Re: Hewlett Packard 5335A Universal Frequency Counter Fail Massage 5.1
Thank You?Tobias I will take the front panel apart and will do what You have?suggested. Sal
On Saturday, September 12, 2020, 03:31:06 p.m. EDT, Tobias Pluess <tobias.pluess@...> wrote:
Hi Sal
I also had a 5.1 error on my 5335A.
I measured all voltages etc on the power supply and everything looked fine, but I still got the 5.1 error.
I had to search for the problem for quite a while and was unable to locate it; but luckily, I got access to a thermal camera and with the aid of this, I found a shorted tantalum capacitor on the input board mounted at the front panel. I don't remember exactly which board it was, but right behind the front panel, there are these input boards where the special Schmitt trigger ASIC is. Check all the blue tantalum "pill style" capacitors on these boards. Maybe you have a similar issue like I had.
BR
Tobias
HB9FSX
|
Re: Hewlett Packard 5335A Universal Frequency Counter Fail Massage 5.1
Thank You Orin any help is very much appreciated as I am getting old nearly 80 and my mind is not serving me very well. Again thank You for taking the time if You come up with any suggestions it will be very much appreciated.?
On Saturday, September 12, 2020, 03:14:20 p.m. EDT, CORNACCHIA via groups.io <corcsal@...> wrote:
Hi Orin, Thank You for the info I will look it over very carefully all voltages appear to be in order I have taken the relay out of the socket and checked and cleaned it seems OK but I will keep working at it. Sal C. Cornacchia
On Saturday, September 12, 2020, 02:41:19 p.m. EDT, Greg Muir via groups.io <big_sky_explorer@...> wrote:
Sal,
?
I have a 5335A that has been sitting on the shelf that has been awaiting attention for some time.? It was once fully functional but developed a couple of error messages unexpectedly.? And, as I indicated, I still have to open it up and look around to see what is happening.
?
When first powered up there is a fail message 4.6 (MRC COUNTING PROBLEM IN REG-E OR T).? If any button is pressed the fail messages changes to 5.1 (START INTERPOLATOR PROBLEM) and the display and other indicators begin to flash erratically.
?
Perusing the schematics I get the impression that there is possibly a clocking problem around the Multiple Register Counter (MRC) U6 that also fees the Interpolator counters via the start-stop control circuitry.? All of these items use the 10 MHz clocking.
?
If you have the manual (mine is P/N 05335-90021 3rd edition March 1983) I recommend starting at the troubleshooting flowchart on page 8-57.? It will lead you to the proper following pages describing the troubleshooting techniques plus voltages & waveforms.? A good overview of the whole unit is shown in the block diagrams on pages 8-97 (for options 010, 020 & 030) or page 8-99 (if your unit includes option 040).
The circuitry that I referenced earlier is located in the upper right corner of these block diagrams in the ¡°A4 MAIN LOGIC¡± block.
?
Sorry that I cannot assist any further since I have not had the time to really investigate the failures this unit is showing but I hope that what I have written will serve as some rudimentary guidance should you have to dig deeper into locating your problem.
?
Regards,
?
Greg
|
Re: Hewlett Packard 5335A Universal Frequency Counter Fail Massage 5.1
Hi Sal
I also had a 5.1 error on my 5335A.
I measured all voltages etc on the power supply and everything looked fine, but I still got the 5.1 error.
I had to search for the problem for quite a while and was unable to locate it; but luckily, I got access to a thermal camera and with the aid of this, I found a shorted tantalum capacitor on the input board mounted at the front panel. I don't remember exactly which board it was, but right behind the front panel, there are these input boards where the special Schmitt trigger ASIC is. Check all the blue tantalum "pill style" capacitors on these boards. Maybe you have a similar issue like I had.
BR
Tobias
HB9FSX
|
Re: Hewlett Packard 5335A Universal Frequency Counter Fail Massage 5.1
Hi Orin, Thank You for the info I will look it over very carefully all voltages appear to be in order I have taken the relay out of the socket and checked and cleaned it seems OK but I will keep working at it. Sal C. Cornacchia
On Saturday, September 12, 2020, 02:41:19 p.m. EDT, Greg Muir via groups.io <big_sky_explorer@...> wrote:
Sal,
?
