serial port cf-18

Hi All, can someone tell me why my device manager is showing com1
& com2 when ive only got 1 and does anyone know how i can test it

Thanks
Steve

 

since you apparently have the touchscreen model, the other serial port is for the touchscreen, AFIK the digitizer model has no com ports, as for testing it out a serial based GPS reciever or a loop back plug works just great

 

COM2 is only available on the port replicator or docking station.

 

Thanks whats a loopback plug ??

Thanks
Steve

 

just a serial plug that has input lines directed to output lines

heres the ones I have, or you can do a search and build your own for under $5

http://www.passmark.com/products/loopback.htm

 

So how can i build my own, do i have to short pin 2 and 3 ?

Thanks
Steve

 

few more connections then just 2 and 3

take a look here for all the most common serial pinouts

http://www.airborn.com.au/serial/rs232.html

 

So looks like i have to buy somthing then to test, you say the other coms post is for touchscreen, other is coms 2 ??????

 

What are you hooking up on your com 1 port
Why don't you just hook up the device to the com port, and then within windows, use HyperTerminal to read the info

Btw, tough-2-go knows his Toughbooks and has already stated that com 2 in your case is for the docking station, so its not for you touchsceen

Alex

 

I think in one of the Service Manuals (One of the more complete ones!) it explains how to make the loop-back plug. Do you have a service manual?

 

Hi Thanks for the info but i dont have the service manual

 

PM me your email address and the exact model number and I'll send you everything for your model in a zipped file... All the manuals... User, Service, Schematic, board layout, etc...