Chauvin Arnoux C.A 6541 Notice De Fonctionnement page 50

An object represents a 'box' into which we can place 99 tests. Thus, an object can represent a machine
or an installation upon which a certain number of various measurements (insulation, resistance, continuity)
are carried out.
1. When the button is pressed, the MEM symbol flashes and the small display indicates the first free
OBJ : TEST number, e.g. 02 : 01. The main display indicates FrEE.
The OBJ number is the same as that of the last saved measurement, but the TEST number goes up
in 1's.
It is always possible to modify OBJ : TEST with
If the user happens to select a memory address that is already occupied, then OCC appears on the
main screen.
If a new OBJ is selected, TEST goes back to 01.
2. By pressing MEM once again, the present measurement results will be recorded in the selected
memory address (occupied or otherwise). The MEM symbol stops flashing and remains displayed.
The time and the date of this recording are memorised with the available data (R, V, t).
If a button other than MEM or the selector switch is activated before pressing MEM a second
time, the instrument exits from MEM mode without having saved the results.
3. If a time-controlled test has been carried out, interval values (samples) are available (see § 4.3). They
are automatically saved under the same OBJ : TEST number as the final measurement.
I I I I I Estimation of the memory capacity:
Total memory space :
Data management :
Free memory space :
An insulation measurement result takes up approximately 80 bytes.
For a "time-controlled test" , a sample takes up 10 more bytes.
A resistance or continuity measurement takes up 26 bytes.
It is therefore possible to record about 1500 insulation measurements or about 4000 resistance or
continuity tests.
I I I I I Free memory space
This function is automatically activated when a result is saved.
Press MEM once in order to get the following free OBJ. TEST number; the bar graph indication is in
proportion to the available free memory space.
- If the entire memory is free, all of the bar graph segments show up.
- If the entire memory is full, the left arrow to the left of the bar graph flashes.
- As soon as the saving is over with, the bar graph disappears.
Each segment of the bar graph equates to approximately 50 recordings.
6.2.2 Second function MR
With the MR function it is possible to recall any saved data from the memory, no matter the position of
the rotary selector switch.
I When the button is pressed, the MR symbol is displayed (without flashing).
The small display indicates the last OBJ : TEST number to be assigned, e.g. 02 :11.
02 "11" flashes opposite the TEST symbol, the usual modification procedure using the
buttons should be used to select the desired OBJ : TEST number.
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