Date   

Re: Sources for shipping cartons for vintage Tek scopes?

ditter2
 

--- In TekScopes@yahoogroups.com, "keithostertag" wrote:

What are sources for shipping cartons for vintage Tek scopes, like the 500 and 7000 series? I rarely find boxes that large, or sturdy. Are there common items/businesses that use that size/type box?

Any other tips for shipping/packing?

Thanks,
Keith Ostertag
Keith,

In addition to the numerous suggestions offered for packaging filler, I will add a tip that I found very effective. Quite often during shipping the knobs on a heavy scope become broken as the scope shifts around in its package. Although they are lighter instruments than 500 series, I found 7000 series scopes are more susceptible to this damage, as the knob shells are thinner.

I find a scrap cardboard box that has a bottom dimension as close as possible to the front panel height and width of the scope. I then cut the sides of the box about 8 cm (3 inches) from the bottom of the box. If the box dimensions exceed the size of the scope, I trim the corners on two sides. Leaving one corner intact. I then fold the box bottom to snuggly fit the front of the scope, keeping the bottom a few cm away from the end of the knobs. It may be necessary to trim cutouts for the feet in the front of the scope. I then tape the sides of the box to the sides of the scope with packing tape, on all four sides (top, bottom and both sides). I have found that this technique is effective in preventing the knobs from being damaged during shipment.

Instruments with isolated knobs, switches or BNC connectors on the rear can protect these with a simple piece of cardboard, folded in a V shape and securely taped to the rear panel.

Steve


Re: DC Loads for Testing 2465B and 7000 Series SMPS

 

Hi Albert,

I have a couple of 7603 rectifiers laying around that have good unregulated outputs very similar to the 7704A unregulated voltages. I will not have a 7603 connected. The connection will be from the 7603 output connectors to the 7704a low voltage regulator board to a min load fixture. No mainframes involved. I may power the 7603 rectifier with a variac if needed. I only have one bad 7704a power supply left. The others have been fixed and are running so I am not in a big hurry. I have plenty of cables to make the connections.


Jerry Massengale



-----Original Message-----
From: Albert
To: TekScopes
Sent: Tue, Feb 12, 2013 12:17 pm
Subject: [TekScopes] Re: DC Loads for Testing 2465B and 7000 Series SMPS

 
Hi Jerry,

Nice idea to feed the LV board with another power supply. You plan to use the rectifier outputs from a 7603 so you probably mean the unregulated outputs. Then the 7603 has no protection. I would use the regulated 7603 outputs. That requires slight modifications in divider chains in order to increase all regulated outputs by a few volts. I think there is still enough voltage difference between unreg and reg then to prevent drop-out. (For a first test the LV board under test doesn't need heavy loads, so the unreg voltages can remain quite high.)
The 7704A display unit (HV, vert and hor amp) can be replaced by about 11 W load at the 54 V square wave (see message #48756). I'm not sure whether the 7704A PS should work then or that still some plugin load is needed.

Albert

--- In TekScopes@..., jerry massengale wrote:
>
> Hi,
>
> I recently used Alberts load value to build a load for 3 7704a power supplies that were not working. I added a 3k load for the hv drive lines. I found that one of the power supplies would not start reliably with that load but started easily in it's 7704A.
>
> I am building a prototype 7k extender with a switchable 47watt load. My plan is that it can be used in a mainframe with not plug ins or just the Aquistion (bottom half) of a 7704A. I am hoping that it will work with the non plug in loads to insure start up.
>
> I was planning to try and use a 7603 rectifier to build a test bed for the lv regulator of the 7704a as it has input voltages for the regulator that do not cycle off.
>
> When troubleshooting a switching power supply, it is helpful to use any tricks you can find.
>
> On 7704a power supplies i found it helpful to drive the power supply with a variac. At about 70vac in the supply starts ticking and you can use a scope to see how the secondaries are doing. You look for voltage pulses that proportionally higher or lower than the others. For example pulses on the -50V of -40v with 5v pulses on the +50v line suggest a problem on the +50v circuit.
>
> Dave on some others have a far better understanding of the controller ic in these supplies than I do.
>
>
>
>
>
> Jerry Massengale
>
>
>
>
>
>
> -----Original Message-----
> From: Albert
> To: TekScopes
> Sent: Tue, Feb 12, 2013 5:42 am
> Subject: [TekScopes] Re: DC Loads for Testing 2465B and 7000 Series SMPS
>
>
>
>
>
> Hi Charlie,
>
> In addition also have a look in the thread of message #83499.
>
> Albert
>


