Icom IC-M803 Service Manual page 16

• TRANSCEIVER FRONT PANEL (2)
[AF/MOD]
[REMOTE]
[GPS-DATA]
[AF/MOD]
Pin
AF/MOD
number
1
2
3
9-pin
5 1
4
5
9 6
Front panel view 6
7
8
9
[REMOTE]
Pin
REMOTE
number
1
2
9-pin
5 1
3
4
5
9 6
6
Front panel view
7
8
9
[GPS-DATA]
Pin
GPS-DATA
number
BNC
1
1 2
2
Front panel view
EXT-SP CONTROLLER
Pin
Description
name
Modulation input from an external terminal
MOD+
unit.
MOD− Ground terminal for MOD+.
GND Ground terminal for transceiver.
Detected audio output for an external
AF+
terminal unit.
AF− Ground terminal for AF+.
GND Ground terminal for transceiver.
NC This pin is not connected anywhere.
SEND Transmits when grounded.
GND Ground terminal for transceiver.
Pin name
DCD Carrier detection input.
RXD Receive data input.
NMEA-OUT NMEA0183 ver 4.10 data output.
TXD Transmit data output.
NMEA-IN NMEA0183 ver 4.10 data input.
DTR Terminal ready signal output.
GND Ground terminal for transceiver.
DSR Data-set-ready signal input.
RTS Request-to-send data output.
CTS Clear-to-send data input.
NC No connection.
Pin name
NMEA0183 ver 4.10 data input.
NMEA
NMEA Ground for NMEA
ACC
Input impedance: More than 600 Ω
Input level:
Output impedance: More than 600 Ω
Output level:
Ground level:
Input current:
Description
Description
.
4-2
MAINTENANCE
Specification
Approximately
0.77 V rms
–
–
Approximately
770 mV rms
–
–
–
−0.5~+0.8 V
Less than 20 mA
–