[time-nuts] USB Interface, legacy Software

[Bob Camp]

Hi

My guess is that your software isn't just looking for a serial port. It's
also looking for specific strings back from the GPS. Depending on what you
attach, it may or may not give you the strings you need. If you are doing
timing, a USB interface will be a major headache. 

Most sensor <=> usb issues are a result of the sensor getting a supply
voltage from the serial port. The USB serial chips often don't have enough
power to do the trick. There are various outfits that sell multi port USB
interfaces that allow you to attach a power dongle to them. Often these are
the only thing that will get a setup like yours to work.

Bob

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Joe Leikhim
Sent: Wednesday, March 07, 2012 11:49 AM
To: time-nuts at febo.com
Subject: [time-nuts] USB Interface, legacy Software

I have a software program, no longer supported, which requires two RS232 
serial com port interfaces, one to communicate with a sensor (signal 
strength collection receiver) and the second to accept serial data from 
a GPS.

The laptop computer I am using has only one RS232 Com port which I must 
use with the sensor due to incompatibility with USB to serial converters 
I have tried. This leaves the USB for the GPS input. I am assuming that 
the GPS string should be acceptable as I do nor believe the  software 
needs to handshake with the GPS.

I would like to use a "Delorme" USB type receiver on the USB port. Can 
anyone recommend a software add on that will make this type receiver 
appear as a standard RS232 Com port to my software?

Thanks

-- 
Joe Leikhim

Leikhim and Associates
Communications Consultants
Oviedo, Florida

www.Leikhim.com

JLeikhim at Leikhim.com

407-982-0446

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