Re: 495 mixer beam leads replaced with C2 diode pack
On 1/1/2013 2:43 AM, spinroyd wrote: see the Photo under 495 showing how i replaced the diodes using a C2 diode pack at a fraction of the cost of the aftermarket mixer and it performs much better. That's a pretty slick repair. You sure your name isn't McGyver instead of spinroyd? ;-) Well done! Mark
|
Found this page:
<>
It's rather confusing. Are these Tek scope models? Or Kiethley instrument models? Is the "C32" a firmware rev? Is it really shared among all the 24xx models?
Head-spinningly,
Dave
-=-=-=-
toggle quoted message
Show quoted text
On 31 December 2012, at 10:02 PM, Dave C wrote: Anyone know what the latest rev of the firmware is for this scope? And source for this file and what's required to install it if needed?
Thanks,
Dave
|
495 mixer beam leads replaced with C2 diode pack
see the Photo under 495 showing how i replaced the diodes using a C2 diode pack at a fraction of the cost of the aftermarket mixer and it performs much better.
|
Anyone have a front cover for this scope they'd like to let go of?
Please, no web references (ie, e-pain, et. al). Only inquiring of list members' resources.
Please contact me off-list.
Thanks,
Dave
|
Anyone know what the latest rev of the firmware is for this scope? And source for this file and what's required to install it if needed?
Thanks,
Dave
|
Re: trying to chase down a cursor and a focus problem on a 2465
Is problem #1 happening to both the cursors? Or can you move one of them
the full extent?
?
The d-t and d pots are dual units and scanned by the dac on A5. They are
phased 180 degrees apart. If this just happens with only one cursor, maybe one
end of one of the dual pots is open. You might try swapping the front panels to
see. At least take a careful look at them.
?
?
Strange problem. Hope you identify it for all our sakes.
?
Happy New Year all. May you each get all the Tek scopes you need.
?
?
toggle quoted message
Show quoted text
----- Original Message -----
Sent: Monday, December 31, 2012 9:16
PM
Subject: Re: [TekScopes] Re: trying to
chase down a cursor and a focus problem on a 2465
?
This is a plain vanilla 2465, no A or B. The A5 display board (and the
entire scope) is all
through hole construction. So it doesn't have
those leaky SMD
tantalums. Not saying
there aren't bad caps somewhere,
but at least they shouldn't spew out
corrosive electrolyte
all over the
board.
Also, this has an EAROM chip instead of the Dallas NVRAM. Sure
would
like to know why
they switched to the Dallas part in later
scopes, was the EAROM unreliable?
I purchased this essentially as a
parts scope for my *other* 2465, which
works
wonderfully.
Unfortunately, this scope works well enough that I'm feeling
motivated
to repair it
instead of using it for parts
:-)
Scott
On 12/31/2012 9:06 AM, Ed Breya wrote:
> If the
scope is a 2465B, this may be a symptom of a well-known problem with leaky SMT
electrolytic caps on the display board, as I recall. This issue comes up quite
often - in fact, when I first joined the group, I noticed such a discussion
and got concerned about my 2465B, so I started asking about it. Thanks to the
group, I found that mine did indeed have the problem, and I managed to fix it
before any serious damage was done. If not for that, it would have been
damaged eventually, since this is my "best scope" that sits on the shelf -
reserved for when all the others have crapped out. I would have never known
until the time came to use it.
>
> The other long-term
deterioration issue is the battery-backed RAM for the calibration constants -
mine is OK for now, but I still haven't resolved a "permanent" solution. This
issue also comes up regularly.
>
> Ed
>
> --- In TekScopes@...,
"Scott Burris" wrote:
>>
Hi,
>>
>> I'm hoping for a hint in the right direction on
two problems
>> I'm trying to solve on a Tek 2465 scope. I've already
done the
>> power supply tests in Table 5-1 of the service manual
and
>> all voltages seem to be in tolerance, including
ripple.
>>
>> Problem #1: One of the cursors can only be
adjusted over the left
>> 1/3rd of the screen. It can go all the way
to the left, but when
>> adjusting it to the right, it gets "stuck"
about part way over.
>> However, the on screen readout, measuring
frequency, continues
>> to change as the knob is turned. If you turn
the knob in the
>> opposite direction, eventually the cursor become
"unstuck" and
>> can be returned to the left side of the
screen.
