Re: 5335A keyboard LED interesting thing
Hi,
No it stays lit. But need to experiment if it makes sense of when it is on. Maybe they found that it does not add additional info of is confusing, so decided to cover it.? But, at least there are a couple of leds for spares under these keys.
Szabolcs Jared Cabot via <jaredcabot= [email protected]> ezt ¨ªrta (id?pont: 2020. ¨¢pr. 15., Sze 2:20):
But if it only lights up when you press the button, won't your finger be covering it whenever the LED illuminates anyway? :)
|
Re: HP8562A Errors 304,335,317,333
I would start by checking for 10 MHz reference output at the rear panel, also try input an external 10 MHz signal. There is a 100 MHz oscillator that drives the circuits creating the errors. The 300 MHz output is this signal x3. Another quick check is lookin for the led¡¯s on the main brd, cover off, unit on its right side (all brd hinges are on this side, so the brds can be unfastened and flopped down. The led¡¯s are on the upper edge of the rightmost brd - the A16 brd. ?? This will tell you the status of all of the power supplies, and whether the instrument processor is working. Having the manual is necessary for fixing the 8562A. The 85629A TAM might also be required for diagnosis and alignment.
Don Bitters
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Re: HP 208A Test Oscillator Op/Svc Manual
Puts me in mind of the 236A Telephone Test Oscillator- suspect very similar inside but different packaging etc. DaveB, NZ ? ?
toggle quoted message
Show quoted text
From: [email protected] [mailto:[email protected]] On Behalf Of Patrick Manning
Sent: Wednesday, April 15, 2020 16:03
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP 208A Test Oscillator Op/Svc Manual? NO, it's a bit bigger than the 209.? It has batteries, but appears to be capable of running off either the batteries or the mains, but I'm not certain of this.? It's a 1/3 width rack cabinet. -Pat ? On April 14, 2020 at 8:19 PM "Don Bitters via groups.io" <donbitters@...> wrote:
Hmmm! I have never heard of an HP208C, but it could have been a very low rate production. Does it look like the attached:
or if the pic did not go through;
Also visible at kenrockwell.com/audio/hp/209A
If it matches this pic then it could be an HP 209A/C audio oscillator.
Don Bitters
|
Re: HP 208A Test Oscillator Op/Svc Manual
And I didn't mean to shout that 'no' - apparently didn't get my finger off the shift key fast enough.? I need to proofread better!
On April 15, 2020 at 12:02 AM Patrick Manning <pbmanning@...> wrote:
NO, it's a bit bigger than the 209.? It has batteries, but appears to be capable of running off either the batteries or the mains, but I'm not certain of this.? It's a 1/3 width rack cabinet. -Pat 
On April 14, 2020 at 8:19 PM "Don Bitters via groups.io" < donbitters@...> wrote:
Hmmm! I have never heard of an HP208C, but it could have been a very low rate production. Does it look like the attached:
or if the pic did not go through;
Also visible at kenrockwell.com/audio/hp/209A
If it matches this pic then it could be an HP 209A/C audio oscillator.
Don Bitters
?
?
|
Re: HP 208A Test Oscillator Op/Svc Manual
Thanks for the tip, Bob - I have a 204B in my pile-o-stuff-to-be-fixed, and at a glance the main board looks very similar.? I think that will help.? It obviously doesn't have the meter circuitry, and the power supply is different, but this at least gives a hint. -Pat
On April 14, 2020 at 8:22 PM "Bob Albert via groups.io" <bob91343@...> wrote:
?
I read that it's the same as the 204B but adds the level meter.
