UNI-T UT105 User Manual

Measurement Operation(8)
F.Dwell Testing (see figure 7)
It was very important in the past to test the dwell of the
cut-off switch of an ignition system. The dwell testing
means the duration when the cut-off switch remains off
when the cam is turning. Now as an automobile is ignited
electronically, it is no longer necessary to adjust the dwell.
In addition, the dwell testing can also be used to test a
mixed-controlled solenoid.
(e.g. GM feedback carburetor).
1. Set the rotary switch to DWELL .
2. As prompted at the LCD connect terminal, insert the
red test lead into the terminal and the black test lead
into the COM terminal. Connect the ends to be tested
as illustrated.
l If the cut-off switch of an ignition system is
tested, connect the red test lead probe to the
primary negative end of the ignition coil.
(Refer to the automotive servicing manual for
the specific position.)
Model UT105: OPERATING MANUAL
24

UNI-T UT105 Specifications

General

Product type	Digital multimeter
AC voltage range	2 - 750 V
DC current range	0.2 - 10 A
DC voltage range	0.2 - 1000 V
Dimensions (WxDxH)	88 x 39 x 179 mm
Battery voltage	9 V

Weight and Dimensions

Weight	352 g