I have a 5335A that has been sitting on the shelf that has been awaiting attention for some time.? It was once fully functional but developed a couple of error messages unexpectedly.? And, as I indicated, I still have to open it up and look around to see what is happening.
?
When first powered up there is a fail message 4.6 (MRC COUNTING PROBLEM IN REG-E OR T).? If any button is pressed the fail messages changes to 5.1 (START INTERPOLATOR PROBLEM) and the display and other indicators begin to flash erratically.
?
Perusing the schematics I get the impression that there is possibly a clocking problem around the Multiple Register Counter (MRC) U6 that also fees the Interpolator counters via the start-stop control circuitry.? All of these items use the 10 MHz clocking.
?
If you have the manual (mine is P/N 05335-90021 3rd edition March 1983) I recommend starting at the troubleshooting flowchart on page 8-57.? It will lead you to the proper following pages describing the troubleshooting techniques plus voltages & waveforms.? A good overview of the whole unit is shown in the block diagrams on pages 8-97 (for options 010, 020 & 030) or page 8-99 (if your unit includes option 040).
The circuitry that I referenced earlier is located in the upper right corner of these block diagrams in the ¡°A4 MAIN LOGIC¡± block.
?
Sorry that I cannot assist any further since I have not had the time to really investigate the failures this unit is showing but I hope that what I have written will serve as some rudimentary guidance should you have to dig deeper into locating your problem.
?
Regards,
?
Greg
|
Re: Hewlett Packard 5335A Universal Frequency Counter Fail Massage 5.1
Hi Greg, I have tried everything following the service manual carefully all voltages appear to be in order as well as waveforms according to manual everything is working except for fail message 5.1 when first powered on, the start interpolator wave forms seem to be OK I just don't know what else I can do. Thank You so much for all the help. Sal C. Cornacchia
On Saturday, September 12, 2020, 02:41:19 p.m. EDT, Greg Muir via groups.io <big_sky_explorer@...> wrote:
Sal,
?
I have a 5335A that has been sitting on the shelf that has been awaiting attention for some time.? It was once fully functional but developed a couple of error messages unexpectedly.? And, as I indicated, I still have to open it up and look around to see what is happening.
?
When first powered up there is a fail message 4.6 (MRC COUNTING PROBLEM IN REG-E OR T).? If any button is pressed the fail messages changes to 5.1 (START INTERPOLATOR PROBLEM) and the display and other indicators begin to flash erratically.
?
Perusing the schematics I get the impression that there is possibly a clocking problem around the Multiple Register Counter (MRC) U6 that also fees the Interpolator counters via the start-stop control circuitry.? All of these items use the 10 MHz clocking.
?
If you have the manual (mine is P/N 05335-90021 3rd edition March 1983) I recommend starting at the troubleshooting flowchart on page 8-57.? It will lead you to the proper following pages describing the troubleshooting techniques plus voltages & waveforms.? A good overview of the whole unit is shown in the block diagrams on pages 8-97 (for options 010, 020 & 030) or page 8-99 (if your unit includes option 040).
The circuitry that I referenced earlier is located in the upper right corner of these block diagrams in the ¡°A4 MAIN LOGIC¡± block.
?
Sorry that I cannot assist any further since I have not had the time to really investigate the failures this unit is showing but I hope that what I have written will serve as some rudimentary guidance should you have to dig deeper into locating your problem.
?
Regards,
?
Greg
|
Re: Hewlett Packard 5335A Universal Frequency Counter Fail Massage 5.1
Sal,
?
I have a 5335A that has been sitting on the shelf that has been awaiting attention for some time.? It was once fully functional but developed a couple of error messages unexpectedly.? And, as I indicated, I still have to open it up and look around to see what is happening.
?
When first powered up there is a fail message 4.6 (MRC COUNTING PROBLEM IN REG-E OR T).? If any button is pressed the fail messages changes to 5.1 (START INTERPOLATOR PROBLEM) and the display and other indicators begin to flash erratically.
?
