Operator's guide

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-namenew-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

From the DCM, you can connect to the console of attached digitizers with the command

minicom -n port-number

Alternatively, you can send individual commands to a digitizer with the command

gcli port-number command

In these commands, port-number is the port number and port-name the

port device name to send the command to. To find out these, issue the command serialmap:

Library version: libserialmap Version 1.0.5 with LIBGCONFIGDB 3 serial ports

Port

0,

Key

7000,

name

Data

out port,

device /dev/ttySA0, baud

115200

1,

Key

7001,

name

Port

B, device

/dev/ttySA1, baud 9600

Port

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Minicom Advanced Systems CMG-DCM manual Communicating with digitizers