Correction, my bad.
On that last 0-5V positive-going PPS interface, the connection should have been:
0-5V PPS >------||---+----------> DCD
10 uF |
+--/\/\/---< -5V
| 10K
+--/\/\/---< GND
10K
Since it's a *positive*-going pulse, you want the system to start biased
negative. -5V is usually the single *white* wire on the motherboard
connector. That's a bit more awkward to get to than the common molex
drive connectors, but still pretty easy.
Cooking it up to +5V wouldn't have hurt anything, but it wouldn't
have worked, either.
_______________________________________________
timekeepers mailing list
[email protected]
https://fortytwo.ch/mailman/cgi-bin/listinfo/timekeepers
