Rohde & Schwarz FSV3000, User Manual

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Common measurement settings
R&S
®
FSVA3000/ R&S
®
FSV3000
480 User Manual 1178.8520.02 ─ 08
Filter Bandwidth Filter Type Application
3.75 MHz CFILter
3.84 MHz, a=0.22 RRC W-CDMA 3GPP
4.096 MHz, a=0.22 RRC W-CDMA NTT DOCoMo
5 MHz CFILter
10 MHz CFILter
20 MHz *) CFILter
28 MHz *) CFILter
40 MHz *) CFILter
*) These filters are only available with option R&S FSV3-B8E (Resolution Bandwidths up to 40 MHz).
Filters larger than 10 MHz require an appropriate bandwidth extension option.
6.6 Trigger and gate 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.
Gating allows you to restrict measurement analysis to the important part or parts of the
signal, for example bursts.
● Triggering .............................................................................................................. 480
● Gating ....................................................................................................................492
6.6.1 Triggering
6.6.1.1 Triggered measurements
In a basic measurement with default settings, the sweep is started immediately. How-
ever, sometimes you want the measurement to start only when a specific condition is
fulfilled, for example a signal level is exceeded, or in certain time intervals. For these
cases you can define a trigger for the measurement. In FFT sweep mode, the trigger
defines when the data acquisition starts for the FFT conversion.
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).
For complex tasks, advanced trigger settings are available:
●
Hysteresis to avoid unwanted trigger events caused by noise
●
Holdoff to define exactly which trigger event will cause the trigger in a jittering sig-
nal
Trigger and gate configuration