Fluke PM3370B Screen Controls and Graticule, Screen controls and function, Trace Rotation

5 - 62 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