[time-nuts] Different or defective FE-5680A?

[Joseph Gray]

Considering that I get a Lock and PPS but no 10 MHz, I have to assume
that the unit is defective. Still waiting to see what nichegeek says.

Joe Gray
W5JG

On Fri, Jun 8, 2012 at 6:36 PM, Bob Camp <lists at rtty.us> wrote:
> HI
>
> I suspect it's the same part then. I doubt they were using two vastly different Rb's on the same card.
>
> Bob
>
> On Jun 8, 2012, at 5:34 PM, Joseph Gray wrote:
>
>> This one has no SMA and hasn't been modded in any way that I can tell.
>> It came on a cutoff circuit board, like the others.
>>
>> Joe Gray
>> W5JG
>>
>> On Fri, Jun 8, 2012 at 3:29 PM, Bob Camp <lists at rtty.us> wrote:
>>> Hi
>>>
>>> There is a variant that comes from the factory with no 10 MHz output at all. Industrious people in far away places drill holes and wire up SMA connectors to give them a 10 MHz output. If yours is one of those, the mod may not have been 100% effective. Maybe a loose wire ….
>>>
>>> Bob
>>>
>>> On Jun 8, 2012, at 5:21 PM, Joseph Gray wrote:
>>>
>>>> Further information. I do get a Lock (low) indication on pin-3 and a
>>>> PPS on pin-6. Nothing at all on pin-7.
>>>>
>>>> Joe Gray
>>>> W5JG
>>>>
>>>> On Fri, Jun 8, 2012 at 1:41 PM, Joseph Gray <jgray at zianet.com> wrote:
>>>>> Months ago, I ordered two FE-5680A units from nichgeek for my personal
>>>>> use. They work just fine. Recently, I ordered one for work from the
>>>>> same source.
>>>>>
>>>>> For the work unit, I ordered a small 15 VDC switcher and a 5 V DC-DC
>>>>> module from Jameco. Today, I wired it all up, using the same pinout as
>>>>> the previous units that I bought from nichegeek. Although the unit
>>>>> gets warm, I get no 10 MHz output at all on pin 7.
>>>>>
>>>>> I double checked my wiring and it is OK. I even went home and got one
>>>>> of my units. Plugging my home unit in place of the work unit, mine
>>>>> puts out a nice 10 MHz in short order.
>>>>>
>>>>> Looking closer, I see that the two units are labeled differently. Mine
>>>>> has a large white label that says "P/N 217400-30352-1".  On the
>>>>> smaller label "FE-5680A  UN 78082" and "S/N 0434-84673". The work unit
>>>>> is silkscreened with "PN: FE-5680A". The small label says "FE-5680A
>>>>> UN37915 REVISION: B" and "S/N 0226-53954".
>>>>>
>>>>> I know that there are several versions of FE-5680A, with different
>>>>> pinouts. I'm wondering if this latest unit is different than the two I
>>>>> purchased before.
>>>>>
>>>>> I've emailed nichegeek and am awaiting a reply.
>>>>>
>>>>> Joe Gray
>>>>> W5JG
>>>>
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