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EVM892
29.04.2010 ©Velleman nv
11
Notes:
Never perform continuity or diode measurements on a live circuit and make
sure all capacitors are completely discharged.
Measuring diodes that are part of a circuit might produce faulty results.
Consider disconnecting them from the circuit.
Measuring capacitance
Do not perform capacitance measurements on live circuits. Use the
included adaptor socket.
Connect the black test lead to the "COM" jack and the red test lead to the
"mA/TEMP/CAP/hFE" jack.
Connect the test probes to the included adaptor socket respecting the polarity.
Select the appropriate "CAP" range with the FUNCTION switch. When the range
is unknown, always select the highest possible range and lower to the
appropriate range.
Place the capacitor under test in the adaptor socket, respecting the polarity in
case of a polarised capacitor (the “+” of the capacitor must be inserted in the Lx
jack, the “-” with the Cx jack).
The measured value appears on the display.
Notes:
Never perform capacitance measurements on a live circuit and make sure all
capacitors are completely discharged.
Should the measured capacitance exceed the selected range the display will
show “1”.
Transistor test (hFE)
Do not perform transistor measurements on live circuits. Use the
included adaptor socket.
Connect the black test lead to the "COM" jack and the red test lead (+) to the
"mA/TEMP/CAP/hFE" jack.
Connect the test probes to the included adaptor socket respecting the polarity.
Select the hFE-range with the FUNCTION switch.
Determine whether the transistor is of the NPN- or PNP-type and locate the
emitter, the base and the collector. Insert the leads into the proper holes in the
included adaptor socket.
The display will show the approximate hFE-value (current gain). Base current
10µA, Vce 2.8V.
Measuring temperature
Do not touch any live parts with the temperature measuring
probe. Use the included adaptor socket.
Connect the black test lead to the "COM" jack and the red test lead to the
"mA/TEMP/CAP/hFE" jack.
Connect the test probes to the included adaptor socket respecting the polarity.
Select the TEMP-range with the FUNCTION switch.
Insert the plug of the K-thermocouple in the adaptor socket according to the
indicated polarity.
Note: push the temperature probe firmly into the socket.
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