Chauvin Arnoux C.A 6536, Руководство пользователя

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19

Pressing the key activates the alarm. The alarm function
is available in insulation, resistance, and continuity
measurements. The symbol is displayed, along with the threshold, on
the secondary display unit.
ALARM
<

HOLD
While it is displayed, you can change this value using the  key, except during insulation measurements.
For each position of the switch, there are 3 pre-recorded threshold values:
„
in continuity: < 2
Ω
, < 1
Ω
and < 0.5
Ω
.
„
in resistance: > 50k Ω , > 100k Ω and > 200k Ω .
„ in insulation: < 10 k
Ω
, < 50 k
Ω
and < 100 k
Ω
.

MEM
The third threshold can be replaced by a user-programmed value.
If you want a specific threshold value, press the

key to enter the programming function, while the threshold
value is displayed.
The > symbol starts blinking; you can change it to < using the
 key. This symbol indicates the direction of
the alarm threshold: < for a low threshold and > for a high threshold.
Press the
 key again to go to the first digit, then to the decimal point, then to the second digit, etc. down
to the unit, and one final time on the

key to validate the programming of the threshold.
When the alarm threshold is crossed, i.e. when the measurement is below the low alarm threshold or above the high alarm
threshold, the instrument emits a continuous audible signal and the secondary display unit displays the crossing of the threshold.
ALARM
<
M
ALARM
k
M
>
2.10. ALARM FUNCTION
In the example above, the user can thus check that their continuity measurement is indeed less than 2
Ω
, just by listening, without
looking at the display unit. They can check insulation quality in the same way.
The HOLD key is also used to stop the buzzer after an alarm threshold is crossed.
A second press on the key deactivates the alarm.