Bob
On Tuesday, April 14, 2020, 04:04:00 PM PDT, Patrick Manning <pbmanning@...> wrote:
Hi All -? I have an HP 208A Test Oscillator sitting on the bench, and have been trying to find an operation/service manual for it with no success thus far.? I've tried all of the usual suspects that I can think of - Keysight, KO4BB, BAMA, Artek, Electrotanya, radiomuseum.org, the Bay of Evil, hparchive - all to no avail. It made its first appearance in the 1963/64 short form catalog, and last showed up in the catalog for 1973, so I figure that they must have sold at least a few of them.? Does anyone know of a source I might have missed, have a scan, or even a hard copy they'd be willing to part with?? Any insight would be welcome. Thanks! Best -Pat ?
?
?
|
Re: HP 208A Test Oscillator Op/Svc Manual
NO, it's a bit bigger than the 209.? It has batteries, but appears to be capable of running off either the batteries or the mains, but I'm not certain of this.? It's a 1/3 width rack cabinet. -Pat 
On April 14, 2020 at 8:19 PM "Don Bitters via groups.io" <donbitters@...> wrote:
Hmmm! I have never heard of an HP208C, but it could have been a very low rate production. Does it look like the attached:
or if the pic did not go through;
Also visible at kenrockwell.com/audio/hp/209A
If it matches this pic then it could be an HP 209A/C audio oscillator.
Don Bitters
|
Manual wanted: HP 1208A XY display
Hi,
Information about this is pretty scarce online. If anyone has a manual
to sell for HP 1208A XY display, pref including schematics, please
contact me!
Thanks
--Toby
|
Re: Bill West keytop puller
To get the inside scoop on corrosion inhibitors:
The guy (Ben Krasnow aka Applied Science) goes over synthesis of the likely active ingredient in Deoxit. That video is the real deal.
Cheers, Kuba Ober
toggle quoted message
Show quoted text
13 apr. 2020 kl. 11:43 fm skrev Chuck Harris <cfharris@...>:
? On this, I have to completely agree: ?There is no cause to
remove the key caps from these keyboards to clean any part.
The keycaps become essentially welded on after a quarter
century. ?Where they may have pulled off easily when they
were new (if you used the manufacturer sanctioned puller),
now, things break.
The best way I have found to service these keyboards is to
wash them liberally with IPA. ?Liberally, meaning soaking,
dripping wet over a pan.
I use a pump sprayer filled with IPA over a pan to collect
the wash. ?I soak every part of the key mechanism, while
pressing the key multiple times to help wash the grease that
HP so foolishly used, out from under the springs.
After a thorough wash, I shake, and then blow off the remaining
IPA.
No lubrication is necessary, or even desirable. ?None. ?Don't
do it.
If a spring has taken a set, just bend it back to straight, and
put it back.
As to deoxit being bunkum: I disagree. ?It improves the contact,
and does so for a long, long time. ?I am not saying that something
else wouldn't work... show me something better.
The makers do get needlessly huckstery about their product.
Fader lube is wonderful for resurrecting pots of all kinds.
-Chuck Harris
Roy Thistle wrote:
On Sun, Apr 12, 2020 at 02:05 PM, Maurice Smulders wrote:
What is the safest way to pull the keytops of a Bill West keyboard? I have
a 3325A and 8131A with sticky keys I want to fix...
AT https://www.youtube.com/watch?v=kYV7oWQTfVI
From 3:10 to 5:08... Curious Mark pulls the caps off a 3325A Bill West keyboard... and shows cleaning and lubing (with DeoxiT... which I think, DeoxiT is mostly bunkum). There is a shot of the tool he is using (looks like a small
nail puller) at exactly 4.03/15:18.
Seems a bit brutal... He tore the plunger out of the 7 key's frame! (...you can see that if you watch closely.)
If you look in the comments you'll see? Raymond Domp Frank's? recommendations (...same as he has posted in this thread.)
Best regards and wishes.
Roy
|
Re: hp8350b/hp83595a front panel mod
Hello,
beware of these, though, as the thickness of the shaft can cause
problems when accessing tight spaces.
My wife recently damaged a Salters Orb by mistake, and I had to
tear it apart. Power screwdriver could not get into the creak for
the screw, so I had to do it by hand.
