Keysight Technologies N5261A, User'S And Service Manual

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Keysight N5261/62A User’s & Service Guide 43
Installation & System Operation
Procedure
This procedure assumes that you have a Transmission/Reflection module on
each port. If not, the procedure will have to be modified appropriately.
The Operational Check procedure verifies that the banded system is connected
correctly and the modules, test set and analyzer are operating properly.
1. Allow the system to warm up for at least 30 minutes.
2. Attach a waveguide extension section to each module’s waveguide flange
port to protect the modules waveguide connector.
3. Verify that the analyzer is in Millimeter mode and that the frequency range
is correct for the configured millimeter system.
4. To verify the port as a receiver, perform the following steps:
a. Connect a short to Port 1.
b. Display all receivers on the analyzer’s screen using the following
menu selections: [System] > Service > Utilities > Receiver Display.
c.
Compare the A,1 and R1,1 traces to the data for your modules ' Test
and Reference receivers. The general shape should be similar, but not
necessarily identical to the graphics in the module documentation.
Depending on the PNA model used, there may be a level shift of up to
10 dB. If a waveguide short is not connected the Test Receiver level
will appear to have low amplitude.
d.
Next, setup a two stack window display: Display > Layout > Stack 2x.
A representative view of a Banded System verification display is
shown in Figure 1-29 .
e. Compare the B,2 and R2,2 traces to the data for your modules
'
Test
and Reference receivers for the millimeter-wave module on Port 2.
The general level and shape should be similar.
f. Repeat
step d
and
step e
f
or Port 3 and compare trace 3 C,3 and R3,3.
g. Repeat
step d
and
step e
for Port 4 and compare trace 4 D,4 and R4,4.