27
Making Measurements
2. To select the frequency function,
press
SELECT
until
Hz
,
KHz
, or
MHz
appears.
Otherwise, to select the duty
cycle or pulse width function,
repeatedly press
Hz/DUTY/WIDTH
until
å
å
å
å
appears (to select duty
cycle) or until
µµµµ
S or mS
appears
(to select pulse width)
3. If you are measuring frequency,
press
RANGE
if necessary to
select manual range then repeat-
edly press
RANGE
until the range
you want appears.
4. Connect the black test probe to a
ground reference for the signal,
and connect the red test probe to
the signal source.
Measuring AC Voltage
Frequency
The meter can measure the frequen-
cy of an AC voltage, with or without a
DC source bias.
Warning: To avoid electrical shock
and damage to the meter, never try to
measure a frequency of more than 1
kHz between AC 40 volts RMS and
750 volts RMS.
1. If you are measuring AC voltage
with a DC source bias, set the
function selector to
dBm / ~ V
.
Otherwise, set the function selec-
tor to
°°°°
C/
°°°°
F /
V
.
Note: If the function selector is
set to
dBm / ~ V
and you want to
set the meter for maximum sen-
sitivity when measuring a new
signal, press
SELECT
to select
the ACV function then press
Hz/
DUTY/WIDTH
to select the fre-
quency function.
2. To select the frequency function,
repeatedly press
Hz/DUTY/WIDTH
until
Hz
,
kHz
, or
MHz
appears.
3. If necessary, press
RANGE
to
select manual range, then
repeatedly press
RANGE
until the
desired range appears.
Note: To change back to ACV
measurement, press
SELECT
once then repeatedly press
SELECT
to select the ACV dis-
play mode (dBm or volts).
4. To select the duty cycle or pulse
width function, repeatedly press
Hz/DUTY/WIDTH
until
å
å
å
å
appears
(to select duty cycle) or until
µµµµ
S
or
mS
appears (to select pulse
width).
5. If
å
å
å
å
,
µµµµ
S, or mS
appears and you
want to select the frequency
function again, repeatedly press
Hz/DUTY/WIDTH
until
Hz
,
kHz
, or
MHz
appears.
6. Connect the test leads to the
device you want to check.
