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Re: Type of coax for Impedance Analyzer Test Fixtures
Hi Peter: The Open/Short is to remove parasitic effects at the terminals of the test fixture. See the Impedance Handbook section "Compensation function" paragraph 2.4.6 in my version. This is
By Brooke Clarke · #95892 ·
Agilent E5062A Not Booting-Up
Dear Group - Agilent E5062A Network Analyser Powers-Up and Agilent Technologies Logo appears on Screen but will not continue to Measuring Screen.CMOS Battery has been replaced and Date/Time Reset and
By MARC CHRISTIAN · #95891 ·
Re: E4401B No 50MHZ Cal signal
But if the C448 cap had failed short as you stated, at least it certainly would be part of the bigger problem.
By Alex · #95890 ·
Re: E4401B No 50MHZ Cal signal
Without reading through all of this again... you have a decent scope, correct? You should be able to measure the 50 MHz cal signal with that. (around 20 mV or so) And also follow its path. I have yet
By Mark Bielman · #95889 ·
Re: E4401B No 50MHZ Cal signal
Typo: That sentence should read: Running without the cap, I notice that the noise floor is higher than it should be, and that changes to levels of the input signal DO NOT cause corresponding changes
By Michael Williams · #95888 ·
Re: E4401B No 50MHZ Cal signal
Nope. While the scope functions with the cap removed, putting a good replacement back in reproduces the failure. I suspect that the cap is part of an attenuator/filter. Removing it is raising the test
By Michael Williams · #95887 ·
Re: hp3586a selective voltmeter jammed
I have an HP8165A which had the same problem. The backup battery behind the front panel was dead. Replacing the battery cured the problem. --- This email has been checked for viruses by AVG.
By Merchison Burke · #95886 ·
Re: E4401B No 50MHZ Cal signal
Mike - The cap (C448) was not the problem? Rats.
By Mark Bielman · #95885 ·
Re: My $25 "In Poor Shape" 3468A has arrived
Alex, Most definitely you need to ZERO cal the ohms ranges.? ?You can do that with confidence that the gain cals will not be affected..? ?ZERO cal the ohms.? Make sure after installing the
By [email protected] · #95884 ·
Re: Type of coax for Impedance Analyzer Test Fixtures
I just noticed in an earlier post the desire for a cable set in a common sheath. You can use salvaged VGA monitor cables - the kind that are "better" quality and fatter, that have coax rather than
By Ed Breya · #95883 ·
Re: E4401B No 50MHZ Cal signal
Sadly, C448 was not the actual culprit. When I replaced what I thought was the defective cap, the malfunction returned. At this point, I suspect the 1st IF mixer, or the amplifier post-mixer. I am
By Michael Williams · #95882 ·
Re: Type of coax for Impedance Analyzer Test Fixtures
The zero and open setups should compensate for cable lengths and fixture characteristics - up to a point. At higher frequencies, and in certain instruments, it may be that specific cable types and
By Ed Breya · #95881 ·
Re: E4401B No 50MHZ Cal signal
On Mon, Apr 15, 2019 at 07:43 AM, ArtekManuals wrote: > > The CLIP stands for "Component Level Information Package" Beginning in > the 1990's ( for the most part) HP/Agilent stopped publishing what we
By Alex · #95880 ·
Re: E4401B No 50MHZ Cal signal
For what it is worth, and to give you guys an idea I have a good background servicing Motorola and other brands of LMR 2-way radio equipment for over 40 years. I use a R2001H service monitor on the
By Alex · #95879 ·
Re: E4401B No 50MHZ Cal signal
The CLIP stands for "Component Level Information Package" Beginning in the 1990's ( for the most part) HP/Agilent stopped publishing what we all used to know as full up service manuals. At that point
By Dave / NR1DX · #95878 ·
Re: E4401B No 50MHZ Cal signal
Thank you Mark and Mike for the insightful answers. Unfortunately I don't have access to this particular unit yet, I only saw the error message on one of the pictures sent to me. The selling price is
By Alex · #95877 ·
Re: Type of coax for Impedance Analyzer Test Fixtures
The data is in the impedance handbook. It is coax. I think its a polyethylene dielectric. Its not obvious where the 1 m is measured from. I do have a couple of original test leads / fixtures so can
By Dr. David Kirkby from Kirkby Microwave Ltd <drkirkby@...> · #95876 ·
Re: Type of coax for Impedance Analyzer Test Fixtures
Is this a guess or do you have real knowledge? Do you think it is microphone cable? Peter [email protected]> wrote:
By peter bunge · #95875 ·
Wanted: HP 10509A Loop Antenna, part of HP 117A VLF Comparator
Wanted: HP 10509A Loop Antenna in good physical condition, don't care if preamplifier is serviceable. Contact me directly at whitreeve@... with details. Whit
By WReeve · #95874 ·
Re: Type of coax for Impedance Analyzer Test Fixtures
RG-174A/U shows as 50 ohms 102 pF/m That's pretty darn close!
By Peter Gottlieb · #95873 ·