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(Seismograph ECHO 96 Seismic Unit) parameters and specifications
Parameter Specification
Number of channelsUp to 96+1 with differential input
AD conversion24 bits
Dynamic range130 dB @ 1ms PG = 0 dB
120 dB @ 1ms PG = 18 dB
Cross talk> 90 dB
Preamplify gain0, 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, 66, 72 dB
Bandwidth0.5 to 400 Hz
Acquisition and display filterLow Cut Out
Sampling Interval10 - 15 - 25 - 35 - 50 - 100 - 250 - 500 - 1000 - 2000 - 4000 Hz
Sampling period (µs)303 - 606 - 909 - 1212 - 1515 - 1820 µs
Record Length16000 samples
Stacking trigger accuracy1/32 of sample interval
Distorsion (THD)0.0001%
Max Input signal5 Vpp, 0 dB
CMR110 dB (FCM = 60 Hz fDATA = 30 kSPS)
Noise0.25 µV, 2ms 36 dB
Pre-trigger data52 ms @ 32 µs sample interval
Delay0 to 15 sec @ 1kSPS (max 16000 samples)
Temperature range-30°C to +70°C
Power12 V (ult)
Continuous recordingSupported
Output formatSEGY / SEG2 / SAF (SESAME ASCII FORMAT)