Tam
With best regards
Tam HANNA
Enjoy electronics? Join 15k7 other followers by visiting the Crazy Electronics Lab at
On 2020. 04. 15. 0:04, J Mcvein via
groups.io wrote:
toggle quoted message
Show quoted text
In the EU-UK area, probably
WIHA brand is best.? They make
a set with interchangeable
tips that is nice.
-J-
On Tuesday, April 14, 2020, 12:21:24 PM PDT, Paul
Bicknell <paul@...> wrote:
Hi
George
?
Regarding
the Japanese? cross head?? yes I
think they are called ??JEG
?
I have mean
meaning to get a good quality
set
?
Could any
one recommend a good supplier???
Must Be good Quality
?
Paul
?
Hi Paul
The Japanese use their own version with
different tip angles of a Philips head.
George
On
Tuesday, 14
April 2020, 20:09:36 BST, Paul Bicknell
<paul@...> wrote:
Regarding
cross head screws although I have a
complete sets of Philips and PoziDriv
I still com across rouge cross head
screws
I have a no 1 phillips with its tip
ground down by about 2 mm so the tip
dues not bottom on the screw head this
gives moor contact to the screw head
and dues not mess it up
Paul
-----Original Message-----
From: [email protected]
[mailto:[email protected]]
On Behalf Of Stephen
Hanselman
Sent: 14 April 2020 19:00
To: [email protected]
Subject: Re:
[HP-Agilent-Keysight-equipment]
hp8350b/hp83595a front panel
mod
HP's provided tool kits to us (field
engineering) also just had phillips.
We learned if it's not torqued to tight
a #2 phillips did OK on a #1 pozi.
But the best answer is to buy the right
ones even though they cost real
money
Steve
-----Original Message-----
From: [email protected]
<[email protected]>
On Behalf Of Larry McDavid
Sent: Tuesday, April 14, 2020 10:17 AM
To: [email protected]
Subject: Re:
[HP-Agilent-Keysight-equipment]
hp8350b/hp83595a front panel
mod
Notice those are PoziDriv head screws,
not Phillips. It is easy to damage
the screw head and possibly the driver
by using the incorrect driver. We all
should have 0, 1 and 2 PoziDriv
screwdrivers!
Larry
On 4/14/2020 6:18 AM, Steve - Home
wrote:
> Hi Jan,
>
> The semi-rigid is standard .141
with precision stainless steel SMA
> connectors. It is L-shaped with a
bit of an offset in the leg that
> goes to the front panel
connector:...
--
Best wishes,
Larry McDavid W6FUB
Anaheim , California ?
(SE of Los Angeles, near Disneyland )
-----
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Checked by AVG -
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No virus found in this
message.
Checked by AVG -
Version: 2016.0.8048 / Virus Database:
4793/15886 - Release Date: 08/14/18
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|
Re: 5335A keyboard LED interesting thing
On a side note, if anyone finds a bad LED and needs a replacement, here is a link to suitable parts.
From memory, I think around 10-ish mcd is roughly correct for brightness. (Part number HLMP-6300 is ringing a bell).
https://www.digikey.com/products/en/optoelectronics/led-indication-discrete/105?k=hlmp&pv16=317230
|
Re: 5335A keyboard LED interesting thing
On Wed, Apr 15, 2020 at 02:20 AM, Jared Cabot wrote:
But if it only lights up when you press the button, won't your finger be covering it whenever the LED illuminates anyway? :)
Oops! :) Raymond
|
Re: HP 208A Test Oscillator Op/Svc Manual
I read that it's the same as the 204B but adds the level meter.
