Service Manual

MM-E 2072-09333-00
2-20
Table 2-7. Cooling Tray 25-Pin ACCESSORY Connector Pin Functions (Cont’d)
Pin Designation Description
20 EXT ALARM External alarm output (open collector, pulled to ground when external
alarm is activated
21 VPP Flash programming voltage, input to BDM
22 DSC/KW_ALC BDM – Data serial clock/optional RF power amplifier ALC
23 SQ GATE Squelch open/closed indication output
24 DSO/FAN ON/OFF BDM – Data serial out/fan control
25 FREEZE/KW TUNE BDM – Freeze/kW amplifier tune