[time-nuts] FE5860A CONNECTIONS

[Rex]

Not completely true. They are not "invariably single supply". This 
subject seems to come up at least once a year. Usually, I provide this 
information and apparently some don't believe me. As you say, there are 
many 5680A variants.

I had one I obtained several years back that definitely needed needed 
both 15 and 5 V supplied to it. That one came mounted on a sawed-off 
piece of circuit board, so it could be the same type as the OP has. On 
that one, I figured out how to make it work but I never found any way to 
program it's output frequency as can be done with most of these.


On 3/14/2011 7:27 PM, Murray Greenman wrote:
> Dan,
> Yes, you are right. There are so many variants of the FE-56xx devices
> that I'm sure even FEI don't have a clue which is which!
>
> The FE-5680 family are invariably single supply, although the connectors
> vary. Pull the lid off and with an Ohm-meter trace the input to the
> regulators back to the DB9 or DB15 connector to be sure. +15V should do
> the job.
>
> As far as my experience goes, only the 5650 family require dual supply.
> Anyway, a sure way to check is by seeing if there are both +12V and +5V
> regulator chips fitted in the power supply section behind the panel.
>
> If you have any more questions, please ask. I have four different (and
> working) FEI units of various models.
>
> 73,
> Murray ZL1BPU
>
>
>
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