isweek M9803R, Руководство пользователя, Страница: 29 / 44

WARNING
Turn off power to the device under test and discharge all capacitors
.
The measuring capacitance is as follows
:
1
.
Turn off power to the device under test and discharge all capacitors
.
2
.
Discharge all voltage from the capacitor before measuring its capacitance value
.
3
.
Set the capacitance range that gives the most accurate measurement reading or to select autorange
.
4
.
Connect the alligator clips to capacitor leads or insert leads of the capacitor into multimeter
measuring socket
.
Always observe polarity makings when measuring pobrized capacitor
.
5
.
Read capacitance value directly from display
.
The measurement accuracy of capacitors can be
improved by first using the
(
Relative mode
)
to zero the and automatically subtract the residual
multimeter and test lead capacitance
.
Since the Relative mode also selects manual ranging
.
6
.
Residual voltage charges on the capacitor
,
or capacitors with poor insulation resistance or poor
dielectric absorption may cause measurement errors
.
NOTE
:
A safe way to discharge a capacitor is to connect a 100k
Ω
resistor across the two capacitor leads
.
①
.
Turn the Selector to Capacitance
.
②
.
Connect the leads as shown
:
Insert the black and red test leads into the COM and V Ω Hz input
terminals respectively
.
③
.
is not available in The Capacitance
;
all other buttons can be used
.
2-13