Specifying The Trigger Settings; Using Gated Sweep Operation - R&S ESR Series User Manual

®
R&S ESR
6.2.8.2

Specifying the Trigger Settings

1. Press the "Trg/Gate Source" softkey to select the trigger mode (for details see
Gate Source"
2. Press the
3. Press the
teresis
For details on gated sweep operation, see
ation",
6.2.8.3

Using Gated Sweep Operation

By using a gate in sweep mode and stopping the measurement while the gate signal is
inactive, the spectrum for pulsed RF carriers can be displayed without the superposi-
tion of frequency components generated during switching. Similarly, the spectrum can
also be examined for an inactive carrier. The sweep can be controlled by an external
gate or by the internal power trigger.
Gated sweep operation is also possible for span = 0. This enables – e.g. in burst sig-
nals – level variations of individual slots to be displayed versus time.
1. Press the
At the center frequency a transition to zero span is made and the time parameters
gate delay and gate length are displayed as vertical lines to adjust them easily.
When quitting the
desired measurement can be performed with the accurately set gate.
2. Setting the parameters gate delay and gate length highly accurate, press the
Sweep Time
(e.g. one full burst) is displayed.
3. Press the
portion of the signal is shown.
4. Press the
5. If the "Edge" gate mode has been selected, press the
Edge)
signal is shown.
6. Press the
7. Press the
To indicate that a gate is used for the sweep, the enhancement label "GAT" is dis-
played on the screen. This label appears to the right of the window for which the
gate is configured.
User Manual 1175.7068.02 ─ 12
on page 375.
Trg/Gate Level
Trigger Offset softkey to set the trigger offset. In addition, a
and Trigger Holdoff
on page 381.
Gate Settings softkey to define the settings of the gate mode.
Gate Settings
softkey to alter the x-axis in a way that the signal range concerned
Gate Delay softkey to set the sampling time in a way that the desired
Gate Mode (Lvl/Edge)
softkey to set the sampling duration in a way that the desired portion of the
Trg/Gate Polarity
Gated Trigger softkey to activate the gated sweep mode.
softkey to set the trigger level.
can be defined via the corresponding softkeys.
Chapter 6.2.8.3, "Using Gated Sweep Oper-
submenu, the original span is retrieved so the
softkey to set the gate mode.
softkey to set the polarity of the trigger source.
Spectrum Measurements
Configuration
Trigger Hys-
Gate Length (Gate Mode
"Trg/
381