Nigel
Thanks for your comments - - the plot thickens. Would this indicate that
the 5 volt supply required for general internal use is obtained by an
internal Vreg. from the basic 15 volt supply - - I would guess so because
the overall current requirement would seem to be similar ? What is for
sure, is that the manufacturers offered this product in various bespoke
styles without any external (case) indication. We await those of you that
are keen and able to "investigate in depth". By the way, I gave the Russian
Rb unit, which came out of my Quartzlock 10A-R, to a "new" Time-nut in my
locality. I note that another Quartzlock 10A-R is currently being offered by
one of our popular websites - I wonder if it has the same Rb unit ?
Regards
Roy
-----Original Message-----
From: gandal...@aol.com
Sent: Sunday, January 08, 2012 3:49 PM
To: time-nuts@febo.com
Subject: Re: [time-nuts] Ebay FE-5680A Rb: Connections and Features
Hi Roy
If your unit is generating an output as you report, without 5 volts to pin
4, then I'd leave well alone.
On the current batches of cheaper units, that do require a 5 volt supply to
pin 4, they won't lock or provide an output without it.
Removing that 5 volt supply from a unit that's already up and running, on
two that I've tested so far anyway, causes it to lose lock and the 10MHz
output collapses, which would seem to be a fairly strong indication that on
these units it is needed:-)
regards
Nigel
GM8PZR
----------------
In a message dated 08/01/2012 12:57:57 GMT Standard Time,
phill...@btinternet.com writes:
Somebody on the list has suggested that it could do damage
to this variant, to connect 5 volts to pin 4, to date I have not done
this,
Can any member confirm these details.
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