Re: hp8640B_CR17_CR20_Hot
Armin,
From my notes: almost a quarter of a century ago I had a similar failure. Just replaced the power diodes (3A) and all went fine. The A/B23 go to SS 23: the -5.2 V regulator. Let me know if you need more info. Good luck, 73 de
Harke
On Friday, April 17, 2020, 12:41:20 PM GMT+2, Armin Roesch <armin.roesch@...> wrote:
Main Fuse blown.
Fuse replaced >> ON >> generator shows frequency and level correct.
After 10 seconds smells very strange.
>> OFF
It smells that C6 22nf (parallel main filter output) became faulty.
>> Removed
>> ON
All voltages seems to be correct.
>> Then smoke from the rectifier board
>> OFF
Remove rectifier board.
CR17 fall of the board!
CR20 looks like it was very hot
No idea where output A/B 23 is for? Did not found the goal of that voltage.
Any idea?
Thanks for hints.
Armin
HB9MFL
|
Main Fuse blown.
Fuse replaced >> ON >> generator shows frequency and level correct.
After 10 seconds smells very strange.
>> OFF
It smells that C6 22nf (parallel main filter output) became faulty.
>> Removed
>> ON
All voltages seems to be correct.
>> Then smoke from the rectifier board
>> OFF
Remove rectifier board.
CR17 fall of the board!
CR20 looks like it was very hot
No idea where output A/B 23 is for? Did not found the goal of that voltage.
Any idea?
Thanks for hints.
Armin
HB9MFL
|
Re: HP8562A Errors 304,335,317,333
hello Stu if you look on A2 on the side you see the LEDs for the PSU. All should be LIT. I am sure this is not a PSU issue.
If you work through the 300/600Mhz chain with an osilloscope you can check where the signal dissapears. I remember the 600Mhz is made in a doubler and if signal is too small you have not enough for doubling to 600Mhz.
best regards Peter
Peter,
?
Ok from schematic I can see the 600MHz Oscillator ¨¤ Buffer
¨¤ /2 = 300Mhz
¨¤ Offset Loop Buffer. Is that correct?
Is it the /2 device your talking about? The whole board seems to be a 600Mhz PLL with 10Mhz ref at source.
Correct me if I¡¯m wrong.
?
I still think something burn¡¯t out although th PSU looks clean.
Just prepping up before getting My hands dirty..
?
Stu.
?
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Show quoted text
From: [email protected] <[email protected]>
On Behalf Of Peter Hansen
Sent: 16 April 2020 20:34
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP8562A Errors 304,335,317,333
?
Hello Stu I must correct my self. The 8562A is before use og MMIC. area is still the same. It is just discrete amplifiers. Order a schematics from Artic media ant look for Radio Frequency module look in the page with
the generation of 300/600Mhz.
Reason why you can?t measure anything is because the 600Mhz is used for third mixer.
Peter,
?
Which board are we talking about ?
Still looking for the LED PSU indicators on the A2 card.
?
Presume you are referring RF board..?
Is this an off the shelf part or HP proprietary?
?
Thanks,
?
Stu.
?
?
Hello Group a TAM is not needed in this case. It is simply a MMIC in the 300/600Mhz chain that is bad.
I believe Harke has a Hp85629A TAM for sale.
best regards Peter Hansen
I suspect you might be able to rent the TAM from one of the ETE rental outfits for a month or so for not a horrible price.? I believe that Tam Hanna has one or two for sale, I may purchase one from him for my own use with my 8562A.
Don Bitters
|
Re: HP8562A Errors 304,335,317,333
Peter, ? Ok from schematic I can see the 600MHz Oscillator ¨¤ Buffer ¨¤ /2 = 300Mhz ¨¤ Offset Loop Buffer. Is that correct? Is it the /2 device your talking about? The whole board seems to be a 600Mhz PLL with 10Mhz ref at source. Correct me if I¡¯m wrong. ? I still think something burn¡¯t out although th PSU looks clean. Just prepping up before getting My hands dirty.. ? Stu. ?
