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5
Performance Verification
Test 2. Bandwidth
Test 2. Bandwidth
Using the 8720ES VNA
successfully
Procedure
42
NOTE
Allow the probe to warm up for at least 20 minutes.
Observe these simple guidelines when working with the
8720ES VNA during this procedure.
■
Sometimes it may take a few seconds for the waveforms
to settle completely. Allow time for waveforms to settle
before continuing.
■
Make sure all connections are tight and secure. If needed,
use a vise to hold the cables and test board stable while
making measurements.
■
Be careful not to cross thread or force any connectors.
This could be a very costly error to correct.
Initial Setup
1
Turn on the 8720ES VNA and let warm up for 20 minutes.
2
Press the green [Preset] key on the 8720ES VNA.
3
On the VNA, press the [Power] key and set the power to 0
dBm.
4
On the VNA, press the [AVG] key and then select the
Averaging Factor screen key. Set averaging to 4.
5
On the VNA, press the [Sweep Setup] key and then press the
sweep type menu screen key. Select the log freq screen key.
6
Connect the probe under test to the AutoProbe Adapter and
power the probe using the 1143A power supply as shown in
Figure 15
on page 43. Install the outside thread adapter to
the AutoProbe Adapter.
N2797A User's Guide
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