Protocol; Table 6-1. Protocol Description - Comtech EF Data KPA-020IN Installation And Operation Manual

Ku-Band Solid-State Power Amplifier
Remote Control
6.5

Protocol

Refer to Table 6-1 for protocol description. Protocol is divided into six subjects:
6.5.1 Format
The following parameters are the default character format:
Start Bit
Parity Bit
Stop Bits
Data Bits
An optional character format that can be selected is:
Note: This can only be selected from the Front Panel Menu.
Parity Bit
Start Bit
Stop Bit
Data Bits
•
Transmission Mode
•
Baud Rate
•
Format
•
Character Set
•
Response Timeout
•
Bus Inactivity Requirements
Transmission Mode
Baud Rate
Character Set
Response Timeout
Bus Inactivity
Requirement
1
1 (Selectable, Even or Odd, via the front panel menu or remote interface
2
7
0
1
1
8

Table 6-1. Protocol Description

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 KPA to respond with either confirmation or an error
message. The confirmation may contain status information.
The default serial port Baud Rate is 9600.
Baud rates of 4800, 2400, 1200, and 300 also are supported.
The character set implemented is ASCII.
A minimum of 500 milliseconds should be provided before declaring a
No Reponse instance, at which time the command should be
re-transmitted.
Comtech EF Data recommends that a minimum of 50 milliseconds bus
inactivity be provided by the user between the receipt of a response
from an addressed KPA and issuing the next command on the serial
bus.
6-4
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MN/KPA.IOM