6 remote control serial interface – Comtech EF Data HPCST-5000 User Manual
Page 114
Redundant System Installation
High-Power TWTA Satellite Terminals
3–30
Rev 1
3.4.2.1.6 Remote Control Serial Interface
The HPC-1110 provides for a remote serial interface using either a EIA-232-C or -485
type interface.
The EIA-485 connector is programmed according to the following switch settings on the
ADDRESS select switch on the rear panel.
Setting
SW #
4-Wire
2-Wire
1
ON
ON
2
OFF
ON
3
ON
OFF
4
N/A
N/A
5
N/A
N/A
6
AD0
AD0
7
AD1
AD1
8
AD2
AD2
9
AD3
AD3
10
AD4
AD4
Note: The address switch settings from SW6 to SW10 are user-defined.
The EIA-485 pinouts are as follows:
EIA-485
Pin #
4-Wire
2-Wire
1
(-) TX Data
(-) TX/RX Data
2
(-) RX Data
(-) TX/RX Data
3
N/C
4
N/C
5
GND
6
(+)TX Data
(+) TX/RX Data
7
(+) RX Data
(+) TX/RX Data
8
N/C
9
N/C
The EIA-232-C pinouts are as follows:
Pin #
EIA-232-C
1
DCD — Data carrier Detect
2
RXD — Received Data
3
TXD — Transmitted Data
4
DTR — Data Terminal Ready
5
GND
6
DSR — Data Send Ready
7
RTS — Request to Send
8
CTS — Clear to Send
9
RI — Ring Indicator