GS_GSR_GCR_UserManual_V21.doc / 18.09.2009
GeoSIG Ltd.
GSR / GCR / AS User Manual
Page 21
5.5.1. GPS Option
The GPS (Global Positioning System) is originally used for navigation. It contains several satellites,
which orbit the earth in a distance of about 20 000 km. The signals transmitted by the satellites are
used to get the position; minimum 4 satellites have to be received by the GPS receiver to find its exact
position. The transmitted signals contain also precise time information, which is used to update the
internal clock of the Instrument.
6. Troubleshooting and Maintenance
This section describes troubleshooting procedures using the self-testing features of the Instrument if
configured via GeoDAS and the maintenance needed to be done.
6.1. Self Test
Extensive system tests can be set to be run by the Instrument periodically or can be demanded at any
time via GeoDAS, which would indicate any malfunction of the Instrument as soon as it occurs, to
facilitate adjusting / correcting before loosing important data.
These tests evaluate the functions of the Instrument and its sensor. Some of the functions can even
be permanently supervised.
a
Please refer to the GeoDAS manual to be able to correctly implement the testing procedures.
These tests are divided into 5 groups:
•
Analog
•
Hardware
•
Real Time Clock "RTC"
•
Battery
•
Memory
Each group may be selected individually to be performed. Each group itself contains several test
routines. For each failure during any test a flag is set in the Instrument. The detailed result of the last
test is stored in the header of every event file and can be seen with the Header Information. The
actual test result is visible also in the
Warnings and Errors
window of GeoDAS. Moreover, any
Warnings or Errors are indicated via the red LED and the LCD on the lid of the Instrument.
The Instrument distinguishes between Warnings and Errors. Warnings are malfunctions of the
instrument, which are not serious. All of the Instruments’ essential functions are still intact, i.e.
recording/operation is still possible, and the Instrument is not stopped. An Error indicates a severe
problem of the instrument and may in some cases put the instrument out of function or stop recording.
Following are detailed descriptions of each test routine and recommendations for actions in case of a
negative test result.
a
It is strongly recommended to clear the Warning and Error flags before running any
Test. Please refer to the GeoDAS manual to achieve this.
a
Should a specific Warning or Error occur frequently, contact GeoSIG or your local
representative.
6.1.1. Analog
If "Analog" test is selected, the following test routines will be performed:
The
Noise
test observes the level on every analog channel over a period of time. If failed, a
Warning
will appear.
