Recording/Reviewing Of Memorised Values (Mem/Mr Key) - Chauvin Arnoux C.A 6545 Notice De Fonctionnement

6.2 Recording/reviewing of memorised values (MEM/ MR key)
6.2.1 Primary MEM function (memorisation)
This function is used to record results in the device's RAM.
These results are recordable at an address identified by an object number (OBJ) and a test number
(TEST).
An object represents a «box» in which 99 tests can be stored. An object can thus represent a machine
or an installation on which a number of measurements will be performed.
1. When the key is activated, the MEM symbol flashes and the small display indicates the first OBJ:
TEST Free, for example, 02: 01. The main display indicates FrEE.
The OBJ is that of the last measurement memorised, but the TEST number is incremented by 1.
It is still possible to modify the OBJ: TEST using the
If the user selects an already occupied memory address, OCC appears on the main display.
If a new OBJ is selected, TEST is set to 01.
2. By pressing again on the MEM key, the results of measurements in progress will be recorded in the
selected memory address (whether occupied or not). The MEM symbol no longer flashes and remains
displayed. The time and date of this recording are memorised with already available data (R, U, t).
If another key than MEM where the switch is activated before the second press of MEM, the
record mode will be exited without memorising the results.
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3. If a programmed-time test was performed, intermediate measurements (samples) are available (see
§ 4.3). They are automatically recorded under the same OBJ number: TEST as the final measurement.
Estimate of result recording capacity
Total memory space: 128 Kbytes
Internal management: 8 Kbytes
Memory space available: 120 Kbytes
An insulation measurement result requires approximately 80 bytes.
In "Programmed-time test"
It is therefore possible to record approximately 1500 insulation measurements.
Memory space available
This function is automatically activated when recording a result.
Press once on MEM to obtain the OBJ. Next free TEST; the indication of the bargraph is proportional to
the free memory available.
- If the entire memory is free, all the segments are activated.
- If the entire memory is full, the left-hand bargraph arrow flashes.
- When the recording is completed, the bargraph fades.
One segment of the bargraph corresponds to about 50 recordings.
6.2.2 Secondary MR function
The MR function is used to recall any data from the memory, regardless of the position of the rotary
switch.
When the key is activated, the MR symbol is displayed (not flashing).
The small display indicates the last OBJ: TEST busy, for example, 02:11.
02 «11» opposite the flashing TEST symbol, the normal modification procedure with keys
must be used to select the OBJ: TEST required.
, a sample requires 10 additional bytes.
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