Guralp Systems CMG-DCM - Manual (Page 52)

CMG-DCM Data Communications Module
Uptime
This section displays the time the DCM last rebooted and calculates
how long it has been running since that time.
Disk/Flash Status
This section reports the current status of the DCM's storage media.
•
First, the DCM reports whether the disk is currently powered,
and whether the heater is switched on.
•
Next is a table showing each file system in use by the DCM,
with its size and current usage (in Mb and as a percentage.) To
see the files in each file system, click Explore.
A standard DCM has two Flash partitions mounted at /nand0 and
/nand1. These are used alternately to record data. If the DCM has
recently used its USB disk, this will also be shown in the table.
The DCM does not power up the USB interface specially to build this
table, so if you remove the USB disk the DCM may continue to include
it in the table until it attempts a disk operation.
Tamper lines
This section, if present, reports the status of the tamper lines relayed to
the DCM over an external State of Health interface:
Input State Last Closed (Low) Last Open (High)
0 open (never) Wed Jul 7 16:04:48 2004
1 open (never) Wed Jul 7 16:04:48 2004
2 open (never) Wed Jul 7 16:04:48 2004
52 Issue F