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Geoff
Guest
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 Posted: Wed Jun 02, 2004 12:49 am Post subject: TC08 monitoring on laptop |
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I have a customer with a TC08, when they use it on the desktop PC it logs and updates ok If they warm up channel 1 , channel 1 warms up as it should, When using the laptop if they warm up channel 1 all the channels seem to be affected and change, The installation is the same.
Any suggestions please. |
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markspencer
Site Admin
Joined: 07 May 2003
Posts: 610
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| Posted: Wed Jun 02, 2004 7:57 am Post subject: |
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Hi,
I am sorry to hear that your customer is experiencing problems.
The problem is most likely being caused due to the Laptop using a switch power supply, along with no earth cable in the mains lead. There are two possible solutions:
1. Try to run the laptop of batteries, however, some laptops seem to reduce the amount of voltage levels to the serial port thus stopping the TC-08 working.
2. Use the laptop form the mains, but connect a cable from the 9D connector to a known and tested grounding point, this grounding point should be checked with an earth tester.
Best regards, |
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Guest
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| Posted: Wed Jun 02, 2004 7:52 pm Post subject: TC08 |
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| That was it, Thanks |
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Dan Acres
Guest
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| Posted: Tue Jul 20, 2004 9:53 am Post subject: TC-08 |
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We are experiencing a similar problem, and putting the laptop on batteries seems to work. Unfortunately, the batteries will not last long enough to carry out our tests.
We are using a Rs-232 USB to serial adaptor, as the laptop has no serial port. Will connecting pin 9 on the serial end of the cable accomplish the same as your suggestion above? |
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markspencer
Site Admin
Joined: 07 May 2003
Posts: 610
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| Posted: Thu Jul 22, 2004 7:09 am Post subject: |
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Hi,
I am sorry to hear that you are experiencing problems with your TC-08. To solve this you can do the same, attach a cable onto the D9 connector of the TC-08, and then run it to a known and tested grounding point.
You only need attach the cable, you co not need to connect a serial onto the end of the USB to serial port adapter, unless this will assist you in connecting the cable.
Best regards, |
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Dan Acres
Guest
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| Posted: Fri Jul 23, 2004 7:37 am Post subject: |
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| Connecting D9 to earth has solved the problem, many thanks. |
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sabrina
User
Joined: 27 Oct 2004
Posts: 2
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| Posted: Wed Oct 27, 2004 6:21 am Post subject: ok but how to connect the tc08 to a ground point? |
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I have a texas instruments extensa 670 cdt and a tc08 datalogger, how to connect the tc08 to a ground point?
Thanks a lot for your answer |
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markspencer
Site Admin
Joined: 07 May 2003
Posts: 610
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| Posted: Wed Oct 27, 2004 7:17 am Post subject: |
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Hi,
To connect the TC-08 to a known and tested earth you will need a earth tester to check the mains earth is good.
Connect a piece of cable to the outer shell of the 9 D connecter, this can be done on the screw terminal part. Then connect the other end to your known and tested ground point.
Best regards, |
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