|
FM/T/R/D
Series
--- MORE
FM-960
MODEM RS-232 9-Pin
I/O Assignment
|
PORT |
Assignment
|
|
2
|
232
OUT
|
|
3
|
232
IN |
|
5
|
GND
|
|
7
|
RTS
|
|
8
|
CTS
|
FRT-230
Transceiver RS-232 9-Pin I/O Assignment
|
PORT |
Assignment
|
|
2
|
PTT
Transmitter Control ( GND Tx) |
|
3
|
MIC
Audio Signal Input |
| 4 |
Modulation Input |
|
5
|
12
Volt Power Negative ( GND )
|
|
8
|
Audio
Power Output
|
|
9
|
12
Volt Power Positive
|
FT-230
Transmitter RS-232 9-Pin I/O Assignment
|
PORT |
Assignment
|
| 1 |
Empty |
|
2
|
+
PTT Transmitter Control ( High Trigger +5 V to +12 V ) |
|
3
|
MIC.
Audio Signal Input ( Microphone ) |
| 4 |
Data Modulation Input (
Digital Data Signal ) |
|
5
|
GND
( for Microphone, Data Input )
|
| 6 |
Transmitter
Indicator ( LED Positive ) |
| 7 |
–
PTT Transmitter Control ( Low Trigger ) |
|
8
|
12
Volt Power Negative ( GND )
|
|
9
|
12
Volt Power Positive
|
FR-230
Receiver
RS-232 9-Pin I/O Assignment
|
PORT |
Assignment
|
| 1 |
Additional
Squelch Potential Meter ( 30
Ω
) |
|
2
|
Additional
Volume Potential Meter ( 30k
Ω
) |
|
3
|
Discriminator
Direct Output |
| 4 |
Audio
Signal Amplifier Power Input ( +12 V ) |
|
5
|
Receiver
De-couple Input ( +5 V ~ + 12 V )
|
| 6 |
Loud
Speaker Output ( 4Ωor
8Ω
) |
| 7 |
GND
|
|
8
|
12
Volt Power Negative ( GND )
|
|
9
|
12
Volt Power Positive
|
BACK
| 
