Re: HP 8656B signal generator
The? manual is already on the Keysight web site. But I purchased a CD containing the? HP8656B user and maintenance manuals.? The CD version was much better than the Keysight download!
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Bostonman, Yes I think I still have the image. I finally sold this scope because I had an opportunity to get a DSO8104A.? I'm trying to upload everything I have on the 54832 but it's a big file. Whenever it's ready, I'll post the link. For now, this is the content of the C directory (it's not an image, but it might help
By any chance, were you able to find the drive to image? I can't communicate with the SSD in my scope because it has only 44 pins with (what I recently learned) Vcc on pin 41 and 42 and no other power connector. The USB adapter I have doesn't seem to output 5V on 41 and 42, so I need another adapter to connect 5V to them.
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Re: ROM / EEPROM firmware dump
I knew about that, actually. I prefer to do it myself.
Not only do I prefer having the EEPROM in a socket, in case of failure
(yes, I have seen them fail), but it is my view the fellow who knows how
to do the code trick should post the process or tool to the group's file
area for the sake of long-term preservation.
Thanks...
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On 01-Oct-20 19:09, Andrew Hakman wrote: Those Nicer options in your 8753C can be enabled through the service
menu as well with a code generated by someone on this list that
originally worked on the design. No need to desolder the eeprom. You
do have to take the cover off to make sure the jumper (or dip switch,
I forget now) is set to enable writes though...
On Thu, Oct 1, 2020 at 7:00 PM Bruce Lane <kyrrin@...> wrote:
It depends on the instrument involved. However, for the most part, the
process involves removing the physical memory devices from said
instrument (ROMs, EPROMs, EEPROMs, whatever) and reading them in a
device reader/programmer.
The whole thing is pretty easy if the devices are socketed (most are).
However, I have run into cases where the memory device involved is
either soldered into the board or is a surface-mount device. Either can
be dealt with, if you have the appropriate tools and skill set.
Example: My recent acquisition of an HP 8753C network analyzer.
Enabling a couple of the nicer options required me to desolder the
EEPROM, read it into a file, edit the appropriate bytes in the file,
reprogram the device with the modified file and reinstall it (I
installed a socket first).
Happy tweaking.
On 01-Oct-20 10:37, groupio@... wrote:
Hi,
i've been reading some posts regarding gear repairs and there is
sometimes mentioned to backup the firmware. I have an idea how it works,
but it'll be great when you will share your expertice, howtows and used
Equipment when you are facing that kind of task
greetz
Andreas
--
---
Bruce Lane, ARS KC7GR
kyrrin (at) bluefeathertech dot com
"Quando Omni Flunkus Moritati" (Red Green)
--
---
Bruce Lane, ARS KC7GR
kyrrin (at) bluefeathertech dot com
"Quando Omni Flunkus Moritati" (Red Green)
|
Re: ROM / EEPROM firmware dump
Those Nicer options in your 8753C can be enabled through the service
menu as well with a code generated by someone on this list that
originally worked on the design. No need to desolder the eeprom. You
do have to take the cover off to make sure the jumper (or dip switch,
I forget now) is set to enable writes though...
toggle quoted message
Show quoted text
On Thu, Oct 1, 2020 at 7:00 PM Bruce Lane <kyrrin@...> wrote:
It depends on the instrument involved. However, for the most part, the
process involves removing the physical memory devices from said
instrument (ROMs, EPROMs, EEPROMs, whatever) and reading them in a
device reader/programmer.
The whole thing is pretty easy if the devices are socketed (most are).
However, I have run into cases where the memory device involved is
either soldered into the board or is a surface-mount device. Either can
be dealt with, if you have the appropriate tools and skill set.
Example: My recent acquisition of an HP 8753C network analyzer.
Enabling a couple of the nicer options required me to desolder the
EEPROM, read it into a file, edit the appropriate bytes in the file,
reprogram the device with the modified file and reinstall it (I
installed a socket first).
Happy tweaking.
On 01-Oct-20 10:37, groupio@... wrote:
Hi,
i've been reading some posts regarding gear repairs and there is
sometimes mentioned to backup the firmware. I have an idea how it works,
but it'll be great when you will share your expertice, howtows and used
Equipment when you are facing that kind of task
greetz
Andreas
--
---
Bruce Lane, ARS KC7GR
kyrrin (at) bluefeathertech dot com
"Quando Omni Flunkus Moritati" (Red Green)
|
Re: ROM / EEPROM firmware dump
It depends on the instrument involved. However, for the most part, the
process involves removing the physical memory devices from said
instrument (ROMs, EPROMs, EEPROMs, whatever) and reading them in a
device reader/programmer.
