Tektronix purchased Keithley, broke my instruments?

[Winfield Hill]

Trying to get my Keithley 2600-series SMU
instruments to work with my browser and
Java, I keep getting an error message,

"Blocked by Content Security Policy
An error occurred during a connection to www.tek.com."

"Firefox prevented this page from loading
in this way because the page has a content
security policy that disallows it."

I can't find any way to disable blocking.
The browser doesn't show that a block even
occurred, so I can't add an exception.

Last time I ran these instruments using Java
was about when Tektronix purchased Keithley.

I didn't know my local communication process
was contacting the factory, and some website.
How do the browser and instrument even know
about Tektronix? Re-routing Keithley.com?

I have $35k tied up in these instruments!


--
Thanks,
- Win

 

[Sylvia Else]

On 4/07/2019 11:44 am, Winfield Hill wrote:

Trying to get my Keithley 2600-series SMU
instruments to work with my browser and
Java, I keep getting an error message,

"Blocked by Content Security Policy
An error occurred during a connection to www.tek.com."

"Firefox prevented this page from loading
in this way because the page has a content
security policy that disallows it."

I can't find any way to disable blocking.
The browser doesn't show that a block even
occurred, so I can't add an exception.

Last time I ran these instruments using Java
was about when Tektronix purchased Keithley.

I didn't know my local communication process
was contacting the factory, and some website.
How do the browser and instrument even know
about Tektronix? Re-routing Keithley.com?

I have $35k tied up in these instruments!

You might want to try turning off the content security policy in Firefox

<https://stackoverflow.com/questions/27323631/how-to-override-content-security-policy-while-including-script-in-browser-js-con>

to determine whether that's the source of the problem. Ignore the
question, just follow the answer.

Clearly, if it works, you then have to figure out a way to use it
without compromising the security for other sites, but one step at a time.

As for the redirect, FWIW, an access of a web page at Keithley.com
returns a "Moved Permanently" response pointing to
http://www.tek.com/keithley

Sylvia.

 

[Martin Riddle]

On 3 Jul 2019 18:44:56 -0700, Winfield Hill <winfieldhill@yahoo.com>
wrote:

Trying to get my Keithley 2600-series SMU
instruments to work with my browser and
Java, I keep getting an error message,

"Blocked by Content Security Policy
An error occurred during a connection to www.tek.com."

"Firefox prevented this page from loading
in this way because the page has a content
security policy that disallows it."

I can't find any way to disable blocking.
The browser doesn't show that a block even
occurred, so I can't add an exception.

Last time I ran these instruments using Java
was about when Tektronix purchased Keithley.

I didn't know my local communication process
was contacting the factory, and some website.
How do the browser and instrument even know
about Tektronix? Re-routing Keithley.com?

I have $35k tied up in these instruments!

You can also try adding the web address to the allow list in the Java
console in the control panel.

Cheers

 

[Lasse Langwadt Christense]

torsdag den 4. juli 2019 kl. 03.45.05 UTC+2 skrev Winfield Hill:

Trying to get my Keithley 2600-series SMU
instruments to work with my browser and
Java, I keep getting an error message,

"Blocked by Content Security Policy
An error occurred during a connection to www.tek.com."

"Firefox prevented this page from loading
in this way because the page has a content
security policy that disallows it."

I can't find any way to disable blocking.
The browser doesn't show that a block even
occurred, so I can't add an exception.

Last time I ran these instruments using Java
was about when Tektronix purchased Keithley.

I didn't know my local communication process
was contacting the factory, and some website.
How do the browser and instrument even know
about Tektronix? Re-routing Keithley.com?

I have $35k tied up in these instruments!

I've had what sounds like similar problems, I think something along
these lines https://www.java.com/en/download/faq/exception_sitelist.xml
was required

 

[Winfield Hill]

Winfield Hill wrote...

Trying to get my Keithley 2600-series SMU
instruments to work with my browser and
Java, I keep getting an error message,

"Blocked by Content Security Policy
An error occurred during a connection to www.tek.com."

"Firefox prevented this page from loading
in this way because the page has a content
security policy that disallows it."

I get this message: "Java TM SE Runtime Envirnoment (JRE)
version 6 or later that may be downloaded on the Keithley
Instruments website." Maybe why connection is attempted?

But I have JRE version 8 installed (and running).

Also, the permissions I granted to tek.com and to the
IP address of my instrument aren't helping, I still get
"An error occurred during a connection to www.tek.com."
and e5tc.


--
Thanks,
- Win

 

[Winfield Hill]

Lasse Langwadt Christensen wrote...

Winfield Hill wrote:

"Blocked by Content Security Policy
An error occurred during a connection to www.tek.com."