>>
>> Problem #2: The on-screen readouts can't be
brought into focus
>> at the same time. Turning the focus control, I
can bring either
>> the upper readout or the lower readout into
focus, but then the
>> other is slightly fuzzy. I tried tweaking the
astigmatism control,
>> but no luck in getting this to
improve.
>>
>> Do these problems ring a bell with anyone?
Otherwise the scope
>> seems to be working
fine.
>>
>> Although the power supplies seem to be OK,
should I recap them
>> as a proactive measure? Presumably this won't
help my two
>> problems. I'm aware of the condoraudio.com document
for a
>> 2465B. Is there a list of caps to order and replace for a
2465?
>> If not, I guess I could make one up and publish
it.
>>
>> I'm tempted to thermal epoxy a small heatsink on
U800 for good
>> measure. Any downsides to doing that? Mine seems to
be a Tek
>> made part, not a Maxim, does that improve heat
reliability?
>>
>> Thanks!
>>
>>
Scott
>>
>
>
>
>
------------------------------------
>
> Yahoo! Groups
Links
>
>
>
|
Re: trying to chase down a cursor and a focus problem on a 2465
One more thing on the cursor problem - it could also be that something just runs out of dynamic range and can only go so far - right where the cursor stops advancing. If you follow the signals through, it should show where. A bad amplifier, missing supply, or other minor component failures can do this. If the stopping point is very precisely defined, suspect the DAC, but if it's "loose," then look at the rest.
Ed
toggle quoted message
Show quoted text
--- In TekScopes@..., "Ed Breya" <edbreya@...> wrote:
Since you have two identical scopes, you can try swapping A5 or other modules, if it's not too complicated or risky - that would narrow down the problem areas. Just keep track of which goes with which to keep the calibrations right.
Your cursor problem may be DAC-related. Since the count is working, it seems like the incrementing signal is being processed OK by the brain, but the DAC which places the cursor location in the display isn't getting the message, presuming it's an analog or time positioning type scheme. Maybe one or more fairly significant DAC bits are stuck or missing.
Ed
Also, Happy New Year all, we're only a few hours away here, although it's already 2013 for some.
--- In TekScopes@..., Scott Burris <slburris@> wrote:
This is a plain vanilla 2465, no A or B. The A5 display board (and the
entire scope) is all
through hole construction. So it doesn't have those leaky SMD
tantalums. Not saying
there aren't bad caps somewhere, but at least they shouldn't spew out
corrosive electrolyte
all over the board.
Also, this has an EAROM chip instead of the Dallas NVRAM. Sure would
like to know why
they switched to the Dallas part in later scopes, was the EAROM unreliable?
I purchased this essentially as a parts scope for my *other* 2465, which
works wonderfully.
Unfortunately, this scope works well enough that I'm feeling motivated
to repair it
instead of using it for parts :-)
Scott
On 12/31/2012 9:06 AM, Ed Breya wrote:
If the scope is a 2465B, this may be a symptom of a well-known problem with leaky SMT electrolytic caps on the display board, as I recall. This issue comes up quite often - in fact, when I first joined the group, I noticed such a discussion and got concerned about my 2465B, so I started asking about it. Thanks to the group, I found that mine did indeed have the problem, and I managed to fix it before any serious damage was done. If not for that, it would have been damaged eventually, since this is my "best scope" that sits on the shelf - reserved for when all the others have crapped out. I would have never known until the time came to use it.
The other long-term deterioration issue is the battery-backed RAM for the calibration constants - mine is OK for now, but I still haven't resolved a "permanent" solution. This issue also comes up regularly.
Ed
--- In TekScopes@..., "Scott Burris" <slburris@> wrote:
Hi,
I'm hoping for a hint in the right direction on two problems
I'm trying to solve on a Tek 2465 scope. I've already done the
power supply tests in Table 5-1 of the service manual and
all voltages seem to be in tolerance, including ripple.
Problem #1: One of the cursors can only be adjusted over the left
1/3rd of the screen. It can go all the way to the left, but when
adjusting it to the right, it gets "stuck" about part way over.
However, the on screen readout, measuring frequency, continues
to change as the knob is turned. If you turn the knob in the
opposite direction, eventually the cursor become "unstuck" and
can be returned to the left side of the screen.
