Guralp Systems CMG-DCM User Manual
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Operator's guide
interface by typing its IP address into any browser,
e.g.
By default you can use either
http: or https: URLs to access the DCM's
Web site. HTTPS is a secure variant of HTTP, which we recommend
you use in preference to avoid passwords being sent over the network
in clear text. Scream! and similar software applications should also be
configured to use this IP address to communicate with the module. If
the DCM is using a static IP address, you may assign it a name on your
network (although you will still need to use the numeric IP address in
Scream!.)
The DCM also runs a SSH (secure shell) server, which you can use to
access its Linux command line over the network, just as if you had
connected to it over a direct serial link. The standard Linux program
ssh and the freeware Windows program putty are popular SSH
clients.
If you do not wish to use the DCM's Web site, you can continue using
the gcfgdbset command to set other configuration options by name.
For the option names, you should refer to Chapter 4, “Configuration
options” in the DCM manual, where each name is given in
italics with
a description of its action.
The command syntax to use is
gcfgdbset option-name new-value
The options will take effect immediately whenever possible. Some
changes may take some time to complete, since services may need to
be restarted. The gcfgdbset command performs only simple checks
on the new value, so you should check the syntax of the option
carefully.
Communicating with digitizers
You can configure attached digitizers from the DCM Web interface by
clicking on the
Configure – Digitizer link in the serial port table (see
You can also connect to the console of attached digitizers with the
terminal command
minicom -n port-number
Alternatively, you can send individual commands to a digitizer with
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