FS2101 datasheet(34/48 Pages) HP

34 / 48 page

Although the Cycle bit and the L_CMD lines were designed for

state analysis they can prove to be very useful in Timing analysis.

These bits can be effectively used to trigger the timing analyzer.

Note that the cycle bits and L_CMD lines pass through more

active logic than the PCI signals directly from the bus. For this

reason they may not line up exactly with the ADDR lines and

should not be used for precise timing measurements.

The demultiplexed feature of the PCI Active Analysis Probe is not

applicable to timing mode. Therefore for 32 bit timing mode

analysis does not require PODS 5 and 6 and 64 bit timing mode

analysis does not require PODS 9 and 10.

If switching between demultiplexed state and timing mode those

PODS can be ignored when in timing mode. If doing only timing

mode the multiplexed files should be used.

Touch RUN and the logic analyzer will begin to acquire data.

The analyzer will continue to acquire data and will display the

data when the analyzer memory is full, the trigger specification is

TRUE or when you touch STOP.

The logic analyzer will flash “Waiting for Trigger” while the trigger

specification is NOT TRUE.

Captured data is displayed as shown in the following figure.

Using the Cycle bits

and L_CMD lines

Demultiplexed

versus Multiplexed

Acquiring Data

The Waveform

Display

FS2101 Datasheet(PDF) 34 Page - Agilent(Hewlett-Packard)