Actron AutoAnalyzer CP7665 - Manual (Page 8)

8
3. Remove screws from back of
multimeter.
4. Remove back cover.
5. Remove fuse.
6. Replace fuse with same size
and type as originally
installed!
5mm x 20mm, 200mA, 250V,
fast acting.
7. Re-assemble multimeter.
Measuring DC Voltage
This multimeter can be used to mea-
sure DC voltages in the range from 0
to 500V. You can use this multimeter
to do any DC voltage measurement
called out in the vehicle service
manual. The most common applica-
tions are measuring voltage drops,
and checking if the correct voltage
arrived at or is being produced by a
sensor or a particular circuit.
To measure DC Voltages (see Fig. 7):
1. Insert BLACK test lead into
COM test lead jack.
2. Insert RED test lead into
test lead jack.
3. Connect RED test lead to posi-
tive (+) side of voltage source.
4. Connect BLACK test lead to
Fig. 7
negative (-) side of voltage
source.
NOTE: If you don’t know which
side is positive (+) and which
side is negative (-), then arbi-
trarily connect the RED test lead
to one side and the BLACK to
the other. The multimeter auto-
matically senses polarity and will
display a minus (-) sign when
negative polarity is measured. If
you switch the RED and BLACK
test leads, positive polarity will
now be indicated on the display.
Measuring negative voltages
causes no harm to the multim-
eter.
5. Turn multimeter rotary switch
to desired voltage range.
If the approximate voltage is un-
known, start at the largest voltage
range and decrease to the appro-
priate range as required. (See
Setting the Range on page 6)
6. View reading on display - Note
range setting for correct units.
NOTE: 200mV = 0.2V
Measuring AC Voltage
This multimeter can be used to mea-
sure AC voltages in the range from
0 to 500V.
To measure AC Voltages (see Fig. 8):
Red Black
Fig. 8
Red
Black