PYRAMID CALIBRATOR AND TESTER FOR TEKTRONIX OSCILLOSCOPES

Reed Dickinson
 

To all Forum Members:

Many forum members have expressed interest in the Pyramid Generator and, as promised in the eBay ad, I have sent out numerous copies of the manual. I have confidence in the design, usefulness and reliability of this product so, I am offering to send one to any forum member on a no penalty approval basis. The approval period would be 10 days after receipt. All I ask is that it not be handled roughly, that the buyer pay shipping both ways and the buyer, if returned, send $2 for a new battery. The approval buyer will send me $158.83 via PayPal or check and I will send one immediately. Absolutely no questions asked if return selected. Return deposit sent in same manner as received.

Reed Dickinson
1705 Stonehenge Drive
Tustin, CA 92780

714 838 6241
reed714@sbcglobal.net


Re: PYRAMID CALIBRATOR AND TESTER FOR TEKTRONIX OSCILLOSCOPES

Reed Dickinson
 

Hi Jerry:

I used the same PCB layout software to do the front panel.  It is TraxMaker.  All the dimensions for the PCB were in the software so why not use it for the front panel as well.  I was pleased with the outcome.  The only real problem was getting the 12 positions angled properly.  I will include a .pcb for the PG.

Reed


On 2/12/2013 6:15 AM, jerry massengale wrote:
 

Hi,

I admire your work. Did you use the A.G. Schaeffer panel maker?



Jerry Massengale



-----Original Message-----
From: Reed Dickinson
To: TekScopes
Cc: Pa4tim
Sent: Tue, Feb 12, 2013 1:09 am
Subject: [TekScopes] PYRAMID CALIBRATOR AND TESTER FOR TEKTRONIX OSCILLOSCOPES

 
I designed and built the Pyramid Generator (PG) to be a durable,
portable, well constructed device that would pass the test of time. I
personally detest cheap made items in flimsy plastic boxes that seem to
fall apart if you drop them or happen to set a hot soldering iron on
them. So, I opted for a more expensive die cast aluminum box with
bright blue epoxy paint front silk screen legends that have proved to be
very durable. And, I must applaud forum member Fred (PA4TIM) for his
acute observation that I used a 75 Ohm chassis mounted BNC connector and
labeled it 50 Ohms. The reason is that a 50 Ohm cable terminated in a
50 Ohm connector will fit a 75 Ohm chassis mount connector but not
visa-verse. If you are at an electronic swap meet and have the wrong
cable, are just plain out of luck if you are wanting to test a possible
purchase. The second reason is that the small impedance mismatch at the
low frequencies employed in the PR caused no appreciable
discontinuities. But, I must disagree with Fred when he says that it is
not imperative that the pyramid steps be time correlated to the
display. The PG uses a crystal controlled oscillator and is designed to
display any non-linearities that might be apparent in a trace, Merely
having the beginning and end of a trace fall on the correct vertical
graticule lines says little about the trace linearity over the full 10
DIV display.

Reed Dickinson



Re: DC Loads for Testing 2465B and 7000 Series SMPS

Albert <aodiversen@...>
 

Hi Jerry,

Nice idea to feed the LV board with another power supply. You plan to use the rectifier outputs from a 7603 so you probably mean the unregulated outputs. Then the 7603 has no protection. I would use the regulated 7603 outputs. That requires slight modifications in divider chains in order to increase all regulated outputs by a few volts. I think there is still enough voltage difference between unreg and reg then to prevent drop-out. (For a first test the LV board under test doesn't need heavy loads, so the unreg voltages can remain quite high.)
The 7704A display unit (HV, vert and hor amp) can be replaced by about 11 W load at the 54 V square wave (see message #48756). I'm not sure whether the 7704A PS should work then or that still some plugin load is needed.

Albert

--- In TekScopes@yahoogroups.com, jerry massengale wrote:

Hi,

I recently used Alberts load value to build a load for 3 7704a power supplies that were not working. I added a 3k load for the hv drive lines. I found that one of the power supplies would not start reliably with that load but started easily in it's 7704A.

