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Appendix 2
Interface Board Specifications
Jumper Settings
There are three jumpers provided on each interface board. They’re provided to control the
Power Amplifier (JMP1), the Apex Module (JMP2), and the interface board (JMP3).
Name
Label
Function
JMP1
PA REG ENABLE
Connect to turn PA
ON
, disconnect to turn PA
OFF
JMP2
M–3VDC
Connect to turn Module
ON
, disconnect to turn
OFF
JMP3
C-3VDC
Connect to turn Interface Board
ON
, disconnect to turn
OFF