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FUNCTION REFERENCE

SCREEN CONTROLS AND GRATICULE

Description:

The screen controls are located to the left of the CRT viewing area.

Brightness of trace(s) and text can be adjusted separately with the TRACE INTENSITY and TEXT INTENSITY controls. Intensity of the trace(s) can also be determined by a voltage applied to the rear panel socket Z MOD. Refer to ’Characteristics’ Chapter 1 of the Reference Manual for input amplitudes.

The FOCUS control is used to optimize display sharpness.

A graticule is a provided with 1cm x 1cm divisions. Each vertical centimeter equals the indicated channel sensitivity. A horizontal centimeter equals the indicated timebase setting. The graticule has 0, 10, 90, and 100 % lines that can be used for risetime measurements. For these, the signal peaks are exactly positioned on the 0 and 100 % lines. The risetime of the pulse is readout between the 10 and 90 % lines as shown in the following figure. Intensity of graticule illumination is controlled with the GRATICULE ILLUMINATION control.

Trace alignment is done with the screwdriver operated TRACE ROTATION control.

TRACE

BRILLIANCE

TEXT

BRILLIANCE

Screen controls and function of

TRACE ROTATION.

DISPLAY

SHARPNESS

GRATICULE

ILLUMINATION

Rise time measurement using the graticule.

TRACE

 

 

 

 

INTENSITY

 

 

 

 

TEXT

 

 

 

 

INTENSITY

 

 

 

 

 

100

 

 

 

 

90

 

 

 

TRACE

 

 

 

 

ROTATION

 

 

 

 

FOCUS

{

 

 

 

 

10

 

 

 

 

0%

 

 

 

GRATICULE

CH1

 

 

 

ILLUMINATION

20mV

MTB

0.2ms

 

 

 

 

}

 

 

 

 

MAT4216

 

 

 

 

9303

100

 

 

 

 

90

 

 

 

 

 

 

 

RISE

 

10

 

 

TIME

 

 

 

 

 

0%

 

 

 

 

MAT4217

Page 182
Image 182
Fluke PM3370B user manual Screen Controls and Graticule, Screen controls and function, Trace Rotation