a). GDD Instrumentation

RX –Receptor –IP –16 Channels L Receiver and IP –TX II 5000W –2400V, 15A Transmitter


·         Number of Channels: 8, 16, 24 or 32

·         Survey Capabilities: Resistivity and Time Domain IP

·         Twenty Chargeability Windows: Arithmetic, Logarithmic, Semi-logarithmic, Cole-cole, IPR-12 and user defined

·         Synchronization: Automatic and re-synchronization process on primary voltage signals

·         Noise Reduction: Automatic stacking number

·         Computation: Apparent resistivity, chargeability, standard deviation, and % of symmetrical VP

·         Serial Ports: RS-232 port and Bluetooth to communicate with a PDA

·         Allegro CX Mobile PDA: Standard Juniper Mobile PDA computer provided with the GDD receiver with all accessories

·         PDA Temperature Range: -20˚C to +50˚C (-4˚F to +122˚F), Bluetooth the PDA operator and reading modules system

·         System: GDD 3600W or 5000W IP TxII-5000W the power and voltage

·         Output Voltage Range: 150V to 2400V / 14 Steps

·         Power Source: Standard 220V/240V, 50-60Hz