I'm wondering if something like this $10 item http://www.nulsom.com/datasheet/NS-RS232_en.pdf
Would perform the same function as the components in the factory cable once I've figured the pinout at the clock end, which shouldn't be too hard unless someone has done that already. Or would I need to find an similar device which inverts the incoming logic first? TTL to RS-232 adapters seem fairly common and probably cheap for them just to source off the shelf from an OEM supplier. I don't know if I've seen an inverting one and that would seem a more costly approach than handling the inversion on the clock board. Philip ----- Original message ----- From: Gregory Beat <w...@icloud.com> To: time-nuts@febo.com Cc: paul.alfi...@gmail.com, timen...@philipjackson.com Subject: Re: [time-nuts] RS-232 Pin Outs for the Acron Zeit WWVB LCD ClockDate: Sat, 22 Jul 2017 12:33:01 -0400 The LM-358 Op-Amp is used to Invert the Serial Data (RxD, TxD) stream. http://www.st.com/content/ccc/resource/technical/document/datasheet/61/46/87/01/98/ed/44/c5/CD00000464.pdf/files/CD00000464.pdf/jcr:content/translations/en.CD00000464.pdf Coupled with the usage of an RJ11 (4P4C, modular) ... the connection would have to be a minimal 3-wire serial (RS-232 or TTL/UART)https://en.m.wikipedia.org/wiki/RS-232#3-wire_and_5-wire_RS-232 Ground is easy to find, and TxD and RxD is a coin-toss (50:50) if you hook-up right. greg, w9gb === I thought I could answer this question (Acron Zeit) easily, since I had the cable right at hand. But my continuity detector gave strange results. I opened up the D-shell and found a small circuit board with diode, capacitors and what looks like an ST358 op amp. Paul Alfille ==Fri, Jul 21, 2017 at 4:27 PM, Philip Jackson <> wrote: Does anyone have the serial pinout info for the Acron Zeit clock? --- Sent from iPad Air _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
