The DAQlink III is the third generation of portable seismograph systems. The system can be configured as a stand-alone monitoring system, a refraction system or a distributed seismic reflection system.

The DAQlink III has been designed for temporary or long term installations and can be monitored continuously or periodically, locally or remotely. External clock discipline via GPS Module, VHF/UHF radios or Wire enables usage in any environment.

A/D

24 bit sigma delta converter

Anti-Alias Filters

85% of Nyquist frequency

Low Cut Filter

User Selectable – DC, 0.1 Hz, 2 Hz

Filter Type

Linear Phase

Sample Rates

1/48, 1/16, 1/8, 1/4, 1/2, 1, 2, 4, 8, 16 ms

PreAmp Gain

x2 (6 dB) & x32 (30 dB) standard
x1 (0 dB) & x16 (24 dB) optional

Max Input at x2 (Standard)

3.58 Volts P-P x2 (Standard)
7.16 Volts P-P x1 (Optional)

Bandwidth

DC to 15 kHz

Power

Less than 0.4 watts per channel

Input Impedance

100k Ohms

Clock Sync

GPS

# Channels

6, 12 or 24

Temperature

-40°C to +85°C

Humidity

0 to 100%

Size

13.0" x 9.0" x 2.4" (330 x 230 x 60 mm)

Weight

7.5 lbs (3.4 kg)

Data Storage (Internal 16GB CF)

120 hours (24 channels @ 2ms)

Data Storage (through Ethernet)

Unlimited

Data Format

32-bit float IEEE SEG-Y/SEG-D

LEDs

Network Connect, Network Data Status and Battery

Trigger Accuracy

± 1 µs at all sample rates

Dynamic Range

Better than 118 dB (at 2 ms)

THD

0.0012 %

Crosstalk

Better than -125 dB

Common Mode Rejection

Better than 100 dB

Noise Floor

< 0.2 µV RMS @ 2ms

RJ-45

Standard CAT-5 Ethernet

GPS

4-pin Weatherproof

Trigger

3-pin Weatherproof

Power

2-pin Weatherproof

Auxiliary Port

19-pin Weatherproof

Seismic Data

55-pin Weatherproof