Perusing the schematics I get the impression that there is possibly a clocking problem around the Multiple Register Counter (MRC) U6 that also fees the Interpolator counters via the start-stop control circuitry.? All of these items use the 10 MHz clocking.
?
If you have the manual (mine is P/N 05335-90021 3rd edition March 1983) I recommend starting at the troubleshooting flowchart on page 8-57.? It will lead you to the proper following pages describing the troubleshooting techniques plus voltages & waveforms.? A good overview of the whole unit is shown in the block diagrams on pages 8-97 (for options 010, 020 & 030) or page 8-99 (if your unit includes option 040).
The circuitry that I referenced earlier is located in the upper right corner of these block diagrams in the ¡°A4 MAIN LOGIC¡± block.
?
Sorry that I cannot assist any further since I have not had the time to really investigate the failures this unit is showing but I hope that what I have written will serve as some rudimentary guidance should you have to dig deeper into locating your problem.
?
Regards,
?
Greg
|
Re: 8648C RF Output Question
Says
MAX REV PWR
50 W 25 VDC
Just above the output on mine.
|
On 9/11/20 7:06 PM, Morris Odell wrote: I have a 00105-6013 oscillator here that was removed from a junked 5061A. You're welcome to if for the cost of shipping
BUT - I'm in the most severely locked down state in Australia and can't get to a post office for at least another 3 weeks maybe. Even once I do, our postal service is absolutely terrible at the moment so shipping time could be weeks.
If you can tolerate the wait let me know and I'll pack it ready for when I can send it. Yes please, I'd like to take you up on that, whenever you're able. On the other issue, I don't think leaving the ion pump off for a few weeks will be a problem. My 5061A was in storage for a few years before I resurrected it and it works just fine. I just dread the occasion when the pump current doesn't fall as it should. These don't exactly grow on trees. :-/ -Dave -- Dave McGuire, AK4HZ New Kensington, PA
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Re: Hewlett Packard 5335A Universal Frequency Counter Fail Massage 5.1
Hello Orin, Thank You for the Blog I wil read it and Pay Attention what You have mentioned I appreciate for taking the time to help me out.?
On Friday, September 11, 2020, 06:14:09 p.m. EDT, Orin Eman <orin.eman@...> wrote:
Read this thread over on EEVblog start to finish:
Pay particular attention to comments about the power supplies and relay/relay socket.
Then check the power supplies.
5335As will act really goofy if the relay socket is about to fail so you have to make sure it's OK before you do any other troubleshooting.
Orin.
Hello Everyone I have a Hewlett Packard 5335A Universal Frequency Counter
With Fail Massage 5.1 when Powered on, according to the manual it is
Start Interpolator Problem, I have tried to trace the problem but no luck
I hope that some one has some experience with this counter and can
Point me in the right direction Thank You I am looking forward to hear
from a knowledgeable individual that is more knowledgeable I
Thank You
Sal C. Cornacchia
RF Microwave Engineer (Ret.)
|
File /8000 to 9999/8566 B,67 A,68 B Spectrum Analyzers. DLPs(Down Loadable Programs) and Tools/DLP_Windows_installation (2).zip uploaded
#file-notice
The following files have been uploaded to
the Files area of the [email protected] group.
By: brian.flynn
Description:
A set of Windows *.bat files to install the five DLPs given in set 1 above, in a 8566B/8568B. This set has the problem with the waterfall demo corrected.
|
Re: HP 8593e alimentation A8
Hi George,
?thanks for you so many and so detailed advice .?
?I use a 220V:220V isolation transformer to prevent? electric shock and will check more carefully.? safety first.
? ?
best 73
LANZHU
BG8AAK? ?
Chengdu , P.R.CHINA
|
Re: Hp8566B DLP installation from windows PC
Hi rmb_guru
Your were right about the problem being the loss of the first line of the code. I put in the "dummy" line you suggested an all now works. I presume it is some issue with the timing between the PC and the SA. I will upload an amended *.zip file. Many thanks for the helpfull suggestion.
