R&S ZNB Series User Manual page 425

®
R&S ZNB/ZNBT
●
"Auto" minimizes the sweep time. The
cates the estimated sweep time, depending on the current measurement settings.
The "Sweep Time" and "Meas Delay" values are maintained until changed explicitly
if "Auto" is switched off.
If a time sweep is active, "Sweep Time" cannot be modified. The analyzer uses the
previously defined sweep time settings.
In "Swept"
field is cleared and disabled.
Remote command:
[SENSe<Ch>:]SWEep:TIME
[SENSe<Ch>:]SWEep:TIME:AUTO
Meas Delay
Adds a delay time before the start of every partial measurement. See
"Partial measurements and driving
"Meas Delay" is not available while a "Time" or "CW Mode" sweep is active.
As an alternative to increasing the delay (and thus the total sweep time), it is possible
to select "Alternated" driving mode; see
Remote command:
[SENSe<Ch>:]SWEep:DWELl
All Partial Meas'ments / First Partial Meas'ment
If Meas Delay
ment delay is applied:
●
If "All Partial Meas'ments" is selected, the delay time is added before each partial
measurement. For a complete 2-port S-parameter measurement, the delay must
be added twice per sweep point.
●
If "First Partial Meas'ment" is selected, the delay time is added once per sweep
point only, irrespective of the measured quantities and the number of partial mea-
surements. The sweep time increases by the measurement delay times the num-
ber of sweep points.
Tip: A delay time before the start of each partial measurement increases the accuracy,
in particular for measurements on DUTs with long settling times (e.g. quartz oscillators,
SAW filters). Select "First Partial Meas'ment" if the DUT does not require an additional
settling time due to the interchange of source and receive ports.
Remote command:
[SENSe<Ch>:]SWEep:DWELl:IPOint
Freq Sweep Mode
For frequency sweeps, you can select "Stepped" or "Swept" mode (see
ter 4.1.4.5, "Stepped vs. swept
For a "Segmented" sweep, this setting can be overridden by segment-specific sweep
modes (see
Note:
●
Swept mode is only supported for linear frequency sweeps.
●
While stepped mode is always possible, even for linear frequency sweeps there
are channel setups that are not compatible with swept mode: an information popup
User Manual 1173.9163.02 ─ 62
frequency sweep mode, the "Sweep Time" is undefined. The "Sweep Time"
is set to a value > 0, this setting allows you to define how the measure-
mode",
Chapter 5.10.2.2, "Define Segments
Meas Delay is set to 0 s. "Sweep Time" indi-
mode", on page 91 .
"Driving Mode" on page 577.
on page 97).
dialog", on page 431).
GUI reference
Sweep Softtool
Chapter 4.1.4.1,
Chap-
425