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General => Technical support => Topic started by: cch1955 on August 21, 2006, 04:51:28 PM

Title: simple analog input pot
Post by: cch1955 on August 21, 2006, 04:51:28 PM

In the T100MD+ installation guide page 7 you show using a 1k pot for a  low cost input. Is there any reason for using a 1k rather than a 5k pot? I assume the A/D input is very low current and I will use the 5volt analog supply voltage. so I would think the 5k would be acceptable. The industrial version of the low cost pot I am using is not avalible in 1kohms.

Thanks

Title: Re:simple analog input pot
Post by: support on August 21, 2006, 05:47:46 PM

You can use 5K ohm or 10K ohm pot with the T100MD+ analog input since the input impedance > 1 M ohm.

Title: Re:simple analog input pot
Post by: cch1955 on August 22, 2006, 08:16:54 AM

Thanks. I looked for the impedance in the documnentaition, but did not find the value.