Chauvin Arnoux C.A 6545 Notice De Fonctionnement page 61

4.7.5. AUTOMATIC MEASURING RANGE
th
In the SET-UP, 6 press on the
 The small display indicates rAnG,
The main display indicates Auto.

Use the key to choose a fi xed (1, 2 or 3 on the main display) or automatic (Auto on the main display)
measurement range
Note: The fi xed measurement ranges correspond to the following measurement current ranges:
1: 50 pA to 200 nA
2: 150 nA to 50 µA
3: 30 µA to 3 mA
The choice of a fi xed measurement range optimises the measurement settling time for a known
insulation resistance.
Example: Choice of range 1 for a measurement greater than 500 G  at 500 V.
4.7.6. TEST VOLTAGE LIMIT
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In the SET-UP, 7 press on the
The small display indicates 1000 V,

The main display indicates OFF,

 Choose On or OFF using key
then key .
Note: This function limits the test voltage for the insulation measurement to the maximum value which
is set here, if this function is enabled. This enables the device to be used by less experienced
persons for specifi c applications (telephony, aerospace, etc.).
This limit may be hidden by using the application software.
Example: By choosing On and a test voltage limit of 750 V, the measurement will be performed at
500 V for the corresponding position on the rotary switch and at 750 V for all the other positions
on the rotary switch (LIM appears for 3 seconds on the main display).
key:
key:
and modify if necessary the value of the voltage using key
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