The whole thing is pretty easy if the devices are socketed (most are).
However, I have run into cases where the memory device involved is
either soldered into the board or is a surface-mount device. Either can
be dealt with, if you have the appropriate tools and skill set.
Example: My recent acquisition of an HP 8753C network analyzer.
Enabling a couple of the nicer options required me to desolder the
EEPROM, read it into a file, edit the appropriate bytes in the file,
reprogram the device with the modified file and reinstall it (I
installed a socket first).
Happy tweaking.
toggle quoted message
Show quoted text
On 01-Oct-20 10:37, groupio@... wrote: Hi,
i've been reading some posts regarding gear repairs and there is
sometimes mentioned to backup the firmware. I have an idea how it works,
but it'll be great when you will share your expertice, howtows and used
Equipment when you are facing that kind of task
greetz
Andreas
--
---
Bruce Lane, ARS KC7GR
kyrrin (at) bluefeathertech dot com
"Quando Omni Flunkus Moritati" (Red Green)
|
Re: HP step attenuator repair
I bought a set of ¡°RUIHUA ?No. 4031 Watch Crown ?O ¨C Rings¡± from China The size you need is 2mm dia with 1 mm centre hole. They work perfectly but do take a while to arrive. ? Sent from for Windows 10 ?
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From: Frank SSent: Friday, 2 October 2020 8:50 AM To: [email protected]Subject: Re: [HP-Agilent-Keysight-equipment] HP step attenuator repair ? On Thu, Oct 1, 2020 at 06:57 AM, dfrie wrote: I bought a set like was shown on one of the youtube videos. Going to take over a month from China
Thanks all
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Re: ROM / EEPROM firmware dump
Memories!? I still have two BP Microsystems EP-1 programers for the older chips and an ee-tools for the newer stuff.? Those EP-1's sure programed a lot eproms in their day.? PC BIOS, TAPR TNC's, repeater controller boards and nurse call floor map eproms were burned on those EP1's.? Saved us a lot of money!? I even turned my PC clone into a full-fledged IBM PC and did some hacking on the old Apple two and on the Mac.? Back in the day you had to have or borrow a programmer or you were crippled.? Lately I am updating some AEA pk-232 TNC's and a couple of Kantronics TNC'S to a useful version.? I miss the old stuff.? I like the functionality of the newer equipment but just try to repair it after a few years.? I can component level support 35 year old computer equipment better than 10 year old equipment. That stuff is mostly board swap or buy a new one.? ??.??
randy.ab9go@....? This message sent to you from my mobile device via speech-to-text technology. -- Thanks, Randy randy.ab9go@...
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Re: HP 8567A service manual
On Mon, Sep 28, 2020 at 01:56 AM, Jos Raven wrote:
KO4BB
Thanks, I looked before and didn't see anything. It may have been my search entry It would be nice to have info on tear-down. I was told the HP8568A or B is a close second Frank
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Re: HP step attenuator repair
On Thu, Oct 1, 2020 at 06:57 AM, dfrie wrote:
I bought a set like was shown on one of the youtube videos. Going to take over a month from China
Thanks all
|
Re: ROM / EEPROM firmware dump
Hello,
usually, you remove the EEPROMs and read them with an EEProm
reader.
With best regards
Tam HANNA
Enjoy electronics? Join 15k7 other followers by visiting the Crazy Electronics Lab at
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Hi,
i've been reading some posts regarding gear repairs and there is
sometimes mentioned to backup the firmware. I have an idea how it
works, but it'll be great when you will share your expertice,
howtows and used Equipment when you are facing that kind of task
greetz
Andreas
|
Re: 8753es VGA interface to laptop...
Every 8753ES I've ever seen has a GPIB port.? I have a Prologix GPIB-ETHERNET. The also make a USB version for $150
If all you want are screen plots, a Prologix and KE5FX's freeware toolset are al you need.
I have an an Epiphan VGA2USB LR device (~$500) which works well. It has some quirks that I find annoying.? It needs a valid, stable VGA signal to record. Any change and it drops recording. ? As an example, you can't use it to record most PCs booting because any change of resolution or interruption in sync drops out of record. You need to manually restart it. I've not looked at the output of the 8753ES, but many instruments I have drop sync when I punch the system button to set up printing or captures.
