Rohde & Schwarz ESW Series, User Manual

Page: 183 / 759

Common Measurement Settings
R&S
®
ESW
183 User Manual 1177.6298.02 ─ 08
10.10 Trigger Configuration
Triggering means to capture the interesting part of the signal. Choosing the right trigger
type and configuring all trigger settings correctly allows you to detect various incidents
in your signals.
● Basics on Triggered Measurements ..................................................................... 183
● Triggering Measurements ..................................................................................... 186
10.10.1 Basics on Triggered Measurements
● Trigger Offset ........................................................................................................ 183
● Gated Measurements ............................................................................................183
10.10.1.1 Trigger Offset
An offset can be defined to delay the measurement after the trigger event, or to include
data before the actual trigger event in time domain measurements (pre-trigger offset).
Pre-trigger offsets are possible because the R&S
ESW captures data continuously in
the time domain, even before the trigger occurs.
See "Trigger Offset" on page 188.
10.10.1.2 Gated Measurements
Like a gate provides an opening in a fence, a gated measurement lets data from the
input signal pass in defined areas only. The
gate controls exactly when data is included
in the measurement results and when not. The gate is opened by the trigger source,
which is also the gate source.
Gates can be used in two different modes:
●
Level: The gate opens and the measurement starts when a defined level in the
gate source is exceeded and stops when the gate source drops below the "Gate
Level".
Using a pulsed gate signal in level mode, the following behavior can be achieved:
When the gate source signal is active, the input signal data is collected; when the
gate signal is inactive, the input signal is ignored.
●
Edge: The gate opens and the measurement starts when a defined level in the
gate source is exceeded and stops when the defined "Gate Length" is reached.
Additionally, a delay time can be defined so that the first few measurement points after
the gate opening are ignored.
Trigger Configuration