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2.5
CONNECTING THE ANALOG VIDEO
For proper operation, the input analog video should be timebase corrected.
For simultaneous analog and SDI operation, the video sources must also be
frame-locked.
2.6
CONNECTING THE ENCODER TO AN XDS COMPUTER
INSTALLATION
8083XDS-AD Analog and SD-SDI XDS Encoder
2.5.1
Decoder Outputs (from SDI video path)
A composite monitor inside the XDS encoder provides two composite
DECODER outputs from the SDI video feed. The two identical outputs are
typically connected to video monitors to verify that the XDS information is
being applied correctly. The front panel menus are used to select which
data channel will be decoded (See section 3.2.4)
2.5.2
Composite Analog Video Input
The 8083XDS-AD accepts either an SDI video source in the SDI IN BNC or
a composite analog video source in the ANALOG VIDEO IN BNC or both
sources simultaneously when these are frame-locked together.
The ANALOG VIDEO IN connector accepts either 525 or 625 line
composite analog video. Set the VIDEO TYPE parameter on the front
panel menu to match the video input. (See section 3.2.1 for information on
changing the video type setting). The UPSTREAM SOURCE parameter
should also be changed to match the type of video being input, even if the
upstream video contains no caption data.
The 8083XDS-AD has an LED labeled COMP VIDEO IN. When it is on
steady, there is composite analog video present. When it is flashing, there
is a problem such as incorrect video standard selected, or the video is of
poor quality. When the LED is off, no input SDI video has been detected.
2.5.3
Composite Analog Video Output
The two composite outputs contain the input video with closed caption data
keyed in. The ANALOG BYPASS OUT output is bypass protected in case
of power failure or operator override. Normally this output should be used
for the main program output of the XDS encoder. A second non-bypassed
output (ANALOG PREVIEW OUT) has a built-in caption and XDS decoder
and may be connected for preview applications. When the Bypass relay is
active, this output contains no video signal.
activated on power failure and when the Bypass Relay GPI is closed to
ground. It may also be manually activated using the front panel menus.
Figure 2-3 shows the typical connections required when using the
8083XDS-AD in conjunction with a computer running XDS software.
Revision 1.0.2
The Bypass relay will be
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