CMN-91
Installation and Operation Manual
Operation
© 2016 Imagine Communications Corp. Proprietary and Confidential.
Revision D | Page 74
Field
Identifier
Field Information
Nomenclature
6
Lower luma alarm limit
(Composite only)
Displayed as Lower = xxx yy; xxx is the Luma lower threshold
setting and yy is determined by the format (IRE for NTSC and
Units or mV for PAL)
7
Upper luma alarm limit
(Composite only)
Displayed as Upper = xxx yy; xxx is the Luma upper threshold
setting and yy is determined by the format (IRE for NTSC and
Units or mV for PAL)
8
Luma alarm limit
Displays Luma when Composite is selected; this field is blank
when Single Color or RGB is selected
9
Lower chroma alarm
limit
Displayed as Lower = xxx yy
For RGB xxx is the RGB Gamut lower threshold setting, and yy
as mV
For Composite, xxx is the Peak lower threshold setting
In Composite, yy is determined by the format (IRE for NTSC
and Units or mV for PAL)
10
Upper chroma alarm
limit
Displayed as Upper = xxx yy
For RGB, xxx is the RGB Gamut upper threshold setting and yy
is shown as mV
For Composite, xxx is the Peak upper threshold setting In
Composite, yy is determined by the format (IRE for NTSC and
Units or mV for PAL)
11
Chroma alarm limits
Displayed as RGB (for RGB or Single Color) and PEAK (for
Composite)
12
Luma/Mono bar
graticule
Shows the Luma/Mono bar graticule
13
Zoom
Zoom when enabled; blank when disabled
14
Gamut Graticule
Composite or RGB Gamut graticule
Composite Gamut
The graticule for the composite gamut vector, as shown in and described in , is two concentric circles
with other identifiers. When setting the upper and lower limits, the upper and lower gamut rings
represent the values set from the threshold values of the appropriate format.
The outer circle (the upper gamut alarm limit) represents the highest allowable amplitude in standard
composite units (that is, IRE for NTSC and units for PAL). The inner circle (the lower gamut alarm limit)
represents the lowest allowable amplitude. The rings turn red when the alarm is enabled and the values
exceed the threshold setting.
To move the gamut rings, set the ALARMS
VIDEO
GAMUT
PEAK GAMUT UPPER (or LOWER)
THRESHOLD 525/59.94 or THRESHOLD 625/50 selection option.