BX-245 • 11
© Box 73 Amateurfunkservice GmbH 2019
When using the optional High Quality
Calibration set, all these values must be
entered in
Setup
→
Cal/Port Model Mas-
ter
and also in
Cal/Port Model Actual
.
Once this data has been entered the master
calibration has to be carried out.
Note: When using the VNWA software,
these individual values can be loaded via
a parameter file. The individual file can be
accessed via the link specified on the in-
struction leaflet supplied with the Calibra-
tion kit (CKF file). Loading and using the
CKF file is described in the Help for the
VNWA software. After completion of the
calibration, the correction values are auto-
matically stored in the analyzer so that the
correct impedance is determined on sub-
sequent measurements of the test object.
n
Basic Calibration
Three different calibration methods are
available for each measurement mode of
the analyzer:
No Calibration
This is the factory default condition, it can
be accessed through the menu by disabling
the calibration. This option can be enabled
or disabled and is accessed via
Operating
mode
→
Setup
→
SOL. Selecting... “Off”
sets the “No Calibration mode”
Current calibration
This can be performed for single-frequen-
cy mode (Fig. 13) as well as for multi-fre-
quency (Fig. 14) and 5-band measurement
mode.
The process affects only the actual single
frequency or the frequency range selected
and therefore completes very quickly. Cur-
rent calibration makes it possible to quick-
ly compensate for temporary changes in
the measurement setup or the parameters
due to temperature or other influences.
Caution! Current calibration values are
lost when changing the frequency and
when switching off the analyzer.
Fig. 12: The kit contains a set of calibration
elements for use in the frequency range up to
about 100 MHz, consisting of a 50
Ω
Termina-
tion from
Telegärtner
(centre) and two BNC
coaxial cable connector for making the Short
and Open reference elements (see text).
A set of Quality BNC calibration elements us-
able up to at least 600 MHz including mea-
surement data report is available under order
no. BX-245-SOL.
Fig. 13: Menu item for SOL compensation for
the actual frequency
Fig. 14: SOL compensation for the actual Fre-
quencies for a multi-frequency measurement
