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Locked Outputs
720p 23.98Hz
1080pSF 24Hz CL
1080pSF 23.98Hz
480i 59.94Hz
576i 50Hz CL
Notes on Using the Matrix
When using Table 2, keep in mind the following definitions.
• Genlock — Occurs when the reference and the output frame/field rates are compatible.
• Field Lock (F) — Occurs when the reference and the output frame/field rates are compatible but
the reference is a progressive format and the output is an interlaced format.
• Clock Lock (CL) — Occurs when there is a fixed relationship between the reference and the
output clock rates but when there is no direct relationship between the reference and output
frame rates.
Reference Signals
The SPG-8260(-W) can lock to one of the two frame references, the REF IN BNC on the rear module,
or free-run using the card internal oscillator.
Notice
— The SPG-8260-W outputs are 5V maximum (TTL levels).
Keep the following in mind:
• Switching between references may cause the outputs to glitch.
• When the selected reference is lost, the card switches to its internal oscillator.
• When the selected reference returns, the card locks back to the input reference.
• When running off the internal oscillator, the card ignores any signal on the other reference
inputs.
• When running off the internal oscillator and the outputs are set to the same NTSC or PAL
standard, the outputs will be color framed to each other.
• The card can operate without a reference by switching to the internal reference.
When using the internal reference, the outputs should be no more than +/- 1ppm from the
nominal frequency, with a maximum drift of +/- 4.6ppm after 10 years.
Color Framing
When a NTSC or PAL reference is connected to the card, and one or more of the outputs are set to
the same standard as the reference, the color frame of the video outputs will match the reference.
26 • Configuration
Table 2 Genlock, Field Lock, and Clock Lock Matrix
CL
CL
CL CL
CL
CL
F
CL
Inputs
CL
CL
CL
CL
F
F
CL
CL
CL
CL
CL
F
SPG-8260(-W) User Guide (v5.0)
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