Performance Verification
6
InfiniiMax III Series Probes User’s Guide
85
VNA Setup
• Power level: –6 dBm.
• Sweep: Log Frequency 50 MHz to 34 GHz, 284 points (100 pts/decade).
• IF BW: 1 kHz.
• Test port cables and adaptors (if needed) to provide male 2.92 mm connectors at
measurement planes.
• Install the BNC 50 ohm terminator to the bias input for port 1 of the VNA (on the rear
panel of E8361 PNA). This provides a DC 50 ohm termination for the probe amp output.
• Clear all traces from display, then select S12 to display.
• Set scale for S12 to 3 dB/div, with reference level to 0 dB and reference position to 5
divisions.
Procedure
1
Calibrate the PNA to the two male 2.92 mm connectors (connectors can be seen in
) using the N4692A-00F ECal module (or equivalent 2.92 mm cal kit).
2
Prepare the N5439A ZIF probe head for connection to the PV fixture as shown in
a
Install a N5440A ceramic ZIF tip into the N5439A ZIF probe head. Make sure
it is fully inserted.
b
Bend the tip wires down at their halfway point using fine tweezers.
c
Slightly spread the tips wires to better match the spacing needed for the PV
fixture.
Figure 61
N5439A ZIF Probe Head
NOTE
Allow the probe to warm up for 20 minutes before performing the
performance verification procedure.
CAUTION
As with all precision connector interfaces, make sure to torque all connections using the
proper torque wrench!
Содержание InfiniiMax III N2800A Series
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