Analogue Output - Chauvin Arnoux C.A 41 Notice De Fonctionnement

4.7. ANALOGUE OUTPUT

The analogue output makes it possible to record data on a plotter, graphic recorder ... with a minimum
impedance of 100kΩ.
An analogue amplifier adapts the voltage output from the sensor to obtain a proportional DC signal in
accordance with a pseudo-quadratic law law.
The output connector allows connection to screened cable in order to maximize the elimination of
interference effects on the measurement field.
The output is specified up to 1.5V; the graph below defines the transfer function of this output up to 3V.
- For normal and SMOOTH measurement, the filteing constant is 400 ms.
- On PEAK measurement, the filtering constant is much more reduced: 1 ms. This allows the display of
amplitude modulation signals superimposed on the HF signal (see example bellow).
Example: display on oscilloscope of GSM modulation signals.
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