Vela CineCast 2000-0422, Installation And User Manual

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Chapter 2 — Overview and Operation 87
0046 Genlock to SDI Timing Adjustment
0046 Genlock to SDI Timing Adjustment
Note that this command is supported on the Models 2000-0422-1 and 2000-
0422-2 only. The command adjusts the relative position of the SDI output to
that of the composite genlock input.
This command only applies to genlock operation. Refer to Genlock command
0016h.
Horizontal Adjustment
Horizontal Adjustment is in terms of 27MHz clock delays (37nS pixel clock). The
Horizontal Adjustment is an 11-bit unsigned delay with valid adjustment ranges of:
NTSC: 0 to 1715 (0 to 63.5µS)
PAL: 0 to 1727 (0 to 64.0µS)
Example settings:
Vertical Adjustment
Vertical Adjustment is -8 lines to +7 lines using a signed 4-bit value. Positive time
values indicate that the SDI output precedes genlock, Negative values indicate
that SDI follows genlock.
Horizontal
Adjustment
Horizontal Offset Time Adjustment
0x000 0 No Adjustment (Power-Up Default)
0x001 1 x 27MHz Clk 37nS
0x002 2 x 27MHz Clks 74nS
0x6B3 1715 x 27MHz Clks 63.5µS (Maximum NTSC Setting)
0x6BF 1727 x 27MHz Clks 64.0µS (Maximum PAL Setting)
Table 2-12.Genlock SDI Timing Adjustment Command Format