There are other open source tools for grabbing screens and s-parameter data over the GPIB.
Oz, N1OZ (in DFW!)
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Re: ROM / EEPROM firmware dump
Andreas, ? The firmware usually resides in some sort of memory, most commonly a PROM (Programmable Read Only Memory), especially in the older HP equipment, an EPROM (Erasable PROM).? This could be an EEPROM (Electrically EPROM) but most commonly a UV EPROM which requires an ultraviolet light source to erase the chips. ? The goal is to be able to read, archive and program the chips.? There are multiple programmers that can do this task including ¡®stand-alone¡¯ programmers as well as programmers that require a computer to interface with.? The cheaper programmers generally don¡¯t offer ¡®built-in¡¯ protocols for a lot of chips, particularly programming the chips.? Reading the chips is usually much easier to accomplish but might require some sort of ¡®adapter¡¯ to allow you to connect the chip to the programmer if the ¡®pin-out¡¯ of the chip does not match the ¡®pin-out¡¯ of your programmer and it¡¯s selected chip.? These adapters can be found as well. ? The more esoteric the chip, the more important it is to find a programmer that supports that particular chip. ? I have several BP Microsystems programmers and Advin programmers.? These usually require a WinXP computer with a parallel port to connect to.? The software is available on the Web.? The first BP Micro programmer I got was an EP-1140 EPROM programmer.? It was very useful and supported most of the chips I found in my old equipment.? Thereafter, I became interested in a ¡®Universal Programmer¡¯ that would support EPROM¡¯s as well as many other chips including PIC¡¯s and others.? The first one of those I got was a BP-1200. ? I also have several Advin programmers.? They are a bit less ¡®user friendly¡¯ to use due to their software but are very good programmers.? You might want to look at an Advin MVP as a versatile ¡®Universal Programmer¡¯. ? The newer, and therefore more expensive, programmers will work with later operating systems and connect via USB. ? You can find small UV EPROM Erasers that will accommodate up to 8 ¨C 10 chips or go larger for one that would accommodate maybe 100 chips or more. ? Once the chip is ¡®read¡¯ the data can be saved, typically as a .BIN file or a HEX file. ? I¡¯m not sure if this is the type of information you were looking for but it won¡¯t take long to become ¡®fluent¡¯ in ¡®EPROM¡¯ once you get involved in this. ? Hope this helps. ? Joe ?
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From: [email protected] [mailto:[email protected]] On Behalf Of groupio@...
Sent: Thursday, October 01, 2020 12:37 PM
To: [email protected]
Subject: [HP-Agilent-Keysight-equipment] ROM / EEPROM firmware dump ? Hi,
i've been reading some posts regarding gear repairs and there is sometimes mentioned to backup the firmware. I have an idea how it works, but it'll be great when you will share your expertice, howtows and used Equipment when you are facing that kind of task
greetz
Andreas
|
Re: Looking for small fiber washers
Hi Mike,
Thanks for the offer but someone is sending me a few of the original washers so I'm set.
Thanks,
Barry - N4BUQ
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----- Original Message ----- From: "Mike Vande Voort" <mike@...>
To: [email protected]
Sent: Thursday, October 1, 2020 3:05:57 PM
Subject: Re: [HP-Agilent-Keysight-equipment] Looking for small fiber washers
Washers that cushion the spacers between wafers ?
Can you measure OD and maybe use a numbered drill bit for ID ? I have some
of this kind of stuff hiding in drawers
Mike
On Thu, Oct 1, 2020, 10:38 AM Leon Robinson <leon-robinson@...>
wrote:
I just got an email from BOKERS yesterday, they have almost anything you
could ever want.
Leon Robinson K5JLR
-------- Original message --------
From: n4buq <n4buq@...>
Date: 10/01/2020 10:14 AM (GMT-06:00)
To: [email protected]
Subject: [HP-Agilent-Keysight-equipment] Looking for small fiber washers
I'm in the process of repairing an Acton Labs VTVM. The RANGE switch was
a Centralab model with steatite wafers and someone had broken the wafers -
some of which were in pieces that made gluing them back together somewhat
impractical. I have obtained glass-epoxy versions of those wafers and am
reassembling the switch; however, the original damage was enough to destroy
one of the tiny fiber washers that are used on the mounting strut
assemblies.
