Zonge Electromagnetic Network
The new Zonge Electromagnetic Network (ZEN™) receiver is a high-resolution, multi-channel receiver for acquisition of controlled- and natural-source geo-electric and EM data.
Key Benefits
- Uses 32-bit analog-digital converters designed specifically for geophysical applications
- Signals not detected with conventional 16- or 24-bit receivers are easily detected with ZEN’s 32-bit resolution
- Reliable even in areas with cultural noise
Distributed Acquisition, Wireless Arrays
- True distributed acquisition system
- Survey setup is easier — analog signals can be measured based on terrain and access
- Flexibility for real-world field conditions
Applications
- Resistivity, Time/Frequency Domain IP, CR
- CSAMT, Harmonic Analysis CSAMT (HACSAMT), AMT, MT
- DC to 1024 Hz
- Controlled Source/IP: 1/64 to 1024 Hz
- Use as analog or borehole data logger
Lightweight & Field Ready
- Designed for high performance and lower deployment cost in MT data collection
- Collects highest resolution data currently possible
- Weighs less than 6 pounds (2.6 kg)
- Portable for small crews on large-scale surveys
Integrated System
- Rugged, portable, environmentally sealed
- Modular design for easy upgrades
- Fully compatible with Zonge transmitters and ancillary gear
- Native GPS synchronization with transmitter
- ZigBee® Radio Control
- Broadband time-series recording
- 60 MHz ARM CPU
- 1 to 6 channels, user expandable
- One 32-bit ADC per channel
- Auto gain setting and internal calibration
- Storage: 8 GB per channel — holds several days of data
- USB data transfer
Specifications
General
- Broadband, multi-channel, multi-function digital receiver
- Frequency range: DC – 1024 Hz
- Channels: 1 to 6 (user expandable)
- Survey capabilities: Resistivity, Frequency-/Time-Domain IP, Complex Resistivity, CSAMT, Harmonic Analysis (CSAMT), Frequency-Domain EM, MMR, Magnetic IP, Magnetotellurics, Downhole Logging
- Software language: C++
- Size: 27 × 24 × 13 cm (10.5 × 9.5 × 6”)
- Weight (6 channels): 3 kg (6 lb 9 oz)
- Enclosure: Heavy-duty, environmentally sealed aluminum
- Power: 7–36V rechargeable batteries (external pack)
- Power consumption: 0.7 Ah
- Operating temperature: -40°C to +50°C
- Humidity: 5% to 100%
- Internal temperature sensors
- Time base: GPS Synchronization
Displays & Controls
- Power On-Off
- Color-coded LEDs
- ZigBee® or USB control from external computer
Standard Analog Specs
- Input impedance: >10 MΩ at DC
- Dynamic range: 180 dB
- Minimum detectable signal: 20 ηV
- Max input voltage: ±2.5V
- Auto gain ranging (1 to 64, binary steps)
- Common-mode rejection @1000 Hz: >100 dB
- Phase accuracy: ±0.1 milliradians (0.006°)
- Adjacent channel isolation @100 Hz: >90 dB
- ADC resolution: 32 bits
- Conversion time: 0.25 ms
- One A/D per channel
- Analog connection: Pomona or 16-pin waterproof Mil-Spec connector
Digital Section
- Microprocessor: 60 MHz ARM per channel
- Mass Storage: 8 GB per channel (up to 16 GB/channel optional)
- Serial: USB to each channel
- Distributed control: Long-range mesh network (2.4 GHz, unlicensed)
Acquisition Software
- MT, CR, RDIP GUI for Windows
- External Control: Serial string interface for custom dev
- Real-time programmable via BASIC script downloads