R&S ZVB - Page 418

R&S
®
ZVA / R&S
®
ZVB / R&S
®
ZVT GUI Reference
Channel Menu
Operating Manual 1145.1084.12 – 30 403
All partial measurements of each sweep point are carried out one after another. Source port
specific trigger delays are supported.
On R&S ZVA67 analyzers, the alternating sweep mode speeds up all measurements which require
several partial measurements.
The following measurement modes are not compatible with alternate sweep mode:
 True Differential Mode
 Defined Coherence Mode
 Mixer measurements with ALC enabled at the driving port
 Arbitrary frequency conversion (ARB) measurements with ALC enabled at the driving port
 Intermodulation Measurements with two-tone output at Ext. Dev. and ALC enabled at the upper or
lower tone port
 Measurements with external generator as drive port (e.g. trace "b1G1")
While one of these modes is active, the analyzer firmware automatically switches to normal ("chopped")
mode.
Remote control:
[SENSe<Ch>:]COUPle ALL | NONE
Pulse Generator (R&S ZVA and R&S ZVT)
Turns the pulse generator on or off (with option R&S ZVA-K27). The pulse generator provides two
independent control signals at the CASCADE output connector on the rear panel of the network analyzer.
The signals can be used to control a R&S ZVAX24 or R&S ZVAX-TRM Extension Unit equipped with
pulse modulator option.
The pulse generator signals are configured using the Define Pulse Generator dialog.
Pulse generator signals
Pulse generator signals consist of rectangular pulses which are repeated periodically. The signals serve
as modulation signals for pulse modulators: During the high signal periods, the pulse modulator generates
an RF signal, during the low signal periods, the RF signal is switched off. The R&S ZVA provides two
different pulsed signals:
 The Gen 1 signal (the actual "pulse generator signal") consists of a single pulse or a pulse train
with selectable period. A pulse train is a series of pulses with individual timing and width. The
pulse generator signal is not used internally.
 The Gen 2 signal ("sync signal") is a single pulse which is repeated after the pulse period. The
sync signal can be used as a trigger signal for pulsed measurements but also available as a
modulation signal. In Chopped Pulse Profile mode, it is used chop the measured RF signal into
short measurement intervals.
The pulse period of the pulse generator and sync signals are identical. An example for a pulse generator
signal consisting of a pulse train (Gen1) and a sync signal (Gen 2) is shown below.