MI 3200 TeraOhm 10 kV
Performing measurements
10
4. Performing measurements
4. 1. Switching on the instrument
Autocalibration
The instrument is switched ON by pressing the
ON/OFF
key. After turning on, the
instrument will execute the autocalibration (
Fig. 3
).
Note:
If batteries are defective or missing and the instrument is powered from mains supply,
the instrument will not turn ON
Measuring test leads should be disconnected during autocalibration. If not, the
autocalibration procedure could be false and instrument will require disconnection of the
test leads and repeat switching OFF and ON.
After finishing the autocalibration, the
MAIN MENU
(
Fig. 4
) will appear and instrument is
ready for normal operation.
Auto-calibration prevents the reduction in accuracy when measuring very low currents. It
compensates the effects caused by ageing, temperature and humidity changes etc.
A new auto-calibration is recommended when the temperature changes by more than
5
C.
Fig. 2. First introduction
Fig. 3. Auto-calibration state
Fig. 4. Main Menu
Note:
If the instrument detects an incorrect state during the autocalibration, the following
warning message will be displayed:
ERROR!
-TEST LEADS CONNECTED:
DISCONNECT AND SWITCH ON THE INSTRUMENT AGAIN
- CONDITIONS OUT OF RANGE: PRESS START TO CONTINUE
Possible reasons for out of range conditions are excessive humidity, excessively high
temperature, etc. In this case it is possible to perform measurements by pressing the
START/STOP button again but results could be out of technical specification.
