Re: [time-nuts] FE-5680A pinout

2007-09-23 Thread Stan W1LE
); SAEximRunCond expanded to false
Errors-To: [EMAIL PROTECTED] RETRY

Hello Jose,

Try:http://www.freqelec.com/prod_pdf/FEI%205680A%20Rb.pdf

Frequency Electronics Inc.  =  FEI

This .PDF may shed some light.

Be sure of the options you have. base unit has 15 VDC, other options use 
a different voltage
for power.

May have to go inside and solder a coaxial cable, to get the Ref. output 
outside.

If you need more help, send an email to the factory info desk.
They were quite helpful to me.

Stan, W1LE   FN41sr   Cape Cod



Jose Manuel wrote:

); SAEximRunCond expanded to false
Errors-To: [EMAIL PROTECTED] RETRY

Hello all, this is my first participation here, as I´ve just joined this 
interesting group.

I´m trying to test a Rb oscillator FE-5680A, but I don´t have information 
about the DB-9 connector pinout, because this model doesn´t have any rf out 
coaxial connector. I hope someone can help about this issue.

Thanks in advance, José, EA1PX

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


[time-nuts] Uploads to my web site

2007-09-23 Thread Didier Juges
); SAEximRunCond expanded to false
Errors-To: [EMAIL PROTECTED] RETRY

For some reasons, ftp upload to my web site ftp.ko4bb.com is currently
unavailable (at least to me, you are free to try...)
 
My ISP is working on the problem, whatever that is.
 
If you have manuals to upload, just be patient, I hope to have the system
back up in in a day or so.
 
You can still download from the Manuals page via http:
 
http://www.ko4bb.com/ham,_radio/Manuals
 
Thanks
 
Didier KO4BB
 
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.


Re: [time-nuts] HP phase-noise measurement seminar coursebook

2007-09-23 Thread Brooke Clarke
); SAEximRunCond expanded to false
Errors-To: [EMAIL PROTECTED] RETRY

Hi John:

Some recollections and comments after reading the seminar paper.

When making automated mixer spur measurements using the HP 8566 spectrum 
analyzer and HP 8350B sweep generators, both under HP-IB control the phase 
noise of the 8350B was so bad you could not make a measurement.  With the RBW 
set very side you see just a line but as the RBW is narrowed down you start to 
see the filter shape and at narrower settings you see gibberish because the 
signal has FM noise.  Switching to synthesized sources allowed the RBW to be 
narrow enough to get the noise floor down where it needed to be to see the 
spurs.  That eye opener was my introduction to phase noise.

In the Phase Noise paper you'll notice that for a number of measurements the 
11729B is needed in addition to the 3047 and that when this is done often the 
automatic features of the 3047 are not used.  I.e. you don't need the 3047 for 
those measurements.  I ended up rolling my own automated phase noise systems 
based on the information in the 11729B manual that had an 11729B (usually with 
all the optional bands installed just to avoid chasing down the one that was 
needed) and one of the good phase noise HP signal generators along with the 
Rocky Mountain Basic computer.  All this would fit a 4 foot tall rack on 
wheels.  Made a number of them.

When talking about the straight spectrum analyzer method of measuring phase 
noise they discount the non synthesized analog spectrum analyzers and focus on 
the synthesized analog SAs.  But what's not mentioned are the synthesized 
digital spectrum analyzers like the HP 4395 and 4396.  These have true 1 Hz RBW 
settings and also have true RMS signal detection that avoids the corrections 
that are needed when an analog SA is used BUT they are not mentioned in the 
paper.  I think this is because they are made in the Kobe, Japan division of HP 
and are not U.S. made products.  Kobe is also where the LCR meters and 
impedance analyzers come from.

I've downloaded your Phase Noise software but have not yet tried it out on my 
4395A.  http://www.prc68.com/I/4395A.shtml
I think all that's needed is to enter 0 dB into the Noise Response window 
instead of the +2.5 db for a peak detector and -0.5 db for RBW correction 
needed for analog SAs.

