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Date
Re: PNA (E835XA) Hard drive issue

 

So why not download the image and store it somewhere else for list members ???
Quoting Caesar Valenti <caesarv@...>:

I have a new HDD for the 500MHz CPU, but you can also download the
image from Keysight.
For assorted reasons, I don't want to post the link, but if you send
me an email, I can give it to you.

It is a 4GB file and if too many people access it, it may overload
the server and exceed bandwidth limits.? In that case they might
remove it.? As old timers like me leave, Keysight shows little
interest in helping hobbyists.? My guess is that they don't even
know the HDD image is available on their server, and I do not want
to draw attention to that fact.
Re: PNA (E835XA) Hard drive issue

 

@Pete I live in Montreal, Canada
@Caesar I sent you a PM.

Thank you very much, I wasn't expecting answers that fast!!!
lab view driver for HP 8662/63

 

Does any one have a LabView driver for the 8662/63?? i have seen a reference to one on the NI website but can't get to where it claims to be stored.

Thank you

Stephen Hanselman
Datagate Systems
Re: HP 3456A - Missing Diodes on A3 Board

 

Hi Robert,

I now see that "delta" 10 inside that bridge rectifier is a reference to change #10 which is described beginning on page 7-7. Page 7-8 shows the diodes on the A3 board instead of the external bridge.

Thanks! That was really confusing to me and I suppose I need to read the manual more closely!

Barry - N4BUQ

----- Original Message -----
From: "Robert G8RPI via Groups.Io" <robert8rpi@...>
To: [email protected]
Sent: Tuesday, March 10, 2020 4:13:48 PM
Subject: Re: [HP-Agilent-Keysight-equipment] HP 3456A - Missing Diodes on A3 Board

DOH!
You are correct. The circuit is not great though showing parts of A3 and A10
on the same sheet. This sheet does give the answer though. The diodes on the
PCB layout appear to be medum sized power devices, 3-4A. They appear to be a
bridge feeding C6. The schematic on PDF page No 297 of this manual

shows a off-PCB bridge CR%.

As the unregulated voltage was brought off the PCB they did not have to short
out the diode locations.
I assume the individual diodes over heated so were replaced with a bridge.
Not great design to have a big loop and connectors between the bridge and
filter capacitor and the high ripple currents.

Robert G8RPI.
Re: HP 3456A - Missing Diodes on A3 Board

 

DOH!
You are correct. The circuit is not great though showing parts of A3 and A10 on the same sheet. This sheet does give the answer though. The diodes on the PCB layout appear to be medum sized power devices, 3-4A. They appear to be a bridge feeding C6. The schematic on PDF page No 297 of this manual
shows a off-PCB bridge CR%.


As the unregulated voltage was brought off the PCB they did not have to short out the diode locations.
I assume the individual diodes over heated so were replaced with a bridge. Not great design to have a big loop and connectors between the bridge and filter capacitor and the high ripple currents.

Robert G8RPI.
Re: HP 3456A - Missing Diodes on A3 Board

 

Hi Robert,

There are two sets of CR5 through CR8. One set is on the A10 board and I think those may be the ones to which you're referring. Those are a mix of two zeners and two non-zeners.

The other set of CR5 through CR8 are on the A3 board and, I believe, all four are non-zeners. They're not listed in the table of replaceable parts (there's a noticeable gap in the list of parts there as if they've been redacted) but the symbols in the board shows an ordinary diode symbol. It almost appears those may have been a rectifier bridge of sorts but I haven't traced the boards to confirm how they're connected.

Somewhere (I believe it was on an eBay offering), there was a picture of an A3 board with those diodes and they were a rather hefty devices and it seems odd they'd be needed in this meter.

Thanks,
Barry - N4BUQ

----- Original Message -----
From: "Robert G8RPI via Groups.Io" <robert8rpi@...>
To: [email protected]
Sent: Tuesday, March 10, 2020 3:02:17 PM
Subject: Re: [HP-Agilent-Keysight-equipment] HP 3456A - Missing Diodes on A3 Board

The diodes CR5 and CR7 are over-voltage zeners. These could easily be left
off with no effect as could seeral others. CR6 & CR8 appear to be part of a
low current? 40V unregulate supply so not so clear how they could be left
off. Are you sure of the numbers?

