R&S ZNB, Руководство пользователя

Страница: 393 / 1496

GUI Reference
R&S
®
ZNB/ZNBT
393 User Manual 1173.9163.02 ─ 55
Meas Delay
Adds a delay time before the start of every partial measurement. See Chapter 5.1.4.1,
"Partial Measurements and Driving Mode" , on page 83 .
"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
"Driving Mode" on page 540.
Remote command:
[SENSe<Ch>:]SWEep:DWELl
All Partial Meas'ments / First Partial Meas'ment
If Meas Delay is set to a value > 0, this setting allows you to define how the measure-
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 Chap-
ter 5.1.4.4, "Stepped vs. Swept Mode" , on page 88).
For a "Segmented" sweep, this setting can be overridden by segment-specific sweep
modes (see
Chapter 6.10.2.2, "Define Segments Dialog" , on page 399).
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
displays the corresponding error code and description (see
[SENSe<Ch>:
]SWEep:GENeration:ANALog:CONDition?
)
●
It is essential to perform the calibration with the same "Freq Sweep Mode" settings
as for the actual measurement; otherwise the calibration is deactivated ("Cal Off").
The
Calibration Manager Dialog provides concise information on possible mode
mismatches.
●
A scalar power calibration cannot be created or used in swept mode.
Sweep Softtool