wire... data wire that is.... and the code [RE-wrenches]

[John Raynes]

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Geoff,

Keep in mind that USB and RS232 completely different interfaces, not just 
the same thing with a different adapter!  I don't know if the SMA software 
supports both USB and RS232 drivers, but you'll need to choose one or the 
other, I'd think, and then either get a RS232/RS485 adapter, or a USB/RS485 
adapter (if such an animal exists, I guess it does).  I'd recommend staying 
with RS232 if you can, unless the SMA folks suggest otherwise.

Good source to start for RS232/RS485 adapters would be
http://www.bb-elec.com/convert_serial_port/convert_serial_port_interface.asp

Also, be aware that a lot of readily available instrument and data cable is 
only rated to 300V.  Don't know if that could be a problem, but 600V rated 
stuff can sometimes be a bit harder to come by.

Regards,
John Raynes
RE Solar
Torrey UT
www.re-solar.com



At 03:51 PM 4/16/04 -0400, you wrote:

>ALSO - Any cheap source and price for the required RS232-485 adapter?  (and
>probably a 9 pin to USB adapter too as SMA stuff seems to be in 9 pin and
>the computer industry seems to be in USB...
>
>Two ears of corn and a chunk of concrete for everyone (Cheers to Matt from
>OH)
>
>Sincerely,
>
>Geoff Greenfield

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