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Show quoted text
From: [email protected] <[email protected]> On Behalf Of Peter Hansen
Sent: 16 April 2020 20:34
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP8562A Errors 304,335,317,333? Hello Stu I must correct my self. The 8562A is before use og MMIC. area is still the same. It is just discrete amplifiers. Order a schematics from Artic media ant look for Radio Frequency module look in the page with the generation of 300/600Mhz. Reason why you can?t measure anything is because the 600Mhz is used for third mixer.
Peter, ? Which board are we talking about ? Still looking for the LED PSU indicators on the A2 card. ? Presume you are referring RF board..? Is this an off the shelf part or HP proprietary? ? Thanks, ? Stu. ? ? Hello Group a TAM is not needed in this case. It is simply a MMIC in the 300/600Mhz chain that is bad. I believe Harke has a Hp85629A TAM for sale. best regards Peter Hansen
I suspect you might be able to rent the TAM from one of the ETE rental outfits for a month or so for not a horrible price.? I believe that Tam Hanna has one or two for sale, I may purchase one from him for my own use with my 8562A.
Don Bitters
|
Re: HP 8656A A6 board U1 1020-2933 is bad
Joking apart, there seems to have been a minor dump of similar Plessey
Semi' parts on a certain web auction site recently.?? I was looking at a
similar part number, but a divide by 10/11 chip last night.? More out of
curiosity than anything else.
It's always worth putting the OEM part number into Google, and see what
falls out.? You may get a pleasant surprise, sometimes...? Even try the
HP assembly number, seems people are always scrapping HP stuff somewhere
and "parting out" the assemblies.
73.
Dave (G0WBX)
--
Created on and sent from a Unix like PC running and using free and open source software:
|
Hello all,
BTW: I am healthy. Well as healthy as a 65 year old senior citizen with Fibromyalgia can be. I do not have the Seasonal Flu, the Kung Flu, Measles, Smallpox, Rabies, or anything else that can hurt someone. I do have old age but we know that only time can give that to you.
GOD Bless and Thanks,
rich!
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On 4/16/2020 7:23 PM, Richard R. Pope wrote: Dave,
Sorry about that. I had Fred on the brain. I live in Reedsburg, WI near the Dells.
GOD Bless and Thanks,
rich!
On 4/16/2020 7:20 PM, Dave Smith W6TE wrote:
Where are you located?
-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Richard R. Pope
Sent: Thursday, April 16, 2020 5:10 PM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] FS: HP 16700A LA!
Hello all,
This is an update. My insurance company has declared my car a total loss. Please help me out and help this sick old man to stay in a car by buying my 16700B and all of the accessories.
GOD Bless and Thanks,
rich!
On 4/11/2020 11:18 PM, Richard R. Pope wrote:
Hello all,
I hit a deer in WY with my brand new car. They are probably going
to total it. My GAP insurance will pay off the loan but I am probably
going to be left on foot. I am getting out of working on electronics.
I have a HP 16700A LA and 16700B expansion unit for sale. There are 5
16555D cards in the 16700A. The interconnect cable for the the 16700B
is here. There are five pairs of cables for the 16555Ds. There are
terminators for the cables and clips. The HDD in the 16700A has been
upgraded to a Seagate ST 318417N and there is an external HDD and case
connected to the system for extra storage. There is also a SCSI CD-Rom
drive and a floppy drive installed in the 16700A. The latest OS has
also been installed.
It will take two very large boxes and a smaller box to packaged it
up for shipping. So shipping will be expensive. Local pick up is
welcome. It operates and all of the cards are good. I will guarantee
no DOA. Please make me a fair offer and help me out with this. I will
take Paypal F&F, Money Order, Cashiers Check, Personal Check but it
will be held until the check clears.
GOD Bless and Thanks,
rich!
|
Re: HP 8656A A6 board U1 1020-2933 is bad
Hey Richard, Just sent you an email to see which Plessey chip you need. Please verify!
