RSR Remote Seismic Recorder

• 6-channel, 24-bit, A/D

• Seismic data return (QC only)

• Robust radio telemetry

• Post-shot QC attribute return

• 512-MB flash memory

• Full instrument and sensor test

• Vertical/Diversity stack capability

• DynaconTM, amphibious connector (optional)

• Compatible with the I/O IMAGETM System Central Electronics and the I/O OCR System Controller

• Instrument’s performance, response, and testing identical to the MRXTM unit

Successful seismic operations require high-equipment utilization, high-productivity recording, and high-quality data.

The RSR telemetry is inherently more produtive because spread control is achieved through intrinsi-cally-parallel RF communication. For very large surveys or where RF shadow zones are experienced,one to four RSR Repeaters overcome potential radio-reliability concerns. RSR data quality is assuredthrough extensive self-checking and periodic status-monitoring. The increased efficiency and reliabilityis made possible by use of privacy codes, sophisticated encoding techniques, and high-sensitivityradio/transceiver design.

The RSR system is uniquely suited for work in the most-difficult operations: in RF-congested areas,in environmentally-sensitive wetlands, and in urban areas where recording spread flexibility is required.The RSR system has been used successfully in all types of operations and with all types of sources.

RSR-2 RSR-3

© 1999. Input/Output, Inc. All rights reserved. Information subject to change without notice. Revised 06/01. 121001D1 of 4

System Highlights

Specifications

INPUT/OUTPUT, INC.

© 1999. Input/Output, Inc. All rights reserved. Information subject to change without notice. Revised 06/01. 121001D2 of 4

Telemetry RF communication link

Seismic Channel Capacity Virtually unlimited

Transmit Frequency 216.02 MHz to 219.98 MHz 216 MHz to 230 MHz available for sales outside of U.S.A. & Canada

(tuned for 216 MHz – 224 MHz or 222 MHz – 230 MHz)1-W output power 20-kHz channel spacing

Calibration Automatic gain calibrationAutomatic DC-offset removal

Shot Status Shot countShot identificationMemory-remainingBattery statusPre-amplifier overdrivesReceive signal strength

Look Ahead Test On-line, full-specification performanceTest of entire channel capacity

Test Capability System dynamic rangeEquivalent input noiseGroup impedanceCommon-mode rejectionCrossfeedDistortionAttenuator step accuracyPulse testHPE-performance testSigna-dependent noise evaluationSpread noise evaluationGeophone performance testAll tests are remotely-selectable and analyzed in the field. Automatic and resident daily, weekly,

monthly, and Look Ahead tests may be selected.

Test Oscillator 79 sine-wave frequencies (7.8 Hz – 960 Hz)Wide spectrum-summed, sine-wave pattern13 pulse patterns (5 widths and 2 types)173 DC levelsAll oscillator signals may be attenuated by a quaternary 11-step attenuator and can be applied

as difference mode or common mode.

A/D Converter 24-bit (23 + sign)

Channels per RSR 6

Pre-amplifier K-Gain 12 dB, 24 dB, 36 dB, or 48 dB

Sample Interval ½ ms, 1 ms, 2 ms, or 4 ms

Channel Capacity Virtually unlimited

Specifications (cont.) INPUT/OUTPUT, INC.

© 1999. Input/Output, Inc. All rights reserved. Information subject to change without notice. Revised 06/01. 121001D3 of 4

Line Capacity 65,536

Dynamic RangeNon-shorted input 8.7 Hz – 135 Hz; 650-Ω source; 2-ms sample intervalInstantaneous DR 120.0 dB @ 12-dB K-gain

119.3 dB @ 24-dB K-gain115.0 dB @ 36-dB K-gain104.1 dB @ 48-dB K-gain

Total dynamic range 140.2 dB

Equivalent Input NoiseNon-shorted input 8.7 Hz – 135 Hz; 650-Ω source; 2-ms sample interval

