Videotek VTM-2000 Specifications download pdf (Page 78)

General Operation

VTM Series Installation and Operation Handbook

3-40

RGB Gamut Display

When setting the upper and lower limits, the upper and lower gamut rings represent the

threshold values. Set the threshold in the VIDEO ALARMS DIGITAL\DIGITAL

GAMUT\RGB (UPPER/LOWER)\THRESHOLD menu to move to gamut rings. The

RGB Gamut Display, shown in Figure 3-34 and described in Table 3-21, is similar to

the Composite Gamut Display. The RGB Gamut vector displays video amplitudes

(which are in mV) in a polar format to represent color information. The rings turn red

when the alarm is enabled and the values exceed the threshold setting.

Each R, G, and B pixel is plotted using amplitude and phase. The amplitude is derived

from the R, G, B component. The phase is derived from the C

information of the

digital signal. The pixels can be plotted as a single color or as each component color

(see the Gamut Setup menu in Section 4). Unlike the composite Gamut vector, which

plots two points per pixel, the RGB Gamut vector plots three points. Also, signals with

no color content are displayed on a separate bar graph labeled Mono.

The RGB graticule is nearly identical to the composite graticule. The only differences

are:

• Amplitudes are displayed in mV rather than IRE or UNITS.

• The radials representing color vectors are 60° apart since they are displayed in a

component color space.

• Mono bar graph is for monochrome.

NOTE: There is an alarm persistence of two seconds associated with any alarm indication. After an

alarm has cleared, two seconds will pass before the gamut indicator returns to normal.

Figure 3-34. Component Gamut Vector Display Graticule Markings

1 2 ... 73 74 75 76 77 78 79 80 81 82 83 ... 239 240

No comments

Videotek VTM-2000 Specifications Page 78