[time-nuts] FE-5680A

EWKehren at aol.com EWKehren at aol.com
Thu Nov 10 17:16:37 EST 2011


Thank you Peter
With Jose's and your input I will power it up in the morning. Mine has the  
same part # and a date code 0330. Does yours respond to the trim pot, I 
plan to  bring out the tuning voltage to a modified Shera controller.
Bert
 
 
In a message dated 11/10/2011 5:03:07 P.M. Eastern Standard Time,  
bell.peter at gmail.com writes:

Assuming  it's the same as the units I have (two labels, with "FEI  P/N
217400-30352-1" on the upper label and two barcodes on the  lower
label) then the +5V supply runs all the logic in the unit. There  are
no special power sequencing requirements, but you need both  supplies
for the unit to operate. The current drain on the 5V line is  fairly
low - about 90mA - the 15V will pull about 2A when the unit is  cold
and then drops to 500-600mA once everything is warmed up.  Pin 3  is
the lock indicator - driven low when locked.  The output (10MHz  sine)
is present on pin 6, and appears immediately after power up -  although
the frequency is not accurate until the lock pin is  asserted.

The 4 digit prefix on the lower barcode is a date code - so  "S/N
0416-77234" would indicate a unit made in week 16 of  2004.

Regards,

Pete Bell

On Fri, Nov 11, 2011 at 12:30  AM,  <EWKehren at aol.com> wrote:
> I did purchase one of the  "New"  FE-5680A Rb's. Looking at packaging  and
> the housing  it does look new. I have not powered it up because of +5  
Volt on
>  pin 4. Does any one know its purpose and is there a power up  sequence.  
Any
> help will be appreciated.
> Bert Kehren  Miami
>  _______________________________________________
> time-nuts mailing list  -- time-nuts at febo.com
> To unsubscribe, go to  
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the  instructions  there.
>

_______________________________________________
time-nuts  mailing list -- time-nuts at febo.com
To unsubscribe, go to  
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the  instructions there.



More information about the time-nuts mailing list