Service Manual

MM-E 2072-09333-00
2-18
Table 2-4. ACCESSORY Connector Pin Functions (Cont’d)
Pin Designation Description
22 DSC/KW_ALC BDM – Data serial clock/optional external 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/optional external RF power amplifier tune
26 GND Ground
27 FWD CLOSE LOOP ALC radio loop closure input (from optional external amplifier)
28 RXC Receive input (point-to-point protocol to host/HLC)
29 TXB RS-232 transmit output to “smart” external accessories
30 AMP REV Maintain constant power at transceiver output (optional function)
31 RXD Receive input (point-to-point protocol to host/HLC)
32 TX AUDIO OUT Input to LORD baseband TX path from external device (for example,
modem)
33 RXB RS-232 protocol receive input to “smart” external accessories
34 RX AUDIO OUT Input to LORD baseband RX path from external device (for example,
modem)
35 RX AUDIO IN Output from LORD baseband RX path to external device (for example,
modem)
36 AMP FWD Maintain constant power at transceiver output (from optional external
amplifier)
37 VP PTT PTT output (active low) (optional function)
38 TXD Transmit output (point-to-point protocol to host/HLC)
39 TXC Transmit output (point-to-point protocol to host/HLC)
40 TX AUDIO IN Output from LORD baseband TX path to external device (for example,
modem)
41 EXT RX AUDIO(2)+
42 EXT TX AUDIO(2)-
Audio output from the optional ISB processor (secondary sideband)
43 EXT RX DATA-
44 EXT RX DATA+
Baseband output (0 dBm, 600 Ω), unsquelched
Table 2-5. Micom-Z VDC IN Power Connector, Pin Functions
Pin Designation Description
1 Power Positive input line
2 Ground Return (negative) line