I am building a prototype 7k extender with a switchable 47watt load. My plan is that it can be used in a mainframe with not plug ins or just the Aquistion (bottom half) of a 7704A. I am hoping that it will work with the non plug in loads to insure start up.

I was planning to try and use a 7603 rectifier to build a test bed for the lv regulator of the 7704a as it has input voltages for the regulator that do not cycle off.

When troubleshooting a switching power supply, it is helpful to use any tricks you can find.

On 7704a power supplies i found it helpful to drive the power supply with a variac. At about 70vac in the supply starts ticking and you can use a scope to see how the secondaries are doing. You look for voltage pulses that proportionally higher or lower than the others. For example pulses on the -50V of -40v with 5v pulses on the +50v line suggest a problem on the +50v circuit.

Dave on some others have a far better understanding of the controller ic in these supplies than I do.





Jerry Massengale






-----Original Message-----
From: Albert
To: TekScopes
Sent: Tue, Feb 12, 2013 5:42 am
Subject: [TekScopes] Re: DC Loads for Testing 2465B and 7000 Series SMPS





Hi Charlie,

In addition also have a look in the thread of message #83499.

Albert


Re: plastic binders for Tek instruction manuals

Artekmedia <manuals@...>
 

When I get time ( yeah right !) I will do a photo tutorial of how to do this without the machine small manual can be done in less than 1 minute by hand a large manual takes 2 minutes worst case

Dave
ArtekManuals

On 2/12/2013 10:13 AM, Jim Reese wrote:
 

ibico is the company that makes them here in the U.S.
 
I have a couple perforating/assembly machines and lots of plastic comb bindings. You almost need the machine to put the pages in the comb, or you have to be really patient to do it page by page!
 
Regards,
 
Jim

--- On Tue, 2/12/13, Christopher Hilton-Johnson wrote:

From: Christopher Hilton-Johnson
Subject: [TekScopes] plastic binders for Tek instruction manuals
To: TekScopes@...
Date: Tuesday, February 12, 2013, 11:01 AM



anyone have a source (either UK or US) for replacements for the (frequently brittle/broken) white plastic spiral binders used to hold the Tek instruction manuals together
My 7704A manual is now a loose collection of pages which seem deliberately to randomly re-order themselves into the most confusing order possible, seemingly done slyly & overnight!
regards
Chris HJ



-- 
Dave Henderson
Manuals@...
www.Artekmanuals.com
PO Box 175
Welch,MN 55089
651-269-4265


Re: Sources for shipping cartons for vintage Tek scopes?

David DiGiacomo
 

Lowes (it could be home depot, but I think it was lowes) has really
inexpensive shipping boxes. Much less expensive than U-haul, etc.
You can double box to increase strength.
Both of them sell very similar moving boxes, but no shipping boxes.
They are definitely not strong enough to hold a scope (if single
boxed). They have only a few sizes.

(If you are using them for moving or storage, I think the Lowe's boxes
are better, because they have hand holes punched out.)


Re: plastic binders for Tek instruction manuals

Paul Read <paulr@...>
 

Hi Team,

 

We got one at Lidl or Aldi , it is a bit crude, but for re-assembly, perfectly OK

 

Cheers

 

Paul


Re: plastic binders for Tek instruction manuals

Christopher Hilton-Johnson
 

Thanks to all for the comprehensive, and very useful responses.
I was searching for 'spiral' binders - wrong. Should have been 'comb' binders
 
As my old Ma used to say; asking the right question materially improves the chance of getting the right answer!
Thanks again
Chris HJ

 
 

 


Re: Sources for shipping cartons for vintage Tek scopes?

Ron York
 

Spray foam seems expensive for this task. But there are packaging
services with proper two part foam generators, specifically for
packaging. I think that foam is more dense and there will be no
curing issues. Still, the corners and other bits would need good
reinforcement for anything as heavy as a 500. In some cases it would
be well worth paying to have the entire box interior foamed - good
packing of odd objects can take so much time.

Lowes (it could be home depot, but I think it was lowes) has really
inexpensive shipping boxes. Much less expensive than U-haul, etc.
You can double box to increase strength.

Ron

On 2/10/13, Robert <go_boating_fast@yahoo.com> wrote:
Bag the peanuts in leftover grocery store bags. That will help them stay in
place.
Also, I have used spray foam. Leave the plastic bag open at top over night
to dry.
Bob


Re: plastic binders for Tek instruction manuals

 

Just go into Staples - they have the binding machines and plastic bindings in any size up to about 4".