Robert G8RPI.
Re: HP 3456A - Missing Diodes on A3 Board

 

The diodes CR5 and CR7 are over-voltage zeners. These could easily be left off with no effect as could seeral others. CR6 & CR8 appear to be part of a low current? 40V unregulate supply so not so clear how they could be left off. Are you sure of the numbers?

Robert G8RPI.
Re: Free (for shipping cost) -- Several HP paper manuals

 

Sigh... nor was that one. Not doing a good job of address proofreading
this afternoon.

On 3/10/20 3:43 PM, John Ackermann N8UR via Groups.Io wrote:
Hi Harold --

The 8640 book is spoken for, but the 8901B book is yours if you want it.
It's about 9 pounds and media shipping to 35601 appears to be around
$7.00. You can PayPal to jra@....

John
----

On 3/3/20 3:21 PM, Harold Foster wrote:
If still available, I would like the ones for the 8901B and the 8640B.?
Please let me know if they are available and how much to send to Zip 35601.

Thank you,

Harold Foster
Re: Free (for shipping cost) -- Several HP paper manuals

 

Hi Harold --

The 8640 book is spoken for, but the 8901B book is yours if you want it.
It's about 9 pounds and media shipping to 35601 appears to be around
$7.00. You can PayPal to jra@....

John
----

On 3/3/20 3:21 PM, Harold Foster wrote:
If still available, I would like the ones for the 8901B and the 8640B.?
Please let me know if they are available and how much to send to Zip 35601.

Thank you,

Harold Foster
Re: Free (for shipping cost) -- Several HP paper manuals

 

Sorry... that wasn't meant for the list.

On 3/10/20 3:27 PM, John Ackermann N8UR via Groups.Io wrote:
Hi Tam --

As best I can tell, sending USPS Priority International would be about
$85, maybe a tiny bit less. The book weighs about 6 pounds.

Let me know if you'd like it despite that cost.

Thanks!

John
----

On 3/3/20 2:56 PM, Tam Hanna wrote:
Hello,

how much would this:

5.? 8753C User's Guide and Quick Reference

be to Hungary?

Tam

With best regards
Tam HANNA

Enjoy electronics? Join 15k7 other followers by visiting the Crazy
Electronics Lab at

On 2020. 03. 03. 20:55, John Ackermann N8UR wrote:
I have the following manuals available for the cost of shipping from
45409.? Most are originals though a couple are good quality copies, and
most are in HP binders.

1.? 3585B Operating, Service Vol. 1, and Service Vol. 2 (3 binders)

2.? 8712ET/ES and 8714ET/ES Service Guide

3.? 8920A, 8920B User's Guide Rev. B and
???? HP8920B HPIB Programmer's Guide with IBASIC (2 binders)

4.? 8901B Modulation Analyzer Operation and Service

5.? 8753C User's Guide and Quick Reference

6.? 3561A Dynamic Signal Analyzer Operating Manual (probably a copy)

7.? 8640B Signal Generator User and Service (original bound version)

8.? 8902A Service Manual volumes 2, 3, and 4 (3 binders)

Thanks,
John
Re: Free (for shipping cost) -- Several HP paper manuals

 

Hi Tam --

As best I can tell, sending USPS Priority International would be about
$85, maybe a tiny bit less. The book weighs about 6 pounds.

Let me know if you'd like it despite that cost.

Thanks!

John
----

On 3/3/20 2:56 PM, Tam Hanna wrote:
Hello,

how much would this:

5.? 8753C User's Guide and Quick Reference

be to Hungary?

Tam

With best regards
Tam HANNA

Enjoy electronics? Join 15k7 other followers by visiting the Crazy
Electronics Lab at

On 2020. 03. 03. 20:55, John Ackermann N8UR wrote:
I have the following manuals available for the cost of shipping from
45409.? Most are originals though a couple are good quality copies, and
most are in HP binders.

1.? 3585B Operating, Service Vol. 1, and Service Vol. 2 (3 binders)

2.? 8712ET/ES and 8714ET/ES Service Guide

3.? 8920A, 8920B User's Guide Rev. B and
???? HP8920B HPIB Programmer's Guide with IBASIC (2 binders)

4.? 8901B Modulation Analyzer Operation and Service

5.? 8753C User's Guide and Quick Reference

6.? 3561A Dynamic Signal Analyzer Operating Manual (probably a copy)

7.? 8640B Signal Generator User and Service (original bound version)

8.? 8902A Service Manual volumes 2, 3, and 4 (3 binders)

Thanks,
John
Re: PNA (E835XA) Hard drive issue

 

On Tue, Mar 10, 2020 at 2:03 PM Caesar Valenti <caesarv@...> wrote:

I wish this forum would allow the editing of existing posts...it would make things much easier.
_._,_._,_
_______________
Well, this isn't a forum. It's an email reflector/mailing list with a
web interface.