Brian GM8BJF
|
Re: HP 8593e alimentation A8
Hi
I must start with a word of warning, the 08563-60064 board carries out two distinct functions. If you look at it with the transformer T301 uppermost and looking at the component side, to the right hand side of the transformer T301 is the low voltage regulator feedback side which is coupled back to the left hand switching controller side via the U308 optical coupler. All of the left hand side is at high voltage with lethal currents available DO NOT USE ANY GROUNDED TEST EQUIPMENT TO LOOK AT THE LEFT HAND SIDE when the PSU is connected to the mains supply as the PSU high voltage side is permanently energised, if you do so there are considerable health risks to you and you WILL destroy the power supply.
I would recommend that the 08563-60064 board is removed and independently powered by a 12 to 15VDC current limited power supply, set for a low current limit, to test and repair it. If you do it this way accidental probe slippages will not destroy the 08563-60064 board.
The main switch mode power supply is turned on/off by using the remote control pin 10 of the NE5560D switch mode controller U309. The front panel on/off switch does no more than shorting out a winding on T301, pins 1 and 4, via a 10R resistor, this provides an voltage isolation barrier for the power supply. T301 forms part of an oscillator using pins 5 through 8 and part of U303 and surrounding components which is prevented from oscillating by shorting out pins 1 and 4 of T301, with the 08563-60064 board externally powered you can just hear the oscillator running.
I have never drawn the schematic for the 08563-60064 board myself so you will have to trace the control signal from the T301 oscillator to the control pin 10 of U309 yourself. Pay particular attention to the diodes around U303, CR301, CR302 and CR306, sometimes these are the cause of the power supply not switching on by going leaky. In the past a number of individuals claim to have reverse engineered the 08563-60064 board, but as far as I know the resulting schematic¡¯s have never been made available.
There are a number of power supply protection circuits implemented using U302, U304, U306, U307 and possibly using U301 as a reference voltage for them, but these should not prevent at least an initial turn on of the supply. Bizarrely one of the protection circuits appears to turn the switching stage, and as a result the SA, on when the incoming mains voltage exceeds a set level, I presume this is done to protect the main bulk storage electrolytic capacitors from being subjected to over voltage by applying a load to them.
In the past I have made a number of notes regarding the 08563-60064 board, in time I may be able to help you further from them. This switch mode power supply will not operate without a minimum load on the +5VDC supply. I say again, this power supply is fully energised on the incoming AC/DC side whenever it is connected to the mains, be very careful.
Hope that this helps you.
73 George G6HIG Dover UK
On Saturday, 12 September 2020, 04:32:20 BST, lanzhu@... <lanzhu@...> wrote:
hi, George, I find this circuit diagram comes from 08563-60064. My HP8592L PSU £¨5062-8229£© was bad to. all the LED is off¡£?I doubt on swtiching board Q140 4N50E and SMD bord U302 LP339¡£ the Q140 4N50E? gate pin connect the SMD board LP339 pin2 (out)£¬ only 0.9V and also zenner nearby¡£? LP339 Vcc is 15V from zenner VR110 is ok. the? LP339 comparator connect some transistor(?)and no circuit ,so I cannot check more.? pls do you have any idea?? ? thx de BG8AAK China 
|
Re: 10811A schematic - was( Re: [HP-Agilent-Keysight-equipment] 5061A advice sought)
Hi Tam,
Yes it's available online. I don't know if Artek has better scans than what you find below. But I think these should be good enough.
Br, Askild
On Sat, Sep 12, 2020 at 10:03 AM Tam Hanna < tamhan@...> wrote: Hello,
now that my wife flies off to Germany for business, the good season
resumes at Tam H.Q.
My HP 53310A has the OXCO. Sadly, it blew up when I connected it to
230VAC for the first time, with the unit since always throwing a lesser
self test fail.
I bought the schematics from Artek, only to see that the OXCO unit is
not in there. Anyone have the schematics on hand, or know where to buy
them? I'll gladly pay Artek some extra cash - if only, because that
would confirm that he is still alive and should PLEASE PLEASE return my
Systron Donner manual
Tam
- - - - -
With best regards
Tam HANNA
Enjoy electronics? Join 13500 followers by visiting the Crazy Electronics Lab at
On 11.09.20 23:49, John Ackermann N8UR wrote:
> Is it the newer 10811A oscillator, or the older one (can't remember
> the number right now)?? They have different oven circuits.? But yes,
> it's been known to happen.? In particular, there's a thermal fuse that
> can give out.? Careful disassembly of the outer case will get you to it.