I've had what sounds like similar problems, I think
something along these lines
https://www.java.com/en/download/faq/exception_sitelist.xml
was required

Yes, Martin also suggested that. Adding https://www.tek.com
to the Java Control Panel - Exception Site list didn't help.

Maybe my real problem is the web app my browser is running
(served by the instrument) isn't recognizing Java running
on my system. Could there be a 32-bit / 64-bit issue?
In the past, my computer was running 32-bit Windows.


--
Thanks,
- Win

 

Winfield Hill <winfieldhill@yahoo.com> wrote in news:qfjlmo01hv7
@drn.newsguy.com:

I didn't know my local communication process
was contacting the factory, and some website.
How do the browser and instrument even know
about Tektronix? Re-routing Keithley.com?

I have $35k tied up in these instruments!

Big brother looks over your shoulder everywhere. So do companies
with hardware.

I used to get schematics with my stereo. Now I get my activity
logged, dispatched, and used against me.

Solid Works 'phones home' every time you run it.

Seems they "updated your firmware" from Keithley, and now it wants
to hit a tek site, which was apparently poorly constructed.

Very likely they will be getting it fixed. I think they should
remove the phone home 'feature'.

I hate "accepting" or "signing" online documents which always
allows them to do whatever they want.

 

Winfield Hill <winfieldhill@yahoo.com> wrote in news:qfkj8702sq0
@drn.newsguy.com:

Winfield Hill wrote...

Trying to get my Keithley 2600-series SMU
instruments to work with my browser and
Java, I keep getting an error message,

"Blocked by Content Security Policy
An error occurred during a connection to www.tek.com."

"Firefox prevented this page from loading
in this way because the page has a content
security policy that disallows it."

I get this message: "Java TM SE Runtime Envirnoment (JRE)
version 6 or later that may be downloaded on the Keithley
Instruments website." Maybe why connection is attempted?

But I have JRE version 8 installed (and running).

Also, the permissions I granted to tek.com and to the
IP address of my instrument aren't helping, I still get
"An error occurred during a connection to www.tek.com."
and e5tc.

Sometimes this is an ipv preference thing. It is attempting an
IPV6 connection and should not be. Not saying that is what it is,
but I had a similar lockout in the past that turned out to be that
the IPV use preference started out trying to connect via IPV6 access
and getting rejected.

 

[Winfield Hill]

Winfield Hill wrote...

Winfield Hill wrote...

Trying to get my Keithley 2600-series SMU
instruments to work with my browser and
Java, I keep getting an error message,

"Blocked by Content Security Policy
An error occurred during a connection to www.tek.com."

"Firefox prevented this page from loading
in this way because the page has a content
security policy that disallows it."

disable "mixed content warnings" in Firefox, changed
security.mixed_content.block_active_content
to false. Didn't help the access issue.


--
Thanks,
- Win

 

[Tom Gardner]

On 04/07/19 11:09, Winfield Hill wrote:

Winfield Hill wrote...

Trying to get my Keithley 2600-series SMU
instruments to work with my browser and
Java, I keep getting an error message,

"Blocked by Content Security Policy
An error occurred during a connection to www.tek.com."

"Firefox prevented this page from loading
in this way because the page has a content
security policy that disallows it."

I get this message: "Java TM SE Runtime Envirnoment (JRE)
version 6 or later that may be downloaded on the Keithley
Instruments website." Maybe why connection is attempted?

But I have JRE version 8 installed (and running).

Also, the permissions I granted to tek.com and to the
IP address of my instrument aren't helping, I still get
"An error occurred during a connection to www.tek.com."
and e5tc.

The Java Runtime Environment (JRE) itself won't be
supplied by the instrument; the instrument will only
supply the Java bytecode that will be executed by
/a/ JRE.

There can be, and probably are, multiple versions of
the JRE on your machine. In general each JRE will
contain its own security manager and security settings.
I suspect that is /a/ cause of the puzzlement.

So, it is necessary to find which JRE your browser
is invoking when it receives Java bytecode from the
instrument. That will be a browser-specific setting;
hopefully the setting can be changed!

 

[Steve Wilson]

Winfield Hill <winfieldhill@yahoo.com> wrote:

Lasse Langwadt Christensen wrote...

Winfield Hill wrote:

"Blocked by Content Security Policy
An error occurred during a connection to www.tek.com."

I've had what sounds like similar problems, I think
something along these lines
https://www.java.com/en/download/faq/exception_sitelist.xml was
required

Yes, Martin also suggested that. Adding https://www.tek.com
to the Java Control Panel - Exception Site list didn't help.

