VNA GUI Reference
R&S
®
ZNL/ZNLE
473
User Manual 1178.5966.02 ─ 07
9.13.2
Mode Tab
Optimizes the measurement process.
9.13.2.1
Controls on the Mode Tab
Figure 9-16: Channel > Mode tab
left = R&S
ZNL
right = R&S
ZNLE
The controls on the "Mode" tab are organized in sections "Driving Mode" and "Image
Suppr." (R&S
ZNL only).
Driving Mode
Determines the order of partial measurements and sweeps.
●
In "Auto" mode, the analyzer optimizes the display update: Fast sweeps are per-
formed in "Alternated" mode, slower sweeps in "Chopped" mode.
●
In "Alternated" mode, a partial measurement is performed at all sweep points (par-
tial sweep) before the hardware settings are changed. The next partial measure-
ment is carried out in an additional sweep.
This mode is usually faster than "Chopped" mode.
●
In "Chopped" mode, the analyzer completes the necessary sequence of partial
measurements at each sweep point and obtains the result (measurement point)
before proceeding to the next sweep point. A trace is obtained from the beginning
of the sweep.
The "Driving Mode" setting is also used during a system error correction. For channels
which require a single partial measurement only, the driving mode settings are equiva-
lent. See also
Chapter 8.1.4.1, "Partial Measurements and Driving Mode"
Remote command:
Image Suppr.
The "Image Suppr." settings define whether the analyzer measures with a local oscilla-
tor frequency LO below or above the RF input frequency. This feature can be used to
Channel Softtool
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Allice Messtechnik GmbH
