Subject:
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Re: Re[2]: phone cord length
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Tue, 4 Mar 1997 12:58:09 GMT
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Original-From:
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<[tomb@netperceptions]AntiSpam[.com]>
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Viewed:
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1615 times
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> TTL does NOT go down that line, it is RS232 which is commonly used at
> up to 50 feet. However, you might need to use a shielded cable if you
> use a lead longer than about 10 feet.
On the phone cord between the handy board and the charger/interface
card, the signal voltage is TTL levels. There is also charge voltage,
and ground in the other wires.
RS232 level conversion is done by the MAX232 on this card.
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Message is in Reply To:
 | | Re[2]: phone cord length
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| TTL does NOT go down that line, it is RS232 which is commonly used at up to 50 feet. However, you might need to use a shielded cable if you use a lead longer than about 10 feet. Richard (28 years ago, 4-Mar-97, to lugnet.robotics.handyboard)
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