GUI reference
R&S
®
ZNB/ZNBT
730
User Manual 1173.9163.02 ─ 62
The required number of points depends on:
●
the frequency span
Δf = f
stop
– f
start
(see
"Start Frequency / Stop Frequency / Center
●
the stop distance
d
stop
"Start Distance / Stop Distance"
●
the velocity factor
v
With
c
0
denoting the speed of light in a vacuum, the analyzer sets the number of
sweep points
N
to
N = max {
⌈
2.6 · d
stop
· Δf / (v · c
0
)
⌉
, 201}
If the required number of sweep points would be higher than 100001 (the maximum
number of sweep points of the R&S
ZNB/ZNBT), the analyzer sets
N
to 100001 and
displays the following message box:
"OK" reduces the frequency span Δf to
Δf = v · c
0
· 100001 / (2.6 · d
stop
), which makes 100001 sweep points sufficient for
unambiguous display (see the formula above). However, this reduction of the fre-
quency span comes at the cost of coarser distance resolution.
"Cancel" (default) leaves the frequency unchanged.
Remote command:
CALCulate<Chn>:TRANsform:DTFault:POINts
Cable Type...
Opens a dialog that allows to select a preconfigured cable type to be used for the cal-
culation of the Distance to Fault traces on the active channel. A cable type is defined
by its relative permittivity (or its velocity factor), and a frequency-dependent attenuation
table.
Applic softtool
