Geometrics.com

ES-3000 Specifications

Configurations: 8 or 12 channels in weatherproof field-deployable seismodule. Seismodule ES-3000 is operated from WindowsTM 98/NT4/ME/ 2000/XP based laptop1. System includes ES-3000 OESperating Software (ESOS) with optional softwarethe option for blast or vibration measurements and earthquake monitoring.

System Software: Basic operating software (ESOS) includes full complement of acquisition, filtering, display, and storage features. Other options available for blast and vibration measurements and earthquake monitoring

A/D Conversion: 24-bit result using Crystal Semiconductor sigma-delta converters and Geometrics proprietary over-sampling.

Auxiliary Channels: All channels may be programmed as either AUX or DATA.

Dynamic Range: 144 dB (system); 110 dB (instantaneous, measured) at 2 ms, 24 dB.

Line Testing: Real-time noise monitor displays current output from geophones.

Distortion: 0.0005% @ 2 ms, 1.75 to 208 Hz.

Data Format: SEG-2 standard.

Bandwidth: 1.75 Hz to 8 kHz. - 0.6 and DC low frequency options available.

Data Storage: Stores data in SEG-2 format on laptop PC media

Common Mode Rejection: >100dB at ≤ 100 Hz, 36 dB.

Plotters: Laptop software drives WindowsTM-compatible printers.

Crosstalk: -125 dB at 23.5 Hz, 24 dB, 2 ms.

Triggering: Positive, negative, or contact closure, software adjustable threshold

Noise Floor: 0.20 uV, RFI at 2 ms, 36 dB, 1.75 to 208 Hz.

Power: Requires 12V external battery.

Stacking Trigger Accuracy: 1/32 of selected sample interval.

Environmental: -30 to 70 degrees C. Waterproof and submersible

Maximum Input Signal: 177 mV2.8V P-P, 24 dB.

Operating System: WindowsTM 98/NT4/ME/2000/XP.

Preamplifier Gains: 24 or 36 dB, software-selectable

Input Impedance: 20 kOhm, 0.02 uf.

Anti-alias Filters: down 3 dB at 83% of Nyquist frequency; down 90 dB ≥ Nyquist frequency.

Physical: 10" × 12" × 7" high (25.4 cm x 30.5 cm x 17.75 cm high). Weighs 8 lb (3.6 kg). Single waterproof Bendix 61-pin connector for geophone input

Acquisition and Display (Butterworth) Filters:

Low Cut: OUT, 10, 15, 25, 35, 50, 70, 100, 140, 200, 280, 400 280, 400 Hz, 24 or 48 dB/octave.
Notch: OUT, 50, 60, 150, 180 Hz, with the 50 dB rejection bandwidth 2% of center frequency.
High Cut: OUT, 32, 64, 125, 250, 500, 1000 Hz, 24 or 48 dB/octave.
Display filter values are user-selectable with 24 or 48 dB/octave slopes.

Bundled Applications Software:

* SIPQC refraction analysis software (delay time method) from Rimrock Geophysics. Operates when your laptop is connected to the ES-3000

* SeisImager/2D Lite refraction modeling and analysis software (time-term least squares, delay time, and tomographic inversion methods) from OYO. Operates when your laptop is connected to the ES-3000

* SIPQC and SeisImager/2D Lite are configured for in-field analysis and require connection to ES-3000 seismodule, and a mouse for SeisImager/2D Lite, to operate. Standalone versions available; please contact the factory with your requirements

* Sample Interval: 0.0625, 0.125, 0.25, 0.5, 1.0, 2.0 ms.
Data Transmission: Uses Ethernet data transmission standard over CAT5 copper wire.

* Record Length: 4,096 samples.
Pre-trigger Data: Up to full record length.

* Trigger Delay: 0 to 9,999 ms in 1 sample interval steps.

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