[DSP-10] Intermittent PLL Lock Issue

[kd7ts]

On Wed, 25 Nov 2015 17:01:18 -0800, Richard Miller via DSP-10 <dsp-10 at mailman.qth.net> wrote:

> Anyone ever seen this issue? If so, what were your findings?

Hi Rich,

I replied via the reflector, but not sure the messages went through, so here's a synopsis of the previous messages.

In my case it was an intermittent BNC connector on the 10 MHz reference.

How do you know which PLL is causing the lock problem ?

 From the PLL diagnostics page at:

http://www.proaxis.com/~boblark/dig_pll1.htm

U104-7	5 Volts    This means LD=Lock; 0 to 4V=Out-of-Lock
U7-11	5 Volts    This means LD=Lock; 0 to 4V=Out-of-Lock

Mike KD7TS