VISTEK V1667, V1667/SY & V1667/SY-VHS
12-bit pal/ntsc to sdi adaptive
comb filter decoder
HU-V1667&SY&SY-VHS
11
5.
TIMING PAGE (FRAME SYNCHRONISER)
See Section
8.3 VHS Input Option
for a description of the VHS decoding option.
5.1
Timing Page Entry
Press the Select button and hold in, followed by the Down (
▼
) button. Entry to the Timing Page will occur
immediately, and will be indicated by the
Tim
pair of LEDs (PAL M and 443) flashing simultaneously.
Note: The Timing Page may only be accessed if there is a Frame Synchroniser Module fitted to the card.
5.2
Timing Parameter Selection and Adjustment
There are 4 adjustable parameters
defined in the Timing Page. These are defined in the table below:
Parameter
A
V Timing Offset
B
H Timing Offset
C
Sync Fail Mode
D
Minimum delay
E
Timing Reset
Selection of the parameter to be adjusted is made by repeatedly pressing the
Select
button until the relevant
green parameter LED is illuminated. Then use the Up (
▲
) and Down (
▼
) buttons to adjust the chosen
parameter as defined below.
To reset the chosen parameter to its calibration position depress the Up (
▲
) and Down (
▼
) buttons
simultaneously.
The output of the decoder is vertically co-timed to the reference input when
V Timing Offset
is in the Cal.
position (Green Cal. LED illuminated). If required the output may be advanced or delayed with respect to the
reference by a maximum of 127 lines.
V Timing Offset
Max
+127 lines
Cal.
0 lines
Resolution
1 line
Min
- 127 lines
The output of the decoder is horizontally co-timed to the reference input when
H Timing Offset
is in the Cal.
position (Green Cal. LED illuminated). If required the output may be advanced or delayed with respect to the
reference by a maximum of + 1/2 line.
H Timing Offset
Max
+ 1/2 line
Cal.
0 line
Resolution
37 ns
Min
- 1/2 line
