GS_GSR_GCR_UserManual_V21.doc / 18.09.2009
GeoSIG Ltd.
GSR / GCR / AS User Manual
Page 7
3.10. Test Data Sheet
A test data sheet issued with the Instrument exactly characterises input filter performance and other
parameters measured during production test. Consult GeoSIG or your local representative for this
sheet if you wish to have precise specification of a particular instrument.
3.11. Options and Accessories
The following optional equipment is available for the Instrument:
Modem
External or internal modem. This option enables remote control/operation of the Instrument via
telephone line. On request the modem can be made capable of "Calling on Event". This means, as
soon an event triggers the Instrument, the modem automatically calls a pre-set telephone number and
transmits the recorded event (optional).
GSM Modem
The GSR-18 is also available with an external GSM modem. With this modem GSR-18 can send out
parametric information of the triggering events in the form of SMS messages.
GPS
The GPS option is a satellite navigation receiver attached to the Instrument. This unit gives the exact
information about time and position of the instrument. Full details are provided with the GPS option.
Please refer to section 5.5 for more information on GPS and internal clock.
Alarm Output
This option generates two alarm signals (for two threshold levels) in a way similar to that of the
recording trigger, thus allowing the personnel in charge to be informed immediately on the severity of
a strong event. The outputs are 2 relay contacts; either normally open (NO) or normally closed (NC)
(to be specified at order). The maximum voltage to be controlled by the relays is 24 VDC at a
maximum current of 100 mA.
Memory upgrade
The internal memory module can be expanded up to 2 Mbytes on GCR-12 / 16 and up to 128 Mbytes
on GSR-12 / 16 / 18. No memory is implemented in AS-12 / 16, thus no upgrade is possible.
Removable Memory Card
GSR instruments have a special “A” version. These instruments have a built-in interface for using ATA
Compact Flash Memory Cards (JEIDA/PCMCIA) up to 2 Gbytes.
DC Charger
The DC charger enables the user to charge the system off a single 12 VDC source. This is useful if it
is necessary to charge the system by a single 12 VDC external battery.
3.12. Storage
When not in use, the Instrument should be stored at normal room temperature in a dry location. This
will help to maximise the battery lifetime. If the instrument (recorder) is stored for more than a few
weeks, the Instrument should be attached to VAC power for 24 hours to top off the battery charge. In
this case you should remove all data records from the memory. Note that the real time clock continues
operation even when the main switch is in the OFF position. Therefore, unless the clock is turned off
by disconnecting the main battery cable, the Instrument will require occasional recharging. Recharging
for 24 hours every 2 months is recommended.
In the event of a battery failure, the memory and the real time clock are maintained by a lithium
battery.
