Comtech EF Data XPA-200 - Manual (Page 56)

XPA200-7984-I-OPT1, X-Band SSPA Remote Control
XPA200-7984-I-OPT1, Rev.2 5-4
5.3.3.2 RS-485
RS-485 cabling can be implemented with a single ribbon cable
using ‘IDC Mass Terminated’ style connectors or with discrete
wires using ‘solder-cup’ style connectors. A sufficient length
of ribbon cable must be allowed to reach the system monitor and
control computer.
5.4 PROTOCOL
5.4.1 Transmission Mode
The transmission mode is half duplex implemented in
Command/Response convention. This method requires the external
system monitor and control unit to initiate all communications by
command and the SSPA to respond with either confirmation or an
error message. The confirmation may contain status information.
5.4.2 Baud Rate
The default serial port Baud Rate is 9600. Baud rates of
4800, 2400, and 1200 and 300 are also supported.
5.4.3 Format
The following parameters are the default character format.
1 Start Bit
7 Data Bits
2 Stop Bits
1 Parity Bit
An optional character format that can be selected is:
This can only be selected from the Front Panel Menu.
1 Start Bit
8 Data Bits
1 Stop Bit
0 Parity Bits
5.4.4 Character Set
The character set implemented is ASCII.