>
> John
> ----
>
> On 9/11/20 5:46 PM, Dave McGuire wrote:
>>
>> ?? Hmm, as in no longer heating?? That would make sense.? Is there a
>> common failure mode?
>>
>> ?? I'll de-rack it over the weekend.
>>
>> ??????????? -Dave
>>
>> On 9/11/20 5:44 PM, John Ackermann N8UR wrote:
>>> For that big an offset, I'd suspect the oven in the OCXO.
>>>
>>> John
>>> On Sep 11, 2020, at 5:41 PM, Dave McGuire <mcguire@...
>>> <mailto:mcguire@...>> wrote:
>>>
>>>
>>> ??????? I have a 5061A Cs-beam oscillator that was working great, in
>>> very
>>> ??? occasional use.? One day recently it refused to lock.
>>>
>>> ??????? A quick glance through the important stuff showed that the 5MHz
>>> ??? oscillator, with the loop open, in "Cs off" mode, was about
>>> 100Hz high.
>>> ??? I believe this is well outside the PLL capture range.
>>>
>>> ??????? Not stopping to think much, I cranked the coarse 5MHz
>>> oscillator
>>> ??? frequency adjustment down.? It hit the end of its travel with the
>>> ??? oscillator's output still being 40Hz high.
>>>
>>> ??????? Before I start digging in, can anyone offer any thoughts as
>>> to what
>>> ??? may have happened to the oscillator?? I had been performing
>>> flawlessly
>>> ??? until now, but I'd not checked its output in probably nine
>>> months, so I
>>> ??? don't know if the frequency drifted high, or if it "jumped".
>>>
>>> ??????? Any advice or thoughts on this would be greatly appreciated.
>>>
>>> ?????????????????? Thanks,
>>> ?????????????????? -Dave
>>>
>>>
>>
>>
>
>
>
|
Re: 8568B RF section manual wanted
Hi Alan,
You are most welcome. I have ordered a considerably number of manuals from Dave over the years and they all have been very high quality scans.
Although one can do a download I always buy the CD just to have it on file.
Take care and stay safe during these crazy times!
Ken
toggle quoted message
Show quoted text
On 12Sep, 2020, at 2:55 AM, Alan G3XAQ <alan@...> wrote:
Thanks, Ken. I've ordered a set of manuals from Artek.
Regards, Alan
On Sat, Sep 12, 2020 at 09:26 AM, ken chalfant wrote:
Greetings,
Check with Dave at Artek Manuals. I think he shows it listed.
;data=02%7C01%7C%7Ca2f0b7ceee364902b1bb08d856f98c46%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637354977092301092&sdata=uJow5ZKMKZzfQK7cp6d8pE0azxtwsEy14ejWghHctp8%3D&reserved=0 <;data=02%7C01%7C%7Ca2f0b7ceee364902b1bb08d856f98c46%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637354977092301092&sdata=uJow5ZKMKZzfQK7cp6d8pE0azxtwsEy14ejWghHctp8%3D&reserved=0>
Wishing you success.
Regards,
Ken
On 12Sep, 2020, at 2:03 AM, Alan G3XAQ <alan@...> wrote:
Does anyone know an online source for the manual specific to the 8568B RF section please? Everything I have found is for the 8566. My SA has a 20MHz CAL
output around -45dBm instead of the required -10dBm and I need to look at (I
think) the A16 schematic.
Thanks, Alan
|
Re: 8568B RF section manual wanted
Thanks, Ken. I've ordered a set of manuals from Artek.
Regards, Alan
toggle quoted message
Show quoted text
On Sat, Sep 12, 2020 at 09:26 AM, ken chalfant wrote:
Greetings,
Check with Dave at Artek Manuals. I think he shows it listed.
www.artekmanuals.com <>
Wishing you success.
