Iso-Tech IDM 203 RMS Manuel D'instructions page 18

Measuring frequency
1. Plug the black lead into the "COM" input terminal and the red lead into the "V-
2. Turn the function switch to "Hz ADP" and use the function button to select frequency measurement (Hz).
3. Apply the probes to the signal source.
Note : The two least significant digits on the display may not be stable at frequencies of less than 1kHz or more than 20kHz.
ADT measurement (ADAPT)
1. Plug the black lead into the "COM" input terminal and the red lead into the "V-
2. Turn the function switch to "Hz ADP" and use the function button to select ADP measurement (ADP).
3. Apply the probes to the signal source.
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WARNING : To avoid the risk of electric shock, the test leads and the power cable must be unplugged from the meter
before the covers giving access to the fuses or batteries are removed.
To avoid the risk of fire, you should only use fuses of the types specified below with the ratings specified below.
F1: 1A/600V, 10.3 x 35mm, quick-acting (F), 1R, 10kA min.
F2: 15A/600V, 10.3 x 38mm, quick-acting (F), 1R, 10kA min.
: 6 x 1.5V: IEC LR6, AM3, AA
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-Hz- " input terminal.
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-Hz- " input terminal.
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