− 5 −
3-4 Optional Accessories
TL-5K-15 : Removable LINE lead (Red) : 15 m
Note : The period in which the insulation resistance is stable varies
depending on the length and distribution method of the cable.
[4] DESCRIPTION OF FUNCTIONS
4-1 Power/Function Switch
Turn this switch to turn on and off the power and to switch the
measuring functions.
4-2 Starting/Stopping Measurement : TEST button
Press and hold the
TEST
button for more than 2 seconds to start
the insulation resistance measurement. Press and hold the button
for more than 1 second to stop the measurement.
* The measurement of the AC/DC V functions is possible without
using the
TEST
button.
4-3 Backlight function : LIGHT Button
Press the LIGHT button to turn the display backlight on. Press
the button again to extinguish it. The backlight also goes off in 60
seconds after it is turned on.
4-4 DAR/PI Display Switching : DISPLAY Button
Press the
DISPLAY
button during or after measurement to switch
the display between the DAR (Dielectric Absorption Ratio) and PI
(Polarization Index) values. (See
5-5 DAR/PI Measurements
for details.)
4-5 Auto Hold
When the insulation resistance measurement is stopped, the last
displayed value is held automatically until the next time the
TEST
button is pressed.
* The Auto Hold display is also canceled when the function switch
position is changed.