Vector Network Analysis
R&S
®
ZNH
163
User Manual 1334.5985.02 ─ 02
8.3.4.4
Setting the Triggering Measurements
In the default state, the R&S
ZNH starts a measurement on completion of the previous
measurement ("Free Run" measurements).
However, for measurements perform under certain signal conditions, you can use the
triggering function. A trigger responds to certain events. If a trigger is active, the
R&S
ZNH starts to measure if the trigger conditions are met. The trigger can be gener-
ated either externally or internally.
1. Press the "Trigger" softkey.
The R&S
ZNH opens a submenu to select the trigger source.
● "Free Run": A new sweep starts on completion of the previous sweep. This is
the default state of the R&S
ZNH.
● "External Rise" / "External Fall": A sweep starts on the rising edge ("Rise") or
on the falling edge ("Fall") of an external trigger signal. The external trigger sig-
nal is fed in via the
. The switching threshold is 1.4 V, i.e. a TTL
signal level.
● "Trigger Delay": When applying an external trigger, a delay at the start of the
measurement with respect to the trigger event by entering a delay time. In this
way, a time difference between the trigger event and the measurement can be
included.
The range of the trigger delay is from 0 us to 100 s. The resolution depends on
the subrange.
–
0 ms to 1 ms - 10 us resolution
–
1 ms to 10 ms - 100 us resolution
–
10 ms to 100 ms - 1 ms resolution
–
100 ms to 1 s - 10 ms resolution
–
1 s to 10 s - 100 ms resolution
–
10 s to 100 s - 1 s resolution
2. Select the trigger source you need.
The R&S
ZNH activates the trigger.
8.3.4.5
Selecting the Sweep Mode
The R&S
ZNH provides single sweep and continuous sweep to perform measurement.
For more information, see
Chapter 7.2.6.1, "Selecting the Sweep Mode"
8.4
Analyzing Measurement Results
The following sections describe how you can work with traces and use markers, limit
lines and display line to analyze your measurement result.
Analyzing Measurement Results