Setting Trigger - Viavi SPA06MA-O R005 User Manual

Table 7
Parameter
Period Time
Period Type
Manual/Standard
Standard Signal

Setting trigger

If you have to perform measurements according to certain signal conditions, you can
use a trigger. A trigger responds to certain events. When a trigger source other than
Free, the Spectrum Analyzer starts to sweep only when the selected trigger conditions
are met. The trigger can be generated either externally or internally.
Table 8
Table 8
Parameter
Free
Internal
External
GNSS
Video
April 2021
Sweep functions
Definition
Enabled when you select Zero Span. Tap to set Period Time
using the on-screen keyboard.
Access: Menu > Sweep > Period Time
Enabled when you select Zero Span. Tap to switch Period
Type to Manual or Standard.
Access: Menu > Sweep > Period Type Manual/Standard
Enabled when you select Zero Span. Tap to select Standard
Signal from: GSM, WCDMA, LTE, EV-DO, TD-SCDMA, or
WiMAX.
Access: Menu > Sweep > Standard Signal
describes each function.
Trigger functions
Description
Select Free to start a new sweep immediately after the cur-
rent sweep ends. This is the default state of the Spectrum
Analyzer module.
Access: Menu > Trigger > Free
Select Internal to start a sweep using the internal reference
clock and creating a trigger.
Access: Menu > Trigger > Internal
Select External to start a sweep based on the external input
trigger.
Access: Menu > Trigger > External
If you use a GNSS receiver while performing measurements
on a base station, you can synchronize the sweep via the
GNSS receiver.
Access: Menu > Trigger > GNSS
A sweep starts when the video voltage exceeds a particular
level. The video trigger is only available in the time domain
(when it is Zero Span = 0).
SPA06MA-O User's Guide
22145360, R005
Chapter 2 Using Spectrum Analyzer
Setting trigger
Page 15