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APPENDIX K: TP400 USB ADAPTER BOARD
The TP400’s USB ports are accessed through a small printed circuit board called the
TP300USB. This is joined to the TP400 with a short length of CAT5 unshielded
twisted pair cable. The TP300USB contains EMC filters and a dual USB connector
with status LEDs. The TP300USB is designed to be mounted on the enclosure; this
location allows EMC filtering to be optimised.
A cable assembly, the TB486ET-CAB, joins the TP400 to the TP300USB.
This Appendix contains the mechanical drawing of the TP300USB, allowing users to
build their enclosure to accommodate the TP300USB. It also includes the circuit of
the TP300USB, for users who would prefer to design the TP300USB circuitry into
their own PCBs.
This circuit remains the copyright of DSP Design Limited, but DSP Design grants
permission for any or all of the circuit to be used by DSP Design customers who are
using the circuit together with DSP Design's processor boards. The circuit is offered
on an unsupported basis, and no warranty is given as to the accuracy of the design.
Care should be taken when tracking the TP300USB circuitry. Power tracks should be
kept thick. The signals tracks should also be wide, and should run as pairs in parallel,
avoiding vias and other tracks as far as possible.
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Страница 136: ...J2 164004 C03 FIGURE J1 TP400ET MECHANICAL DRAWINGS FIGURE J2 TP400ET CIRCUIT DIAGRAM ...
Страница 138: ...K2 158004 B00 FIGURE K1 TP300USB MECHANICAL DRAWINGS FIGURE K2 TP300USB CIRCUIT DIAGRAM ...