GeoSIG Ltd.
GS_GSR_GCR_UserManual_V21.doc / 18.09.2009
Page 4
GSR / GCR / AS User Manual
Instrument. It carries the output signals from the sensor(s) and the test signals from the Instrument.
The SENSOR
connector pr12 VDC power to the sensor(s). Different types of sensors with
following sensor voltage output ranges are supported:
•
GCR 12 / 16 recorders:
2.5 VDC ± 2.5 VDC
•
AS-12 / 16 and GSR-12 / 16 / 18 recorders:
standard:
0 ± 10 VDC (20 Vpp) or 0 ± 2.5 VDC (5 Vpp) differential
optional:
0 ± 5 VDC (10 Vpp) differential
0 ± 20 VDC (40 Vpp) differential
RS-232
This connector is typically for attaching a PC to the Instrument for configuring operating parameters,
retrieving data or performing system tests. Maximum data rate is 115’200 Baud.
INTERCON (Optional)
This connector allows the Instrument to be interconnected to a recording array. Different types of
interconnections may be realised, please refer to separate documentation from GeoSIG.
OPTION (Optional)
Two options are supported by the option connector:
•
The alarm option gives two different output signals (relay contacts) to activate alarm indicators
such as buzzer or flashlights.
•
The connector is also used to connect an external time source such as GPS to the Instrument. The
signal of this external source can be either a pulse or an RS-232 level signal.
Figure 3. Connectivity Options
POWER
Through this four-pin connector the internal battery charger is supplied with 115/230 VAC power.
Alternatively, external batteries for powering the Instrument may be connected here (with DC Input
Option).
