GUIDE TO INSTALLATION AND OPERATION
20
| HCO-3901
•
Example (a) shows the supported input timing window for a user-programmed output timing of +1 line. In order for
the HCO-3901 to guarantee no output timing errors, the input signal must be phased to within -1 line of the
reference signal and +1 line – 12.3
µ
s (SD) of the reference signal.
•
Example (b) shows the supported input timing window for a user-programmed output timing of +½ line. In order
for the HCO-3901 to guarantee no output timing errors, the input signal must be phased to within -1½ line of the
reference signal and +½ line – 12.3
µ
s (SD) of the reference signal.
Notice for both examples, that the size of the supported input range is 2 lines – 12.3
µ
s (SD) and 2 lines – 4.5
µ
s (HD).
Reference
Supported input range
Output timing
1H
1H
1H - 12.3us (SD)
1H - 4.5us (HD)
Reference
Supported input range
Output timing
½H
½H - 12.3us (SD)
½H - 4.5us (HD)
1½H
(a) Output timing = +1H
(b) Output timing = +1/2H
Figure 3.19 Output timing examples
The graphic and the text at the top of the panel show the
timing of the two inputs with respect to the reference. Input
timing measurements are shown above (Input 1) and below
(Input 2) the user-programmed output timing (shown in blue
and set using the pulldown below the graphic). If the
measured input timing respects the supported input window,
this measurement will remain green. If not, the measurement
will turn red.
Output Timing
Use the
Vertical
pulldown to offset the output from the
reference by a number of video lines.
Figure 3.20 Timing panel