Problem #2: The on-screen readouts can't be brought into focus
at the same time. Turning the focus control, I can bring either
the upper readout or the lower readout into focus, but then the
other is slightly fuzzy. I tried tweaking the astigmatism control,
but no luck in getting this to improve.
Do these problems ring a bell with anyone? Otherwise the scope
seems to be working fine.
Although the power supplies seem to be OK, should I recap them
as a proactive measure? Presumably this won't help my two
problems. I'm aware of the condoraudio.com document for a
2465B. Is there a list of caps to order and replace for a 2465?
If not, I guess I could make one up and publish it.
I'm tempted to thermal epoxy a small heatsink on U800 for good
measure. Any downsides to doing that? Mine seems to be a Tek
made part, not a Maxim, does that improve heat reliability?
Thanks!
Scott
------------------------------------
Yahoo! Groups Links
|
Re: trying to chase down a cursor and a focus problem on a 2465
Since you have two identical scopes, you can try swapping A5 or other modules, if it's not too complicated or risky - that would narrow down the problem areas. Just keep track of which goes with which to keep the calibrations right.
Your cursor problem may be DAC-related. Since the count is working, it seems like the incrementing signal is being processed OK by the brain, but the DAC which places the cursor location in the display isn't getting the message, presuming it's an analog or time positioning type scheme. Maybe one or more fairly significant DAC bits are stuck or missing.
Ed
Also, Happy New Year all, we're only a few hours away here, although it's already 2013 for some.
toggle quoted message
Show quoted text
--- In TekScopes@..., Scott Burris <slburris@...> wrote:
This is a plain vanilla 2465, no A or B. The A5 display board (and the
entire scope) is all
through hole construction. So it doesn't have those leaky SMD
tantalums. Not saying
there aren't bad caps somewhere, but at least they shouldn't spew out
corrosive electrolyte
all over the board.
Also, this has an EAROM chip instead of the Dallas NVRAM. Sure would
like to know why
they switched to the Dallas part in later scopes, was the EAROM unreliable?
I purchased this essentially as a parts scope for my *other* 2465, which
works wonderfully.
Unfortunately, this scope works well enough that I'm feeling motivated
to repair it
instead of using it for parts :-)
Scott
On 12/31/2012 9:06 AM, Ed Breya wrote:
If the scope is a 2465B, this may be a symptom of a well-known problem with leaky SMT electrolytic caps on the display board, as I recall. This issue comes up quite often - in fact, when I first joined the group, I noticed such a discussion and got concerned about my 2465B, so I started asking about it. Thanks to the group, I found that mine did indeed have the problem, and I managed to fix it before any serious damage was done. If not for that, it would have been damaged eventually, since this is my "best scope" that sits on the shelf - reserved for when all the others have crapped out. I would have never known until the time came to use it.
The other long-term deterioration issue is the battery-backed RAM for the calibration constants - mine is OK for now, but I still haven't resolved a "permanent" solution. This issue also comes up regularly.
Ed
--- In TekScopes@..., "Scott Burris" <slburris@> wrote:
Hi,
I'm hoping for a hint in the right direction on two problems
I'm trying to solve on a Tek 2465 scope. I've already done the
power supply tests in Table 5-1 of the service manual and
all voltages seem to be in tolerance, including ripple.
Problem #1: One of the cursors can only be adjusted over the left
1/3rd of the screen. It can go all the way to the left, but when
adjusting it to the right, it gets "stuck" about part way over.
However, the on screen readout, measuring frequency, continues
to change as the knob is turned. If you turn the knob in the
opposite direction, eventually the cursor become "unstuck" and
can be returned to the left side of the screen.
Problem #2: The on-screen readouts can't be brought into focus
at the same time. Turning the focus control, I can bring either
the upper readout or the lower readout into focus, but then the
other is slightly fuzzy. I tried tweaking the astigmatism control,
but no luck in getting this to improve.
Do these problems ring a bell with anyone? Otherwise the scope
seems to be working fine.
Although the power supplies seem to be OK, should I recap them
as a proactive measure? Presumably this won't help my two
problems. I'm aware of the condoraudio.com document for a
2465B. Is there a list of caps to order and replace for a 2465?
If not, I guess I could make one up and publish it.
