Measurement Of Microwave Output - Panasonic NN-C784MF Service Manual

6/17/2017
3.2 Measurement of microwave output
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The output power of the magnetron can be determined by performing IEC standard test procedures.
However,due to the complexity of IEC test procedures, it is recommended to test the magnetron using the simple
method outlined below.
Necessary Equipment:
*1 liter beaker *Glass thermometer
*Wrist watch or stopwatch
NOTE:
Check the line voltage under load.Low voltage will lower the magnetron output. Take the temperature readings
and heating time as accurately as possible.
1. Fill the beaker with exactly one liter of tap water.Stir the water using the thermometer and record the
water's temperature. (recorded as T1).
2. Place the beaker on the center of glass tray.
Set the oven for High power and heat it for exactly one minute.
3. Stir the water again and read the temperature of the water. (recorded as T2).
4. The normal temperature rise at High power level for each model, is as shown in table.
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TABLE (1L­1min.test)
RATED OUTPUT TEMPERATURE RISE
1000W Min.8.6°C