|
|
| Author |
Message |
domahony
User
Joined: 07 Jan 2008
Posts: 2
Location: Dublin
|
 Posted: Mon Jan 07, 2008 4:50 pm Post subject: Problem ADC-16 0n Com1 |
 |
|
I have just experienced a problem with my ADC-16. I set it up on a desk top PC and it works fine. However when I transfered it to a laptop with the same operating system, XP, it could not see it. However when I disconnected the instrumentation, the software found it. As soon as I reconnected the instrumentation it could not find the data logger again. The instrumentation is a set of 4 strain gauges in a full bridge. I'm using the adc-16 to power it. Is there a problem with this and do I need to use an external power supply?
Dave |
|
| Back to top |
|
 |
picojohn
Site Admin
Joined: 11 Jun 2007
Posts: 311
|
| Posted: Wed Jan 09, 2008 3:11 pm Post subject: |
|
|
Hello Dave,
The amount of current that may be drawn from Pin 12 on the ADC-11 varies between computers. It is very likely that your laptop PC is unable to supply the same level of current as your desk top PC, and therefore, too much current is drawn from pin 12, leading to an excessive drop in the ADC-11 supply voltage from the PC.
As you have already deduced, the solution would be an external supply for your instrumentation.
Regards
John |
|
| Back to top |
|
|
domahony
User
Joined: 07 Jan 2008
Posts: 2
Location: Dublin
|
| Posted: Thu Jan 10, 2008 12:36 pm Post subject: |
|
|
Cheers John,
Solved by putting on a battery whihc for the tests works well.
Dave |
|
| Back to top |
|
|
|
Cart
Email