GeoRes System HC-W - Geospace Technologies

GeoRes System HC-W
GeoRes System HC-W
Station Capacity
Remote Well Capability
Chassis Expansion
Borehole Power Control
Record Length
Overlapping records
Data Format on Disc
Data Storage System
High Capacity Well Bore Data Acquisition, and RAID System
Scalable: User Specified number of DS-250 or DW-150 modules
6 fiber optic telemetry inputs
Scalable: Up to 8 chassis
Lockout Tagout capability is provided
64 seconds with no intra-time
System can time stamp and store overlapping timing
SEGD Rev2, SEGY Rev1
Internal 2 terabyte RAID or External Raid if required.
Time Break Trigger, Continuous Acquisition
Recording Modes
Overlapping Shooting (System overlapping: time stamp on header)
Remote Control
Can be operated remotely via secure network
GPS Synchronization
Better than 1 part in 10 million
GeoRes HC system architecture is designed to be flexible for
Flexible Architecture
easy software upgrades. Works with HC-A system for
additional simultaneous analog recording.
Operating Temperature
0 to +50 oC
Storage Temperature Range: -20 to 70 oC
Auxiliary Module
Analog Channels
Power Supply
Central UPS
Twelve 24-Bit Analog inputs for source reference
Twenty Four 24-Bit Analog inputs for surface Geophones
120-240 VAC
To provide power in case of power interruption
All specifications subject to change without notice
GeoRes System Tests
The seismic channel performance and sensor tests can be performed
by the GeoRes System. The user can choose a partial or complete
set of tests that can be run in sequence. The user can also choose to
display all of the results or only the failures. In the tests described
below, the system software automatically controls the Channel Input
Switch Positions and Test Oscillator Settings during the tests. All
tests can be run at all sample intervals and preamp gains of the
GeoRes Seis Channels.
- Harmonic Distortion
- Impulse Response
- Equivalent Input Noise
- Gain Accuracy
- Common Mode Rejection
- Crossfeed (multi-channel)
- Instantaneous System Dynamic Range
- Geophone Impedance and THD
GeoRes System HC-W
Features and Specifications
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Built-in GPS
Built-in full resolution test signal
generator
Scalability up to 8 chassis
Continuous recording mode
Compatible with vibratory, explosive and
impulsive energy sources
12 analog inputs for source signal
recording
24 analog inputs for standard analog
sensor seismic recording
Max input signal: 1.80 Vrms @ 0 Gain
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6 fiber optic telemetry inputs for remote well
operation
24-bit delta-sigma ADC
1 Hz to 1600 Hz freq. response
<1 μsec. of UTC (GPS clock)
Operating Temperature: 0° C to +50° C
Selectable Gains:
 X1, X2, X4, X8, X16, X32, X64
 0, 6, 12, 18, 24, 30, 36 dB
Sample Intervals:
 .25, .5, 1, 2, 4 milliseconds
System Dynamic Range @ 2 msec SI
124 dB @ Gain 0 dB
123 dB @ Gain 6 dB
122 dB @ Gain 12 dB
120 dB @ Gain 18 dB
115 dB @ Gain 24 dB
110 dB @ Gain 30 dB
105 dB @ Gain 36 dB
Total Harmonic Distortion: 0.001%
Total Dynamic Range: 140 dB
System Dynamic Range @ 0dB Gain:
126 dB @ 4 msec SI
124 dB @ 2 msec SI
120 dB @ 1 msec SI
117 dB @ .5 msec SI
106 dB @ .25 msec SI
Equivalent Input Noise @ 2 msec SI:
1.13 μV @ Gain 0 dB
.58 μV @ Gain 6 dB
.33 μV @ Gain 12 dB
.22 μV @ Gain 18 dB
.19 μV @ Gain 24 dB
.18 μV @ Gain 30 dB
.17 μV @ Gain 36 dB
Input Impedance:
20 kohms/0.06 μf Difference Mode
5 kohms Common Mode
Common Mode Rejection: 80db
Gain Accuracy: 1%
Anti-Alias Filter:
Rejection @ Nyquist: 130 dB
Frequency @ -3 dB: 0.83 Nyquist
Linear or Minimum Phase
GPS Time Standard: <1 ppm
Mounts in a standard 19” rack.
All specifications subject to change without notice
7007 Pinemont Drive • Houston, Texas 77040 USA
www.geospace.com
Tel: 713.986.4444 • Fax: 713.986.4445
Geospace Technologies, Canada
Regional 2735 - 37th Avenue N.E.
Offices Calgary, Alberta, Canada T1Y 5R8
403 250-9600
Geospace Technologies, Eurasia
Kirovogradskaya, 36
Ufa, Baskortostan, Russia 450001
011 (7) 3472 25 39 73
Geospace Technologies, China
Room 700, 7th Floor, Lido Office Tower, Lido Place
Jichang Road, Jiang Tai Road, Beijing, 100004, P.R.China
011 (86) 10 6437 8768
592-05340-01 GeoRes HC-W System Rev A
Geospace Engineering Resources International (GERI), UK
F3 Bramingham Business Park, Enterprise Way, Luton
Bedfordshire LU3 4BU, England
011 44 (0) 7775 688 467
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