QRam™ Wireless 24-Bit Data Recorder
GroundMetrics has developed a 6-channel data recorder with wireless interface and data transfer for operation with our eQube™ and mCoil™ sensors, as well as commercially available magnetic induction sensors. The productized version will eventually be modified for compatibility with conventional electric field sensors.
Advantages of the QRam are:
- Deployment with multiple disparate sensor systems allowing for survey design flexibility. For example, surveys are not limited to line configurations or fixed spacings.
- Deployment in areas where less cable is advantageous
- Circumstances where minimal gear and portability is desirable
The QRam™ digitizes with 24-bit resolution and offers a variety of advanced performance features.
- 1000 samples per second (SPS) per channel
- Data buffered and streamed to standard or HC SD cards.
- Run time of one month or more without reaching storage capacity
- Old data never overwritten even when the unit’s power is cycled
- Stored data can be cleared in seconds using special command
- Run time of one month or more without reaching storage capacity
- Data acquisition synchronized with GPS time with absolute accuracy of 100 ns.
- GPS timing information included in data stream
- Temperature-compensated crystal oscillator able to maintain timing precision over temperatures from 0° to 70° C
- Periodical temperature and battery readings included in stored data stream
- Capability for a programmed start time
- Separate integrated analog and digital battery power supplies with built-in battery monitor.
- Wireless interface provides real-time monitoring of data streaming. Useful for setup and pre-measurement verification.