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Graphic tablet cable problem

Posted on 1997-07-21
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Last Modified: 2016-02-10
I have recently bought an old SUMMAGRAPHICS Summasketch IIIpro graphic tablet, but it was not provide with all the accessories. I need to know witch is the PIN assignment of the cable between the PC and the tablet. It could be great to know what type of power supply it needs.
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Question by:werquin
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Expert Comment

by:tabit
ID: 1011273
Dear Wequin,

you should go to the place you bought the tablet and request the appropriate cable. Doing it yourself will possibly destroy your egliability for warrenty-claims.

Frank
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Author Comment

by:werquin
ID: 1011274
The tablet is not under waranty because this is not a new graphic tablet. I have contacted the SUMMAGRAPHICS builder/reseller from PARIS to buy the accessories but these accessories are too costly (the price of the cable and power supply is near of the price of the tablet).
Thank you for your answer.
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Accepted Solution

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tabit earned 100 total points
ID: 1011275
Dear Werquin,

you should have written that into your question.

The only thing I can see now is to find someone else who owns the same model of tablet e.g. in an appropriate newsgroup and copy the cables he or she has using electrical measurement instruments. Remember: the pinout is treated by these companies like a trade-secret.

You can also try to find some computer-repair-store specialised on graphics companies. They might well make you a cable or at least a copy of the pinout-plan the might have for their purposes.

It is bad companies can still allow themselves a bad service like this.

tabit
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Author Comment

by:werquin
ID: 1011276
I dont know anyone who has tha same graphic-tablet...
The pinout is not a secret, the cable seems to be a sort of null-modem serial cable with power supply on the cable.
(There are RJ45 and RS232 connectors on the cable.)
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LVL 5

Expert Comment

by:tabit
ID: 1011277
just because the cables >>look like<< RJ45 or RS232 it does not necessarily have to be they have the same pinout. Some companies use standard connectors with propietrary pinout to force people to buy their products. By the way:

If you do not have the cables, do you have the drivers?

Why did you give only the D-rating?

tabit
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Author Comment

by:werquin
ID: 1011278
I have already the drivers. The cable seems to be a null modem cable because it is written in the documentation of the tablet (PIN 2 and 3 of computer are crossed).
Thanks if you could find more information.
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