R&S ZNB Series User Manual

GUI reference
R&S
®
ZNB/ZNBT
733User Manual 1173.9163.02 ─ 62
expressed in units of dB/m. Due to the skin effect and various other factors, the attenu-
ation is frequency-dependent.
For predefined cables, the table is read-only.
Access: Available Cable Types... dialog > "Attenuation" column > ...
Given the specified attenuation values the R&S ZNB/ZNBT calculates the attenuation
factor at the center of the channel's sweep range and corrects the impulse response
trace using this attenuation factor Attenuation (f
center
).
The frequency dependence can be defined in two alternative ways:
●
Single reference frequency
If the cable attenuation is specified at a single frequency f
1
, the R&S ZNB/ZNBT
calculates Attenuation (f
center
) using
Attenuation (f
1
) / Attenuation (f
center
) = sqrt (f
1
/ f
center
),
which accounts for the impact of the skin effect.
●
Frequency list
If the cable attenuation is specified at several frequency points, the R&S ZNB/
ZNBT calculates the Attenuation (f
center
) by linear interpolation. If f
center
is below
(above) the specified frequency range, then Attenuation (f
center
) is linearly extrapo-
lated from the two lowest (highest) frequency points.
It is recommended to specify the cable attenuation as accurately as possible. The cor-
rection due to the attenuation factor is proportional to the measured distance between
the fault and the reference plane: The larger the distance, the larger the correction.
Add / Delete
Creates/deletes a user-defined cable type.
Remote command:
CALCulate<Chn>:TRANsform:DTFault:DEFine
CALCulate<Chn>:TRANsform:DTFault:DELete
MMEMory:LOAD:CABLe
MMEMory:STORe:CABLe
Import Cable Type
Opens the "Import Cable Type" variant of the Open File dialog that lets you select a
cable type file (*.rsc) for import.
Applic softtool

R&S ZNB Series Specifications

General

Brand	R&S
Model	ZNB Series
Category	Measuring Instruments
Language	English