GUIDE TO INSTALLATION AND OPERATION
HCO-1822 |
13
Video – Timing Error
This error is generated if the timing offset between the output signal
and the video input is greater than 2 lines.
•
This alarm is always enabled, but is not a switch condition for
either of the inputs.
The LED color is not configurable for this alarm.
Video – Black Detect
This error detects the presence of a continuous black signal for a
period of time; the error is flagged only when the time duration
criterion has been satisfied.
This error can be Enabled using the checkbox, and the level set to 1,
2 or OFF.
The user sets the detection parameters for this error using two
sliders:
•
Threshold (mV) – sets the signal level below which Black will be
considered to have been detected.
•
Set Duration (sec) – sets the time interval over which Black
must be continuously detected before the error is flagged. An
additional delay of 0.5 sec is included to prevent switching
when there are nearly-coincident errors at the two inputs.
•
Clear Duration (sec) – sets the time interval during which a non-
black signal must be continuously detected before a previously-
flagged Black error will be cleared.
Use the
LED Color
pulldown to choose the color that will be displayed
by the status LED on the card edge when a Black Detect error is
detected. Choices are:
•
Green, Yellow, Red, Flashing Red
.
Figure 3.12 Timing Error alarm Config.
Figure 3.13 Black Detect alarm Config.
