[time-nuts] FE-5682A coming, any info?

[Bob Camp]

Hi

If you have any concern about the wiring of the unit - open it up and check. There are an enormous number of conflicting wiring options for the small FE rubidiums. 

Bob

On Nov 21, 2012, at 5:50 AM, Fabio Eboli <fabioeb at quipo.it> wrote:

> Hello,
> I have a pair of FE-5682A coming,
> not that I need them, but I had flat
> shipping from the seller freakyflickers
> on ebay fro another item, I was asked 14USD each.
> 
> I'm a bit confused by the pinout on
> the datasheet:
> http://www.ko4bb.com/Manuals/05)_GPS_Timing/FEI/FE-5682A_Datasheet_REVB.pdf
> 
> The pinout:
> 1 RF out
> 2 RF RTN (Chassis GND)
> 3 DC ISOL RF RTN
> 4 CHASSIS GND
> 5 Lamp Volts
> 6 BITE OUT
> 7 EXT. C-FIELD V adj.
> 8 -48V RTN
> 9 CRYSTAL V MON
> 10 POWER -48V
> 
> a) power supply:
> On the specs it reports
> "Input Voltage Range +19 TO +32Vdc"
> but the pinout reports pins 10 "POWER -48V" and 8 "-48V RTN"
> how is supposed to be powered?
> 
> b) pins 1 and 2 seem self explanatory, but
> pin 3 "DC ISOL RF RTN" what should mean?
> Should I connetc it to ground (or any reference I have)?
> 
> c) pins 5 and 9 are monitors for working voltage of
> lamp and VCXO, am I correct?
> 
> When I will have the units here I'll open them up and
> post some pics.
> 
> Fabio.
> 
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