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CMG-DM24 3- to 12- channel broadband digitizer |
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Προδιαγραφές | |
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Τεχνικά Χαρακτηριστικά | |
Signal channels | 3, 6, 9, 12 @ 24 bits |
Auxiliary/ calibration channels | 1, 1, 2, 2 @ 24 bits |
Input voltage range (surface) | ±10 V (±20 V optional) differential |
Input impedance (surface) | 1MQ /10 nF |
Inputs (borehole and integrated) | matched to sensor |
Environmental channels | 8 @ 4 samples/s, 16-bit resolution |
Environmental channel range | ±10 V single-ended |
ADC converter type | 5th-order single-bit low pass AX |
Output format | 24-bit (32-bit low-noise option) |
Dynamic range | 137dB (141dB) @ 40 samples/s |
Absolute accuracy | 0.5% (0.1%) |
Common-mode rejection | 120 dB@ 10 Hz |
DSP sampling rate | 32 kHz |
Output rates available | 1000 .. 1 samples/s |
Highest output capability | 3 channel: 3 x 1000 + 1 x 500 6 channel: 3 x 1000 + 4 x 500 |
Decimation filters | 2, 4, 5, 2x4, 2x5 |
Anti-alias filters | 3-pole |
Low pass filters | FIR (other options available) |
Out-of-band rejection | 140 dB |
In-band ripple | -140 dB |
DSP trigger modes | STA/LTA, level, external, software |
Timing source precision | 8 E-07 |
Optional precision RTC | 1.7 E-08 (30 mW power cost) |
Calibration signal generator | Amplitude/frequency adjustable sine wave, step or broadband noise |
Flash storage |
64Mb (options to 8 Gb) |
Sensor control commands | Remote lock, unlock, centre |
Optional smart sensor interface | SSI l²C/l-wire interface |
Operating temperature | -40 to +60 °C |
Power supply | 12 36 V DC |
Current at 12 V DC |
3 channel: 77 mA = 0.92 W 6 channel: 120 mA - 1.44 W GPS: 35 mA - 0.42 W |