FS1-X v1.1
www.aja.com
16
It is also recommended to use an interlaced video reference when the output signal is
interlaced, to ensure downstream equipment can process the interlaced video properly.
Progressive video output can safely use either an interlaced or progressive reference
signal.
1 Channel vs.
2 Channel FS1-X
Operation
The FS1-X has two modes of operation: 1 Channel mode and 2 Channel mode.
1 Channel mode is available when the FRC option is present and enabled. In this mode,
the full range of frame rate conversions are available using Video Processor 1. Video
Processor 2 is disabled in this mode and reports no output, although a black video signal
is generated if Video Processor 2 is routed to an output. Any embedded audio routed to a
Video Processor 2 output will also be passed along with that black video signal.
2 Channel mode is available when the FRC is absent or has been disabled. In 2 Channel
mode frame rate conversions within the same frame rate family are supported on Video
Processor 1, and Video Processor 2 is available for use. For example, Video Processor 2 can
be used to pass an unprocessed alternative version of the incoming video. Select the
same input port used by Video Processor 1 on Video Processor 2 (with the VIDEO PROC,
Video 2 Input menu), and route that video to a different output port by selecting that
output (with the VIDEO OUTPUT menu) and assigning Video Processor 2 to that port.
Video Processor 2 does not perform conversion, so for most ports the Video Processor 2
output video will match its input. However, Video Processor 2 video can be routed to the
composite Video Output for downconversion. The composite Video Output port has a
separate dedicated Downconverter so it can always display SD video even if it is selected
to output a Video Processor that is configured for HD.
Sidebar Video
Keying
The FS1-X can be configured to perform sidebar keying (useful when converting
between HD and SD with different image aspect ratios). Sidebar keying black or matte is
always available. It is also possible to sidebar key a video signal from Video Processor 2
under the following conditions:
• The FRC option is disabled or not present (FS1-X is operating in 2 Channel mode).
• The Video Processor 2 video input signal format exactly matches the Video Processor 1
output format.
• The H and V Output timing settings of both Video Processor 1 and 2 are identical.
• The FS1-X reference being used is compatible with the Video Processor 2 input signal.
Retained Settings
The FS1-X stores the current value of each operational parameter in Flash memory so
that the system returns to the same state after a power cycle.
The FS1-X also stores independent values for many settings, so that if the unit is
configured for one operation, changed to a different operation, and then returned to
that prior operation, the settings for that prior operation are restored.
For example, changing the Video Input selection automatically selects new values for
Proc Amp parameters and RGB Proc Amp parameters. This is referred to as Source
Memory. Each video source remembers its own Proc Amp settings.
Similarly, changing the Output Format selection automatically selects new values for H &
V timing parameters. This is referred to as Output Timing Memory. Each Output Format
mode remembers its own H & V timing settings.