Mark
Re: PNA (E835XA) Hard drive issue

 

I wish this forum would allow the editing of existing posts...it would make things much easier.
Re: PNA (E835XA) Hard drive issue

Pete Manfre
 

¡­ who can't? find¡­.?

P

On Tue, Mar 10, 2020, 1:00 PM Pete Manfre via Groups.Io <pmanfre=[email protected]> wrote:
Yes I know that.? ?I still have the 266 cpu and hd from the upgrade.? ?I will pass it on to someone who can find a 500 and needs it.? ?Paying it forward¡­ ?

Pete

On Tue, Mar 10, 2020, 12:51 PM Caesar Valenti <caesarv@...> wrote:
Pete, that is good to know.? The 266 was dog slow...and especially so when it only had 64mb of ram.? The max it could hold was 128mb.? The 500MHz cpu is capable of 512mb of ram.?
The support team at Keysight would not deal with any 266MHz cpu and would just give away a 500MHz CPU rather than trying to support that old thing.?

Re: PNA (E835XA) Hard drive issue

Pete Manfre
 

Yes I know that.? ?I still have the 266 cpu and hd from the upgrade.? ?I will pass it on to someone who can find a 500 and needs it.? ?Paying it forward¡­ ?

Pete

On Tue, Mar 10, 2020, 12:51 PM Caesar Valenti <caesarv@...> wrote:
Pete, that is good to know.? The 266 was dog slow...and especially so when it only had 64mb of ram.? The max it could hold was 128mb.? The 500MHz cpu is capable of 512mb of ram.?
The support team at Keysight would not deal with any 266MHz cpu and would just give away a 500MHz CPU rather than trying to support that old thing.?

Re: PNA (E835XA) Hard drive issue

 

Pete, that is good to know.? The 266 was dog slow...and especially so when it only had 64mb of ram.? The max it could hold was 128mb.? The 500MHz cpu is capable of 512mb of ram.?
The support team at Keysight would not deal with any 266MHz cpu and would just give away a 500MHz CPU rather than trying to support that old thing.?
Re: PNA (E835XA) Hard drive issue

Pete Manfre
 

I have an image of the 266 Mhz cpu should someone need one.?

Pete wa2odo?


On Tue, Mar 10, 2020, 12:39 PM Caesar Valenti <caesarv@...> wrote:
I should have added that, yes, the 266MHz cpu is useless and is not supportable.? There is no HDD image for that.? Never buy a PNA with that cpu unless you have access to a 500MHz cpu.

Re: PNA (E835XA) Hard drive issue

 

I should have added that, yes, the 266MHz cpu is useless and is not supportable.? There is no HDD image for that.? Never buy a PNA with that cpu unless you have access to a 500MHz cpu.
Re: PNA (E835XA) Hard drive issue

 

I have a new HDD for the 500MHz CPU, but you can also download the image from Keysight.
For assorted reasons, I don't want to post the link, but if you send me an email, I can give it to you.

It is a 4GB file and if too many people access it, it may overload the server and exceed bandwidth limits.? In that case they might remove it.? As old timers like me leave, Keysight shows little interest in helping hobbyists.? My guess is that they don't even know the HDD image is available on their server, and I do not want to draw attention to that fact.
8510C / 85101 Trace Glitches

 

Hi everyone!

I've got an 8510C display section (aka 85101) with a distinctive and worsening issue that I'm going to have to sort out soon: occasionally, single points in the active trace will glitch. They jump by 20 or 30dB downwards and then they stick in place. The trace continues to update around them, but the glitches themselves do not clear on subsequent sweeps. Switching parameters (s21/s11/s12/s22) clears away all of the glitches. I haven't noticed any other strange behavior and the main RAM / display RAM tests haven't failed, even after looping for hours.

My guess is that there's some kind of separte math RAM that's deteriorating or it's the first victim of a deteriorating power supply.

Has anyone run into this issue before?

Thanks,
John deWerd
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