jotron RA-7203C User Manual

Jotron AS| TR7750C: Operators Manual  Functional description
Page 3-6
P/N: 84748 (G)
3.2.6 AUX2 connector (RJ45)
This connector is normally connected to equipment used for remote control / remote supervision of
the transmitter.
AUX2 connector, transmitter
Name
PIN
Purpose
KEY_OUT_P
1
Closed=Transmitting, optocoupler output
KEY_OUT_N
2
Closed=Transmitting, optocoupler output
MONITOR_P
3
Monitor output to tape recorder
TXLOW_P
4
Applying a voltage > 5VDC between pin 4 and 5
forces the transmitter into low power
TXLOW_N
5
Applying a voltage > 5VDC between pin 4 and 5
forces the transmitter into low power
MONITOR_N
6
Monitor output to tape recorder
TXKEY_P
7
Applying a voltage > 5VDC between pin 7 and 8 will
key the transmitter
TXKEY_N
8
Applying a voltage > 5VDC between pin 7 and 8 will
key the transmitter
Table 3.2-3, AUX2 connector, transmitter, pin out
3.2.7 REM connector (RJ45)
This connector is normally connected to equipment used for remote control / remote supervision of
the transmitter. It contains the most basic interfaces used for remote control, and will in many cases
be the only connector used.
Note that this connector will also have the most basic functionality for remote controlling the
receiver when the Rx connector is connected to the REM connector on a receiver. In this case the
line, and squelch out signals from the receiver are reflected also on the REM connector.
REM connector, transmitter – Remote control of transceiver
Name
PIN
Purpose
RS485+
1
RS485 (+)
RS485-
2
RS485(-)
LINE_P
3
Diff. line input/output to TA/RA, 600 ohm
TX_KEY_G
4
Grounding this pin will key transmitter
RX_BUSY_OUT
5
RX Busy indicator output (squelch indicator)
LINE_N
6
Diff. line input/output to TA/RA, 600 ohm
ALARM
7
Low=Alarm (TA or TA/RA)
GND
8
Common ground
Table 3.2-4, REM connector, transmitter, pin out
5
6
7
8
9

jotron RA-7203C Specifications

General

Brand	jotron
Model	RA-7203C
Category	Radio
Language	English