Re: HP8920B Blowing Fuse
I would check at the input of the power supply for a shorted filter cap. or a shorted rectifier diode.
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By
Merchison Burke
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#151185
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Re: E5052A Power On Test (3.3V Bus Supply)
I was able to source some CS5208-1 from Kynix. Had good results ordering obsolete/obscure parts from them before: https://www.kynix.com/productdetails/5533925/onsemiconductor/cs52081gt3.html
Also
By
Kevin A.
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#151184
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Re: Manuals for an HP3456B DMM?
Yes. There was a time when a 3458A was on my list of expensive instruments
to acquire for my lab, but I ended up with the 3456A as an interim solution
and it has fulfilled my needs. I wish I could
By
Dave Daniel
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#151183
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Re: Manuals for an HP3456B DMM?
The 3458A is indeed the gold standard, and one of the few instruments to be made with all three names on the front.
They are great meters, even (especially?) by today's standards.
By
Dave McGuire
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#151182
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Re: Manuals for an HP3456B DMM?
They made 3455s, 3456s, 3457s and 3458s. I think but am not sure that these
were all "A" models, i.e., 3456A. My understanding is that the 3458A is the
(or one of) gold standard(s).
I own a
By
Dave Daniel
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#151181
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HP8920B Blowing Fuse
Friends,
My beloved HP8920B RF Communications Test Set started blowing the 5A AC fuse today.? It blows as soon as you push the power switch.? I am wondering if there is a common problem I could
By
Jeff Acree
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#151180
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Re: Manuals for an HP3456B DMM?
I had no idea they made a 3456B. Are you sure it isn’t a 3465B?
By
Steve Byan
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#151179
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Manuals for an HP3456B DMM?
Does anybody know where I can find manuals for an HP3456B DMM?
The HP site has a manual for the 3456A, how different is the 3456B from the 3456A?
Thanks,
BobH
By
BobH
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#151178
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Re: Success: Repair HP3455A Multimeter
Thank you for posting your story, some other 3455 owner will benefit someday.
Dave Wise
________________________________
Sent: Wednesday, April 2, 2025 11:49 AM
To:
By
Dave Wise
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#151177
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Success: Repair HP3455A Multimeter
Hi all,
I checked U16 the latch connected to the driver U5 with a scooe.
The output pin 15 ( connected to pin 9 of U5) was not stable and so I replaced U16.
Now the 3455 is working again.
At least no
By
Ralf Rosche
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#151176
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Re: hp-410b, early manual
Thanks Ron, that is the oldest 410B manual I've seen. It's for early non-prefixed Serial Number 401 through 7228.
Dave Wise
________________________________
Sent: Wednesday, April 2, 2025 10:11
By
Dave Wise
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#151175
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hp-410b, early manual
In the course of refurbishing an old -410b, I was a bit confused in that my unit does not correspond to a manual stored here in our Files section.? So, I purchased a manual online and discovered that
By
Ron na2o
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#151174
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Re: LCR Meter E4980A Power On Test Fail
Thanks Nigel, I have updated the firmware from A.04.00 to A.05.00. Unfortunately, the failure persisted. Since it was able to passed all other tests, except CPU[2]: 16 tests failed, it seems like a
By
KC Chong
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#151173
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RF Alignment Failure in Agilent CXA signal analyzer N9000A
I have Agilent CXA Signal Analyzer N9000A, I'm getting these errors, please help.
I referred manual and it suggested to check 50Mhz with -24dB, But when I check in my equipment its showing 50Mhz with
By
ipother6@...
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#151172
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Re: Request HDD image for Agilent Infiniium DCA 86100C mainframe
I'm still looking..
By
Alex T
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#151171
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Re: HP83712B EPROM content
No, it is not the same as for the 83732A. I tried but it is not working properly.
By
tom_iphi
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#151170
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Re: HP83712B EPROM content
"tom_iphi via groups.io" <iphi@...> writes:
ko4bb has
https://www.ko4bb.com/getsimple/index.php?id=manuals&dir=HP_Agilent_Keysight/HP_83732A_Synthesized_Signal_Generator
Not sure
By
Sven Schnelle
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#151169
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HP83712B EPROM content
Hi,
does anyone happen to have the data of EPROMs U7 and U24 of the HP83712B?
I seem to have lost data...
Tom
By
tom_iphi
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#151168
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Re: HP 85047A test set on 8753A analyzer -- switch control board jumpers to retrofit for opt 009 (mechanical switch)
[email protected]> wrote:
I have looked at the circuit diagram of the 85046A, and noticed a capacitor
value changed between the mechanical and electronic relays. Could that be
the problem?
Dave
By
Dr. David Kirkby, Kirkby Microwave Ltd
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#151167
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Re: E5052A Power On Test (3.3V Bus Supply)
Appreciate the suggestion. I reinstalled the A3 and tried cycling all the PSU connectors, including the motherboard one. I also brushed a tiny dab of Deoxit D100 on each male pin and cycled the
By
Kevin A.
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#151166
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