
INPUT
MON>CUE
Activates MON>CUE function
logic level
OUTPUT
TALKBACK
RCU
TALKBACK RCU tally
OUTPUT
TALKBACK
EXT
TALKBACK EXT tally
OUTPUT
User Switch A User Switch A tally
OUTPUT
User Switch B User Switch B tally
OUTPUT
User Switch C User Switch C tally
OUTPUT
Input 1-16
Monitoring Input 1-16 tally
OUTPUT
CR1, CR2,
CR3
Control Room Speaker System CR1, CR2,
or CR3 tally
OUTPUT
MUTE
MUTE function tally
OUTPUT
DIM
DIM function tally
OUTPUT
MONO
MONO function tally
OUTPUT
L-R
L-R (left minus right) function tally
OUTPUT
MON>CUE
MON>CUE function tally
The table and illustration below indicates the locations of each GPIO pin and the circuit board
jumper for selecting the logic level for each pin. See the m908
Electrical Specifications
to make
sure the GPIO electrical characteristics are compatible with your external equipment.
Before adjusting the GPIO pcb jumpers turn of the power at the PSU and remove
Page 106 of 135
