Specifications

Table Of Contents
INSTALLATION
Page 29 MRC-565 Packet Data Radio Operations and Maintenance
4.1.4 I/O Port
The 44 pin I/O connector on the front panel includes three RS-232 ports and one Sensor port.
MRC provides a standard cable harness that breaks out these four ports as shown below:
MRC-565 I/O Port Cable
Figure 7. MRC-565 44 Pin I/O Cable
A description of each of the other connectors is given below. A description of the various ports is
given below.
4.1.4.1 Operator Port
The Operator Port is normally connected to a local operator terminal using a standard RS-232
straight thru cable with a 9-pin male D connector to 9-pin female D connector. Normally, only 3
wires (pins 2, 3 and 5) are required when connecting to the operator port. The port is wired to
support handshaking where required such as when using a modem. RS 232 levels are +/- 5V.
OPERATOR PORT 9S
Pin
Signal
1
CD
2
Tx Data
3
Rx Data
4
DTR
5
Ground
6
DSR
7
RTS
8
CTS
9
Not Used
The Operator Port will display all warnings, messages, data report, and alerts.
I/O Port
(44 Pin)
Operator Port
(9 Pin)
Aux Port
(9 Pin)
Data Port
(9 Pin)
Sensor Port
(25 Pin)