I'm tempted to thermal epoxy a small heatsink on U800 for good
measure. Any downsides to doing that? Mine seems to be a Tek
made part, not a Maxim, does that improve heat reliability?
Thanks!
Scott
------------------------------------
Yahoo! Groups Links
|
Re: trying to chase down a cursor and a focus problem on a 2465
As far as problem #2, are the traces and cursors also only in focus at the top or bottom of the screen? It seems odd that the readout would be affected that way but not the traces and cursors. I would take a look at the edge focus and geometry adjustments. Maybe the readout focus problem has something to do with the dynamic centering. That apparently interacts with the Z-axis circuits and CRT focus assemblies. On Mon, 31 Dec 2012 18:16:02 -0800, Scott Burris <slburris@...> wrote: This is a plain vanilla 2465, no A or B. The A5 display board (and the
entire scope) is all
through hole construction. So it doesn't have those leaky SMD
tantalums. Not saying
there aren't bad caps somewhere, but at least they shouldn't spew out
corrosive electrolyte
all over the board.
Also, this has an EAROM chip instead of the Dallas NVRAM. Sure would
like to know why
they switched to the Dallas part in later scopes, was the EAROM unreliable?
I purchased this essentially as a parts scope for my *other* 2465, which
works wonderfully.
Unfortunately, this scope works well enough that I'm feeling motivated
to repair it
instead of using it for parts :-)
Scott
On 12/31/2012 9:06 AM, Ed Breya wrote:
If the scope is a 2465B, this may be a symptom of a well-known problem with leaky SMT electrolytic caps on the display board, as I recall. This issue comes up quite often - in fact, when I first joined the group, I noticed such a discussion and got concerned about my 2465B, so I started asking about it. Thanks to the group, I found that mine did indeed have the problem, and I managed to fix it before any serious damage was done. If not for that, it would have been damaged eventually, since this is my "best scope" that sits on the shelf - reserved for when all the others have crapped out. I would have never known until the time came to use it.
The other long-term deterioration issue is the battery-backed RAM for the calibration constants - mine is OK for now, but I still haven't resolved a "permanent" solution. This issue also comes up regularly.
Ed
--- In TekScopes@..., "Scott Burris" <slburris@...> wrote:
Hi,
I'm hoping for a hint in the right direction on two problems
I'm trying to solve on a Tek 2465 scope. I've already done the
power supply tests in Table 5-1 of the service manual and
all voltages seem to be in tolerance, including ripple.
Problem #1: One of the cursors can only be adjusted over the left
1/3rd of the screen. It can go all the way to the left, but when
adjusting it to the right, it gets "stuck" about part way over.
However, the on screen readout, measuring frequency, continues
to change as the knob is turned. If you turn the knob in the
opposite direction, eventually the cursor become "unstuck" and
can be returned to the left side of the screen.
Problem #2: The on-screen readouts can't be brought into focus
at the same time. Turning the focus control, I can bring either
the upper readout or the lower readout into focus, but then the
other is slightly fuzzy. I tried tweaking the astigmatism control,
but no luck in getting this to improve.
Do these problems ring a bell with anyone? Otherwise the scope
seems to be working fine.
Although the power supplies seem to be OK, should I recap them
as a proactive measure? Presumably this won't help my two
problems. I'm aware of the condoraudio.com document for a
2465B. Is there a list of caps to order and replace for a 2465?
If not, I guess I could make one up and publish it.
I'm tempted to thermal epoxy a small heatsink on U800 for good
measure. Any downsides to doing that? Mine seems to be a Tek
made part, not a Maxim, does that improve heat reliability?
Thanks!
Scott
------------------------------------
Yahoo! Groups Links
|
Re: trying to chase down a cursor and a focus problem on a 2465
This is a plain vanilla 2465, no A or B. The A5 display board (and the entire scope) is all
through hole construction. So it doesn't have those leaky SMD tantalums. Not saying
there aren't bad caps somewhere, but at least they shouldn't spew out corrosive electrolyte
all over the board.
Also, this has an EAROM chip instead of the Dallas NVRAM. Sure would like to know why
they switched to the Dallas part in later scopes, was the EAROM unreliable?
I purchased this essentially as a parts scope for my *other* 2465, which works wonderfully.