The charge about a fiver (or less) to rebind a manual IIRC


Regards,
David Partridge



________________________________

From: TekScopes@yahoogroups.com [mailto:TekScopes@yahoogroups.com] On Behalf Of Christopher Hilton-Johnson
Sent: 12 February 2013 16:02
To: TekScopes@yahoogroups.com
Subject: [TekScopes] plastic binders for Tek instruction manuals


white plastic spiral binders


Re: plastic binders for Tek instruction manuals

Larry McDavid
 

These are widely referred to as "GBC" binder combs. The machines to punch the 19 holes and to install the binder combs are often seen on eBay. There are both manual and electric powered machines available; obviously, the manual machines are much less expensive.

Stationery stores such as Office Depot and Staples sell both the machines and the binder combs.

It is possible to install the combs without a machine, but it can be exasperating...

It is wise to buy a larger diameter comb than originally used as the pages will turn more easily and lay flat more readily--and be easier to install without a machine.

Kinko's--now FedExpress Office--can punch the holes and install the combs.

Larry

On 2/12/2013 8:18 AM, Dave Daniel wrote:
Yes, I just copied an old Heathkit HW-20 manual by removing the comb and
copying the manual and the fold-outs page-by-page. Re-assembling the
manual took a long time because the pages were somewhat brittle and i
didn't want to rip the comb holes open. It helps tremendously to line up
the comb holes as perfectly as possible with some sort of took and then
clamp the pages together with spring paper clamps. I probably wouldn't
have had the patience to do that twenty years ago.

Any idea what the perf/assembly machines go for on the used market?

Dave
...

--
Best wishes,

Larry McDavid W6FUB
Anaheim, California (SE of Los Angeles, near Disneyland)


Re: plastic binders for Tek instruction manuals

Tom Phillips
 

The binding machines that I have used are big and heavy. For me it wouldn't be practical to own one. I think the copy shop (Kinko's or other) is the best approach to fixing your binding. Don't know about the colors they stock.

Another approach, if you are OK with deviating from the stock look is to buy one of the special ring binders that have multiple oblong rings that exactly fit the hole pattern used for plastic spines.

Cheers,
Tom


Re: Bonehead move of the day

Dave Daniel
 

Well, I replaced some broken binding posts on a DM502 yesterday. I took the entire front panel apart so I could glue the plastic bedding part together, since it was cracked (you know, "as long as you're in there"). I re-assembled everything, including new binding posts, and was about to re-solder the binding post connections and probe power connector when I noticed I had the extraction tab in wrong.

A couple of hours later, after my disgust had evaporated, I disassembled everything again, reset the extractor assembly, and re-assembled the front panel.

Dave

On 2/12/2013 9:08 AM, Mark Wendt wrote:
Troubleshooting a bouncing trace on an SC502. Narrowed it down to the
transistor string on the F&I board. Figured one was getting hot, since
the trace didn't start bouncing until after a sufficient warm-up
period. Looking at the transistors, I grab the can of freeze spray.
Start shooting the spray on the transistors while watching the trace.
Look a the transistors and don't see a shield of frost building up like
normal, even though I've sprayed them for 3 - 5 seconds. Trace still
bouncing.
.
.
.
.
.
.
.

Turns out, DeOxit is not a suitable sub for freeze spray...


Mark


------------------------------------

Yahoo! Groups Links



Re: plastic binders for Tek instruction manuals

Artekmedia <manuals@...>
 

Chris

Evil Bay has lots of em ...but most office supply places carry them....the larger ones (1" to 2" or 3cm to 6cm)  are a little harder to find ...call ahead

If you know the secret ( contact me off list) they are not that hard to replace without the machine..Personally though the ones for my own use  here in the shop that get that way ...I three hole punch and put in a 3 ring binder.. Easier to take a page out when I am working in the shop

FYI
Dave
ArtekManuals

On 2/12/2013 10:01 AM, Christopher Hilton-Johnson wrote:
 

anyone have a source (either UK or US) for replacements for the (frequently brittle/broken) white plastic spiral binders used to hold the Tek instruction manuals together
My 7704A manual is now a loose collection of pages which seem deliberately to randomly re-order themselves into the most confusing order possible, seemingly done slyly & overnight!
regards
Chris HJ

-- 
Dave Henderson
Manuals@...
www.Artekmanuals.com
PO Box 175
Welch,MN 55089
651-269-4265


Re: plastic binders for Tek instruction manuals

Dave Daniel
 

Yes, I just copied an old Heathkit HW-20 manual by removing the comb and copying the manual and the fold-outs page-by-page. Re-assembling the manual took a long time because the pages were somewhat brittle and i didn't want to rip the comb holes open. It helps tremendously to line up the comb holes as perfectly as possible with some sort of took and then clamp the pages together with spring paper clamps. I probably wouldn't have had the patience to do that twenty years ago.

