Remote Commands And Queries Overview; Basic Protocol - Comtech EF Data MBT-5000A Installation And Operation Manual

7.2

Remote Commands and Queries Overview

7.2.1

Basic Protocol

Whether in EIA-232 or EIA-485 mode, all data is transmitted as asynchronous serial characters, suitable for transmission and reception by
a UART. The asynchronous character format is 8-N-1 (8 data bits, no parity, one stop bit).
The supported baud rates are 2400, 4800, 9600, 19200, and 38400 baud.
All data is transmitted in framed packets as asynchronous serial characters, suitable for transmission and reception to the Controller using a
universal asynchronous receiver/transmitter (UART). Controller-to-Target data is carried via EIA-232 electrical levels on one conductor, and
Target-to-Controller data is carried in the other direction on the other conductor:
•
Controller-to-Target: The Controller device (e.g., the user PC/CLI) is used to transmit instructions (commands) to – or to request
information from (queries) – the Target device (i.e., the MBT-5000A).
•
Target-to-Controller: The Target, in return, only transmits response information to the Controller when specifically directed by the
Controller.
For Serial Remote Control, all issued commands (Controller-to-Target) require a response (Target-to-Controller). This response is
either to return data that has been queried by the Controller, or to confirm the Target's receipt of a command to change the Target's
configuration.
Serial-based Remote Product Management
MBT-5000A L-Band Up/Down Converter System
7–3
Revision 1
MN-MBT-5000A