Unfortunately, this scope works well enough that I'm feeling motivated to repair it
instead of using it for parts :-)
Scott
toggle quoted message
Show quoted text
On 12/31/2012 9:06 AM, Ed Breya wrote: If the scope is a 2465B, this may be a symptom of a well-known problem with leaky SMT electrolytic caps on the display board, as I recall. This issue comes up quite often - in fact, when I first joined the group, I noticed such a discussion and got concerned about my 2465B, so I started asking about it. Thanks to the group, I found that mine did indeed have the problem, and I managed to fix it before any serious damage was done. If not for that, it would have been damaged eventually, since this is my "best scope" that sits on the shelf - reserved for when all the others have crapped out. I would have never known until the time came to use it.
The other long-term deterioration issue is the battery-backed RAM for the calibration constants - mine is OK for now, but I still haven't resolved a "permanent" solution. This issue also comes up regularly.
Ed
--- In TekScopes@..., "Scott Burris" <slburris@...> wrote:
Hi,
I'm hoping for a hint in the right direction on two problems
I'm trying to solve on a Tek 2465 scope. I've already done the
power supply tests in Table 5-1 of the service manual and
all voltages seem to be in tolerance, including ripple.
Problem #1: One of the cursors can only be adjusted over the left
1/3rd of the screen. It can go all the way to the left, but when
adjusting it to the right, it gets "stuck" about part way over.
However, the on screen readout, measuring frequency, continues
to change as the knob is turned. If you turn the knob in the
opposite direction, eventually the cursor become "unstuck" and
can be returned to the left side of the screen.
Problem #2: The on-screen readouts can't be brought into focus
at the same time. Turning the focus control, I can bring either
the upper readout or the lower readout into focus, but then the
other is slightly fuzzy. I tried tweaking the astigmatism control,
but no luck in getting this to improve.
Do these problems ring a bell with anyone? Otherwise the scope
seems to be working fine.
Although the power supplies seem to be OK, should I recap them
as a proactive measure? Presumably this won't help my two
problems. I'm aware of the condoraudio.com document for a
2465B. Is there a list of caps to order and replace for a 2465?
If not, I guess I could make one up and publish it.
I'm tempted to thermal epoxy a small heatsink on U800 for good
measure. Any downsides to doing that? Mine seems to be a Tek
made part, not a Maxim, does that improve heat reliability?
Thanks!
Scott
------------------------------------
Yahoo! Groups Links
|
Re: Front panel layout software ( related to PCB )
This is a sample of what FrontDesigner does, ~$35.00US.
The label was made on glossy photo paper and then a self-stick lamination film laid on it and trimmed to size. It was then adhered to the panel with an Elmers glue stick which allows a little positioning movement before setting up.
It can be removed with water if changes wanted.
Larry
toggle quoted message
Show quoted text
--- In TekScopes@..., "Henrik Olsson" <henrik@...> wrote:
Hi,
You might want to take a look at Abacoms FrontDesigner.
It's not a general purpose CAD program but it is made specifically for
designing front panels and the price seems reasonable to me.
/Henrik.
-----Original message-----
While we are somewhat on the subject:
A nice pcb often often needs a nice control panel.
I used Autocad for this several years ago but it is now way to pricey
for my limited needs.
Seems like the tough one is to have items line up with rotary switch
positions.
Any ideas will be appreciated.
Thanks,
Bert
|
Re: [TekScopes2] pcb software
Cool name (Al Legro) for a layout person. Are you
related to Mr. Cadence? The Cadence router is named
Allegro.
?
Ross
?
I have been using PCB software for 30 years and have
experience the the major applications and many lower cost
applications.? Recently an associate purchased Eagle and he was
disappointed.? It did not have the basic features that any current
app should have.? What these are:? the ability to have multiple
and changeable footprints for schematic symbols; real-time forward and
backward annotation; on-the-fly pin swapping, net resolution; a SPICE file
for each proper-named part,? to name a few...
My 2
cents...
- AL
|
toggle quoted message
Show quoted text
--- On Sun, 12/30/12, Mark Wendt (Contractor)
wrote:
From: Mark
Wendt (Contractor)
Subject: Re:
[TekScopes] Re: [TekScopes2] pcb software
To:
TekScopes@...
