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Frequency or % Duty Cycle Measurements
(Model 20250-53 only)
1. Set the rotary function switch to the Hz% position.
2. Press the Hz%
button to indicate “Hz” in the display.
3. Insert the black lead banana plug into the negative COM jack
and the red test lead banana plug into the positive Hz jack.
4. Touch the test probe tips to the circuit under test.
5. Press the Hz%
button again to indicate “%” on the
display. Read the % of duty cycle on the display.
Frequency Measurement (Model 20250-54 only)
1. Set the rotary function switch to the Hz position.
2. Insert the black test lead banana plug into the negative
COM jack and the red test lead banana plug into the
positive Hz jack.
3. Touch the test probe tips to the circuit under test.
4. Read the frequency in the display. The digital reading
will indicate the proper decimal point, symbols (Hz, kHz,
MHz), and value.
Temperature Measurement (Model 20250-54 only)
1. Set the rotary function switch to the Temp °C or Temp °F
position.
2. Insert the temperature probe into the input jacks, making
sure to observe the correct polarity.
3. Touch the probe head to the part whose temperature
you wish to measure. Keep the probe touching the part
under test until reading stabilizes (about 30 seconds).
4. Read the temperature measurement on the display.
1065DGMAN_20250-53-54 Manual.indd 13
8/16/2017 10:42:05 AM
