CMN-91
Installation and Operation Manual
Alarm Descriptions
© 2016 Imagine Communications Corp. Proprietary and Confidential.
Revision D | Page 142
LTC Time Code Framing: The Time Code Framing alarm occurs when the alignment of the start of
LTC (ANSI/SMPTE 12M 1999) exceeds the range limit for a period in excess of the duration setting.
LTC Time Code Continuity: The Time Code Continuity alarm occurs when a break or interruption in
the time code count occurs.
LTC/DVITC Compare: The LTC/DVITC alarm occurs when LTC and DVITC are compared and differ
beyond the threshold (1 to 30 frames) selection for a period in excess of the duration setting.
DVITC Loss of Time Code: The DVITC Loss of Time Code alarm occurs when no DVITC Time Code in
the video signal is detected for a period in excess of the duration setting.
D-VITC Line: The D-VITC Line alarm is used to select the line number on which the D-VITC time code
is detected for the "D-VITC Continuity" and "D-VITC CRC" fields. When time code is not detected on
the selected line number, the alarm activates.
D-VITC Continuity: The D-VITC Continuity alarm occurs when a break or interruption in the digital
vertical interval time code (VITC) frames occur for a period in excess of the duration setting.
D-VITC CRC: The D-VITC CRC alarm occurs when the cyclic redundancy check (CRC) within the digital
vertical interval time code field does not correlate with the calculated CRC for a period in excess of
the duration setting.
GPI Alarms Setup Menu
Menu Selections
GPI Alarms Setup Menu
Selection Option
Selection Option
GPI 1 Alarm
Enable*
Disable
GPI 2 Alarm
Enable*
Disable
GPI 3 Alarm
Enable*
Disable
GPI 4 Alarm
Enable*
Disable
Menu Selection Descriptions
The input GPIs have selectable functions. There are selectable functions to allow external control of the
unit or to show an onscreen alarm.