Monitor Audio Vector User Manual download pdf (Page 59)

WFM 90 & WFM 91 User Manual

3–9

Making Measurements

This section contains descriptions of the different graticules provided

with the WFM 90 and WFM 91 and methods for using them to

perform basics signal measurements.

This monitor uses a proprietary rasterizer to display the graticules.

The internal graticule scales are on the same plane as the CRT

phosphor, eliminating parallax errors.

Waveform Graticule

There are two versions of the Waveform display mode graticule,

illustrated in Figure 3–1 and Figure 3–2:

 NTSC composite video graticule (WFM90 only)

 PAL (CCIR) composite video graticule (WFM91 only)

Horizontal Scale

The 0 IRE (0.3 V PAL) graticule line is divided into 12 major

divisions. Each division represents a unit of time determined by the

SWEEP and MAG settings. Line-sweep rates appear in the on-screen

readout, and are as follows:

SWEEP

MAG ONTIME/DIV

1H (1LINE)

2H (2LINE)

5S/D

10S/Div 1S/Div

0.5S/Div

2F (two field) sweep with MAG on, the signal is magnified by X20,

and the entire vertical interval can be viewed.

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Monitor Audio Vector User Manual Page 59