Re: wiegand data interference

["Dave White" <renofusion@xxxxxxx>]

voltage drop is fine.
elevator company ran the wire which is 18/2 gauge pairs with overall shield.
"Bill" <billnomailnospamx@xxxxxxxxx> wrote in message
news:7q6kfiFh8aU1@xxxxxxxxxxxxxxxxxxxxx
> Use shielded wire, which is metal foil wrapped around the outside of the
> cable. This keeps outside electrical noise out. Ground one end of the
> metal foil.
>
> Then there is "voltage drop" with long distances. Use a larger gauge wire
> for long distances. Something which starts out as 5 volts on one end can
> be 2 volts at the other end!
>
> Voltage drop calculator...
> http://www.nooutage.com/vdrop.htm
>
> Shielded cable...
> http://images.google.com/search?q=Shielded+cable&hl=en&sa=N&um=1&ei=ixs-S8_8DIyGtAOlod0G&oi=images_breadcrumbs_list&ct=images-breadcrumbs-list&cd=1
>
>
>
> "Dave White"  wrote in message
>>I am having issues with a card reader in my elevator not sending wiegand
>>data to my controller. all voltages are good at the reader. think it may
>>be interference causing problems.
>> will a wiegand extender fix this issue?
>>
>
>