39
SatDOCK 9555 Installation & User Manual
RS232 (COM PORT)
SPECIFICATION
The HFI is provided with a RS232 serial port for data connection.
It is a 9-pin D-type (female) socket, wired DCE for connection to a
standard PC with a 1:1 cable.
RS232 Port Pin-outs:
Pin
Signal
Direction
Description
1
DCD
RST PC
Data Carrier Detect
2
RXD
RST PC
Received Data
3
TXD
PC RST
Transmitted Data
4
DTR
PC RST
Date Terminal Ready
5
GND
Signal Ground (Common)
6
DSR
RST PC
Data Set Ready (CTS &
DCD)
7
RTS
PC RST
Request to Send
8
CTS
PC RST
Clear to Send
9
RI
RST PC
Ring Indicate (7.5V on Log
port)
RS232 Port Signal Support and Handshaking
The Data port supports full software XON/XOFF handshaking on
data (AT commands bypass this as standard for Hayes modems) or
full hardware handshaking on RTS/CTS with DCD carrier indication.
RS232 Port Electrical Parameters
The COM Port conforms to the RS232 interface specification with
the following parameters:
Parameter
Specification
Communication Rate
19,200 Baud
Protocol
1 start bit, 8 data bits, no parity, 1
stop bit, asynchronous
Voltage Levels and
Sensitivity
Rs232 compliant