Getting Started
If you change th
e Attenuation switch on a P2220 probe, you also need to change
the oscilloscope Attenuation option to match. Switch settings are 1X and 10X.
Attenuation switch
NOTE. When the Attenuation switch is set to 1X, the P2220 probe limits the
bandwidth of the oscilloscope to 6 MHz. To use the full bandwidth of the
oscilloscope, be sure to set the switch to 10X.
Current P
robe Scaling
Current probes provide a voltage signal proportional to the current. You need to
set the oscilloscope to match the scale of your current probe. The default scale is
10 A/V.
For example, to set the scale for a current probe connected to CH 1, push the 1 ►
Probe ►
Current ► Scale option, and select an appropriate value.
Self Calibration
The s
elf calibration routine lets you optimize the oscilloscope signal path for
maximum measurement accuracy. You can run the routine at any time but you
should always run the routine if the ambient temperature changes by 5 °C (9 °F)
or more. The routine takes about two minutes.
For accurate calibration, power on the oscilloscope and wait twenty minutes to
ensure it is warmed up.
To compensate the signal path, disconnect any probes or cables from the input
connectors. Then, access the Utility ► Do Self Cal option, and follow the
directions on the screen.
12 TBS1000 Series Oscilloscopes Installation and Safety Manual
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