[time-nuts] 2 out of 3 bad 5680As?

[Chris Stake]

Hi,
I gather that some of these units require a +5V supply on pin 4 of the
connector and some do not. Could that be the problem here?
Chris

> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> Behalf Of Dave hartzell
> Sent: 28 February 2012 05:18
> To: Discussion of precise time and frequency measurement
> Subject: [time-nuts] 2 out of 3 bad 5680As?
> 
> Hello,
> 
> I have two units that don't produce any output and the lock pin floats
> around +2.3 volts continuously.  The +15v load starts at about 1.8A
> and drops down to about 0.7A on both units, but I never get a +5V or
> 0V on the lock or a 10MHz out signal.  (I'm not using an LED on the
> lock pin, just a high-impedance DVM.)
> 
> I'm relatively confident in my connection setup, since I do have one
> unit that works "as advertised".  In fact, one of the bad units was a
> replacement from nichegeek, received about three weeks after the
> original first order of two units (from Amazon.com instead of China).
> 
> Sorry if this is covered somewhere, but I couldn't find my symptoms on
> the list...  any thoughts are appreciated.
> 
> Thanks,
> 
> Dave
> 
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