HT instruments M70 - Manual (Page 6)

M70
EN - 5
4. OPERATING INSTRUCTIONS
4.1. INSTRUMENT - DESCRIPTION
CAPTION:
1. Inputs
2. Inputs
3. Display
4. ON/OFF key
5. LOCK key
6. ZERO and backlight key
7. GO key
8. FUNC HOLD key
Fig. 1: Instrument description
key to switch on/off the instrument
LOCK key to select the continuous mode measurement and to set the
insulation measurement time
ZERO key to calibrate the cables being used
key to on and off the backlight
GO GO key to start a measurement
ARROW
keys to select measurements
4.1.1. Switch on of meter
When the instrument is turned on all display segments are lit for just a while. Then the
instrument is ready for DC voltage measurement.
4.1.2. Auto Power OFF
The instrument automatically turns off 15 minutes after last pressure of keys. To resume
operation turn on the instrument again. When the instrument must be used for long voltage
measurements, the operator may need to disable the auto power off function. In order to
do so press the LOCK key. On next switch on autopower off will be automatically restored.
On the instrument’s LCD the symbol
is displayed only when auto power off is active.
4.1.3. Backlight
Press ZERO key to activate backlight function in any position of selector. This function is
automatically off after about 30s or pressing again ZERO key.