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32 OPTION PORT PINOUT
25 pin D-sub connector for remote control is provided on the rear panel of IC-FR9010/FR9020. The functions of
each pin are as follows:
Pin No. Name
1
CH 0
2
CH 1
3
CH 2
4
CH 3
5
Unassigned
6
REM MON
7
GND
8
Unassigned
9
REM D/A
10
DEM OUT
11
BUSY
12
RSSI
13
MOD1
14
GND
15
PTT
16
MOD 2
17
SIMP
18
ERR
19
DECODE
20
RX AUD 1
21
RX AUD 2
22
TX OUT
23
EXT PW/SW
24
Remote
25
+12 V
NOTE: Pins 1–4, 6 and 9 are only available when pin 24 (Remote Mode) is at 0 V. See page 8 for more
information on display indications.
11
Description
LSB external binary channel
selection
External binary channel
selection
External binary channel
selection
External binary channel
selection
Remote Monitor
Ground
Remote Digital Analog select
Discriminator audio out
Channel busy indication
Receive signal strength
indicator
External audio modulation input
Ground
Push to talk
External modulation input
Simplex mode selected
Alarm indication
Decode valid indication
Buffered receive audio
Buffered receive audio
External power switch
External channel selection
mode
I/O Levels
Comments
l
0 to +3.3 V DC 0000 is channel 1
l
0 to +3.3 V DC
l
0 to +3.3 V DC
l
0 to +3.3 V DC 1111 is channel 16
l
0 to +3.3 V DC +3.3 V = Monitor On
0 V – 3.3 V
+3.3 V = Analog
0 V = Digital
O ≈330 mVrms
C4FM on DIGITAL MODE
1 kHz
@ ±3 kHz
O 0 to +3.3 V DC +3.3 V = busy
O 0 to +2.5 V DC
analog
≈50 mVrms
l
1 kHz
for ±3 kHz
l
0 to +3.3 V DC 0 V = transmit
≈400 mVrms
l
After limiter and filtering/LOW
1 kHz
FREQ
for ±3 kHz
i.e. External CTCSS/DCS IN
O 0 to +3.3 V DC 0 V = simplex
O 0 to +3.3 V DC Duty Cycle Determines which
alarm
O 0 to +3.3 V DC 5 V = valid signaling
O ≈700 mVrms
1 & 2 Can produce 0 dBm into
600 Ω input
1 kHz
@ ±3 kHz
O ≈700 mVrms
1 & 2 Can produce 0 dBm into
600 Ω input
1 kHz
@ ±3 kHz
O
l
0 Open
0 V = ON
source
l
0 to +3.3 V DC 0 V = external
O 12 V DC
800 mA Max out
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