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7ghz spectrum analyzer operation manual ⎯ ⎯ 74 – GW Instek GSP-827 User Manual User Manual

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2.7GHz Spectrum Analyzer Operation Manual

74

8.3.2 Trigger

Trigger

is the feature that the measurement starts when the trigger condition is met. In other

words, even in the trigger mode, the measurement sweep will not start until the trigger
condition is match. There are two trigger modes, Single and Continuous. As long as the
trigger condition is met, the Single mode only performs one measurement sweep while the
Continuous

mode performs the sweep continuously. Before the trigger condition is met, the

sweep will not work.

There are two sources of trigger condition, Video Level and External trigger from rear
panel. Video Level means the level of display. The input signal has to reach the video level
to trigger the measurement sweep. The default of trigger frequency is Center Frequency. It
can be changed with Trigger Freq setting.

Another source of trigger is from External Input on the rear panel. A 0 to 5V rising edge
will trigger the sweep in external trigger mode.

Trigger delay

allows sweep happens later than the condition is match.

Activate Free Run to stop trigger function.

F1

F2

F3

F4

F5

F6

Center

Start

stop

Step

Free

Run

Exter

Singl

0

1

2

3

7

6

5

4

8

9

.

-

Trigger

Video

Level

Trigger

Delay

Trigger

Freq