Guralp Systems CMG-DCM - Manual (Page 123)

Operator's guide
centred;
•
which, if any, of the channels are currently being calibrated (the
channel appears with a + if this is the case).
Tamper lines
The command tamper provides information about the current state of
the DCM tamper lines. Issued with no arguments, it will output the
status of all tamper lines once every 10 seconds. Including the -w
option causes it to exit after printing the status once only:
[root@dcm-87AD9C933DE1 ~]# tamper -w
Input State Last Closed (Low) Last Open (High)
0 open (never) Mon Jan 5 21:50:37 1970
1 open (never) Mon Jan 5 21:50:37 1970
2 open (never) Mon Jan 5 21:50:37 1970
3 open (never) Mon Jan 5 21:50:37 1970
4 open (never) Mon Jan 5 21:50:37 1970
5 open (never) Mon Jan 5 21:50:37 1970
6 open (never) Mon Jan 5 21:50:37 1970
7 open (never) Mon Jan 5 21:50:37 1970
8 closed (never) (never)
9 closed (never) (never)
10 closed (never) (never)
11 closed (never) (never)
12 closed (never) (never)
13 closed (never) (never)
14 closed (never) (never)
15 closed (never) (never)
The output of the tamper command is included on the Summary page
under Actions on the DCM Web site.
8.5 Updating the DCM
Over the Internet
The easiest way to ensure that your DCM has all the latest software
packages is to update it over the Internet.
The DCM is provided with a simple command-line script, upgrade,
which checks for new versions of all packages in the distribution on
the Güralp Systems Web site and installs them as necessary. It also
rebuilds the configuration database to work with the new packages,
resets it, and reboots the machine.
Running upgrade will restore the DCM to its factory settings, so
make sure you will still be able to communicate with it before you
issue the command, either
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