Does anyone know where I could get one (or, maybe, a few) of those? I've
searched the web and can't find them and the Electroswitch site (they
bought Centralab) doesn't show them as available parts either. If you're
familiar with them, they accommodate a #4 machine screw on the ID but the
OD is very small as well and all I can find are "standard" #4 fiber washers
which are too large.
I think these also are/were available in plastic or nylon and if there's a
source for those, they would work as well.
Sorry for the long email for such a small request but I don't know
anywhere else to look for these.
Thanks,
Barry - N4BUQ
|
Re: Looking for small fiber washers
Washers that cushion the spacers between wafers ? Can you measure OD and maybe use a numbered drill bit for ID ? I have some of this kind of stuff hiding in drawers Mike
I just got an email from BOKERS yesterday, they have almost anything you could ever want.
Leon Robinson ?K5JLR -------- Original message -------- From: n4buq < n4buq@...> Date: 10/01/2020 10:14 AM (GMT-06:00) To: [email protected] Subject: [HP-Agilent-Keysight-equipment] Looking for small fiber washers I'm in the process of repairing an Acton Labs VTVM.? The RANGE switch was a Centralab model with steatite wafers and someone had broken the wafers - some of which were in pieces that made gluing them back together somewhat impractical.? I have obtained glass-epoxy versions of those wafers and am reassembling the switch; however, the original damage was enough to destroy one of the tiny fiber washers that are used on the mounting strut assemblies. Does anyone know where I could get one (or, maybe, a few) of those?? I've searched the web and can't find them and the Electroswitch site (they bought Centralab) doesn't show them as available parts either.? If you're familiar with them, they accommodate a #4 machine screw on the ID but the OD is very small as well and all I can find are "standard" #4 fiber washers which are too large. I think these also are/were available in plastic or nylon and if there's a source for those, they would work as well. Sorry for the long email for such a small request but I don't know anywhere else to look for these. Thanks, Barry - N4BUQ
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Re: Looking for small fiber washers
I'm happy for you, Barry!? Boker's does make a huge selection of washers, though.? Used some nylon ones years ago at a former employer.
Jim Ford?
Sent from my Verizon, Samsung Galaxy smartphone
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-------- Original message -------- From: n4buq <n4buq@...> Date: 10/1/20 11:25 AM (GMT-08:00) Subject: Re: [HP-Agilent-Keysight-equipment] Looking for small fiber washers
A list member has offered to send a few of those to me.? Thanks to all.? Problem solved.? Great group! Thanks, Barry - N4BUQ ----- Original Message ----- > From: "Barry" <n4buq@...> > To: [email protected]> Sent: Thursday, October 1, 2020 10:50:20 AM > Subject: Re: [HP-Agilent-Keysight-equipment] Looking for small fiber washers > > I hadn't seen that business before.? Interesting; however, they don't stock > washers (at least that's what the website states). > > Thanks, > Barry - N4BUQ > > ----- Original Message ----- > > From: "Leon Robinson" <leon-robinson@...> > > To: [email protected]> > Sent: Thursday, October 1, 2020 10:38:28 AM > > Subject: Re: [HP-Agilent-Keysight-equipment] Looking for small fiber > > washers > > > > I just got an email from BOKERS yesterday, they have almost anything you > > could ever want. > > > > > > Leon Robinson ?K5JLR > > > > -------- Original message -------- > > From: n4buq <n4buq@...> > > Date: 10/01/2020? 10:14 AM? (GMT-06:00) > > To: [email protected]> > Subject: [HP-Agilent-Keysight-equipment] Looking for small fiber washers > > > > I'm in the process of repairing an Acton Labs VTVM.? The RANGE switch was a > > Centralab model with steatite wafers and someone had broken the wafers - > > some of which were in pieces that made gluing them back together somewhat > > impractical.? I have obtained glass-epoxy versions of those wafers and am > > reassembling the switch; however, the original damage was enough to destroy > > one of the tiny fiber washers that are used on the mounting strut > > assemblies. > > > > Does anyone know where I could get one (or, maybe, a few) of those?? I've > > searched the web and can't find them and the Electroswitch site (they > > bought > > Centralab) doesn't show them as available parts either.? If you're familiar > > with them, they accommodate a #4 machine screw on the ID but the OD is very > > small as well and all I can find are "standard" #4 fiber washers which are > > too large. > > > > I think these also are/were available in plastic or nylon and if there's a > > source for those, they would work as well. > > > > Sorry for the long email for such a small request but I don't know anywhere > > else to look for these. > > > > Thanks, > > Barry - N4BUQ > > > > > > > > > > > > > > > > > > > > > > >
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Re: Clarification : Brass gears for the 8640B
For what it is worth, I installed a set of Ram's brass gears (purchased via eBay) in one of my 8640B's two years ago.? They certainly are not "molded," and I've been very happy with the results.
