7-16 PN: 10580-00343 Rev. H S820E UG
7-3 Calibration Setup Calibration, VNA
Thru Device
After you have set up Port 1 and Port 2 DUT and cal kits, you must also set
the Thru Device that is used in the Thru step of the calibration that is being
conducted, if applicable. The Thru device accounts for any extra length that is
used during the calibration steps (such as an adapter) but is removed for the
actual measurement of the DUT. In these cases, if the Thru device length is
not accounted for, then the resulting measurements will have an offset error.
The Thru device length can be set in units of distance or time, or it can be set
to equal the Thru length offset of the cal kits that are used for Port 1 or
Port 2, if applicable. Figure 7-10 shows the selection window for the Thru
device setting.
Figure 7-10. Thru Device Setting
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