73
Jeff Kruth
WA3ZKR
In a message dated 4/16/2020 11:54:05 PM Eastern Standard Time, rhall2@... writes:
George,
Thank you for your reply. After a total of 6 hours searching I just found a seller on the auction site listing Plessey Prescaler/Frequency divider IC's. In the description he listed theSP6806B. He stated that the IC's were NOS from Watkins-Johnson and he is located in Morehead Kentucky, United states. The price is $9.50 each IC. I ordered 2 and will replace the bad one in about 2 weeks.
This may be the last problem for the 8656A. I will then move on to the stack of more than 50 pieces of test equipment. That is not counting about 30 Tektronix 7000 plugins.
Richard? WB4RSO
|
Re: HP 8656A A6 board U1 1020-2933 is bad
I think I know too!?
Daun ;-)
Get
From: Dave McGuire
Sent: Thu Apr 16 23:55:33 EDT 2020
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP 8656A A6 board U1 1020-2933 is bad
Morehead, KY? Bet I know who that is. He will pipe up soon I think..
-Dave
On 4/16/20 10:19 PM, Richard Hall wrote:
George,
Thank you for your reply. After a total of 6 hours searching I just
found a seller on the auction site listing Plessey Prescaler/Frequency
divider IC's. In the description he listed theSP6806B. He stated that
the IC's were NOS from Watkins-Johnson and he is located in Morehead
Kentucky, United states. The price is $9.50 each IC. I ordered 2 and
will replace the bad one in about 2 weeks.
This may be the last problem for the 8656A. I will then move on to the
stack of more than 50 pieces of test equipment. That is not counting
about 30 Tektronix 7000 plugins.
Richard? WB4RSO
|
Re: HP 8656A A6 board U1 1020-2933 is bad
Morehead, KY? Bet I know who that is. He will pipe up soon I think..
-Dave
toggle quoted message
Show quoted text
On 4/16/20 10:19 PM, Richard Hall wrote: George,
Thank you for your reply. After a total of 6 hours searching I just
found a seller on the auction site listing Plessey Prescaler/Frequency
divider IC's. In the description he listed theSP6806B. He stated that
the IC's were NOS from Watkins-Johnson and he is located in Morehead
Kentucky, United states. The price is $9.50 each IC. I ordered 2 and
will replace the bad one in about 2 weeks.
This may be the last problem for the 8656A. I will then move on to the
stack of more than 50 pieces of test equipment. That is not counting
about 30 Tektronix 7000 plugins.
Richard? WB4RSO
--
Dave McGuire, AK4HZ
New Kensington, PA
|
Re: HP 8656A A6 board U1 1020-2933 is bad
Kuba,
I was thinking about that type of a solution. That would be a complete new learning experience for me. I am expecting to soon need that solution in the future.
Richard WB4RSO
|
Re: HP 8656A A6 board U1 1020-2933 is bad
George,
Thank you for your reply. After a total of 6 hours searching I just found a seller on the auction site listing Plessey Prescaler/Frequency divider IC's. In the description he listed theSP6806B. He stated that the IC's were NOS from Watkins-Johnson and he is located in Morehead Kentucky, United states. The price is $9.50 each IC. I ordered 2 and will replace the bad one in about 2 weeks.
This may be the last problem for the 8656A. I will then move on to the stack of more than 50 pieces of test equipment. That is not counting about 30 Tektronix 7000 plugins.
Richard? WB4RSO
|
Re: HP 53310A - Why did I not know about this sooner?
Go get one. They are fantastic instruments, if little understood.
Drink the modulation domain kool-aid. B-)
Mark Kahrs, are you listening??
-Dave
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On 4/16/20 11:10 PM, Jim Ford wrote: Yeah, cool!? Except now I want one!
