Conversion Modes - pro bel V6402 HD User Manual

V6402, V6404, V6406, V6408
and V6418 HD converters
3.3.4

Conversion Modes

V6418
V6404 V6408
V6402
Input Modes:
By default, an auto-sensing mechanism switches the board between SD or HD input modes, depending on
the Input standard applied to the board and the selected output standard.
Alternatively, the board can be 'forced' to work either in SD or HD input modes. In order to do this, go into
the CONFIG : SD/HD Op menu. The three available options are: Auto, HD and SD:
'Auto', as the name implies, enables the auto-sensing mode. Changing the Input Standard from 525i59 to
720p59 for example will prompt the Microcontroller to re-load the FPGA automatically.
'HD' will force the board to permanent HD input operation.
'SD' will force the board to permanent SD input operation.
Permanent SD or HD operation might prove to be useful in installations where:
the infrastructure is fixed to SD or HD anyway
operation in 'noisy' environments
a lot of Input Standard switching is going on (within one group of Standards)
Forcing the board's operational mode to either SD or HD will prevent it from unintentionally re-loading its
FPGA code due to false interpretation of the detected Input Standard.
V6418
Output Modes:
In addition to forcing the input standard detection to a specific standard the conversion can be put into
these two modes via the CONFIG:OP Mode.
'Normal' applies the necessary conversion to maintain the selected output standard.
'Up/Down' automatically up converts to the selected HD output standard when the input is SD, and down
converts a HD input to SD, either 525 or 625 depending on the frame rate of the HD input.
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