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Summit II PLUS writing

Technical / Environmental Specifications for Summit RUs and CUs

Each Summit Remote Unit and Summit Compact Unit includes its own processor. Thus all mathematical operations like stacking and correlation are done in the Units. The preprocessed data are transmitted to the Central Unit (PC) afterwards. This procedure saves computing time on the PC as well as transmission time.

Technical Specifications:

 

Sample Interval

1/48, 1/32, 1/16, 1/8, 1/4, 1/2, 1, 2, 4, 8 ms

Record Length

0.5 K, 1.0 K, 1.5 K, ...,

..., 120 K in dynamite mode

..., 40 K in dynamite mode incl. stacking

..., 60 K in vibro mode

..., 30 K in vibro mode incl. stacking

Preamp Gain

0 dB, 20 dB or 40 dB

A/D Converter

24 bit Delta Sigma Technology

Maximum Input Signal

2.0 Volt RMS

5.6 Volt peak to peak

Input Impedance

20 kOhm

Instantaneous Dynamic Range

≥ 120 dB @ 2 ms Sampling Interval

Equivalent Input Noise

CU: less than 0.3 V RMS @ 2 ms Sampling Interval and 40 dB Preamp Gain

 

RU: less than 0.2 V RMS @ 2 ms Sampling Interval and 40 dB Preamp Gain

Crosstalk

≥ 112 dB (between channels)

Total Harmonic Distortion

≥ 0.0008 %

Common Mode Rejection Ratio

≥ 100 dB

Gain Accuracy

typical 1 % (between all channels)

Time Accuracy

typical 5 ppm (between all channels)

Analog Anti-Alias Filter

7.2 kHz; 6 dB/Octave

Analog Low-Cut Filter

1 Hz; 6 dB/Octave

Digital Anti-Alias Filter

19.2 kHz @ 1/48 ms Sampling Interval

12.8 kHz @ 1/32 ms Sampling Interval

6.4 kHz @ 1/16 ms Sampling Interval

3.2 kHz @ 1/8 ms Sampling Interval

1.6 kHz @ 1/4 ms Sampling Interval

800 Hz @ 1/2 ms Sampling Interval

400 Hz @ 1 ms Sampling Interval

200 Hz @ 2 ms Sampling Interval

100 Hz @ 4 ms Sampling Interval

50 Hz @ 8 ms Sampling Interval

Rejection at Nyquist Frequencies

-120 dB

Passband Ripple

+/- 0.05 dB

Build-In-Test Functions

- Sine Wave

- Pulse

- Instrument Noise

- Geophone Step

- Sweep Transfer

- Autocorrelation

System Check

- Battery Status

- Equivalent Input Noise

- Total Harmonic Distorsion

- Instantaneous Dynamic Range

- Common Mode Rejection

- Cross Talk

- Time Accuracy

Geophone Check

- Impedance

- Damping

- Natural Frequency

- Noise

 

Environmental Specifications:

 

Operation Temperature -30C to + 80C
Humidity Range 0 - 95%
Case Solid waterproof housing deployable in any surface environment     
  HarbourDom GmbH 2012             impressum