I didn't convert the PECL signals, but instead went inside the unit and tapped off the 1pps and 10MHz signals. I have details at http://www.febo.com/time-freq/gps/z3801a/mods/index.html
John ---- Don Mimlitch said the following on 04/09/2006 08:41 PM: > I have a HP Z3801A which outputs the 1 PPS and 10MHz as Differential Pseudo > ECL. What is this? > > How do I access these signals? How do I convert them to TTL or CMOS > Levels. Are there any IC's (DIP Package) to do the conversion? For short > cable runs (2 or 3 Ft.) is there a simple circuit for conversion? Also, how > might I convert the 1PPS to an RS232 Level. Can I use an RS422/RS485 > converter? > > I should mention that this unit was converted to RS232 for the RS422 > transmit/receive signals which includes a jumper header with only 6 of the > jumpers inserted. I wonder if the Z3801A already has circuitry to convert > these signals like it does for the RS422 to RS232? > > Any help would be appreciated. > > Thanks > Don Mimlitch > [EMAIL PROTECTED] > > > --------------------------------- > How low will we go? Check out Yahoo! Messenger’s low PC-to-Phone call rates. > _______________________________________________ > time-nuts mailing list > [email protected] > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
