Tektronix 1760 Uživatelský manuál stáhnout pdf (Strana 103)

Basic Measurements

1760 Series Component Waveform/Vector Monitor User Manual

4-3

PAL Vertical Scale

The PAL graticule is shown in Figure 4-2. On the left side of

the PAL graticule i s a voltage scale that extends from 0 to

1.2 V. The graticules are also marked for K--Factor tol er-

ances and linear-distortion measurements. These measure-

ments will be described later in this section.

Component signals can be centered on the .35 V line.

KFactor

Audio

100% White

Level

Baseline

Sync Tip

Figure 4-2. PAL waveform/vector graticule.

Dual-Standard Vertical Scale

The dual-standard graticule, shown in Figure 4-3, combines

the two previous scales. The 525/60 scal e (NTSC) is on the

left side, a nd the 625/50 scale (PAL) is on the right. The

divisions represent 10 IRE in amplitude (70 mV for PAL).

The instrument gain is automatically adjusted for the partic-

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Tektronix 1760 Uživatelský manuál Strana 103