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Electrical Sampling Modules
c.
In the Horz Setup dialog box:
Set Record Length to
2000 points
.
Set Horizontal Reference to
50%
.
Set Scale to
50 ps/div
, while using the horizontal position knob to
keep the falling edge centered.
d.
In the Acq Setup dialog box:
Set Acquisition Mode to
Average
,
128 samples
.
Under Stop After, check
Condition
and select
Average Complete
from the pull down menu.
e.
In the Meas Setup dialog box:
Select
Meas 1
and make sure
Source1
button is selected.
Make sure the channel under test is selected in the Source tab, click
the
Pulse
Signal Type button, and then choose
Select Meas > Pulse –
Timing > Fall Time
.
Test
Follow this procedure to make the fall time checks:
1.
Push the
CLEAR DATA
front panel button.
2.
Push the
RUN/STOP
front panel button.
3.
Check that the measured fall time (re
fl
ected rise time) for the positive edge
polarity is as follows:
80E04:
≤
35 ps
80E08B:
≤
22 ps
80E10B:
≤
16 ps
4.
In the TDR Setup dialog box change C1 polarity to
negative edge
(pictured
as a falling slope).
NOTE.
Since this display is in units of rho, the waveform will not invert when the
edge polarity is changed, so the waveform will not appear to change signi
fi
cantly.
5.
Push the
CLEAR DATA
front panel button.
6.
Push the
RUN/STOP
front panel button.
DSA8300 Performance Veri
fi
cation
205
Summary of Contents for 80A00
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