34s flashing cable possible candidate?
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06-27-2014, 07:26 AM
(This post was last modified: 06-27-2014 07:28 AM by BarryMead.)
Post: #12
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RE: 34s flashing cable possible candidate?
(06-27-2014 06:51 AM)Marcus von Cube Wrote: Even if you clip the voltages, a regular RS232 signal wouldn't work because the levels are inverted from the TTL signals.Marcus is right. If the other end of the cable looks like a 9-Pin D connector, there is no hope that it will provide the signal polarity or voltages you want to program the calculator. Even though it "LOOKS" like the programming cable physically, electrically it isn't even close. |
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Messages In This Thread |
34s flashing cable possible candidate? - Tugdual - 06-23-2014, 11:25 PM
RE: 34s flashing cable possible candidate? - jebem - 06-24-2014, 08:08 AM
RE: 34s flashing cable possible candidate? - pito - 06-24-2014, 08:53 AM
RE: 34s flashing cable possible candidate? - cruff - 06-25-2014, 11:14 PM
RE: 34s flashing cable possible candidate? - Dave Frederickson - 06-25-2014, 11:40 PM
RE: 34s flashing cable possible candidate? - cruff - 06-26-2014, 11:35 PM
RE: 34s flashing cable possible candidate? - Dave Frederickson - 06-27-2014, 12:14 AM
RE: 34s flashing cable possible candidate? - Tugdual - 06-24-2014, 09:49 AM
RE: 34s flashing cable possible candidate? - pito - 06-24-2014, 12:59 PM
RE: 34s flashing cable possible candidate? - BarryMead - 06-27-2014, 03:01 AM
RE: 34s flashing cable possible candidate? - Marcus von Cube - 06-27-2014, 06:51 AM
RE: 34s flashing cable possible candidate? - BarryMead - 06-27-2014 07:26 AM
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