Actual electrode voltage depends on transmitted current and ground resistivity. Input gain ranging Automatic, always uses full dynamic range of receiver. Max 500 V SP compensation Automatic cancellation of SP voltages during resistivity measurement. Constant and linearly varying SP cancels completely. Running average of measurement displayed after each cycle.
Automatic cycle stops when reading errors fall below user set limit or user set max cycles are done.
Cycle time Basic measure time is 1.2, 3.6, 7.2 or 14.4 s as selected by user via keyboard. Autoranging and commutation adds about 1.4 s Signal processing Continuous averaging after each complete cycle. Noise errors calculated and displayed as percentage of reading. Resistivity is calculated using user entered electrode distances. Field measurement accuracy depends on ground noise and resistivity.