Holdoff And Conditioning - HP 54710A User's Reference Manual

Trigger Menu

Holdoff and Conditioning

Holdoff and Conditioning

Holdoff and conditioning allows you to select a trigger holdoff value, and the
amount of trigger hysteresis that best fits your application.
Hysteresis
Hysteresis sets a threshold band that the trigger signal must cross before it is
considered a valid trigger by the oscilloscope. The greater the hysteresis, the
less sensitive the trigger circuit is to noise. However, a higher hysteresis
value also means that a bigger trigger signal is needed in order to trigger the
oscilloscope. If the trigger signal is very small, then you want less hysteresis.
If the trigger signal is very large, then you want more hysteresis, so that the
trigger circuit is less sensitive to noise.
The oscilloscope offers three Hysteresis selections: noise reject, normal, and
high sensitivity. The specifications for each of these selections depends on
the plug-in you are using. Refer to the User's Reference for the plug-in you
are using to find the hysteresis specifications. Basically, noise reject requires
the largest amplitude trigger signal and high sensitivity requires the smallest
amplitude trigger signal.
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