E.4 calibration – Campbell Scientific CS110 Electric Field Meter User Manual
Page 68

Appendix E. CS110 as a Slow Antenna
E-6
E.4 Calibration
The factory calibration described in Section 5 applies to the maximum
amplitude of the step response of the CS110 when it is operating as a slow
antenna. Switching in the 200 M
Ω resistor in the feedback path simply slows
the decay of the signal induced on the sense electrode resulting in a 66
millisecond decay time constant
The CS110 operating as a slow antenna returns the change in the electric field
with units of volts per meter per scan. A 50 Hz scan interval would yield:
X volts * meter
-1
* 20 ms
-1
.
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