PeakTech 1640 Bedienerhandbuch Seite 38

The display value is the test lead resistance to be
subtracted.
7. After completing measurement, disconnect the test leads.
6.5. Continuity testing
)
)
1. Select the ) position by turning the rotary selector switch.
°
2. Follow step 2 and 4 as for resistance measurements.
3. An audible tone will sound for resistance less than approx.
100 Ω. After all measurements are completed, disconnect
the test leads from the circuit and from the input terminals.
6.6. Diode testing
CAUTION!
Measurements must only be made with the circuit power
OFF.
1. Set the rotary selector switch to the
2. Follow steps 2 and 4 as for resistance measurements.
3. The red test lead should be connected to the anode and the
black 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.
4. If the diode is reverse biased or there is an open circuit the
display shows "OL".
6.7. Frequency measurements
1. Set the rotary selector switch to the Hz% position.
2. Plug the black and red test leads into the COM and Hz input
terminals respectively.
- position.
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