CAD CAM EDM DRO - Yahoo Group Archive

Re: [CAD_CAM_EDM_DRO] 5 volts in Geckos G201?????

Posted by JanRwl@A...
on 2003-01-19 13:31:19 UTC
In a message dated 1/18/2003 3:59:24 PM Central Standard Time,
ralaco@... writes:


> I got 5 volts before I connect it to the Gecko, but once I connect the line
> in the Gecko The voltage drops to 1.743 volts.
>
> Is that ok?<< NO!
>


If not, > What could be the cause?<<

This PROBABLY means you are measuring a pin on your game-port with a
typically-high-Z DVM, but the pin you so-measure is NOT a "5 VDC supply" but
a HIGH 74HCnn logic-output pin!

Try putting a 1K resistor across your DVM test-leads, and probe again. When
you find a pin that reads 5 VDC ±0.25, that is likely a +5 VDC Supply pin.





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Discussion Thread

ralaco <ralaco@y... 2003-01-18 13:58:45 UTC 5 volts in Geckos G201????? Tim Goldstein 2003-01-18 14:06:06 UTC RE: [CAD_CAM_EDM_DRO] 5 volts in Geckos G201????? Mariss Freimanis <mariss92705@y... 2003-01-18 14:25:05 UTC Re: 5 volts in Geckos G201????? ralaco <ralaco@y... 2003-01-18 14:40:54 UTC Re: 5 volts in Geckos G201????? ralaco <ralaco@y... 2003-01-18 14:47:15 UTC Re: 5 volts in Geckos G201????? Art 2003-01-18 14:57:01 UTC Re: [CAD_CAM_EDM_DRO] Re: 5 volts in Geckos G201????? Russ Waters 2003-01-18 14:57:07 UTC Re: [CAD_CAM_EDM_DRO] Re: 5 volts in Geckos G201????? Mariss Freimanis <mariss92705@y... 2003-01-18 15:09:38 UTC Re: 5 volts in Geckos G201????? Mariss Freimanis <mariss92705@y... 2003-01-18 15:11:59 UTC Re: 5 volts in Geckos G201????? ralaco <ralaco@y... 2003-01-18 15:12:48 UTC Re: 5 volts in Geckos G201????? turbulatordude <davemucha@j... 2003-01-18 15:19:50 UTC Re: 5 volts in Geckos G201????? ralaco <ralaco@y... 2003-01-18 15:20:39 UTC Re: 5 volts in Geckos G201????? Tim Goldstein 2003-01-18 15:31:27 UTC RE: [CAD_CAM_EDM_DRO] Re: 5 volts in Geckos G201????? Alan Marconett KM6VV 2003-01-18 15:35:09 UTC Re: [CAD_CAM_EDM_DRO] 5 volts in Geckos G201????? ralaco <ralaco@y... 2003-01-18 17:25:36 UTC Re: 5 volts in Geckos G201????? to MARISS Mariss Freimanis <mariss92705@y... 2003-01-18 18:19:06 UTC Re: 5 volts in Geckos G201????? to MARISS ralaco <ralaco@y... 2003-01-18 19:11:35 UTC Re: 5 volts in Geckos G201????? to MARISS JanRwl@A... 2003-01-19 13:31:19 UTC Re: [CAD_CAM_EDM_DRO] 5 volts in Geckos G201?????