Have Fun,

Brooke Clarke
http://www.PRC68.com
http://www.precisionclock.com
http://www.prc68.com/I/WebCam2.shtml 24/7 Sky-Weather-Astronomy Cam


John Miles wrote:
 ); SAEximRunCond expanded to false
 Errors-To: [EMAIL PROTECTED] RETRY
 
 This seminar was given June 14, 1985 at Red Bank, NJ.  Its handout covered
 pretty much every bit of information and lore HP had to impart on
 phase-noise measurement.  Anyone interested in PN measurement with 80s-era
 hardware (8566/8568/3585A, 11729B/C, 3047A, etc.) may want to download a
 copy of the course notes that I just scanned.
 
 http://www.ke5fx.com/HP_PN_seminar.pdf (124 pages, 7 MB)
 
 -- john, KE5FX
 
 
 ___
 time-nuts mailing list -- time-nuts@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@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.


Re: [time-nuts] HP phase-noise measurement seminar coursebook

2007-09-23 Thread John Miles
); SAEximRunCond expanded to false
Errors-To: [EMAIL PROTECTED] RETRY

 When making automated mixer spur measurements using the HP 8566 spectrum
 analyzer and HP 8350B sweep generators, both under HP-IB control
 the phase
 noise of the 8350B was so bad you could not make a measurement.
 With the RBW
 set very side you see just a line but as the RBW is narrowed down
 you start to
 see the filter shape and at narrower settings you see gibberish
 because the
 signal has FM noise.  Switching to synthesized sources allowed
 the RBW to be
 narrow enough to get the noise floor down where it needed to be
 to see the
 spurs.  That eye opener was my introduction to phase noise.

Yes, trying to measure anything with a sweeper is a good way to bring all
those abstract graphs and concepts into real-world focus. :)

 In the Phase Noise paper you'll notice that for a number of
 measurements the
 11729B is needed in addition to the 3047 and that when this is
 done often the
 automatic features of the 3047 are not used.  I.e. you don't need
 the 3047 for
 those measurements.  I ended up rolling my own automated phase
 noise systems
 based on the information in the 11729B manual that had an 11729B
 (usually with
 all the optional bands installed just to avoid chasing down the
 one that was
 needed) and one of the good phase noise HP signal generators
 along with the
 Rocky Mountain Basic computer.  All this would fit a 4 foot tall rack on
 wheels.  Made a number of them.

When I first got my 11729C, I intended to add a lot of code to PN.EXE to
drive it and the 8662A alongside the spectrum analyzer, but it didn't take
long to decide that I'd rather use the 11729 and 8662 manually.  The
quadrature-locking process is twitchy enough that automating it is probably
more trouble than it's worth.

 When talking about the straight spectrum analyzer method of
 measuring phase
 noise they discount the non synthesized analog spectrum analyzers
 and focus on
 the synthesized analog SAs.  But what's not mentioned are the synthesized
 digital spectrum analyzers like the HP 4395 and 4396.  These have
 true 1 Hz RBW
 settings and also have true RMS signal detection that avoids the
 corrections
 that are needed when an analog SA is used BUT they are not
 mentioned in the
 paper.  I think this is because they are made in the Kobe, Japan
 division of HP
 and are not U.S. made products.  Kobe is also where the LCR meters and
 impedance analyzers come from.

When did the 4390 analyzers come out, though?  They weren't in the '86
catalog, so they wouldn't have been mentioned in the 1985 seminar.

There are at least one or two errors in those notes, by the way... in at
least two places, they show graphs claiming the 8568A's noise floor is much
worse than it actually was.  It looks like the baseline traces that they
showed for the 3585A are actually the ones that apply to the 8568A.  I
corrected one graph by hand before I scanned it, but noticed another one
later.

 I've downloaded your Phase Noise software but have not yet tried
 it out on my
 4395A.  http://www.prc68.com/I/4395A.shtml
 I think all that's needed is to enter 0 dB into the Noise Response window
 instead of the +2.5 db for a peak detector and -0.5 db for RBW correction
 needed for analog SAs.

Sounds likely, if that's how it works.  (If you use PN.EXE with an 11729B or
11729C test set, the Noise Response factor needs to be -46 dB plus the
analyzer correction factor if any; the external-LO field should equal the
carrier being tested; and the external IF is 0 Hz.  That should make all the
numbers come out right.)

