Adaptable: can be used for recording real-time or autonomous data (U-Node can be used with cables, Wi-Fi, and in autonomous mode).

Versatile: can be used with any sensors and in all field conditions.

Compatible: can work with any source type (Vibroseis, Dynamite, Weight Drop, etc.) or mode of acquisition (UHPV, Flip-Flop, full autonomous, etc.)

Flexible: can be used with crews large, small, or to supplement conventional cabled crews.

One U-Node can record data from up to 60 Sercel FDU nodes or up to 20 Sercel DSU nodes

U-Node crews can record either active or passive datasets

A crew can utilize a single U-Node for small projects or multiple boxes for large projects

U-Node boxes can be networked to a computer for continuous data streaming

U-Node boxes can be deployed for autonomously recording continuous data

U-Node systems employ wireless time-break recorders to capture record start times

All U-Node acquisition systems are compatible with all Seismic Source control electronics

♦ Universal Encoder 3 for operation of any source on any project

♦ Force 3 Vibrator decoder/controller for Vibroseis acquisition

♦ Boom Box 3 decoders for acquisition with downhole or surface explosives

♦ Remote Trigger Box 3 for acquisition with mechanical impulsive sources

♦ VibLink IP and VibLink TDMA for high-speed crew communications from any location

Receiver Spread Management

Configure U-Node units

Assign receiver geometry

QC and troubleshoot receiver spread

Collect data from U-Node units

Display and Archive data files

Source Operation Management

Configure source

Assign source point

Fire source

QC source performance

U-Node Specifications

Sample Rate

2000, 1000, 500 & 250 sps

Internal Storage

128 GB standard

Network (cabled and Wi-Fi)

100base-T

Battery

10-30 volts hot-swappable

U-Node Requirement

144 mA @ 13.75 volts

Weight (Metric)

2.3 kilograms

Weight (Imperial)

5.1 pounds

Size (Metric)

206 x 155 x 132 mm

Size (Imperial)

8.1 x 6.1 x 2.5 inches

FDU Specifications

@ G400

@G1600

Diff mode impedance

20kOhms

same

Full scale input

1.6 V RMS

400 mV RMS

Crosstalk

> 130 dB

same

Noise

450 nV RMS

145 nV RMS

Instant dynamic range

130 dB

same

System dynamic range

140 dB

same

Distortion

-110 dB

same

Gain accuracy

< 0.1%

same

Phase accuracy

20 uSec

same

CMRR

110 dB

same

Power consumption

120 mW @ 8 Mbps, 132 mW @ 16 Mbps

DSU Specifications

Function

Acceleration Measurement

Full scale

5 m/s²

Tile max value

± 180 deg

Noise (10-200 Hz)

0.4 μm/s²/√Hz

System dynamic range

129 dB @ 4 ms

Bandwidth

0-800 Hz (up to 1,600 Hz with degraded specs)

Distortion

-90 dB

Amplitude cal accuracy

±0.25%

Orthogonality cal accuracy

±0.25%

Power consumption

285 mW @ 8 Mbps, 300 mW @ 16 Mbps