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Chapter 9 133
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Automated Performance Tests
XTALK XX->YY Measures crosstalk resulting from worst-case mismatch
(shorts) between the selected ports of the test set. Tests the
specified performance of “Crosstalk,” listed in Table 8-2 in
Chapter 8, “Specifications.”
Steps:
3
•Set specified frequency for test set.
•Set measurement parameters: system bandwidth=30 Hz,
Average Factor=8, and Power Level=10.
•Connect the analyzer to the test set using the test cables.
Repeat the following steps for each pair of ports to be
tested:
•Connect a through cable between ports XX and YY, and
perform Response Cal.
•Remove the through cable and connect shorts to ports XX
and YY.
•Measure transmission (S
21
).
•If the specification is 57 dB, the trace must be below −57
dB.
1. For E5061A/62A analyzers only.
2. Direction of measurement does not matter.
3. Crosstalk measurements done on 11 pairs: port 1 to port 2, port 2 to port 3... port 11 to port 12. Pairs that
begin with odd numbers are adjacent pairs. The five pairs that begin with even numbers are considered the
worst-case nonadjacent pairs. Other nonadjacent pairs are not tested (for example, port 2 to port 4). This
test measures the crosstalk within the testset with worst-case DUT port matches.