Jim Ford
------ Original Message ------
From: "Tam Hanna" <tamhan@... <mailto:tamhan@...>>
To: [email protected]
<mailto:[email protected]>
Sent: 4/16/2020 7:15:05 AM
Subject: Re: [HP-Agilent-Keysight-equipment] HP 53310A - Why did I not
know about this sooner?
Hello,
two videos:
a) what it is for
b) PSU repair, mandatory:
Tam
With best regards
Tam HANNA
Enjoy electronics? Join 15k7 other followers by visiting the Crazy Electronics Lab at
On 2020. 04. 16. 15:13, [email protected] wrote:
Hal,
Congrats on joining the modulation domain!
As you know already, it¡¯s really a sleeper. Although it works very
well for viewing any sort of frequency modulated waveform, my
personal favorite use for it is as an extremely precise counter.
There is a reason that it¡¯s called a frequency microscope.?
FYI, adding the deep memory option is quite easy. If you search
around you¡¯ll find instructions. All you need are 4 more SRAMs and to
move a couple of jumpers after installing them.
Sean
On Thu, Apr 16, 2020 at 05:34 AM, Harold Foster wrote:
All:
Picked one of these, with Opt 31, a while back and... wow.? Just,
wow.? The more that I research it and play around with it the
more impressed I am with it's capabilities and usefulness.? After
reading a few other owner's experiences with it a common theme
is; "How did I miss knowing about this?? Why is it not well
known?" - very much my reaction.? I would think that if any one
group of people might be aware of it, those here would be the
ones.? But here, as elsewhere, there are very few mentions about
it.? Anyone else use one of these?? Usage tips or other information?
Just curious,
Hal
Datasheet:
--
Dave McGuire, AK4HZ
New Kensington, PA
|
Re: HP 3478A Ohms Calibration
Hi George,
?
I am looking for the front panel input connectors for the HP
3456A. One of mine is broken off.
?
Thanks
Gary? K4FMX
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Hello to all in this group,
Thanks for being understanding during these
trying times.? I have not yet returned to my office in Minnesota where
the Red Devil resistors are so as you can see, I have not been able to fulfill
my promise to you as I am still in Loveland, Colorado.??
I
have orders in to get a Loveland cal on all of my 3458A DMMs which I was
planning of have performed while in Loveland being that my office here is just
3 miles from the Keysight facility.? That does not look like it is going
to happen so this will all have to wait until Keysight cal lab is back in
business.? I have upgraded the CAL RAMs on my 3458A meters as well as
some of the other parts related to the high stability OHMS and voltage
reference internal to the meters.
The good news is that I have gone
through my inventory here in Colorado and have found considerably more items
than I remember having.? I have parts and boards and many case parts
related to the following instruments and related I/O cards:
3421A, 3455A,
3456A, 3457A, 3458A, 3468A/B 3476B, 3478A, 3488A, 970 probe meter,? some
oscilloscopes 54501, 54511 and spectrum analyzers? 3582, 3585, 8754A,
8753A? and all the I/O cards for the 3488A:? 444XX series(XX= 70,
71,72,73,77,78, 91,92?and I/O cars for the 3457A.??
I have a
large supply of the Aromat relays(new unused) that I used in the design of the
4447X series of I/O cards for the 3488 should you need to replace any as well
as other components used on the boards
The 3468 and 3478 meters and
related axial leaded and ICs and custom hybrids I designed are also in my
inventory and are in sufficient supply to fill anyone's needs. In fact, the
SAFT and ETERNACELL 3.0v lithium back up battery for the cal RAM some were
looking for earlier are here in Colorado.? I can make them available at a
reasonable price of $2.00 each.? All of them measure 3.03v or
better.
Thank you and I will notify group when I am back in Minnesota
regarding the Red Devil resistors.
I can ship other parts from Colroado if
needed.? I am scheduled to hit the road to Minnesota once I load up the
truck with the inventory on the 28th of April.? Hard to believe I have
been here almost 2 months when the initial plan was to be here 2
weeks.
George Hnatiuk
|
Re: HP 53310A - Why did I not know about this sooner?