1.408 µVRMS @ 12-dB K-gain0.381 µVRMS @ 24-dB K-gain0.157 µVRMS @ 36-dB K-gain0.137 µVRMS @ 48-dB K-gain

Maximum Input Signal 1408 mVRMS @ 12-dB K-gain352 mVRMS @ 24-dB K-gain88 mVRMS @ 36-dB K-gain22 mVRMS @ 48-dB K-gain3982 mVPP @ 12-dB K-gain996 mVPP @ 24-dB K-gain249 mVPP @ 36-dB K-gain62 mVPP @ 48-dB K-gain

Distortion 0.0005% THD

Channel Gain Matching 0.1%

Common-mode Rejection 100 dB or greater

Crossfeed Isolation 110 dB or greater

Frequency Response 3 Hz – 750 Hz

Time Standard 2 ppm

Input ImpedanceDifferential mode 20 kΩ in parallel with 0.1 µFCommon mode 250 kΩ @ 50 Hz – 60 Hz

RSR Filters All filters are resident and remotely-selectable including:Digital anti-alias filters Linear or minimum phase response

540 Hz or 750 Hz @ ½ ms 270 Hz or 400 Hz @ 1 ms135 Hz or 200 Hz @ 2 ms68 Hz or 100 Hz @ 4 msRejection above Nyquist frequency = –130 dBPassband ripple = ±0.1 dB

Digital low-cut filtersON or OFF, as desired 32 frequencies (3 Hz – 90 Hz)

Slope = 12 dB/octaveDigital hi-line pickup eliminator (HPE)

ON or OFF, as desired Simultaneous cancellation of 3 selectable frequenciesFixed frequencies Selectable; 3 Hz to 420 Hz (0.01-Hz increments)Rejection 80 dB or greater

Specifications (cont.) INPUT/OUTPUT, INC.

United States – Stafford, TXInput/Output, Inc.Fax: 281.879.3500Phone: 281.933.3339E-mail: info@i-o.com

RussiaInput/Output, Inc.Fax: 7.095.2322240Phone: 7.095.2322254

EnglandInput/Output, Inc.Fax: 44.1603.411403Phone: 44.1603.411400

Web Sitewww.i-o.com

© 1999. Input/Output, Inc. All rights reserved. Information subject to change without notice. Revised 06/01. 121001D4 of 4

RSR Unit (P/N 139000)Dimensions 24.4 cm x 24.4 cm x 20 cm (9.6 in x 9.6 in x 7.9 in)Weight 6.8 kg (15 lb)Temperature –50°C to +75°C Humidity 0% to 100%Altitude Up to 5,500 mPower 12-V battery (optional solar)

DCU (P/N 139500)Dimensions 39.1 cm x 18.3 cm x 27.4 cm (15.4 in x 7.2 in x 10.8 in)Weight 10 kg (22 lb)Temperature +5°C to +45°C Humidity 0% to 100%Altitude Up to 5,500 mPower 12-V battery (optional solar)

RSR Repeater & Duplexer (P/N 151001)RSR Repeater

Dimensions 24.3 cm x 24.3 cm x 19 cm (9.6 in x 9.6 in x 7.5 in)Weight 5.9 kg (13 lb)Temperature –50°C to +75°C Humidity 0% to 100%Altitude Up to 5,500 mPower 12-V battery (optional solar)

RSR DuplexerDimensions 38.8 cm x 58.4 cm x 63.6 cm (15.25 in x 23 in x 25 in)Weight 25.9 kg (57 lb)Temperature –50°C to +75°C Humidity 0% to 100%Altitude Up to 5,500 m

Remote Test Station (RTS; P/N 142000) Retrieves RSR status Performs following tests on RSR:

Dynamic range determination RMS noise Frequency response Common-mode rejection Harmonic distortion HPE performance Crossfeed box and group Signal-dependent noise evaluation

Related Products I/O IMAGETM System Central Electronics; MRXTM Miniature Remote Signal Condition-er; OCR System Controller; 12-V batteries & chargers