GDP-32II INSTRUCTION MANUAL
May 2002 Section 2, Page 4
ELECTRICAL SPECIFICATIONS
General
Description: Broadband, Multi-channel digital Electromagnetic receiver
Frequency Range: DC to 8 kHz
Numbers of Channels: 16 (maximum)
Survey Capabilities: Resistivity, IP (time and frequency domain), FEM, MMR,
CR, CSAMT, HACSAMT, TEM, NanoTEM, AMT, MT
Software Language: C and assembly
Power: 12V rechargeable batteries
Temperature Range: -40° to 60° C (-40° to 140° F)
Humidity Range: 0 to 90%
Time Base: Crystal clock with 5x10
-10
per 24 hours aging rate
Analog Section
Input Impedance: 10 MΩ at DC
Dynamic range: 190 dB
Min detectable signal: ±0.03 µV
Max input voltage: ±32V
SP offset adjustment: ±2.25V in 69 µv steps (automatic)
Automatic gain setting: manual override, in binary steps from 1/8 to 2
16
.
Signal Attenuator: Selectable 8:1
Calibration signal generation: Internal/external
Duty cycle selection: 50%, 100%
Filter Section
All filters are software controlled
Anti-alias filter, four-pole Bessel
Quad-notch filter: 50/150, 60/180 Hz; 50/150/250/450 Hz,
60/180/300/540 Hz, or other user specified ranges
Digital telluric filter
Analog to Digital Converter (Standard Analog Channel)
Resolution: 16 bits ±1/2 LSB
Conversion Time: 17 µ sec
Digitization Rate: 32 kHz maximum, per channel
One A/D per channel for maximum speed and phase accuracy
To Next Page
Loading...
