Mechanical Cal - Agilent Technologies FieldFox N9913A User Manual

Optionally Connect Load(s)
 Connect a Load standard at the point where the DUT will be connected and
 Press
Connect THRU (Not used for 1-port cals)
 Connect port 1 to port 2, either by mating the connectors that attach to the
 Press Finish.
CAL ON Q
corrected with QuickCal.
Using QuickCal with a Long Jumper Cable
QuickCal requires sufficient frequency resolution to adequately characterize the
jumper cable (cable between the instrument port and the DUT). QuickCal may
automatically acquire more points for longer jumper cables, resulting in longer
calibration times.
QuickCal is also limited in how much jumper cable loss it can tolerate. If
QuickCal without the load is failing, then measure the load during the QuickCal
to see if that resolves the issue.

Mechanical Cal

Mechanical Calibration is performed using discrete standards from a Cal Kit.
Several Cal Kit definitions are built into the FieldFox.
NOTE Visit
Cal Kits. Also at this website, download DataLink software that allows you to
edit Cal Kit definitions or add a new Cal Kit.
Mechanical Cals are extremely accurate when performed using the correct Cal
Kits with standards that are clean and in good repair, and when using correct
connection procedures.
How to perform a Mechanical Cal
 Disconnect the DUT from the FieldFox.
 If a jumper cable or adapter is required to connect the DUT to the FieldFox,
66
Measure
press under the following conditions:
When a jumper cable has too much loss. If a 'Cal Failed' error appears and
o
you skipped the Load measurement, then perform the Cal again but
measuring the Load.
When your DUT has high return loss such as the reject band of a filter. Then
o
measuring the load improves accuracy. Even with the optional Load, phase
accuracy begins to degrade when the return loss is greater than about 20dB.
Skip Step
in all other cases and when making DTF measurements.
Measuring a load would do little to improve accuracy.
DUT (Flush THRU), or by using a short jumper cable. Learn more about Flush
THRU on page 69. Then press Measure.
is shown on the screen for all displayed measurements that are
www.agilent.com/find/fieldfoxsupport
then connect those components to the FieldFox connectors. The effects of
those components will be measured and removed during the calibration, and
only the effects of the DUT will be displayed in the measurement results. These
should be high-quality components!
to see a complete list of supported
FieldFox User's Guide