HP 16501A LOGIC Manual do Utilizador descarregar pdf (Página 107)

Intermodule Measurement Problems

Some problems occur only when you are trying to make a

measurement involving multiple modules.

An event wasn’t captured by one of the modules

If you are trying to capture an event that occurs very shortly after the event

that arms one of the measurement modules, it may be missed, due to internal

analyzer delays. For example, suppose you set the oscilloscope to trigger

upon receiving a trigger signal from the logic analyzer, because you are trying

to capture a pulse that occurs right after the analyzer’s trigger state. If the

pulse occurs too soon after the analyzer’s trigger state, the oscilloscope will

miss the pulse.

Adjust the skew in the Intermodule menu.

You may be able to specify a skew value that enables the event to be

captured.

Change the trigger specification for modules upstream of the one with

the problem.

If you’re using a logic analyzer to trigger the scope, try specifying a trigger

state one state before the one you are using. This may be more difficult than

working with the skew, because the prior state may occur more often and not

always be related to the event you’re trying to capture with the oscilloscope.

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HP 16501A LOGIC Manual do Utilizador Página 107