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Electrical Sampling Modules
Input Impedance
These procedures check the characteristics related to the signal acquisition and are
listed as checked in the
DSA8300 Digital Serial Analyzer Speci
fi
cations
manual.
Equipment required
Adapter, SMA female to BNC male connectors (item 3)
Adapter, BNC to dual banana plugs (item 4)
Cable, coaxial 50
Ω
, 20 in (0.5 m), male-to-male SMA (item 15)
Digital multimeter (item 18)
Prerequisites
Setup
Figure 15: Input impedance test setup
1.
Install the 80E0X module into the left-most small module slot of the
instrument.
2.
Connect the Digital multimeter to Channel
1
of the 80E0X module as shown
in the
fi
gure.
3.
Set the DSA8300 as follows:
a.
Select
C1
from the Waveform Selector menu on the controls bar at the
bottom of the display (left corner).
b.
In the Mode/Trigger dialog box, select
TDR
(200 kHz).
c.
In the Vert Setup dialog box, set the Channel Offset to
0.0 V
.
d.
In the Horz Setup dialog box:
Set Scale to
2 ns/div
.
Set Position to
0
(this will automatically change to the minimum
non-zero value).
Set Horizontal Reference to
0%
.
e.
In the Acq Setup dialog box, set Acquisition Mode to
Sample
.
DSA8300 Performance Veri
fi
cation
175
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