DL9110 / DL9118
Operating Instructions
- 18 -
When the Auto Start function is disabled press and hold the TEST key
to make a continuity measurement. The resistance between the test
probes is shown until the TEST key is released.
During a measurement, the measured value is shown in the primary
display and the test voltage is shown in the secondary display.
5.5 Insulation Resistance Tests
Always ensure that the circuit under test is electrically
isolated.
If the test probes are connected across a voltage of >30V
then the DL9110 / DL9118 will automatically display the
voltage between the probes, the warning buzzer will
sound and the TEST key is inhibited.
Use the rotary switch to select either the 250V, 500V or 1000V M
Ω
(DL9118 only) test.
The DL9110 / DL9118 will display the Test Lock and battery symbol for
1 second. If the Test Lock feature is required, it should be activated as
described below.
Functions keys F1-F4 have are used to select the options below:
F1
F2
F3
F4
Buzzer
Test Lock
Not used
Not used
Buzzer (F1)
When enabled, the Buzzer will sound when the continuity measurement
is less than or equal to 1M
ohm
.
Test Lock (F2)
The Test Lock is used to ‘lock’ the DL9110 / DL9118 in a continuous
measurement mode, with a single press of the TEST key. When Test
Lock is enabled the LCD shows the padlock icon. When Test Lock is
active the TEST key is locked until the option is disabled or the rotary
switch is moved to another position.
To enable the Test Lock mode, press the F2 key before the TEST key is
pressed or press F2 and the TEST simultaneously.
To disable Test Lock, press F2 or turn the rotary switch to another
position.
