[time-nuts] My FE-5680A Came In Today

[Lachlan Gunn]

Hello.

Regarding getting the cable out, on mine I have used a short length of
wire-wrap wire (not a proper transmission line, but hopefully good enough to
start with) that goes out through the tuning hole on the other side of the
case.  When closed again, the wire is clamped between the case and part of
the internal metal structure, which gives it some mechanical stability as
well.

Thanks,
Lachlan

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Bob Camp
Sent: Wednesday, 18 September 2013 9:36 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] My FE-5680A Came In Today

Hi

If you retune it, you probably will throw off the pps. The pps drive
strength is a bit weak, so you need to be careful looking for it. On some
units there is a software command to enable / disable it (as in pps only
when warmed up and locked - like a gps). The can / cover on the unit is mu
metal (Rb's are mag sensitive). If you drill a hole in it, you are likely to
impact it's mag shielding properties. 

Bob


On Sep 17, 2013, at 6:21 PM, Bob Stewart <bob at evoria.net> wrote:

> My FE-5680A Rb standard came in today.  After the usual inspections etc, I
fired it up and I have the purple haze.  The native output is 8.38860798/9
(last digit jitter) as read on my 5335A using my GPSDO as an external
standard.  I've got a ways to go before it's all setup, but this is looking
good.  Does it warmup and change frequency at all, or can I retune it to
10MHz and use it as a reference without any further ado?
> 
> Can someone tell me what type of socket that is where you tap off the RF?
It looks sort of like a uFL connector, but a bit bigger.  I'd rather avoid
hacking and soldering on this if I can.  
> 
> Bob - AE6RV
> _______________________________________________
> 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.