Date: Sunday, December 30, 2012, 4:47
AM
On 12/29/2012 12:56 PM, John Griessen
wrote: > "Does the Linux version of Eagle have the same board size
limitation?" > > Yes. Finally managed to poke around
their site.? Full-blown, single seat license is $1640
USD.? Not cheap, but not the most expensive CAD software I've
ever seen by a country mile. The Eagle Hobbyist version which has
"99 schematic sheets, 6 signal layers and 160x100 mm routing area
(6.4 in x 4 in)" goes for $169 USD, and has the same features as the
Standard version except the number of users, which goes for $820
USD.? Both the Hobbyist and Standard are priced
single-seat.? "Routing area" is identical between the
two. The Professional gives you a 150" x 150" routing
area. Mark ------------------------------------ Yahoo!
Groups Links <*> To visit your group on the web, go
to: ? ? <*>
Your email settings: ? ? Individual Email |
Traditional <*> To change settings online go to: ?
? ?
? (Yahoo! ID required) <*> To change settings via
email: ? ? TekScopes-digest@...
? ? TekScopes-fullfeatured@...<*>
To unsubscribe from this group, send an email to: ? ? TekScopes-unsubscribe@...<*>
Your use of Yahoo! Groups is subject to: ? ?
|
Re: Novice Question on PCB layout and making (perhaps off topic not sure)
Thank you all who responded, I am running it all down, So much information so little time * smile*. I sincerely appreciate each and every response. ? Happy New Year. Rob ?
toggle quoted message
Show quoted text
From: TekScopes@... [mailto:TekScopes@...] On Behalf Of Stefan Trethan
Sent: Monday, December 31, 2012 1:13 AM
To: TekScopes@...
Subject: Re: [TekScopes] Novice Question on PCB layout and making (perhaps off topic not sure)? ?
|
Re: [TekScopes2] pcb software
On 31/12/2012 23:40, Alex wrote: When you have multiple identical gates in a logic chip, to simplify routing you swap them around on the PCB and the schematic gets updated.
Also, for programmable logic, it's a must. If you have 1500+ pins, chances are some nets are going to be crossed somewhere! Right! I have to go back to the schematic in Kicad, AFAIK anyway. Thanks Gordon
|
Re: [TekScopes2] pcb software
When you have multiple identical gates in a logic chip, to simplify routing you swap them around on the PCB and the schematic gets updated.
Also, for programmable logic, it's a must. If you have 1500+ pins, chances are some nets are going to be crossed somewhere!
toggle quoted message
Show quoted text
--- In TekScopes@..., Gordon <tekscopes@...> wrote:
On 31/12/2012 22:48, Al Legro wrote:
on-the-fly pin swapping What is it (sort of obvious) and why would you need it?
Cheers
Gordon
|
Is there high voltage?? I assume so, if you get something on the screen.
In X-Y mode can you get anything presented?
Check voltages on the Intensity pot.? If they are wrong, there won't be a display.
You have one of two problems.
1) There is no CRT beam current.
2) The spot is off screen.
With this premise you can measure voltages.? For instance, if the horizontal deflection plates have the same voltage on both, and if the vertical plates have the same voltage on both, the spot should be centered.
With the sweep set to very slow, you can watch the horizontal deflection voltages move, with a normal voltmeter.
If there is no beam current, it's due to one of three things - CRT heater not lit, no high voltage, or incorrect potentials on the remaining elements.
Pressing Beam Finder should reduce
the deflection voltages and increase the intensity.
Bob
|
--- On Mon, 12/31/12, lnazeem@... wrote:
From: lnazeem@...
Subject: [TekScopes] Re: 466 no trace or dot
To: TekScopes@...
Date: Monday, December 31, 2012, 2:19 PM
?
hi
Thanks for your response, I have service manual and all PSU voltages seem in acceptable norms.
Since i don't have a second scope i think i am a bit stuck.
--- In TekScopes@..., Bob Albert wrote:
>
> First step is obtain the service manual.?? Then measure all the power supply voltages.?? When they are all correct you can then proceed with standard troubleshooting techniques; you can get plenty of help in this forum.
>
> Bob
>
> --- On Sun, 12/30/12, lnazeem@... wrote:
>
> From: lnazeem@...
> Subject: [TekScopes] 466 no trace or dot
> To: TekScopes@...
> Date: Sunday, December 30, 2012, 5:19 PM
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> ??