Yeah, cool!? Except now I want one!
Jim Ford
------ Original Message ------
Sent: 4/16/2020 7:15:05 AM
Subject: Re: [HP-Agilent-Keysight-equipment] HP 53310A - Why did I not know about this sooner?
Hello,
two videos:
a) what it is for
b) PSU repair, mandatory:
Tam
With best regards
Tam HANNA
Enjoy electronics? Join 15k7 other followers by visiting the Crazy Electronics Lab at
Hal,
Congrats on joining the modulation domain!
As you know already, it¡¯s really a sleeper. Although it works
very well for viewing any sort of frequency modulated waveform,
my personal favorite use for it is as an extremely precise
counter. There is a reason that it¡¯s called a frequency
microscope.?
FYI, adding the deep memory option is quite easy. If you search
around you¡¯ll find instructions. All you need are 4 more SRAMs
and to move a couple of jumpers after installing them.
Sean
On Thu, Apr 16, 2020 at 05:34 AM, Harold Foster wrote:
All:
Picked one of these, with Opt 31, a while back and... wow.?
Just, wow.? The more that I research it and play around with it
the more impressed I am with it's capabilities and usefulness.?
After reading a few other owner's experiences with it a common
theme is; "How did I miss knowing about this?? Why is it not
well known?" - very much my reaction.? I would think that if any
one group of people might be aware of it, those here would be
the ones.? But here, as elsewhere, there are very few mentions
about it.? Anyone else use one of these?? Usage tips or other
information?
Just curious,
Hal
Datasheet:
|
Re: Advantest R3767BH VNA date+time setting
On Fri, Apr 17, 2020 at 02:58:01AM +0000, Jim Ford wrote: Are you guys familiar with the existance of [email protected] ? There is a community of folks there who might help... Hi, Jesse.
A friend has a similar VNA, and for some reason I have the manual. I
didn't see anything in the index about setting the time and date, but I
could have missed it. Here's a .pdf if you don't already have it.
HTH.
Jim Ford
------ Original Message ------
From: "Jesse Lackey" <jesse@...>
To: [email protected]
Sent: 4/16/2020 5:06:24 PM
Subject: Re: [HP-Agilent-Keysight-equipment] Advantest R3767BH VNA
date+time setting
Hi Stan, there isn't an enter key, but there is X1. No dice, it is still
Jan 1 1970. Tx for the thought tho!
J
Stan wrote:
Hi Jesse,
Although I'm not familiar with your particular VNA, I've found with a lot
of T&M gear that when setting the date, time, or any other numeric entry,
you need to press the Enter key or its equivalent (e.g., Hz, x1, etc.)
after you key in the new value. Otherwise, the value will not be updated.
Regards,
Stan
-- Dave Emery N1PRE/AE, die@... DIE Consulting, Weston, Mass 02493 "An empty zombie mind with a forlorn barely readable weatherbeaten 'For Rent' sign still vainly flapping outside on the weed encrusted pole - in celebration of what could have been, but wasn't and is not to be now either."
|
Re: Advantest R3767BH VNA date+time setting
Hi, Jesse.
A friend has a similar VNA, and for some reason I have the manual. I didn't see anything in the index about setting the time and date, but I could have missed it. Here's a .pdf if you don't already have it.
HTH.
Jim Ford
toggle quoted message
Show quoted text
------ Original Message ------ From: "Jesse Lackey" <jesse@...> To: [email protected]Sent: 4/16/2020 5:06:24 PM Subject: Re: [HP-Agilent-Keysight-equipment] Advantest R3767BH VNA date+time setting Hi Stan, there isn't an enter key, but there is X1. No dice, it is still Jan 1 1970. Tx for the thought tho!
J
Stan wrote:
Hi Jesse,
Although I'm not familiar with your particular VNA, I've found with a lot of T&M gear that when setting the date, time, or any other numeric entry, you need to press the Enter key or its equivalent (e.g., Hz, x1, etc.) after you key in the new value. Otherwise, the value will not be updated.
