Specifications

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• At this point, the calibration should start.
• Based on the “probe” cal kit we created, we went through the
following steps for a 3-port TRL cal:
Step 1 of 9, short to port 1
Step 2 of 9, short to port 2
Step 3 of 9, thru between ports 1 and 2
Step 4 of 9, line between ports 1 and 2
Step 5 of 9, short to port 3
Step 6 of 9, thru between ports 1 and 3
Step 7 of 9, line between ports 1 and 3
Step 8 of 9, thru between ports 2 and 3
Step 9 of 9, line between ports 2 and 3
Performing the TRL Calibration
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What About Calibrating On-Wafer?
Because delta-match cal can be performed at any interface,
on-wafer customers have the following options:
• Use ECal (or mechanical cal kit) at the end
of the cables, before connecting to the probes
(probes tend to have female connectors, so
simply add adapters to make up two pairs of
insertable cals)
• Use the probes with a 4-port with SOLT ISS
Cascade’s WinCal 2006
• Will not support 4-port TRL calibrations initially
• Allows advanced 2-port calibrations, such as the LRRM family