>
>
>
>
>
>
>
>
>
> Hi Everyone
>
>
>
> I do not have much oscilloscope repair experience but have a Tek 466 I would like to repair. It has no trace on the display when set to auto trigger mode,and a what appears to be a compressed trace approximately 1cm long centered in the display in single sweep mode.I would really appreciate some guidance.
>
>
>
> Thanks
>
|
Re: [TekScopes2] pcb software
On 31/12/2012 22:48, Al Legro wrote: on-the-fly pin swapping What is it (sort of obvious) and why would you need it? Cheers Gordon
|
Re: Front panel layout software ( related to PCB )
I'm just starting to check out Target. http://target-3001.com/? They have integrated Front Panel Express, PCB-POOL, assembly, Spice and importing of other packages into the whole nine yards.? You can also submit traditional Gerbers to the PCB house of your choice.? Free and pay versions.
What I picked as "first project" is too messy.? A "remote control".? It does require an imported DXF as a board outline (which it can do). A minimal amount of stuff on the "component side" and a lot of stuff on the solder side.
|
--- On Mon, 12/31/12, jerry massengale wrote:
From: jerry massengale
Subject: Re: [TekScopes] Front panel layout software ( related to
PCB )
To: TekScopes@...
Date: Monday, December 31, 2012, 12:37 PM
?
Hi,
I am a happy user of this tool
http://www.frontpanelexpress.com/
Jerry Massengale
-----Original Message-----
From: Bert Haskins
To: TekScopes
Sent: Mon, Dec 31, 2012 10:35 am
Subject: [TekScopes] Front panel layout software ( related to PCB )
?
While we are somewhat on the subject:
A nice pcb often often needs a nice control panel.
I used Autocad for this several years ago but it is now way to pricey
for my limited needs.
Seems like the tough one is to have items line up with rotary switch
positions.
Any ideas will be appreciated.
Thanks,
Bert
|
Re: [TekScopes2] pcb software
I have been using PCB software for 30 years and have experience the the major applications and many lower cost applications.? Recently an associate purchased Eagle and he was disappointed.? It did not have the basic features that any current app should have.? What these are:? the ability to have multiple and changeable footprints for schematic symbols; real-time forward and backward annotation; on-the-fly pin swapping, net resolution; a SPICE file for each proper-named part,? to name a few...
My 2 cents...
- AL
|
--- On Sun, 12/30/12, Mark Wendt (Contractor) wrote:
From: Mark Wendt (Contractor)
Subject: Re: [TekScopes] Re: [TekScopes2] pcb
software
To: TekScopes@...
Date: Sunday, December 30, 2012, 4:47 AM
On 12/29/2012 12:56 PM, John Griessen wrote: > "Does the Linux version of Eagle have the same board size limitation?" > > Yes. Finally managed to poke around their site.? Full-blown, single seat license is $1640 USD.? Not cheap, but not the most expensive CAD software I've ever seen by a country mile. The Eagle Hobbyist version which has "99 schematic sheets, 6 signal layers and 160x100 mm routing area (6.4 in x 4 in)" goes for $169 USD, and has the same features as the Standard version except the number of users, which goes for $820 USD.? Both the Hobbyist and Standard are priced single-seat.? "Routing area" is identical between the two. The Professional gives you a 150" x 150" routing
area. Mark ------------------------------------ Yahoo! Groups Links <*> To visit your group on the web, go to: ? ? <*> Your email settings: ? ? Individual Email | Traditional <*> To change settings online go to: ? ? ? ? (Yahoo! ID required) <*> To change settings via email: ? ? TekScopes-digest@... ? ? TekScopes-fullfeatured@...<*> To unsubscribe from this group, send an email to: ? ? TekScopes-unsubscribe@...<*> Your use of Yahoo! Groups is subject to: ? ?
|
Re: Front panel layout software ( related to PCB )
On 12/31/2012 02:52 PM, Alex wrote: Seems like the tough one is to have items line up with rotary switch
> positions. In a line and circle drawing program like PCB, you can put an arc of angle like your switch has as a reference, then make text at an angle, then position on the mark. A 30 or 22 degree arc needs use of a low level command called an action command, but is not hard to do. If you find any kind of program that will output a vector drawing like you want, it can be translated to svg or postscript and imported.
|
David Hess