Bob
On Tuesday, April 14, 2020, 04:04:00 PM PDT, Patrick Manning <pbmanning@...> wrote:
Hi All -? I have an HP 208A Test Oscillator sitting on the bench, and have been trying to find an operation/service manual for it with no success thus far.? I've tried all of the usual suspects that I can think of - Keysight, KO4BB, BAMA, Artek, Electrotanya, radiomuseum.org, the Bay of Evil, hparchive - all to no avail. It made its first appearance in the 1963/64 short form catalog, and last showed up in the catalog for 1973, so I figure that they must have sold at least a few of them.? Does anyone know of a source I might have missed, have a scan, or even a hard copy they'd be willing to part with?? Any insight would be welcome. Thanks! Best -Pat
|
Re: 5335A keyboard LED interesting thing
But if it only lights up when you press the button, won't your finger be covering it whenever the LED illuminates anyway? :)
|
Re: HP 208A Test Oscillator Op/Svc Manual
Hmmm! I have never heard of an HP208C, but it could have been a very low rate production. Does it look like the attached:
or if the pic did not go through;
Also visible at kenrockwell.com/audio/hp/209A
If it matches this pic then it could be an HP 209A/C audio oscillator.
Don Bitters
|
Re: Service Support Software
Guess I should have read more, thanks for the info.
73, Dick, W1KSZ
toggle quoted message
Show quoted text
On Tue, Apr 14, 2020 at 10:25 AM Dick < w1ksz@...> wrote:
>
> I downloaded the Service Support Software package so I may
> try my hand at checking out my somewhat new 8648C Sig Gen.
>
> Upon opening the SW package up pops a window asking for a
> name and password. No matter what I enter it says NG ??
The username and password are right there on the Keysight download page:
- Administration Configuration
User: Admin (case sensitive)
Password: Falcon (case sensitive) - Running Service Support Software
User: User (case sensitive)
Password: User (case sensitive) - Motherboard Utility
Password: 8648 (case sensitive)
|
Re: GPSDO connected to external ref inputs
Thanks for the warning, Dave.
I don't really need one yet (not that that has stopped me from buying something before, mind you!) cause I have the Chinese distribution amp (nice that it's small, not much bigger than 9 BNC jacks. May just get to that point someday, perhaps in retirement. I'm 55 now, so retirement isn't particularly right around the corner.
Jim
toggle quoted message
Show quoted text
------ Original Message ------ From: "ArtekManuals" <manuals@...> To: [email protected]Sent: 4/14/2020 9:34:08 AM Subject: Re: [HP-Agilent-Keysight-equipment] GPSDO connected to external ref inputs Jim ( et all)
There are 5087A's and there are 5087A's . Be careful and do your homework when shopping for one . They come with a plethora of optional Input and output amps. Some will do what you want some will be completely useless, some will have been scavenged and are bare bones without any input or output modules ....8^(. Get the seller to tell you by board part number what is in a unit. You can't trust what the options tags on the outside of the unit say ...been there done that got the scars to prove it.
Dave
manuals@...
On 4/13/2020 4:51 PM, Jim Ford wrote:
Thanks, Greg.
I will put the 5087A on my wishlist! Nice that it allows individual output amplitudes to be set (how, though?) and that it has a large number of outputs. Although I couldn't find a picture of the rear panel on ebay; I expect a forest of BNC jacks.
Downside is the size; I have my BG7TBL distribution amp suspended from the bottom of my equipment shelf over my bench, so it takes up zero bench or shelf space. Right next to it is the GPSDO, also tucked under.
Mini-Circuits I'm quite familiar with, as the guy running the show there, Ted Heil, and the local rep at Coastal RF Systems, Frank Edwards, and I all worked together at Powerwave Technologies back in the late 1990's to early 2000's. Yeah, I've been amazed for 30 or so years at how their prices are so much more reasonable than anybody else's.
Nice collection you have! Although I hate to use the term collection, as it violates the "Love people and use things, not the other way around" principle. Collecting implies not using because it devalues the items, and I've never understood why people would have say, HotWheels cars they couldn't play with, or guitars nobody could play ("Don' even look a' it!" to quote Nigel Tufnel in This Is Spinal Tap!). OK, I'll get off the soapbox now!
