Actron Digital Multimeter CP7676 - Manual (Page 7)

4
CYL 5
CYL
6
CYL
8
CYL
2K 200
200
750
20
2
20M
2M
200K
20K
DC V
AC V
OHMS
® CP7676
RPM
X10
750V AC
200V DC
COM V
DWELL
4
CYL
5
CYL
6
CYL
8
CYL
OFF
4
CYL 5
CYL
6
CYL
8
CYL
2K 200
200
750
20
2
20M
2M
200K
20K
DC V
AC V
OHMS
® CP7676
RPM
X10
750V AC
200V DC
COM V
DWELL
4
CYL
5
CYL
6
CYL
8
CYL
OFF
4
CYL 5
CYL
6
CYL
8
CYL
2K 200
200
750
20
2
20M
2M
200K
20K
DC V
AC V
OHMS
® CP7676
RPM
X10
750V AC
200V DC
COM V
DWELL
4
CYL
5
CYL
6
CYL
8
CYL
OFF
7
Fig. 4
Fig. 5
Fig. 6
Battery Replacement
Important: A 9 Volt battery must be installed
before using the digital multimeter. (See
procedure below for installation.)
Battery Replacement
1. Turn multimeter rotary switch to OFF
position.
2. Remove test leads from multimeter.
3. Remove three screws from back of
multimeter.
4. Remove back cover.
5. Install a new 9 Volt battery.
6. Re-assemble multimeter.
Measuring AC Voltage
This multimeter can be used to measure AC
voltages in the range of 0 to 750V. You can
use this multimeter for trouble-shooting
household electrical wiring and appliances.
To measure AC Voltages:
1. Insert BLACK test lead into the COM
test lead jack.
2. Insert RED test lead into the
V
test
lead jack.
3. Connect RED test lead to either side of
AC voltage source.
4. Connect BLACK test lead to remaining
side of AC voltage source.
NOTE: Since AC voltages alternate
between a positive and negative value,
test lead hook-up polarity is not important.
5. Turn multimeter rotary switch to 750
AC V voltage range.
6. View reading on display.
3.87K Ω and not
4K Ω that was
measured in the
200K Ω range. This
is very important
because if the
manufacturer
specifications say
that the sensor
should read 3.8-
3.9K Ω at 70°F then
on the 200K Ω range
the sensor would be
defective, but at the
20K Ω range it would
test good.
Now set the
multimeter to the 2K Ω range. (See Fig. 6) The
display will indicate an overrange condition
because 3.87K Ω is larger than 2K Ω .
This example shows that by decreasing the
range you increase
the accuracy of
your measurement.
When you change
the range, you
change the location
of the decimal
point. This changes
the accuracy of the
measurement by
either increasing or
decreasing the
number of digits
after the decimal
point.
Red
Black