MX Mk 2 PCB Multi Message Layout Diagram
Trigger selection
jumpers:
A-C = N/C
B-C = N/O
Selectable for each
trigger input.
M1
M2
M3
M4
USB Prog
Socket
Volume
To trigger required message
connect COM to M1or M2 or
M3 or M4
When trigger select jumpers
are set to N/O
When set to N/C removing
COM from M1 or M2 or M3 or
M4 will trigger the message.
Select prior to power
up
POS NEG
M1 M2 M3 M4 COM
See below for single
message input options
Message Programme Options:
M
OPTION
1
MESSAGE 1
2
MESSAGE 2
3
MESSAGE 3(if ordered)
4
MESSAGE 4(if ordered)
Specifications
Operating Voltage:
10-28v DC
Note: set trigger selection jumpers to B-C on all unused message inputs
Operating Current:
Dependant on message and volume 175mA typical 300mA Max
Sound output at 1M: Dependant on message and loudspeaker-95 - 110dB typical at full volume - Adjustable
Trigger:
Switched common - N/O or N/C
Connections:
9 way 2.5mm Sq. terminal block
