12
Frequency Measurements
1. Connect and make the measurement required as described in the
previous paragraphs.
2. Press the Hz key to select the Frequency (Hz) function.
3. Read the frequency on the display
Notes on sensitivity:
Input sensitivity varies automatically with function range selected. The
mV function has the highest (300mV) and the 1000V range has the
lowest (300V) sensitivity. It is recommended that the user first
measure the signal voltage (or current) level before activating the Hz
function to automatically set the most appropriate trigger level. You
can also press the RANGE button momentarily to select another
trigger level manually. If the Hz reading becomes unstable, select a
lower sensitivity to avoid electrical noise. If the display is zero, select
a higher sensitivity.
Diode Test
1. Insert the black lead into the negative
COM
jack and the red test lead
into the positive jack
2. Set the function switch to "
CAP
" position.
3. Press the SELECT key momentarily to select the diode function (if
required).
4. Touch the test probe tips to the diode or semiconductor junction you
wish to test. Note the meter reading.
5. Reverse the test lead polarity by reversing the red and black leads.
Note this reading.
6. The diode or junction can be evaluated as follows:
A. If one reading displays a value and the other reading displays "OL",
the diode is good.
B. If both readings display "OL", the device is open.
C. If both readings are very small or 0, the device is shorted.
Temperature Measurements (MP530 only)
1. Insert the Temperature Probe into the
COM
and
TEMP
input jacks
observing polarity.
2. Set the function switch to the
"TEMP"
position.
3. Use the SELECT key to toggle between
o
C and
o
F.
4. Touch the Temperature Probe tip to the device under test.
5. Wait 30 seconds for the measurement to stabilize then read the
display.
