
DL9120 / DL9130
Operating Instructions
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5.3 Continuity Tests
Always ensure that the circuit under test is electrically
isolated.
Measurements can be adversely affected by impedances
of additional operating circuits connected in parallel or by
transient currents.
If the test probes are connected across a voltage of >30V
ac/dc then the DL9120 / DL9130EV will automatically
display the voltage between the probes, the warning buzzer
will sound.
Rotate the rotary switch until the Continuity test is selected.
When the continuity test is selected, the DL9120 / DL9130EV will display
the user selectable test options for a short period of time; Buzzer, R max,
Lead Zero and 15/200mA (15mA DL9130EV only). If the Buzzer or Lead
Zero was previously enabled, then the icon will remain on the display
when the continuity test is selected. If the Lead Zero is disabled then the
icon will flash to indicate that the leads should be zeroed, if the Buzzer or
R max are disabled then the icons will not be displayed.
Functions keys F1-F4 have are used to select the options below:
F1
F2
(DL9130EV)
F3
F4
Buzzer
R max
Lead Zero
200 / 15mA
(DL9130EV)
Buzzer (F1)
When enabled, the Buzzer will sound when the continuity measurement
is less than 20 ohms.
R max (F2, DL9130EV only)
When enabled, the DL9130EV will record the highest continuity
measurement taken. This will be displayed in the secondary display.
When this function is disabled, the maximum recorded value is reset.
Lead Zero (F3)
The instrument can automatically compensate for the resistance of the
test leads as follows:
Fit the supplied crocodile clips to the red and green test leads and connect
the crocodile clips firmly together using both lower parts of the jaw. Press