Grass Valley DEC-1023 - Manual (Page 20)

GUIDE TO INSTALLATION AND OPERATION
16 | DEC-1023
flagged (causing the status LED to change color and an error message to be sent out on the frame’s
interface) until the OCCURRENCE / DETECTION WINDOW conditions have been satisfied.
(Range: 0 to 90 seconds)
• OCCURRENCE: the number of times that a detected error is allowed to occur in a specified
DETECTION WINDOW before an error flag is set, and the error is reported (status LED changes color,
and message sent on the interface)
(Range: 1 to 16)
• INTERVAL: the time duration during which errors are counted to determine if the error flag should be
set. This is a moving window, e.g. the previous 2 minutes, and only errors falling within that window are
counted.
(Range: 1 min to 24 hours)
In most cases, all three conditions are defined:
In some cases, a different set of controls is available.
The following chart shows the controls for each error type..
White Max: Detects whether the maximum
luminance level of the input video signal is too high
by verifying if it does not rise above a specified
threshold.
ENABLE: check to enable this test.
THRESHOLD: set the level (in IRE or mV) above
which this condition will be flagged
Luma Min expected: Detects whether the video
signal contains some nearly-black information by
verifying if the Luma component of the video signal
includes information below a specified threshold.
ENABLE: check to enable this test.
THRESHOLD set the level (in IRE or mV) below
which this condition will be flagged
Luma Max expected: Detects whether the video
signal contains some nearly-white information by
verifying if the Luma component of the video signal
includes information above a specified threshold.
ENABLE: check to enable this test.
THRESHOLD: set the level (in IRE or mV) above
which this condition will be flagged