Rohde & Schwarz R&S UPP, User Manual

Page: 306 / 938

Instrument Functions
R&S
®
UPP
290 User Manual 1411.1055.32 ─ 10
Note: When switching on the Z-sweep, the Sweep Graph Config panel is switched
over to Multi Scan, provided the "X-Source " of the respective window is set to Sweep.
At the same time, the number of points on the z-axis (20 maximum) is copied to the
Sweep Graph Config panel as "History" if it is larger than the value specified there.
"Off" Used to deactivate the two-dimensional sweep (switch-over to a one-
dimensional sweep).
"Voltage" Used to activate the two-dimensional sweep and select the level var-
iation as the second sweep parameter. Which signal parameter is
actually swept (the level of a single sine-wave line or the total level of
a multi-tone signal) depends on the respective generator function.
"Frequency" Used to activate the two-dimensional sweep and select the frequency
variation as the second sweep parameter. Not possible for noise sig-
nals and multi-tone signals. Which signal parameter is actually swept
(the frequency of a single sine-wave line or the center frequency of a
two-tone signal) depends on the respective generator function.
"Phase" Used to activate a two-dimensional sweep and select phase variation
as the second sweep parameter. Only possible for stereo signal.
Remote command:
SOURce:SWEep:ZAXis
on page 720
5.9.4 Automatic Sweep
With automatic sweeps, the sweep stepping is performed automatically when a mea-
surement has been completed (synchronous sweep) or when a definable dwell time
has expired (time-triggered sweep, dwell sweep). After [START ], the sweep runs con-
tinuously without further user input (for one-dimensional continuous sweeps), for
[SINGLE ] sweeps until the last sweep point is reached.
Synchronous sweep ensures that sweep stepping is performed when the analyzer has
carried out all the required measurements. At the same time it ensures the highest
possible sweep speed, since the next sweep point is set as soon as measurements
have finished.
Time-triggered sweep is only worthwhile in exceptional cases:
●
When the analyzer is not in use.
●
When the analyzer is actually being used, but the intention is for sweep stepping to
be performed independently of measurement time. However, the chosen dwell time
must be long enough for all measurements to have been completed before the
dwell time expires.
If you want to also generate valid measured values during a time-triggered sweep, we
recommend selecting the settings in the analyzer to eliminate the possibility of unex-
pectedly prolonging the measuring period (e.g. by disabling Settling, disabling the auto-
ranger in the analog analyzer, selecting a fixed measuring time).
Sweeps