Guralp Systems CMG-DCM - Manual (Page 82)

CMG-DCM Data Communications Module
6.2 Serial ports
Clicking on Configuration – Serial ports displays the serial port table.
Every serial port on the DCM's internal board is listed in this table.
Port : This column shows the DCM's name for each port. A stand-alone
DCM has three RS232 serial ports brought out on 10-pin mil-spec
connectors, labelled PORT A, PORT B and DATA OUT.
The labelling is provided for convenience; you can change it if it does
not match your site requirements. Each port may be used for
communication in either or both directions.
Note that the standard DCM does not expose the Console (COM1),
COM2 or COM3 ports. The external ports begin at COM4.
Device name : This column gives the Linux device name for each port.
You may need this if you want to write your own scripts.
Service : The service currently running on the port (by default, getty.)
Baud rate : The current baud rate of the port (by default, 115200.)
Handshaking : The handshaking protocol currently being used on the
port, if any (by default,
none).
GCF blocks seen : The number of GCF blocks which have been
received on this port. This will only be non-zero for ports set to gcf_in.
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