Comtech EF Data MetaCarrier MCDD-100, Installation And Operation Manual

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MCDD-100 MetaCarrier Detection Device Revision 3
Serial-based Remote Product Management MN-MCDD100
5–3
When the user-supplied terminal emulator program is configured correctly, upon power-up of the MCDD-100, the Serial Interface Info
Screen appears, followed by the Serial Interface command prompt MCDD-100>. From here, type “help[cr]” or “?[cr]” (without the
quotes) to display the MCDD-100’s available commands and queries, and to review instructions for using the interface.
5.2 Remote Commands and Queries Overview
5.2.1 Basic Protocol
In an EIA-232 configuration, the Controller device is connected directly to the Target device via a two wire-plus-ground connection. 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/Serial Interface) is used to transmit instructions (commands) to –
or to request information from (queries) – the Target device (i.e., the MCDD-100).
•
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.