Regards,
Ken
On 12Sep, 2020, at 2:03 AM, Alan G3XAQ <alan@...> wrote:
Does anyone know an online source for the manual specific to the 8568B RF section please? Everything I have found is for the 8566. My SA has a 20MHz CAL
output around -45dBm instead of the required -10dBm and I need to look at (I
think) the A16 schematic.
Thanks, Alan
|
Re: 8568B RF section manual wanted
Greetings,
Check with Dave at Artek Manuals. ?I think he shows it listed.
Wishing you success.
Regards,
Ken
toggle quoted message
Show quoted text
On 12Sep, 2020, at 2:03 AM, Alan G3XAQ < alan@...> wrote:
Does anyone know an online source for the manual specific to the 8568B RF section please? Everything I have found is for the 8566. My SA has a 20MHz CAL output around -45dBm instead of the required -10dBm and I need to look at (I think) the A16 schematic.
Thanks, Alan
|
Oven for 5MHz OCXO not running
David
toggle quoted message
Show quoted text
-----Original Message----- From: [email protected] [mailto: [email protected]] On Behalf Of Dave McGuire Sent: 11 September 2020 22:42 To: [email protected]Subject: [HP-Agilent-Keysight-equipment] 5061A advice sought I have a 5061A Cs-beam oscillator that was working great, in very occasional use. One day recently it refused to lock. A quick glance through the important stuff showed that the 5MHz oscillator, with the loop open, in "Cs off" mode, was about 100Hz high. I believe this is well outside the PLL capture range.
|
10811A schematic - was( Re: [HP-Agilent-Keysight-equipment] 5061A advice sought)
Hello,
now that my wife flies off to Germany for business, the good season resumes at Tam H.Q.
My HP 53310A has the OXCO. Sadly, it blew up when I connected it to 230VAC for the first time, with the unit since always throwing a lesser self test fail.
I bought the schematics from Artek, only to see that the OXCO unit is not in there. Anyone have the schematics on hand, or know where to buy them? I'll gladly pay Artek some extra cash - if only, because that would confirm that he is still alive and should PLEASE PLEASE return my Systron Donner manual
Tam
- - - - -
With best regards
Tam HANNA
Enjoy electronics? Join 13500 followers by visiting the Crazy Electronics Lab at
toggle quoted message
Show quoted text
On 11.09.20 23:49, John Ackermann N8UR wrote: Is it the newer 10811A oscillator, or the older one (can't remember the number right now)?? They have different oven circuits.? But yes, it's been known to happen.? In particular, there's a thermal fuse that can give out.? Careful disassembly of the outer case will get you to it.
John
----
On 9/11/20 5:46 PM, Dave McGuire wrote:
?? Hmm, as in no longer heating?? That would make sense.? Is there a common failure mode?
?? I'll de-rack it over the weekend.
??????????? -Dave
On 9/11/20 5:44 PM, John Ackermann N8UR wrote:
For that big an offset, I'd suspect the oven in the OCXO.
John
On Sep 11, 2020, at 5:41 PM, Dave McGuire <mcguire@... <mailto:mcguire@...>> wrote:
??????? I have a 5061A Cs-beam oscillator that was working great, in very
??? occasional use.? One day recently it refused to lock.
??????? A quick glance through the important stuff showed that the 5MHz
??? oscillator, with the loop open, in "Cs off" mode, was about 100Hz high.
??? I believe this is well outside the PLL capture range.
??????? Not stopping to think much, I cranked the coarse 5MHz oscillator
??? frequency adjustment down.? It hit the end of its travel with the
??? oscillator's output still being 40Hz high.
??????? Before I start digging in, can anyone offer any thoughts as to what
??? may have happened to the oscillator?? I had been performing flawlessly
??? until now, but I'd not checked its output in probably nine months, so I
??? don't know if the frequency drifted high, or if it "jumped".
??????? Any advice or thoughts on this would be greatly appreciated.
?????????????????? Thanks,
?????????????????? -Dave
|
8568B RF section manual wanted
Does anyone know an online source for the manual specific to the 8568B RF section please? Everything I have found is for the 8566. My SA has a 20MHz CAL output around -45dBm instead of the required -10dBm and I need to look at (I think) the A16 schematic.
Thanks, Alan
|
Dave McGuire
David C. Partridge