Hardware; The Pcb; Links And Switches - pro bel V6402 HD User Manual

V6402, V6404, V6406, V6408
and V6418 HD converters
Notes:
1. In this case, a pixel is a luminance sample.
2. When in Short Delay Down Conversion mode, these conversions have a maximum insertion delay of 1
ms.
2.6

Hardware

2.6.1

The PCB

This figure shows the construction of the PCB, along with some components of interest. Note that the
main I/O connector is in fact mounted on a daughter board, which is held down by two screws. The Down
and Cross Converters also have a large sub-board mounted on the centre of the board.
The main connector is a 220-way 2mm press-fit connector. When new there may be a substantial
insertion force when mating with a rear module; this is normal. However, it is important that the module is
not plugged into one of Vistek's conventional units with significant force. If so then it is possible to break
off one of the locating lugs.
JP2
JP1
2.6.2

Links and Switches

The purposes of the links and switches are shown in the following table. Details of their operation are
described in later sections.
ITEM Title
SW1 RESET
JP1 Debug
JP2 H8 Program
PL1 JTAG Port
JP3 JTAG Enable
SW Video REF Term
HU-V6402&4&6&8&18
Comments
Used to reset the internal microcontroller.
For development and test use only. (May not be
fitted)
For development and test use only. (May not be
fitted)
Never used in operation. (May not be fitted)
For Test. Fit in 2-3 position.
Slider up – Terminated with 75Ω
Slider down – Hi-Z (un-terminated)
Flash Memory Card
PL1
JP3
FS1
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