Preparation for tests
7.1.
Auto-power-on / switching on
The tester switches on when it detects continuity, an AC or DC voltage above approx. 10V
or a live phase on L2 (single pole test).
It can be switched on with the torch light button.
7.2.
Auto-power off
Tester is automatically powered off after 5 sec when there is no signal contacted to the
probes.
The torch light switches off after approx. 10 sec.
Conducting tests
8.1.
Voltage test
Connect both probes to the object under test.
The voltage is indicated by LEDs and LCD (MD 1160 only)
Buzzer sounds when a threshold voltage of approx. 38VAC or approx. 100 VDC is
exceeded.
Voltage polarity is indicated in following manner.
AC: + and – 12V LED are on
+DC: +12V LED is on
-DC: -12V LED is on
When the L2 probe + is the positive (negative) potential, the Polarity indication LED
indicates "+DC" ("-DC").
During voltage test, L or R LED may light up.
In case of empty batteries, the ELV LED lights up >50VAC, >120VDC.
8.2.
Single-pole phase test
Function of this test may not be fully achieved if the insulation condition/ grounding
conditions of user or of the equipment under test aren't good enough. Verification of live-
circuit shouldn't be dependent on this Single-pole phase test only, but on the voltage test.
Hold the tester good in your hand. Connect the "L2 +" probe to the object under test. Live
circuit LED lights up and buzzer sounds when a voltage of approx. 100V AC or more exists
in the object under test. (Pol≥100VAC).
8.3.
Phase rotation test
L LED and R LED for Phase rotation test may operate on various wiring systems, but
effective testing result can be obtained only on three-phase 4-wire system.
Hold the tester good in your hand and connect both probes to the object under test.
Phase-to-phase voltage is indicated by Voltage LEDs.
R LED lights up for Right rotary field.
L LED lights up for Left rotary field.
Measurement principle: The instrument detects the phase rising order regarding the user as
earth.
Function of this test may not be fully achieved if the insulation condition/ grounding
conditions of user or of the equipment under test is not good enough.
8.4.
Continuity test
Make sure the object under test isn't live.
Connect both test probes to the object under test. Continuity LED lights up and buzzer
sounds continuously to indicate continuity.
16
MD 1060, MD 1160