Tektronix WCA200A, User Manual

Page: 273 / 454

WCA230A & WCA280A User Manual
3- 147
Trigger
Triggers determine when the analyzer stops acquiring an input signal and
displays measurement results. To properly acquire data that you want to measure,
you need to set up the trigger conditions. This section describes the following
trigger parameters:
H
Mode: Selects free run or triggered acquisition.
H
Repeat: Determines whether to acquire data continuously or singly.
H
Source: Selects a trigger signal source.
H
Level: Sets a trigger level.
H
Slope:
Selects the rising or falling edge of a trigger signal.
H
Position:
Specifies a trigger position.
You must create a trigger mask when triggering in the frequency domain with
Option 02. Refer to page 3--165 for creating a trigger mask.
A “T” mark (with “O” optionally) indicating a trigger point is displayed on the
overview in the Demod and Time modes. Refer to page 3--171 for information
about displaying the trigger point.
NOTE
. The trigger functions vary according to the product serial numbers
(the serial number is labeled on the bottom-right corner of the rear panel).
The following descriptions are marked with the appropriate serial number
if necessary.