Agilent Technologies 93000 SOC Series Training Manual page 378

Test Result Analysis
Softscope mode description
378
Method 2
1 Select Select -
This changes to Softscope mode and allows you to scroll to the
cycles you want to examine.
When you stop scrolling, the Timing Diagram automatically samples
the cycles shown in the display.
Figure 239 Timing Diagram - Scope mode
N O TE
Using the P
by the Softscope. By default, one test is performed for each pixel to be
displayed. A P
In this mode timing and voltage are varied in the region to be displayed,
producing the equivalent of a scope picture. Several functional tests
with various level and edge settings are performed.
Figure 239
mode. As you now see, the waveform has some interesting characteris-
tics which did not show up in the other modes (It is an io pin driving a
signal into an unterminated transmission line).
N O TE It is important to understand that this display is not the same as when
monitoring a scope probe at the DUT, since these measurements are
made at the comparator.
For output pins, this accurately reflects what the tester sees. On io
pins, the results depend on what data are being driven by the driver,
and what load is present at the DUT.
Agilent 93000 SOC Series User Training Part 1, October 2004
13-3 Analyzing Waveforms (Timing Diagram)
scope.
parameter, you can reduce the number of tests performed
IX
parameter of n results in one test for each nth pixel.
IX
shows the same waveform as the previous picture in scope