Screens

Oscilloscope, Trigger Controls

2. Auto/Norm

Auto automatically triggers a sweep if a triggering signal is not detected within

 

 

~50 ms of the end of the previous sweep in Cont triggering mode.

 

 

Norm requires a specific triggering signal before triggering can occur.

3.

Controls

This field selects the set of oscilloscope controls.

 

 

Choices

Main

 

 

 

 

Trigger

 

 

 

 

Marker

4.

Cont/Single

This field specifies how measurements are armed to accept a trigger.

 

 

If Cont is selected, the oscilloscope is continuously armed to accept a sweep trigger.

 

 

If Single is selected, the oscilloscope is armed each time Reset is selected.

5.

Level (div)

This field sets the trigger level when the Scope Lvl is the trigger source. The

 

 

trigger level is indicated by small pointers that appear on each side of the graticule.

 

 

The units are vertical divisions.

6. Marker

This field displays the signal level at the current marker position. The units-of-

 

 

measure for this field are determined by the AF Anl In selection.

 

 

See Also

Keys: ON/OFF, HI LIMIT, LO LIMIT, REF SET, AVG, Units

7.

Meas Reset

Selecting Meas Reset will erase any accumulated measurements used for calculating

 

 

a final result, and re-start the measurement process for the following functions:

 

 

HI LIMIT

 

 

 

LO LIMIT

 

 

 

AVG

 

 

 

See Also

Keys: HI LIMIT, LO LIMIT, AVG

8.

Pre-Trig

This field specifies the number of horizontal divisions to be displayed previous to

 

 

the trigger point. The trigger point is indicated by small pointers that appear at the

 

 

top and bottom of the graticule.

9.

Pos/Neg

This field specifies whether triggering occurs on the trigger signal’s positive-going

 

 

(Pos), or negative-going (Neg) slope.

4-78

Page 184
Image 184
Agilent Technologies S GSM, 8922M manual Auto/Norm, Cont/Single, Level div, Pre-Trig, Pos/Neg