Capacitance Measurements
1. Insert the black lead into the negative COM jack and the red test lead
into the positive CAP jack.
2. Set the function switch to the " CAP" position.
3. Press the SELECT key momentarily to select Capacitance
4. Touch the test leads to the capacitor to be tested and read the
measured value.
Line Frequency Measurements
1. Connect and make a voltage or current measurement 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:
The input sensitivity varies automatically with voltage (or current)
range selected. The lower the measuring range, the higher the
sensitivity. It is recommended to first measure the voltage (or current)
level then activate the Hz function in that voltage (or current) range to
automatically get the most appropriate trigger level. When activated
from voltage function, you can also press the RANGE key
momentarily to select another trigger level range manually. The
analog bargraph pointer will point at the selected trigger level range
scale 1, 2, 3, or 4. If the Hz reading is unstable, select lower
sensitivity to avoid electrical noise. If the reading shows zero, select a
higher sensitivity.
Logic Level Frequency Measurements
1. Insert the black lead into the negative COM jack and the red test lead
into the positive V jack.
2. Set the function switch to the “Hz” position.
3. Press the SELECT key momentarily to select Hz
4. Read the frequency on the display
5. Press the 500000 key momentarily to toggle between 5 full digits and
6 full digits display.
% Duty Cycle
1. Insert the black lead into the negative COM jack and the red test lead
into the positive V jack.
2. Set the function switch to the “Hz” position.
3. Press the SELECT key momentarily to select %
4. Read the % duty cycle on the display
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EXTECH [ EXTECH INSTRUMENTS CORPORATION. ]
