B&K Precision 2532B - Manual - Manual (Page 20)

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Connect the probe to the oscilloscope and connect the ground terminal to
ground before you take any measurements.
Probe Attenuation
Probes are available with various attenuation factors which affect the
vertical scale of the signal. The Probe Check function verifies that the
Probe attenuation option matches the attenuation of the probe.
You can push a vertical menu button (such as the CH 1 MENU button), and
select the Probe option that matches the attenuation factor of your probe.
Be sure that the attenuation switch on the probe matches the Probe option
in the oscilloscope. Switch settings are 1X and 10X.
Note： ● To avoid electric shock when using the probe, keep fingers behind
the guard on the probe body.
● To avoid electric shock while using the probe, do not touch
metallic portions of the probe head while it is connected to a
voltage source. Connect the probe to the oscilloscope and
connect the ground terminal to ground before you take any
measurements.
Note. The default setting for the Probe option is 1X.