I/O Lock; Native Color Temp; Output Gamma - Optoma HQView-320 Operating Instructions Manual

24Hz input modes will be output at 24Hz if the output resolution is set to either 720p or 1080p and the
Frame Rate setting in the Output Config menu includes 24Hz, otherwise it is displayed at twice the rate
if the Frame Rate setting in the Output Config menu includes 48Hz.
Otherwise a 24Hz input mode is displayed at 60Hz. 48Hz input modes will be output at 48Hz if the
Frame Rate setting in the Output Config menu includes 48Hz.
Otherwise it is displayed at 50Hz.
A 25Hz input mode is output at twice the frame rate 50Hz.
An exception to the 24/25Hz input mode treatment is if the output resolution is set to 480i or 480p. 480i
and 480p are always run at 60Hz output rate.
50Hz input modes are displayed at 50Hz output rate.
The output frame rate can also manually set to 24Hz, 48Hz, 50Hz or 60Hz if possible, i.e. such output
modes are available.
Only 720p and 1080p output modes are available with 24Hz refresh rate.
480i and 480p output modes are only available at 60Hz refresh rate.
For all other modes 48Hz, 50Hz and 60Hz refresh rate is available.
3.5.6.

I/O Lock

Settings: Off, 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 Auto the output refresh rate is following the input video refresh rate 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 matching frame rate is chosen.
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 in free run mode (Free Run).
3.5.7.

Native Color Temp

Settings: 5500, 6500, 7500, 9300, 10000
Native Colour Temp allows the user to select from pre-configured colour temperatures to match the
display. If both Native Colour Temp set here in the Output menu and Colour Temp set in the Colour
menu are set to the same value, no conversion is performed.
3.5.8.

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) Colour Temp in the Colour menu, or a lower number for the Native Colour Temp in the
Output menu.
©
Calibre UK Limited Issue 2.40
nd
22 April 2013
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