Jim
------ Original Message ------
From: "Greg Muir via groups.io" <big_sky_explorer@... <mailto:big_sky_explorer@...>>
To: [email protected] <mailto:[email protected]>
Sent: 4/13/2020 10:47:35 AM
Subject: Re: [HP-Agilent-Keysight-equipment] GPSDO connected to external ref inputs
Jim,
I have a HP 5087A distribution amp feeding output from an older HP Z3816 GPSDO to several pieces of equipment.These include:
Agilent E4425B signal generator
Agilent 8714ET network analyzer
EIP 548A microwave frequency counter
HP 3575A gain/phase meter
HP 5335A counter
HP 8920A RF communication test set
HP 53310A modulation domain analyzer
HP K34-9991A phase comparator
PTS 250 frequency synthesizer
Tracor 527E frequency difference meter
Tracor 895A linear phase/time comparator
Wayne Kerr PSG2400L signal generator
Except for the Z3816/5087 units most of the driven equipment is in a power-down state unless needed.The port on the 527E is switchable to an external connector on the bench for other test applications.In all, I feed one volt p-p or less to all of the equipment and it stays happy.The advantage with the 5087A is that each output is individually adjustable to suit the needs of the attached hardware.
If any of your units cannot tolerate a 4V amplitude I suggest that you pick up an in-line 50 ohm attenuator either from your favorite auction site or from Mini-Circuits (no affiliation however I rely on them for their low-cost high-quality products).4 volts does seem a little excessive for most external reference inputs since I am assuming you are referring to RMS amplitude and not peak-to-peak value
Greg
-- Dave
Manuals@...
www.ArtekManuals.com
-- This email has been checked for viruses by Avast antivirus software.
|
Re: HP 3325A/B Option 002 HV output kit - who wants one?
Hi,
?
It's all still happening and I have both Bruce and George on the list. :)
As mentioned before, Japan Post has suspended international postage to many countries at this time due to the pandemic, so I am unable to move forward until this suspension of services is lifted (all these kits are being shipped from Japan).
As for payment, I won't take any money until I can actually get things sent out, so sit tight and we'll get it all sorted eventually. :)
Jared.
|
HP 208A Test Oscillator Op/Svc Manual
Hi All -? I have an HP 208A Test Oscillator sitting on the bench, and have been trying to find an operation/service manual for it with no success thus far.? I've tried all of the usual suspects that I can think of - Keysight, KO4BB, BAMA, Artek, Electrotanya, radiomuseum.org, the Bay of Evil, hparchive - all to no avail. It made its first appearance in the 1963/64 short form catalog, and last showed up in the catalog for 1973, so I figure that they must have sold at least a few of them.? Does anyone know of a source I might have missed, have a scan, or even a hard copy they'd be willing to part with?? Any insight would be welcome. Thanks! Best -Pat
|
Re: hp8350b/hp83595a front panel mod
That¡¯s it exactly, Jim. My bad regarding the N-m unit designation. And I should have mentioned the connector gauges. Expensive, but they¡¯ve saved me more than their cost in avoiding damaged connectors. Damage a 3.5mm air line and explain to the boss? No thanks ??
toggle quoted message
Show quoted text
On Apr 14, 2020, at 5:29 PM, Jim Ford <james.ford@...> wrote:
?
Good thing you put in the lower torque spec for 3.5 mm to SMA connection, Steve.? I was about to recommend that the stainless steel SMA connectors be torqued to 8 in-lbs or 0.9 N-m (not N/m).? I read somewhere that brass SMAs should be torqued to 5 in-lbs (0.57 N-m) and stainless steel SMAs should be torqued to 8 in-lbs (0.9 N-m), as determined by the male connector.? I suppose you don't want to overtorque an SMA male mating with a 3.5 mm female to avoid overpenetration and damage to the female (sounds painful!).? I understand a connector gauge is in order here because of the poor control over center pin protrusion in SMA males and the fragility of 3.5 mm and 2.92 mm (K connectors) female coaxial connectors.
