Agilent Technologies Option H48 Multiport Test Set Z5623A - Manual (Page 72)

5 -4 Agilent Technologies Z5623A Option H48
Performance Verification
Test Strategy
Test Strategy
The overall test strategy of this chapter is to verify each guaranteed
specification by means of a limit test that is stored and recalled on the
network analyzer. This strategy minimizes the number of cable
connections and the amount of time required to complete the
performance verification. It also minimizes the likelihood of operator
error.
Whenever one of the limit test files is recalled, it will do the following to
the network analyzer:
• Select the correct S-parameter measurement
• Activate the proper calibration
• Put a title on the screen
• Scale the axes
• Load a limit table
• Display limit lines
• Turn on limit testing
Limit testing tells the user immediately whether the Device Under Test
passes or fails the test. The pass / fail limits are set by the limit table.
In a manner to be described later in this section, the limit table for each
test will be derived from the test limits presented in
Table 5-2 .
Once the limit test file has been created for a test, the user will run the
test as follows:
• Make the necessary cable connections.
• Issue any needed commands to the test set.
• Recall the limit test file.
Test results will be immediately displayed on the screen of the network
analyzer.
The specifications that are to be verified fall into three general
categories:
• Insertion Loss
• Return Loss
• Crosstalk
The remainder of this section describes, for each category, the S-
parameter measurement that will be used to verify the specifications.
The test limits of
Table 5-2 will be converted to S-parameter test limits
for each category.