Please send me a baseline .PNP file if the SCPI-acquisition code actually
works on the 4395A!  Would be good to add it to the collection.

-- john, KE5FX


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


Re: [time-nuts] FE-5680A pinout

2007-09-23 Thread Rex
); SAEximRunCond expanded to false
Errors-To: [EMAIL PROTECTED] RETRY

Stan W1LE wrote:
 ); SAEximRunCond expanded to false
 Errors-To: time-nuts-bounces+rexa
 Hello Jose,

 Try:http://www.freqelec.com/prod_pdf/FEI%205680A%20Rb.pdf

 Frequency Electronics Inc.  =  FEI

 This .PDF may shed some light.

 Be sure of the options you have. base unit has 15 VDC, other options use 
 a different voltage
 for power.

 May have to go inside and solder a coaxial cable, to get the Ref. output 
 outside.

 If you need more help, send an email to the factory info desk.
 They were quite helpful to me.

 Stan, W1LE   FN41sr   Cape Cod
Seems there are lots of versions of the FE-5680A. Several of us bought 
versions a few years ago that did not match other known information 
(like the link above).

Here is a link to a message I posted back then about what I had learned 
by digging into my unit:
http://www.mail-archive.com/time-nuts@febo.com/msg01569.html

The ones we bought needed 5V in addition to 15V into the DB9 to operate. 
The 10 MHz output did come out on one of the pins on that connector. I 
think that output pin did match the general information.

In spite of the fact that tracing circuits on the board showed RS-232 
I/O pins on the DB9 and also on an internal header, and with several 
people searching for information, we never did figure out any way to 
adjust the frequency of our versions of the FE-5680A.

Stan's, post that he actually got a helpful response from FEI seems 
contrary to our attempts back then. I just did a quick browse of their 
web pages today and got a bunch of circular links that never produced an 
email address that looked like it might be worth a try. Maybe I missed 
something. Stan, care to share any pointers on how you found this 
'factory info desk'? I'm not trying to be sarcastic, just wondering, 
because everyone got blown off, back then, when we were looking for any 
clues on our units.

My impression of FEI is that they, like many other companies, cannot be 
bothered with talking with anyone who has not, or may not, give them 
lots of money. That is certainly their right, doesn't mean I like it. 
Also, it may be possible that if you find the right person, you might 
actually get good help. I did that with a different company a while 
back, by finding an engineer who helped a lot, and then later got a 
delayed reply from someone else telling me they had no time to tell me 
about old units, but if I would want to buy a few thousand to my specs 
they would be happy to help.

So, for the OP, there seem to be many versions of  these units, all 
labeled FE-5680A. There seems to be no absolute answer on pin-outs. If 
you are lucky, your unit will match one of the published configurations 
and be adjustable using RS-232 command sequences. For the ones we found, 
we only got them operational by reverse-engineering (results in the 
archive link), and I have never found any way to get mine really exactly 
enough on 10 MHz even though other units seem to be programmable, using 
published command sequences, over a wide range of frequencies.

-Rex, KK6MK


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


Re: [time-nuts] FE-5680A pinout

2007-09-23 Thread Peter Vince
); SAEximRunCond expanded to false
Errors-To: [EMAIL PROTECTED] RETRY

Hello José,

 I managed to get a Technical Manual Word document for the 5680A Option 2 
a
little while ago, and have put it (together with some5650A files) in a zip file
on my web site:

 http://www.barney-wol.net/private/5650Afiles.zip

Admittedly the model described has an RF coaxial output connector, but hopefully
there will be enough in common with your version that you can glean what you 
need
from that document.

  Regards,

   Peter Vince  (London, England)


On Sun Sep 23  1:11 , 'Jose Manuel' [EMAIL PROTECTED] sent:

I´m trying to test a Rb oscillator FE-5680A, but I don´t have information about
the DB-9 connector pinout, because this model doesn´t have any rf out coaxial
connector. I hope someone can help about this issue.

Thanks in advance, José, EA1PX


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