Grass Valley Turbo iDDR v.2.3 - Manual (Page 292)

292 Turbo iDDR User Guide
Appendix C Specifications
Genlock Reference
System Timing
Characteristics Description
Signal Type NTSC/PAL Color Black Composite Analog
Connectors 2 BNC, 75 ohm passive loop through
Color Field Detection, Based on SCH
Phase Correct color framing for signals having an average SCH phase
±40°; Lockup ±10°. Once locked to color field, it will stay
locked over a range of 0
° to ±90°
Burst Frequency Lock Range PAL,
±10 Hz at subcarrier
NTSC,
±20 Hz at subcarrier
Signal Amplitude Lock Range Stays locked to +6 dB and -3 dB
Input Return Loss
≥40 dB to 5 MHz
Unlocked internal clock accuracy a
a.
Internal reference provides accurate free-running timing signals in the absence of genlock reference to
allow asynchronous record and play.
When not locked to a reference, 27Mhz. will be within
±
25PPM
Characteristics Description
a
a. All delay values shown are relative to Black Reference.
Nominal Playback Output Delay Adjustable
(Default: Zero timed to reference)
Output Delay Range
(Independent for each play
channel) Frames – NTSC 0 to +1 frames,
PAL 0 to +3 frames
Lines – NTSC (525 lines) 0 to +524 lines,
PAL (625 lines) 0 to +624 lines.
Samples – NTSC (525 lines) 0 to +1715 clock samples,
PAL (625 lines) 0 to +1727 clock samples.
Analog sub-pixels (SC) b – (analog video only). Range is
slightly more than one sample clock period.
b. Output delay adjustments affect the SDI and composite analog outputs together. The analog sub-pixel
adjustment is only a “fine” trim on the composite output with respect to the current SDI timing.
Nominal E to E Output Delay NA
(E to E is provided for monitoring purposes only, not intended as a
program switch.)