Seismic Data Channels

4

ADC Resolution

24 bits

Sample Interval

0.5, 1, 2, 4 milliseconds

Preamplifier Gain

0 dB to 36 dB in 6 dB steps

Anti-Alias Filter

206.5 Hz (82.6% of Nyquist) @ 2 ms, Linear Phase or Minimum Phase

DC Blocking Filter

1 Hz to 60 Hz, 6 dB/Octave, or OUT

Operating Temperature Range

-10˚C to +60˚C

Operating Life (100% Charge)

30 days @ 2 ms sample interval

Battery

Charging Temperature Range
+7.5˚C to +40˚C

Recharge Time
< 8 hours

Acquisition Channel

(2 ms sample interval, 25°C, 31.25 Hz, internal test, unless otherwise indicated)

Total Harmonic Distortion
0.0002% @ 12 dB gain, -3 dB Full Scale

Equivalent Input Noise
0.8 µVrms @ 0 dB
0.2 µVrms @ 12 dB
0.1 µVrms @ 24 dB
0.1 µVrms @ 36 dB

Full Scale Input Signal
2500 mV peak @ 0 dB
625 mV peak @ 12 dB
156 mV peak @ 24 dB
39 mV peak @ 36 dB

Gain Accuracy
0.50%*

Dynamic Range
127 dB @ 0 dB Preamplifier Gain

Crossfeed
<-100 dB Geophone Channels
<-80 dB Hydrophone Channel**

Common Mode Rejection Ratio
>+90 dB Geophone Channels
>+40 dB Hydrophone Channel**

DC Offset
<10% of Input Noise with DC Blocking Filter IN

Timing Accuracy
CSAC clock 

Self Test Features

Internal Noise (preamp input terminated)
Internal THD
Internal Gain Accuracy
Internal CMRR
Internal Crossfeed
Internal Impulse
Sensor Impedance
Sensor Impulse

Sensors

Geophone
3 orthogonal, omni directional, 15 Hz @ -3 dB, 70% damped 0.57 V/in/s (22.4 V/m/s)

Hydrophone
3.4 Hz @ -3 dB, 8.9 V/Bar

Orientation
± 1.5° tilt indication
± 5° azimuth (at Latitudes within ± 50° of the Equator)

Physical

Weight
26 lb (11.8 kg) in air, 12.3 lb (5.6 kg) in water

Dimensions
12 in (30.48 cm) diameter by 4 in (10.16 cm) high

Operating Depth
300 meters

 * Does not include high-impedance low-cut filter for directly coupled hydrophone interface

** Channel includes high-impedance low-cut filter for directly coupled hydrophone interface


All specifications relate to Node Part Number 221.8072.0001 only.
FairfieldNodal reserves the right to change specifications without notice to provide the best possible product.
Drawing Number 601.0015.0001 Rev. – Z100 Node

August 2016

Click here to download a PDF of the Z100 specs.

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