RM24100D operating manual Page 2
1 Installation
Connect the RM24100D unit as indicated in the following diagram. Use of an external 1A fuse is recommended.
DB9 Female Pinout (connecting cable must have a DB9 male connector):
DB9 Female Pin
RS232
RS485
RS422
1
DCD
(Output from radio modem)
2
TXD (output)
(Serial data exiting radio
modem)
D+ (B)
RXD+ (B)
3
RXD (input)
(Serial data entering radio
modem)
D- (A)
RXD- (A)
4
DTR
(Input to Radio modem)
5
GROUND
GROUND
GROUND
6
DSR
(Output from radio modem)
7
RTS
(Input to Radio modem)
TXD- (A)
8
CTS
(Output from radio modem)
TXD+ (B)
9
POWER
(8-30VDC)
POWER
(8-30VDC)
POWER
(8-30VDC)
Pin 1: 8V-30VDC
Power LED
(Flashing)
Optional DB9
Data Connection
Antenna Connection
Pin 2: Ground
Pin 3:
RS232 RTS (
INPUT
)
RS422 TXD- (A)
Pin 6:
RS232 CTS (
OUTPUT
)
RS422 TXD+ (B)
RF Receive LED
(Green)
RF Transmit LED
(Orange)
Pin 4:
RS232 TXD (
OUTPUT – serial
Data exiting radio modem
)
RS485 D+ (B)
RS422 RXD+ (B)
Pin 5:
RS232 RXD (
INPUT – serial
Data entering radio modem
)
RS485 D- (A)
RS422 RXD- (A)