Maybe my real problem is the web app my browser is running
(served by the instrument) isn't recognizing Java running
on my system. Could there be a 32-bit / 64-bit issue?
In the past, my computer was running 32-bit Windows.

Win,

I'm running FF version 52.9.0 (32-bit) on Win XP, and
FF version 67.0 (32-bit) in Win7.

Neither have any problem connecting to https://www.tek.com

I removed Java long ago from both systems as a security risk.

Isn't there any other way to run your instruments?

 

[Jeroen Belleman]

Steve Wilson wrote:

Winfield Hill <winfieldhill@yahoo.com> wrote:

Lasse Langwadt Christensen wrote...

Winfield Hill wrote:

"Blocked by Content Security Policy
An error occurred during a connection to www.tek.com."

I've had what sounds like similar problems, I think
something along these lines
https://www.java.com/en/download/faq/exception_sitelist.xml was
required

Yes, Martin also suggested that. Adding https://www.tek.com
to the Java Control Panel - Exception Site list didn't help.

Maybe my real problem is the web app my browser is running
(served by the instrument) isn't recognizing Java running
on my system. Could there be a 32-bit / 64-bit issue?
In the past, my computer was running 32-bit Windows.

Win,

I'm running FF version 52.9.0 (32-bit) on Win XP, and
FF version 67.0 (32-bit) in Win7.

Neither have any problem connecting to https://www.tek.com

I removed Java long ago from both systems as a security risk.

Isn't there any other way to run your instruments?

Yes. It's likely to understand SCPI as well, hopefully
without needing binary transfers, which I still haven't
figured out.

Jeroen Belleman

 

[Steve Wilson]

Jeroen Belleman <jeroen@nospam.please> wrote:

Steve Wilson wrote:

Isn't there any other way to run your instruments?

Yes. It's likely to understand SCPI as well, hopefully
without needing binary transfers, which I still haven't
figured out.

Jeroen Belleman

In most cases, I like to make my own instrumentation. Modern chips have
become so powerful, it is often difficult to find an old Tektronix or HP
instrument that can match them.

This approach is much more flexible. You can tailor the measurement to the
actual need, and change it at any time. You can rarely modify any existing
instrument for custom requirements.

This also gets rid of the huge weight and space required, plus the enormous
power dissipation that just heats the room.

If needed, you can always repair your own instrumentation. It is time-
consuming, and sometimes difficult or impossible to repair old equipment.

The TEK 475 is an example. If the vertical output chip blows, a replacement
may be difficult to find. My scopes could go at any time.

More mundane, some equipment has mandantory updates. The internal battery
in a memory chip may die and require replacement. I have this problem.

Another issue may be leaking capacitors that corrode the pcb. I found out
about this problem after purchasing several instruments that had the
problem.

Or the electrolytics may have dried out and need replacement. This can be a
massive problem.

 

[Winfield Hill]

Martin Riddle wrote...

Java archive....

https://www.oracle.com/technetwork/java/javase/archive-139210.html

Thanks!


--
Thanks,
- Win

 

[Martin Riddle]

On 4 Jul 2019 03:58:42 -0700, Winfield Hill <winfieldhill@yahoo.com>
wrote:

Winfield Hill wrote...

Winfield Hill wrote...

Trying to get my Keithley 2600-series SMU
instruments to work with my browser and
Java, I keep getting an error message,

"Blocked by Content Security Policy
An error occurred during a connection to www.tek.com."

"Firefox prevented this page from loading
in this way because the page has a content
security policy that disallows it."

disable "mixed content warnings" in Firefox, changed
security.mixed_content.block_active_content
to false. Didn't help the access issue.

I had old HP print servers that did not work with the current versions
of Java SE. Had to go back to the recomended version.
You should try 6 if that is what it recomends.
The latest versions block cross domain fetches.

Cheers

 

[Martin Riddle]

Java archive....

<https://www.oracle.com/technetwork/java/javase/archive-139210.html>

Cheers

 

[Jeroen Belleman]

Steve Wilson wrote:

Jeroen Belleman <jeroen@nospam.please> wrote:

Steve Wilson wrote:

Isn't there any other way to run your instruments?

Yes. It's likely to understand SCPI as well, hopefully
without needing binary transfers, which I still haven't
figured out.

Jeroen Belleman

In most cases, I like to make my own instrumentation. Modern chips have
become so powerful, it is often difficult to find an old Tektronix or HP
instrument that can match them.

This approach is much more flexible. You can tailor the measurement to the
actual need, and change it at any time. You can rarely modify any existing
instrument for custom requirements.

