Utilizes World’s most popular land seismic spread cables. Over 5,000,000 channels of FDU and DSU have been sold. Either one can be connected to U-Node boxes.

Extremely versatile, can be used with any sensor type and can be used in all survey conditions (artic, desert, marsh, etc.)

Each U-Node Alpha records up to 60 channels, and multiple U-Nodes can be de-ployed to record more channels.

The U-Node Alpha provides hot swap and smart battery discharge functionalities in order to facilitate the battery replacement during a survey.

LEDs on the case show the status of the equipment at all times.

Full software suite included with each system sold. Software provides support for autonomous or real time operation.

System compatible with Seismic Source's Universal Encoder/SourceLink system for control and operation of all land sources (Vibroseis, Dynamite, Weight Drop, etc.)

One U-Node A can record 60 channels

One U-Node A 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 operated in either managed (triggered) or autonomous (continuous recording) mode

U-Node boxes can be triggered by direct connection or by radio link

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 A 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