Thanks.
Jim Ford
------ Original Message ------
Sent: 4/14/2020 6:18:49 AM
Subject: Re: [HP-Agilent-Keysight-equipment] hp8350b/hp83595a front panel mod
Hi Jan,
The semi-rigid is standard .141 with precision stainless steel
SMA connectors. It is L-shaped with a bit of an offset in the leg
that goes to the front panel connector:
<pegndchliabjcfdn.jpg>
Please note that the front panel connector is not just a
feedthrough, it has a DC block built into it. If you substitute a
straight bulkhead connector you lose that DC protection. I would
recommend removing the rear panel connector and using it instead.
You can always revert to rear panel output if you need to. There's
precious little room in the plug in to add a relay to allow
switching back and forth. If you use your 3.5mm bulkhead connector
I'd recommend a connector saver and an external DC block. Better
yet go to an SMA bulkhead connector instead of the 3.5mm as I'd
bet you'll be using SMA for everything else as 3.5mm connectors
are expensive and fragile.
Since you will be mating 3.5mm to SMA do be aware that those
connections should be torqued to 5 in/lb, .57 N/m, not the usual
SMA to SMA or 3.5 to 3.5 value of 8 in/lb, .9 N/m
If amplitude accuracy needs to be within specs you'll need to do
an RF amplitude calibration once everything is in place as you've
made changes to the RF output path.
Good luck with the project and let us know how it goes. I've
switched an 8340B from rear to front panel output but my 83595A's
came with front panel output so I've not needed to modify them.
Cheers,
Steve K.
WB?DBS
On 4/13/2020 11:27 AM, Jan de Jongh
wrote:
Hi all,
I'm trying to get my RF output on the front panel instead of at
the rear on an hp83595a (26.5 GHz), while leaving the rear-panel
option intact. I already have the front-panel connector from ebay
and need to make a semi-rigid with 3.5mm connectors to (I guess,
need to verify) the 55 dB attenuator.
Does anyone know what type of semi-rigid is used by HP in the
hp83595a for the RF output and/or has suggestions for sourcing the
connectors? (Sorry, complete semi-rigid noob here...) BTW, the
front-panel connector I have is an APC3.5 feed through.
Thanks,
Jan
|
Re: Service Support Software
Hi Dick
I have not tried it, but I would be very surprised if the HP service support software would run on a virtual XP machine due to the GPIB interface drivers required.
Also getting it to run is only the start of the problem as it also needs a physical GPIB interface and other support software. Getting some GPIB interfaces to work can be a nightmare at best with most require vast amounts of support software to be installed, Microsoft were not the inventors of bloat ware, the GPIB interface manufacturers were.
George
G6HIG
On Tuesday, 14 April 2020, 22:56:38 BST, Dick <w1ksz@...> wrote:
Windows Virtual PC was not on my Windows 7 computer. So I
went through all the wickets to download it and install it.
When I tried to open it, it spit back that my computer was not
of high enough pedigree to use this program.
That really got me ticked off ... I go through all this effort only
to be told I can't use it !!! What sick mind wrote this program.
I expected that Windows 7 would provide enough backward
compatibility to run this program (SSS). Maybe not or maybe the
SW package I downloaded from the HP site had a Name & PW
already imbedded. In which case it's useless.
In any case, I guess I will never know.
73, Dick, W1KSZ
On Tue, Apr 14, 2020 at 09:44 AM, Dick wrote: Since I don't have an XP machine available Hi Dick: Win 7? has backwards compatibility to run XP software, by installing an XP virtual machine. Microsoft called it XP Mode. It allows you to run Windows XP inside a virtual machine within Windows 7.
I ran it for years... worked pretty good for me.
Best regards and wishes.
Roy
|
Cubdriver
Jared Cabot
