GS_GSR_GCR_UserManual_V21.doc / 18.09.2009
GeoSIG Ltd.
GSR / GCR / AS User Manual
Page 9
4.2. Installation
a
Many times the locations of seismic equipment are highly exposed to electrical disturbances
caused by lightning or by the industrial environment. Although the Instrument contains over
voltage protection, it may sometimes be necessary to use additional surge protectors for the
equipment. Contact GeoSIG or your local representative for more information.
4.2.1. Supply Voltage Selection
a
AC powered Instrument only.
The Instrument may be powered from 115 VAC up to 230 VAC, 50 or 60 Hz. The Instrument contains
a power supply with a transformer, which has to be configured properly to function with either 115
VAC or 230 VAC.
4.2.2. Connection of External DC Power Supply
a
DC powered Instrument only.
The DC powered Instrument can be powered from an external 15 VDC power supply through the 7
pole
POWER connector. Please see Appendix B for pinout information. The external power supply
has to deliver a minimum of 300 mA at 15 VDC.
4.2.3. Requirements for the Instrument Foundation
Minimum surface area requirements
•
with internal sensor:
50 x 50 cm
•
with external sensor:
50 x 75 cm
•
with external sensor and interconnection:
50 x 100 cm
Height requirements
Minimum surface area specifications indicated above are only applicable up to a height of maximum
25 cm. Foundation dimensions should be expanded in each direction proportionally by increasing
height.
Anchorage requirements
Foundation has to be very well anchored or adhered preferably to a rock or concrete base. In case of
a need for a foundation on soil, a concrete cubicle of 1 m
3
has to be cast in the ground to serve as a
base.
4.2.4. Mounting the Instrument
The following are the typical items needed for installation:
•
Instrument
•
Power
Cable
•
RS-232
Cable
•
This Manual and its Appendix
•
Set of Tools
•
4 x M6 x 40 mm bolts with concrete anchors
•
Laptop PC with GeoDAS installed, to check or configure the Instrument
•
Any accessories or peripheral equipment for the Instrument and their manuals, such as external
sensor, GPS, external modem, etc.
