Test 2. Bandwidth - Keysight N2795A User Manual

4 Performance Verification

Test 2. Bandwidth

Using the 8720ES VNA successfully
Procedure
38
This test ensures that the Probe meets its specified bandwidth.
N2795A bandwidth:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 GHz
N2796A bandwidth:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 GHz
NOTE Allow the probe to warm up for at least 20 minutes.
Remember 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 Auto Probe Adapter and
power the probe using the 1143A power supply. Install the
outside thread adapter to the Auto Probe Adapter.
N2795/6A User's Guide