The institutional services may have improved, but old habits die hard. > It is a rare company indeed where the sysadmins are told that they > are to do what the engineers request, without fighting, whining, or > being passive aggressive about it. Those are the sorts of companies > one wants to work for.

The 9462 is a very good Oven as I said before, but not a lot of inside information for it is to be found :^) Having had a few 9442-12s die on me I did trace out the circuit of those, but that is the only kind, so far. Touch wood. Dan ac6ao / g3ncr

Message ----- From: "Poul-Henning Kamp" To: "Discussion of precise time and frequency measurement" Sent: Monday, November 28, 2011 11:54 PM Subject: Re: [time-nuts] Line Volytage frequency Interface > In message <8CE7C3F5C8796A8-1410-83DB7@webmail-m022.sysops.aol.com>, Malcolm wr > ites: > > > THREE PEOPLE A YEAR DIE

Many of them also > have PLLs > on the die that are intended for clock generation but can often be abused > for other > purposes :) > _______________________________________________ > 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.

The second one had the B channel die.  I just bought two others on ebay for parts/not working.  One also has the B channel out but the last and highest priced unit just needed the rear switch set to internal osc and now it works fine.   My estimate cost from the Mouser catalog is less than $20 per unit.  For me, cheap insurance.

Someone will > correct me and the thread will never die.) The rate at which a mass of > radium becomes inert is expressed as its half-life, which is the TIME > that it takes for half of the remaining radium to become inert. The > decay is exponential, as are so many natural things.

Then along came the IBM-PC, with its comport card that had both 20ma current loop, and RS232 implemented using single transistor circuits, and the die was cast. The MAX232 also implemented the standard incorrectly by leaving out the hysteresis and going with a TTL threshold.

Unfortunately there are a lot of different ways these beasts can die. The repair guys who should know always claimed that bulb issues were < 30% of the issues they saw. That was on an earlier generation of Rb’s but I suspect it applies. None of the ones I had arrive DOA were bulb problems.

If you leave them in the charger "forever" they die "a lot sooner than forever". When used in standby applications you can only use 70-80% of their capacity because you have to stay out of the "overcharge" domain.

. ----------------------- > The older 6ch Oncore receivers receivers are beginning to die apparently.