Min Max , Average Recording - Chauvin Arnoux C.A 43 FILEDMETER Mode D'emploi

The 50Hz filter for rejection of low frequency fields is suppressed. The C.A 43 becomes sen-
sitive to the power supplies of electric equipment, mains cable runs,...
A first press on
PEAK
- The bargraph indicates the average value of the four highest peak values measured over
100ms.
- The digital display indicates the average value of four measurements on the bargraph. This
corresponds to the average of the 16 peak values measured over 400ms.
A second press on
This function allows you to measure the depth of modulation of the amplitude of an AM signal.
When the frequency modulation is less than 1kHz and of constant amplitude, the ratio Normal
measurement / Peak measurement gives the modulation percentage.
RECORDING MIN, MAX and AVG
The MIN MAX function allows you to record the minimum, maximum and average values of
the measurements. A short press (less than 2 seconds) on
to record mode (the RECORD and
MIN value
As soon as
MIN register. Each time a measurement is less than that contained in the register, it
is transferred to the MIN register and a beep is emitted.
MAX value
Similarly, a measurement higher than the value contained in the MAX register will
cause it to be updated. Each time the contents of the MAX register is modified, a beep
is emitted.
AVERAGE value
Initially, the average value corresponds to the value displayed when
first pressed. Every second the instrument inputs the digital measurement, then it
takes the sum of all the values input since the beginning of the record command and
divides the whole by the number of seconds that have gone by. The result (the average
value) is transferred to the AVG register.*
Thus the contents of the AVG register are updated every second. This average value
can be assimilated to the average dose of fields measured over a given period
(dosemeter function).
The duration of AVG is shown on the clock display as HH MM.
* AVG: abbreviation of AVERAGE
switches On the function and the PEAK symbol appears on the display.
cancels the fast acquisition and the PEAK symbol disappears.
PEAK
P
has been pressed the value displayed is allocated to the
MIN MAX
symbols light up).
57
sets the instrument
MIN MAX
MIN MAX
is