For those who might be interested, I describe my experiences installing them (as well as how to fix the problem of contacts falling off the switches), in this blog post:
- Jeff, k6jca
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Re: Looking for small fiber washers
A list member has offered to send a few of those to me. Thanks to all. Problem solved. Great group!
Thanks,
Barry - N4BUQ
toggle quoted message
Show quoted text
----- Original Message ----- From: "Barry" <n4buq@...>
To: [email protected]
Sent: Thursday, October 1, 2020 10:50:20 AM
Subject: Re: [HP-Agilent-Keysight-equipment] Looking for small fiber washers
I hadn't seen that business before. Interesting; however, they don't stock
washers (at least that's what the website states).
Thanks,
Barry - N4BUQ
----- Original Message -----
From: "Leon Robinson" <leon-robinson@...>
To: [email protected]
Sent: Thursday, October 1, 2020 10:38:28 AM
Subject: Re: [HP-Agilent-Keysight-equipment] Looking for small fiber
washers
I just got an email from BOKERS yesterday, they have almost anything you
could ever want.
Leon Robinson ?K5JLR
-------- Original message --------
From: n4buq <n4buq@...>
Date: 10/01/2020 10:14 AM (GMT-06:00)
To: [email protected]
Subject: [HP-Agilent-Keysight-equipment] Looking for small fiber washers
I'm in the process of repairing an Acton Labs VTVM.? The RANGE switch was a
Centralab model with steatite wafers and someone had broken the wafers -
some of which were in pieces that made gluing them back together somewhat
impractical.? I have obtained glass-epoxy versions of those wafers and am
reassembling the switch; however, the original damage was enough to destroy
one of the tiny fiber washers that are used on the mounting strut
assemblies.
Does anyone know where I could get one (or, maybe, a few) of those?? I've
searched the web and can't find them and the Electroswitch site (they
bought
Centralab) doesn't show them as available parts either.? If you're familiar
with them, they accommodate a #4 machine screw on the ID but the OD is very
small as well and all I can find are "standard" #4 fiber washers which are
too large.
I think these also are/were available in plastic or nylon and if there's a
source for those, they would work as well.
Sorry for the long email for such a small request but I don't know anywhere
else to look for these.
Thanks,
Barry - N4BUQ
|
Thanks. He had sent to me too.
?
Colin G4CWH
?
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From: [email protected] [mailto:[email protected]]
On Behalf Of Jon via groups.io
Sent: 01 October 2020 18:38
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] Spammer
?
Just banned that email address from the groups I admin.
We just have to be vigilant and try and catch them while they are moderated or as quickly afterward as we can. ?
Jon
On Thu, Oct 1, 2020 at 12:34 Dave Daniel <kc0wjn@...> wrote:
?This is happening at an increased rate across multiple groups. I suspect that the new phishing worm is being used. See
Thus, removing that email address may not be effective.
Please ban
jara8462@... - sending phishing emails as PMs in
reply to the list.
David
|
Just banned that email address from the groups I admin.
We just have to be vigilant and try and catch them while they are moderated or as quickly afterward as we can. ?
Jon
On Thu, Oct 1, 2020 at 12:34 Dave Daniel < kc0wjn@...> wrote: ?This is happening at an increased rate across multiple groups. I suspect that the new phishing worm is being used. See
Thus, removing that email address may not be effective.
DaveD Please ban jara8462@... - sending phishing emails as PMs inreply to the list.David
<mime-attachment>
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ROM / EEPROM firmware dump
Hi,
i've been reading some posts regarding gear repairs and there is sometimes mentioned to backup the firmware. I have an idea how it works, but it'll be great when you will share your expertice, howtows and used Equipment when you are facing that kind of task
greetz
Andreas
|
Bruce Lane
Randy.AB9GO
Mike Vande Voort