I suppose we all do that, to some extent. But I can't easily
match the performance of an HP8753D network analyzer, or a
Tektronix S-6 sampler, so I'll keep using those for as long
as I can. It's not so very long ago that it occurred to me
that I could use a DAC and an ADC to control the Tek 7T11
and 7S11 plug-ins, so I now have a 10GHz digital scope/TDR
that's almost half a century old. That's hugely better than
taking pictures of the screen!

I also hate it when instrument manufacturers try to tie my
hands. I'll refuse to buy any new National Instruments,
Lecroy or anything running Windows or requiring special
opaque driver software for that reason.

Instruments, even of reputable manufacturers, often have
weird limitations. The HP8753D, for example, delivers
measured data as complex pairs *without* the frequency
data. My Tabor WW1071 AWG has gaussian or sinc pulses
right way up, but *not* upside-down. The hardware can do
it easily enough, but the software botches it. Snarl!

Jeroen Belleman

 

[Klaus Bahner]

On 04-07-2019 03:44, Winfield Hill wrote:

Trying to get my Keithley 2600-series SMU
instruments to work with my browser and
Java, I keep getting an error message,

"Blocked by Content Security Policy
An error occurred during a connection to www.tek.com."

"Firefox prevented this page from loading
in this way because the page has a content
security policy that disallows it."

Have you tried another browser?

Klaus

 

[Steve Wilson]

Jeroen Belleman <jeroen@nospam.please> wrote:

Steve Wilson wrote:
Jeroen Belleman <jeroen@nospam.please> wrote:

Steve Wilson wrote:

Isn't there any other way to run your instruments?

Yes. It's likely to understand SCPI as well, hopefully
without needing binary transfers, which I still haven't figured out.

Jeroen Belleman

In most cases, I like to make my own instrumentation. Modern chips have
become so powerful, it is often difficult to find an old Tektronix or
HP instrument that can match them.

This approach is much more flexible. You can tailor the measurement to
the actual need, and change it at any time. You can rarely modify any
existing instrument for custom requirements.

I suppose we all do that, to some extent. But I can't easily
match the performance of an HP8753D network analyzer, or a
Tektronix S-6 sampler, so I'll keep using those for as long
as I can. It's not so very long ago that it occurred to me
that I could use a DAC and an ADC to control the Tek 7T11
and 7S11 plug-ins, so I now have a 10GHz digital scope/TDR
that's almost half a century old. That's hugely better than
taking pictures of the screen!

I also hate it when instrument manufacturers try to tie my
hands. I'll refuse to buy any new National Instruments,
Lecroy or anything running Windows or requiring special
opaque driver software for that reason.

Instruments, even of reputable manufacturers, often have
weird limitations. The HP8753D, for example, delivers
measured data as complex pairs *without* the frequency
data. My Tabor WW1071 AWG has gaussian or sinc pulses
right way up, but *not* upside-down. The hardware can do
it easily enough, but the software botches it. Snarl!

Jeroen Belleman

8753D? That's only 6GHz. I'm sure I have seen detailed instructions for a
wideband network analyzer that covers that range. A cheap log amp gives
amplitude with a 120 DB range, plus phase information. Output in whatever
format you like. It's well within reach to anyone who is used to building
their own receivers and who can work with low level signals. That's on my
ToDo list.

The S-6 sampler only goes to 11.5 GHz. I can beat that.

In some cases, it's not worth duplicating a cheap instrument. I wouldn't
bother trying to make a stud finder. Existing ones are too cheap and work
too well.

In other cases, I have no choice. I'm making an ozone fabric sterilizer
simply because there are none available that fit my requirements.

So it depends on your particular needs. In most cases, you can build it
much, much cheaper that buying it used.

In most cases, you can build it faster than trying to troubleshoot or
repair problems the seller didn't bother telling you about. Especially with
intermittents.

And heaven help you if you come across an instrument that someone tried to
modify. I have an HP3456 that someone tried to modify by tearing out the
cooling fan. It runs for a while then shuts down due to overheating. There
are no documents that describe the modification. In this case, I'll try
replacing the fan. If that doesn't work, I think I'll just buy another and
keep this one for spare parts.

 

[John Robertson]

On 2019/07/04 8:31 a.m., Winfield Hill wrote:

Martin Riddle wrote...

Java archive....

https://www.oracle.com/technetwork/java/javase/archive-139210.html

Thanks!

Did you get this resolved?

When I tried the site I got a pop-up error message about a video that
would not play. When I closed that I then could visit the site as
expected. Running Firefox on a Mac.

As an alternative, try skipping the index page with the FAQ page:

https://www.tek.com/faq

If you are still unsuccessful try using Opera instead of Google Chrome, etc.

John :-#)#