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

[Peter Bell]

I'm not familiar with that unit, but the pinout appears to match the
Efratom LPRO-101 with the exception of the power supply.

On the LPRO, pin 8 is the -ve side of the 24V supply and pin 10 is the
+ve side.  The "19V to 32V, 24V nominal" spec also matches the LPRO.

It's possible that there is more than one variant - one with a +24V
supply to match the LPRO and another with a -48V supply for telecom
applications.

Regards,

Pete


On Wed, Nov 21, 2012 at 5:50 PM, 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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