Operation Manual

© Calibre UK Limited Issue 2.00 30 March 2012, W: www.calibreuk.com
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3.5.5. I/O Lock
Settings: Off, Source, Genlock, Auto
If I/O Lock is switched off the output is run with a fixed refresh rate determined by the frame rate
setting, which deviates from the input refresh rate, even if both are nominally at the same rate. This
causes occasional frame dropping or repeat.
If I/O Lock is set to Source the output refresh rate is following the input video refresh rate if locking is
possible. If I/O Lock is set to Genlock the output refresh rate is following the vertical sync of an
externally provided signal (GENLOCK BNC) if locking is possible. Locking is achieved by modulating
the output clock and works if input and output refresh rate are nominally at the same rate, e.g. when
frame rate is set to 60Hz and the video input is also 60Hz. If e.g. the video input rate is 50 Hz and the
Frame rate is set to 60Hz, the output will enter free run mode. When Frame Rate is set to Auto the
matiching frame rate is chosen.
When I/O lock is set to Auto and a Genlock source is present to the GENLOCK BNC. If genlocking is
not achievable, locking to the video source frame rate is tried. If that is not possible the output is
running in free-run mode.
The status line of the OSD window under Sync Mode indicates if the output signal is locked to the input
signal (I/O Locked or Genlocked) or in free run mode (Free Run).
3.5.6. Native Color Temp
Settings: 5500, 6500, 7500, 9300, 10000
Native Color Temp allows the user to select from pre-configured color temperatures to match the
display. If both Native Color Temp set here in the Output menu and Color Temp set in the Color menu
are set to the same value, no conversion is performed.
3.5.7. Output Gamma
Settings: 1.0 to 3.0 in steps of 0.1
Output gamma allows to re-gamma video signals with pre-configured gamma values to match the
display. Input gamma and output gamma both default to 2.2. If they are both set to the same value,
there is no effect on the image.
Note: If e.g. an adjustment to reduce the level of red in the image is required, select a higher number
for the (input) Color Temp in the Color menu, or a lower number for the Native Color Temp in the
Output menu.