ZLand® 1C Node Specifications

Seismic Data Channels

1

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 @ 2ms (82.6% of Nyquist), Selectable - Linear Phase or Minimum Phase

DC Blocking Filter

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

Operating Temperature Range

-40˚C to +60˚C

Operating Life

40 days (960 hours) Continuous @ 2ms, 25° C
70 days Segmented (12 hours ON/12 hours SLEEP), 25° C

Acquisition Channel

(@ 2ms 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
0.75 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

Common Mode Rejection Ratio
>110 dB

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

Timing Accuracy
±10 μseconds GPS Disciplined

Instrument Tests

Internal Noise (preamp input terminated)
Internal THD
Internal Gain Accuracy
Internal CMRR
Internal Impulse
Sensor Impedance
Sensor Step Response
Sensor DC Resistance

Sensor

Internal Geophone, Single, Vertical
10 Hz, 70% damped, 2 V/i/s (78.7 V/m/s)
5 Hz - 70% damped, 1.95 V/i/s (76.7 V/m/s)
External input via optional pigtail

Battery

Type
Rechargeable Li-Ion

Charging Temperature Range
+5˚C to +40˚C

Recharge Time
<3 hours 

Physical

Weight
4.0 lb (1.8 kg), including spike

Dimensions
4.6 in (11.7 cm) diameter by 5.7 in (14.5 cm) high

Detachable Spike
4.6 in (11.7 cm) long, detachable

Click here to download a PDF of the ZLand 1C specs.

ZLand® 3C Node Specifications

Seismic Data Channels

3

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 @ 2ms (82.6% of Nyquist), Selectable - Linear Phase or Minimum Phase

DC Blocking Filter

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

Operating Temperature Range

-40˚C to +60˚C

Operating Life

35 days Continuous (@ 2 ms, 25° C)
60 days Segmented (12 hours ON/12 hours sleep @ 2 ms, 25° C)

Acquisition Channel

(@ 2ms 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
0.75 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

Common Mode Rejection Ratio
>110 dB

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

Timing Accuracy
±10 μseconds GPS Disciplined

Instrument Tests

Internal Noise (preamp input terminated)
Internal THD
Internal Gain Accuracy
Internal CMRR
Internal Impulse
Sensor Impedance
Sensor Step Response
Sensor DC Resistance

Sensor

3 Geophones, Orthogonal Configuration
10 Hz – 70% damped, 2 V/i/s (78.7 V/m/s)
5 Hz – 70% damped, 1.95 V/i/s (76.7 V/m/s)

Battery

Type
Rechargeable Li-Ion

Charging Temperature Range
+5˚C to +40˚C

Recharge Time
<4 hours

Physical

Weight
6.2 lb (2.8 kg), including spike

Dimensions
4.6 in (11.7 cm) diameter by 6.4 in (16.3 cm) high

Detachable Spike
4.6 in (11.7 cm) long, detachable

Click here to download a PDF of the ZLand 3C specs.

FairfieldNodal reserves the right to change specifications without notice to provide the best possible product.

August 2016


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