Capacitance Measurement; Frequency Measurements - PeakTech 1655 Mode D'emploi

4. The red test lead should be connected to the anode and the lack lead to the cathode. For a
silicon diode, the typical forward voltage should be about 0,7 V or 0.4 V for a germanium diode.
5. If the diode is reverse biased or there is an open circuit the display shows "OL".

6.6. Capacitance measurement

1. Turn off power to the device under test and discharge all capacitors.
2. Discharge all voltage from the capacitor before measuring is capacitance value.
Note: A safe way to discharge a capacitor is to connect a 100 k resistor across the two
capacitor leads.
3. Set the rotary switch to the V//CAP/
4. Select the CAP-function by pressing MODE-button.
5. Plug the black and red test leads into the COM and V//CAP/
respectively. Touch the probes to the capacitor. Always observe polarity makings when
measuring capacitors.
6. For best accurate results press the ZERO-button before measurement.
7. Read capacitance value directly from the display.
8. After completing the measurement, disconnect the test leads.

6.7. Frequency measurements

1. Set the rotary switch to the Hz/% position
2. Plug the black and red test leads into the COM and V//CAP/
respectively.
3. Attach the probe tips to the points across which the frequency is to be measured, and read the
result directly from the display.
4. Read the Duty Ratio on the cover small display.
5. Disconnect the test leads.
/Hz range.
-33-
/Hz input terminals
/Hz input terminals