Regards,
Stan
|
Re: HP 53310A - Why did I not know about this sooner?
Hi John,
Not familiar with the internal software in the 53310 but wanted to ask if you were aware of a user's guide specifically for option 031.? If not, it is downloadable at:
Greg
|
Re: HP 8656A A6 board U1 1020-2933 is bad
And modern ECL divider is probably a good substitute, except it will need an adapter of some sort for the pin out. At those frequencies, the 100K and higher families will be fine. DigiKey sells a bunch of chips that could be a replacement (other than the pinout).
Cheers, Kuba
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16 apr. 2020 kl. 9:44 em skrev george edmonds via groups.io <G6HIG@...>:
? Hi Richard
HP part number 1820-2933 is a Plessey Semiconductors SP8606B. This is a 1.3GHz divide by two ECL Logic device.
Plessey Semiconductors were manufactured in Swindon UK.
Looks like your A6 Board was manufactured and designed at the HP plant in Scotland.
Now probably hard to come by.
George G6HIG On Friday, 17 April 2020, 00:14:31 BST, Richard Hall <rhall2@...> wrote:
?I am repairing a HP 8656A that has an A6 board from an HP 8606B in it.
Chip U1 on board A6 has an HP part number of 1820-2933 and the chip is labeled SP8606B.
This chip is bad.
Question 1. Is SP8606B the correct part number for the HP part number of 1820-2933?
Question 2. I have searched for the? SP8606B chip and can not find one for sale without asking for a quote from the obsolete part vendors. Is there an available substitution part number for this chip?
Thank you
Richard Hall
WB4RSO
|
Re: Application Note 122: EMI Measurement Procedure
I just checked my banana box of appnotes* and found AN122.
Weirdly, the spine just says "EMI Measurement Procedure" and the big "AN 122" on the front cover is an afterthought, put on there with a slightly skewed rubber stamp.
Subtitled "Calibration and Operation of the HP 851B/8551B Spectrum Analyzer to Measure Electromagnetic Interference"
1st page: "02464-1 Printed February 1968"
154 pages total.
Comes with a Business Reply mail postcard "Please reserve my copy of HP App Noe 63E - making fast emi measurements with a spectrum analyzer". I might fill that out, assuming HP is still at 1501 Page Mill Road and Alan Steiner is still with the Microwave Division.
And like a cereal packet, there's a bonus - a "8511/851 Spectrum Analyzer RFI/EMI Calibration Slide Rule" in on envelope glued to the inside back cover.
Sweet!
* Saw 4 banana boxed of "service manuals" being auctioned on the NZ auction Site (eBay is 2nd fiddle here in NZ), looking at the pictures spotted an HP logo on top of one of the piles - hey, that looks like an HP App Note! - got them for a song - a nationwide courier company owed me a favour (long story) and I got them shipped for free. 1 box of app notes (possibly from the estate of someone high up at HP Australia?), and 3 boxes of service manuals for tape decks, electric organs etc etc. Long tertm plan will be to scan the ones that aren't there already.
Cheers,
Andy
ZL3AG
|
Re: HP 8656A A6 board U1 1020-2933 is bad
Hi Again
There is a seller in Switzerland with three available, but sit down first, they will cost about $60 each plus shipping.
George G6HIG On Friday, 17 April 2020, 00:14:31 BST, Richard Hall <rhall2@...> wrote:
?I am repairing a HP 8656A that has an A6 board from an HP 8606B in it.
Chip U1 on board A6 has an HP part number of 1820-2933 and the chip is labeled SP8606B.
This chip is bad.
Question 1. Is SP8606B the correct part number for the HP part number of 1820-2933?
Question 2. I have searched for the? SP8606B chip and can not find one for sale without asking for a quote from the obsolete part vendors. Is there an available substitution part number for this chip?
Thank you
Richard Hall
WB4RSO
|
Armin Roesch
Dave McGuire