Any idea what the perf/assembly machines go for on the used market?

Dave

On 2/12/2013 9:13 AM, Jim Reese wrote:
 

ibico is the company that makes them here in the U.S.
 
I have a couple perforating/assembly machines and lots of plastic comb bindings. You almost need the machine to put the pages in the comb, or you have to be really patient to do it page by page!
 
Regards,
 
Jim

--- On Tue, 2/12/13, Christopher Hilton-Johnson wrote:

From: Christopher Hilton-Johnson
Subject: [TekScopes] plastic binders for Tek instruction manuals
To: TekScopes@...
Date: Tuesday, February 12, 2013, 11:01 AM



anyone have a source (either UK or US) for replacements for the (frequently brittle/broken) white plastic spiral binders used to hold the Tek instruction manuals together
My 7704A manual is now a loose collection of pages which seem deliberately to randomly re-order themselves into the most confusing order possible, seemingly done slyly & overnight!
regards
Chris HJ




Re: San Mateo 7000-series Storage Scope

Robert Simpson
 

Ok, I see Lyle is getting it.

--- In TekScopes@yahoogroups.com, "Robert" wrote:

Is somebody in the SF bay area going to pick this up? I can arrange for a relative to get it rather then have it scrapped.
Bob

--- In TekScopes@yahoogroups.com, "sipespresso" wrote:

I have no affiliation with the seller.
http://sfbay.craigslist.org/pen/ele/3611350951.html
What model is it?
-Kurt


Re: plastic binders for Tek instruction manuals

Richard Solomon <dickw1ksz@...>
 

I bought one of the mechanical perf/bind machines for short money
"over there". Shipping cost as much as the machine !! But it works
very well, up to a 2" spine.

Just look for GBC Binders.

73, Dick, W1KSZ


On Tue, Feb 12, 2013 at 9:13 AM, Jim Reese <nfeinc@...> wrote:
 

ibico is the company that makes them here in the U.S.
 
I have a couple perforating/assembly machines and lots of plastic comb bindings. You almost need the machine to put the pages in the comb, or you have to be really patient to do it page by page!
 
Regards,
 
Jim

--- On Tue, 2/12/13, Christopher Hilton-Johnson <chj@...> wrote:

From: Christopher Hilton-Johnson <chj@...>
Subject: [TekScopes] plastic binders for Tek instruction manuals
To: TekScopes@...
Date: Tuesday, February 12, 2013, 11:01 AM



anyone have a source (either UK or US) for replacements for the (frequently brittle/broken) white plastic spiral binders used to hold the Tek instruction manuals together
My 7704A manual is now a loose collection of pages which seem deliberately to randomly re-order themselves into the most confusing order possible, seemingly done slyly & overnight!
regards
Chris HJ




Re: plastic binders for Tek instruction manuals

Albert <aodiversen@...>
 

A search for " plastic binding combs 19 " (19 holes) shows this for instance:
http://www.binding.com/productdetail.aspx?id=6202021901
Albert

anyone have a source (either UK or US) for replacements for the
(frequently brittle/broken) white plastic spiral binders used to hold
the Tek instruction manuals together
My 7704A manual is now a loose collection of pages which seem
deliberately to randomly re-order themselves into the most confusing
order possible, seemingly done slyly & overnight!
regards
Chris HJ


Re: San Mateo 7000-series Storage Scope

Robert Simpson
 

Is somebody in the SF bay area going to pick this up? I can arrange for a relative to get it rather then have it scrapped.
Bob

--- In TekScopes@yahoogroups.com, "sipespresso" wrote:

I have no affiliation with the seller.
http://sfbay.craigslist.org/pen/ele/3611350951.html
What model is it?
-Kurt

97101 - 97120 of 184597