[time-nuts] Z3801 Replacement GPS Receiver Card

Mike Millen mike.millen.uk at gmail.com
Tue Sep 18 17:14:35 UTC 2012


Dan Kemppainen wrote:
> On 9/17/2012 6:03 PM, time-nuts-request at febo.com wrote:
>> OK, you can test a VP Oncore GPS receiver alone if you have a mean to
>> translate the TTL serial port to a regular RS232 for the PC. This
>> can be done with a MAX232 chip (or equivalent). Then the pinout
>> (refer to the
>
> FYI, I've had really good luck with these over the years:
> http://www.digikey.com/product-detail/en/TTL-232R-5V/768-1028-ND/2003493
> http://www.digikey.com/product-detail/en/TTL-232R-3V3/768-1015-ND/1836393
>
> The big thing is the drivers are really well written. The seem to be
> able to talk to anything I point them at. Never found any software
> they don't like (yet) ...


Even better... using the free programming utility on their website you can 
set the data lines (& handshaking if you need) to inverted.

Then there's no need to add an inverting stage to the VP UART.

Mike




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