Tektronix 1760 Manual de usuario descargar pdf (Pagina 107)

Basic Measurements

1760 Series Component Waveform/Vector Monitor User Manual

4-7

NTSC

The chrominance vectors terminate in a system of graticule

targets consisting of two boxes (a small box inside a large

box). A sample target is shown in Figure 4-4. The dimen-

sions of the large boxes represent ±10° centered on the ex-

act chrominance phase, and ±20% of chrominance

amplitude centered around standard amplitude. The dimen-

sions of the smaller boxes represent ±2.5° and ±2.5 IRE.

Figure 4-4. Vector targets --- NTSC values (PAL values in parentheses).

PAL

For the 1761 gra ticule, each PAL chrominance vector related

to the +V burst terminates in targets consisting of two boxes

(a small box inside a large box). See Figure 4-2. The large

box represents ±10° centered on the exact chrominance

phase and ±20% of chrominance amplitude centered around

standard amplitude. The dimensions of the inner target rep-

resent ±3° and ±5% of chromina nce amplitude; the vectors

associated with the --V burst terminate in the smaller targets.

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Tektronix 1760 Manual de usuario Pagina 107