User guide

Page 68 AudioCore Version 8.40
AudioCore Version 8.40AudioCore Version 8.40
AudioCore Version 8.40
USB-485 – USB to RS485 Conversion Kit
What is it?
A combination of a USB to serial interface and RS232 to RS485 converter
to provide direct balanced 2 wire + shield connection.
What is included?
1 x Aten “UC232a” USB- Serial adapter with driver disk & manual;
1 x KK Systems “K2-ADE” RS232-RS485 converter;
1 x 9 pin D-type male to 3 pin XLR male adapter cable.
When should I use this?
When the (first) unit to be controlled is more than 25 feet from the
PC/laptop AND the computer doesn’t have a standard 9-pin COM port
(but does have a spare USB port!).
What else should I know?
The KK systems “K2-ADE” RS232-RS485 interface supplied in this kit is NOT the same as the one in the standard 232-485
kit – note the “ADE” suffix which stands for Automatic Device Enable. The non-ADE version will not work reliably!
The “K2-ADE” converter has a set of DIP switches to adapt the system for various uses. These are
set correctly by XTA when leaving the factory and should not be adjusted. If for any reason they
are different, the correct settings are shown in the diagram to the left.
The wiring for the 9 pin D-type to 3 pin XLR is as follows:
D-type XLR
1 1
3 2
8 3
Maximum cable length from the output of the converter is 1000 metres.
Where do I get one?
There is a multitude of very similar looking USB to serial devices available in most computer stores but in our experience,
they can prove unreliable due to timing of data through the converter, and inconsistencies between manufacturers.
It is highly recommended that the XTA converter be used!
Similarly, many RS232 to RS485 converters are available through specialist suppliers, but the KK systems converter has
been proven by XTA to work reliably in all cases and we recommend you use this device. The kit can be purchased from
your local XTA supplier or directly from XTA by credit card. See the end of this document for details.
XTA Part Number: USB-485
For technical support on this product please email [e-mail].