As far as I can see from the pictures, the LED must be connected directly to the PPS output so, yes, can be used. Removing the LED can help in getting a full LVTTL swing.
On Thu, Jun 13, 2013 at 5:29 AM, Bob Stewart <[email protected]> wrote: > Hello to the list. I saw on K3PGP's site a mention that the UT-41 GPS > receiver had a 10KHz signal on-board so I decided, why not build a GPSDO for > my "new" HP 5334B? Unfortunately the one I bought doesn't have a 10KHz > point, and the board doesn't even pull out the 1PPS signal from the chip. So > I've had to switch gears and will go with VE2ZAZ's board. I've got a > Motorola UT+ on order, but I was wondering about using the board's LED output > as a sort of low-rent source of 1PPS. Would the short term accuracy be too > bad to even bother with? Has anyone done any tests to see if the LED and > 1PPS signals are essentially the same signal on one of these cheapo boards, > or at least to find out how often the LED output is corrected? The one I got > has a Prolific PL-6313 chip. > > Bob - AE6RV > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
