22 • BX-245
© Box 73 Amateurfunkservice GmbH 2019
DSP Setup
In the multi-function
Sweep DSP Mode
menu, DSP settings can be made for mul-
ti-frequency measurements (Fig. 42). The
options are
Fast
,
Standard
and
Precise
.
Note: More accurate measurement re-
quires longer execution times.
Calibration Set Data
Accuracy of the displayed measurement
data, especially at higher frequencies, de-
pends entirely on the SOL calibration set
used and how calibration is carried out.
The menu items
Cal/Port Model Master
and
Cal/Port Model Actual
allow you to
enter appropriate parameters for the mas-
ter and the current calibration. In practice
this data is provided by the manufacturer
of the calibration kit and is entered only
once. In addition, it is possible to move the
measurement plane level by
port extension
by specifying a runtime in picoseconds.
SOL All Frequencies
This item has already been covered in the
section
Basic Calibration
(
SOL Compen-
sation
).
Callsign
If you want to personalize your FA-VA5,
you can use this menu item, e.g. to save
your call sign (maximum 9 characters).
Display Backlight
The available options are
Off
,
Dim
,
On
,
Auto
,
Backlight Auto Time
and
Back-
light%
. (Fig. 44 and 45). When Auto is se-
lected, the backlight is switched off after
some time, but is switched on again when
a button is pressed by the user. It is recom-
mended to set the display backlight to Off
or to Auto mode, as power consumption
of the graphic display with backlight On
is relatively high. The switch-on time of
the backlight in Auto mode can be set on
seconds via menu item
Backlight Auto
time
. In addition, the FA-VA5 also offers
the possibility of working with reduced
backlight which will lower power con-
sumption. The mode will then be Dim in-
stead of On. The associated menu item
Backlight %
is used to set the brightness
setting.
Fig. 41: Setup mode, second section
Fig. 43: Setup mode, third section
Fig. 42: DSP Setup options
