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7. Frequency/duty ratio measurement
1) Insert red test leads in “Hz” jack and black test leads in“COM” jack.
2) Select the “
” position on the function switch, and press the red key to select the “Hz” frequency measurement
function. Connect the rest leads in parallel with signal to be measured.
3) Directly read out the measured frequency value from display.
4) Press SELECT to select duty ratio measurement.
Note
For measuring signal with frequency between 10Hz ~ 40kHz
The amplitude must be between 1Vrms and 30Vrms. Upper frequency limit 40MHz
Do not input frequency higher than 30V rms, which may cause personal injury
After completing all measurement operations, disconnect the test leads from the measured circuit
8. Temperature measurement
1) Select the “°C/°F” position on the function switch. The display will initially read “OL”. Short the standard test leads to display
room temperature.
2) Insert temperature K type socket in the corresponding hole as per the diagram.
3) Put temperature probe directly on the measured surface, several seconds later, directly read out the measured Celsius
temperature value from LCD.
4) Press SELECT to select Fahrenheit temperature measurement.
Note
The meter should be operated when ambient temperature is outside 18°C ~ 28°C range for accurate measurement, particularly
evident in low temperature environment.
Do not input voltage higher than DC 42V or AC 30V, which may cause personal injury.
After completing temperature measurements, remove the temperature probe.
