R&S ZNB Series User Manual page 419

®
R&S ZNB/ZNBT
Remote command:
CALCulate<Chn>:TRANsform:TIME:STARt
CALCulate<Chn>:TRANsform:TIME:STOP
CALCulate<Chn>:TRANsform:TIME:CENTer
CALCulate<Chn>:TRANsform:TIME:SPAN
Distance Start / Distance Stop / Distance Center / Distance Span
Defines the display range for the time domain trace in distance representation (see
Time / Distance"
"Distance Start" and "Distance Stop" or "Distance Center" and "Distance Span" are
alternative settings.
Remote command:
n.a.
See
Time / Distance
"Time" and "Distance" switch over between the x-axis scaling in time units or distance
units.
The interpretation of time and distance depends on the measurement type. For reflec-
tion measurements (S-parameters S
represents the propagation time of a signal from the source to the DUT and back. For
transmission measurement, it represents the propagation time from the source through
the device to the receiver.
The distance between the source and the DUT is calculated from the propagation time,
the velocity of light in the vacuum, and the velocity factor of the receiving port:
●
Distance = <Time> * c
●
Distance = 1/2 * <Time> * c
factor 1/2 accounts for the return trip from the DUT to the receiver.
The velocity factor of the receiving port can be defined using Channel – [Offset Embed]
> "Offset" (see
Remote command:
CALCulate<Chn>:TRANsform:TIME:XAXis
5.9 Power Bw Avg softtool
The "Power Bw Avg" softtool allows you to configure the signal power, to set up the IF
signal processing, and to configure the averaging logic.
Access: Channel – [Pwr Bw Avg] hardkey
5.9.1 Power tab
The "Power" tab allows you to configure the signal power. It is identical to the "Stimu-
lus" > "Power" tab; see
User Manual 1173.9163.02 ─ 62
on page 419).
Time Start / Time Stop / Time Center / Time
0
Chapter 5.13.2.1, "Controls on the Offset
Chapter 5.8.2, "Power
Span.
or ratios with equal port indices), the time axis
ii
* <Velocity Factor> for transmission measurements
* <Velocity Factor> for reflection measurements. The
0
tab",
GUI reference
Power Bw Avg softtool
tab", on page 616).
on page 415.
"
419