[time-nuts] FE-5680A won't lock

Rob Kimberley robkimberley at btinternet.com
Wed Jan 18 14:59:13 EST 2012

I got my two that I ordered yesterday (took over a month on the free postage
deal to UK).

Quickly lashed them up to the bench PSU and both locked within about 3
minutes.  Both extremely close in frequency (not done any measurements yet),
but happy with what I'm seeing so far, especially for the price I paid!

Rob Kimberley

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Chuck Forsberg WA7KGX N2469R
Sent: 18 January 2012 15:11
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] FE-5680A won't lock

My first 5680a took at least a half hour to lock the first time.
After that it locked within a few minutes.  This is the one that draws
340 ma from 5 volts
but is extremely stable.

On 01/17/2012 08:31 PM, Scott Newell wrote:
> Just got my 3 in from nichegeek.  Paid Thursday, shipped Friday, 
> arrived this evening.  Wow.  (Actually arrived too quickly--I don't 
> have my t-bolt running, so I can't easily do an accurate frequency
> check.)
> Two power up and lock in <3 minutes.  One powers up, gets toasty, and 
> gives 10MHz, but no lock and no PPS.
> The tuning config on all three read back as 0.  I've set the problem 
> child to near +/- FS and about +/- 25% of tuning range: still no lock.
> Any suggestions on what I should look for or try?  I'm not quite ready 
> to throw in the towel and contact the seller.

Chuck Forsberg WA7KGX N2469R     caf at omen.com   www.omen.com
Developer of Industrial ZMODEM(Tm) for Embedded Applications
   Omen Technology Inc      "The High Reliability Software"
10255 NW Old Cornelius Pass Portland OR 97231   503-614-0430

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