jmi...@pop.net said:
The phase noise plot gives you another view of the same loop
characteristics.
The PRS-10 has a huge spur at 60 Hz.
What were you using for a power supply? (Or what should I be asking?)
--
These are my opinions. I hate spam.
Magnus warned us about the use of very long time constant to act on
disciplining. In my opinion it is better to use quieter data coming from a
relatively fast sampling Kalman filter and correct as frequently as
possible then train the filter with long time constants.
On Fri, Aug 24, 2012 at 9:14
Hi Dave,
He lists hundreds of items, has 11 feedback and all of that is for low cost
items. I've actually reported his items to ebay before because of keyword and
brand name spamming. I wonder if this is why he no longer uses analogue of in
his titles. The items are overpriced and probably of
Hi all,
I have several HP/Agilent frequency counters 53151A (and 53152A) in my lab.
Several of them meanwhile show trigger problems.
I have tested the A and B channel between 5 MHz and 200 MHZ at three input
levels of -10 dBm, 0 dBm and +10 dBm.
Those with trigger problems show erroneous
From the datasheet:
A input 10Hz..125MHz min level 25mVrms (-19dBm)
B input min 50MHz, -20dBm
the problem is on A input only? Maybe 150MHz for the A input, being beyond
the official specifications, requires more signal on one counter than the
other. In the past they all were fine?
I have read your
Hi, Arthur,
I just found an old post of yours from Feb-2012, where you detailed,
essentially, converting an FEI/Zyfer 365 to a 565.
I'm going to be in the same boat very soon, as I just got hold of a 365.
Could I trouble you for a dump-file of the EPROM you mentioned, as well
as
Dear Paul,
Thank you for sharing your comments with me. I am back from a business trip and
found lots of answers to my concerns. The instrument continues in the green
with voltage indication within limits. You are right. After valuing the 5065a,
I rather play with the cheap Rbs.
Take care
Dear Bert,
Thank you for your always expert advise. I am receiving an HP 105B next week
and for sure I will be doing some disciplining with the Thunderbolt. I just
started to gather operational information on the 5065a to start a record. I
also have been reading about those methods and also
Dear Joe,
Thank you for your thoughts! The extra manual sheets will certainly be of a
great help. I will come back to you regarding the serial number of the
equipment and also the part number of the manual. I am still at the office.
Following the multiple advises, I am ordering a Brooke Shera
Edgardo
If you need a Shera board and parts I still have some extras. Contact me
off list.
Bert
In a message dated 8/24/2012 4:05:08 P.M. Eastern Daylight Time,
xe1...@amsat.org writes:
Dear Bert,
Thank you for your always expert advise. I am receiving an HP 105B next
week and for
Dear Azelio,
Wow! The TimePod is a beauty. I wrote to John Miles regarding payment options
and ordering instructions. Not planning to buy one at that price soon, but
better be safe than sorry. What a nice piece of equipment.
Are all of you guys obtaining your graphical information and Allan
Dear Chuck,
Thank you for your advise. Could you please kindly give me an example of such a
GPIB counter with phase measurement? HP model number? My 5065a has been running
with a beautiful green light for almost 72hrs. Glad to be back home and found
it warm and stable.
Take care!
Regards,
Hi Eduardo --
For longer term measurements (e.g., tau of an hour or more) a very nice
and inexpensive counter is the HP 5334A/B. I haven't looked recently,
but in the past I bought several off eBay for $150 or less. They are
fairly modern, compact (2U high), and don't have a noisy fan.
Dear John,
Thank you for such a detailed response. I will certainly look for Ebay
opportunities on the models you kindly advised. I had the TAPR unit on my mind
for several months but not sure about the way it could behave for these kind of
measurements. I see this hobby will last for a long
Hello Bruce and others,
Thanks for the clarifications. Thanks to your e-mail, the light went on about
the difference between slope gain g and voltage gain G.
I'm continuing to struggle with equation 3b.
We are all on the same page regarding this idea that when the clipper is at its
negative or
Hi Burt:
I just purchased four Shera boards from AA Engineering and four Motorola
Oncore UT+ receivers from TAPER.
I would be interested in any parts from you that would be available for
purchase.
I do not have a PIC programmer. I don't know where to find the firmware for
the PIC 16 F XXX chip.
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