CMN-91
Installation and Operation Manual
Alarm Descriptions
© 2016 Imagine Communications Corp. Proprietary and Confidential.
Revision D | Page 136
Selection
Selection Option
Selection Option
Selection Option
Picture Shift
Enable
Threshold
0 to 350 mV (2 mV*)
Vertical
1 to 200 lines (2 lines*)
Horizontal
1 to 300 pixels (2 pixels*)
Timing
Enable
Lines
0 to 50 lines (1 line*)
Microseconds
1 to 64 µs (1 µs*)
Duration
0 to 60 seconds (2
seconds*)
Menu Selection Descriptions
Format Change: The Format Change alarm is used to indicate that the incoming video format has
changed.
Payload ID Mismatch: The Payload Identifier Mismatch alarm is used to indicate that the payload
indicated in a SMPTE 352M ancillary data packet does not match the detected input format such as
HD/SD and frame rate.
Loss of Carrier: The Loss of Carrier alarm occurs when there is no Timing Reference Signal (TRS)
detected.
Loss of Reference: The Loss of Reference alarm occurs when no sync signal is detected in the
external reference for a period in excess of the duration setting. (For more information necessary to
select the appropriate external reference, see page 113.)
Loss of Active Video: The Loss of Active Video occurs when active video falls below the adjustable
threshold for a period in excess of the duration setting.
Loss of Payload ID: The Loss of Payload ID alarm is used to indicate when the SMPTE 352M Video
Payload ID ancillary data packet is not detected in the received data stream for a period in excess of
the duration setting.
Gamut: Gamut alarms are used to indicate when components of an RGB, Luma, or peak signal fall
outside upper or lower preset limits.
RGB Gamut Upper/Lower: The RGB Upper and Lower alarm occurs when any component of the
transcoded RGB signal falls outside the upper or lower limits for a period in excess of the
duration setting. The Sensitivity can be increased to provide immunity to fast transcoding spikes.
Luminance Gamut Upper/Lower: The Luminance Upper and Lower alarms scan the composite
encoded signal derived from the selected digital input. The alarms occur when the luminance
video falls outside the adjustable limits for a period in excess of the duration setting. The
Sensitivity can be increased to provide immunity to fast noise spikes.
Peak Gamut Upper/Lower: The Peak Upper and Lower alarms scan the composite encoded
signal derived from the selected digital input. The alarm occurs when the peak video falls
outside the adjustable limits for a period in excess of the duration setting. The Sensitivity can be
increased to provide immunity to fast noise spikes.
