Date   
Re: Unusual TM5xx(x) MF - its not a TM500 or a TM5000

 

Hi Bob,
It would be very misleading if these unusual hybrids were referred to as TM502A, TM503A, etc.
There is a TM502A (I have two) and it is nothing but an updated version of a TM502. It is clearly marked at the front as a TM502A. There are no special wirings of either slot that would prevent any TM500 plugin from working properly. There is no additional barrier that would prevent any TM500 plugin from being used in either slot.
I don't have a TM503A (if one exists) so I can't say how that differs from a TM503 but it would have to have three fully functional slots and no additional barriers or a rewired pass transistor dedicated as a regulated power supply for the middle slot.
This unusual three wide mainframe I am describing has NO MARKINGS on it to indicate what it is. Apparently Tek avoided the question entirely of what exactly it is by not saying anything at all. I do have an AM503 that came from an AM503S stand-alone instrument that I described in my previous email. It is just an ordinary AM503 but it has THREE labels on it. The first label, which is in the usual place, is the original serial number it was given: B086364. The next label says IDENTIFICATION and it lists this plugin as AM503S. The last label is another serial number (presumably for the entire stand-alone AM 503S instrument package and it is: B013019.
Dennis Tillman W7PF

-----Original Message-----
From: bobh@...
Sent: Tuesday, April 09, 2019 5:06 AM
Subject: Re: [TekScopes] Unusual TM5xx(x) MF - its not a TM500 or a
TM5000

Aren't these referred to as TM502A, TM503A, etc? I have a TM503A and
it also does not have a fan of course since it doesn't have the space
in the bottom, as you mentioned, for air flow.

Bob.

On 4/9/2019 12:08 AM, Dennis Tillman W7PF wrote:
For several years I have been aware that there are some unusual TM
5xx(x) Main Frame power supplies floating around that look, at first
glance like a newer model TM502 or TM503 but they have GPIB
connectors
in them which only a TM5003 or TM5006 would have. In addition there
is
another distinguishing feature to help spot that this is not a
TM5003:
a TM5003 has a 1" high plenum with a grille on the front of the MF
under the three slots. This MF does not have a plenum.

The three wide MF has an additional barrier strip in the center
connector to prevent a common TM500 plugin from being inserted in
it.
The other slot(s) will accept regular TM500 plugins. I have two of
these unusual 3 wide MFs.
An easy way to distinguish them is the unusual adjustable handle
which
lets you position the MF in many different positions on a desk.

These MFs were introduced by Tek to allow some of their GPIB
equipped
TM5000 plugins to be operated as stand-alone instruments. Ones that
I
am aware of
are:

AFG 5501 (AFG 5101 in a three wide MF)
AM 503S (AM 503 and 016-0362-02 Tool Box in a two wide MF),
also known as AM 5030
DM 5520 (DM 5120 in a three wide MF)
PFG 5505 (PFG 5105 in a three wide MF)
There may be more.

I finally got around to opening one of these 3 wide units up and I
was
very surprised at what I saw. It is extremely sparse. It appears the
Tek engineers have reduced this design down to a bare minimum number
of parts.
There is a transformer (not an SMPS) and a backplane, a few wires
and
connectors, 6 pass transistors and little else.

The backplane has a part number on it and I am hoping someone can
supply a schematic for it although I don't think it is too much
different from a TM503. The backplane is marked RA-9804-00 POWER
SUPPLY (C) 1988.

There are three filter capacitors on the backplane 22,000uF/16V,
4,700uF/50V, and 4,700uF/50V. The backplane has three TM503
connectors
and three GPIB connectors and two pass transistors for each slot.

I couldn't measure the pass transistors to confirm there is a PNP
and
an NPN for each slot but that is a safe assumption. One of the pass
transistors for the middle slot appears to be connected to a 9V
Zener
Diode which appears to force it to be a simple 10V regulator. That
is
probably why there is a barrier strip in the middle slot between
positions 27 and 28. I did not see any reason the back plane
couldn't
be modified to remove the simple regulator and rewire the pass
transistor to be like any other TM503.
Dennis Tillman W7PF



--
Dennis Tillman W7PF
TekScopes Moderator

Re: Unusual TM5xx(x) MF - its not a TM500 or a TM5000

 

Hi Hawker,
How do you know the TM504A was designed for audio work??? This is the first I heard of this special adaptation. Is this an option listed in the catalogs? Does it say that in the service manual somewhere?I also have a newer TM500 MF. Mine is a 6 slot MF. It looks exactly like a TM5006 on the front due to the color scheme and the plenum below the MF. It says TM506A in exactly the same place the TM5006 label would be. I thought I was buying a TM5006 until I got it home and noticed there were no GPIB connectors. Even now with the TM506A in a stack of three TM5006s I can't tell which one is the TM506A unless I look carefully at the label on the front.
The TM500 and TM5000 MF fans are a source of numerous noise complaints. About 1/4 of my TM mainframes have fans that cause me to grit my teeth when I turn them on. But when I think about the hassle of replacing them I quickly chose to accept the noise because if I was going to replace one of then I would probably choose to replace them all. I have 15 TM506 or TM5006 so that would be way too much work.
Dennis Tillman W7PF

-----Original Message-----
From: Hawker
Sent: Tuesday, April 09, 2019 10:21 AM
Subject: Re: [TekScopes] Unusual TM5xx(x) MF - its not a TM500 or a
TM5000

I wonder if that is different than the A series?
I have a TM504A. AFAIK the 504A is a 504 beefed up (bigger caps and
pass transistors) and fan specifically designed for the audio
distortion analyzer and signal generator plug ins. It has a fan but
does not have the lower venting.of the TM5000x series. It also does
not have GPIB as the OP mentioned. It is not a 5000x series but a 500
series main frame. It does look more modern than a TM504 but not as
modern as a 5000 series or as tall.

The funny thing about the TM504A is, although it was designed for
Audio plug ins, the fan is so crazy noisy I can't stand to use it. I
did replace it with a lower noise fan, with the same air flow, but it
is still really noisy and I can't stand to use it unless I have to due
to this.


--
Dennis Tillman W7PF
TekScopes Moderator

Re: Unusual TM5xx(x) MF - its not a TM500 or a TM5000

Chuck Harris
 

I do have a TM503A, and it is pretty close to the
TM503 in design, only simpler.

Switch is on the back panel,
IEC power connector,
No side handle,
Round spool type feet on the back for winding the cord.
No 50 pin D style connector on the back

My 503A spends all of its time on a shelf, not being used
in preference for the front power switch 503's.

-Chuck Harris

Dennis Tillman W7PF wrote:

Hi Bob,
It would be very misleading if these unusual hybrids were referred to as TM502A, TM503A, etc.
There is a TM502A (I have two) and it is nothing but an updated version of a TM502. It is clearly marked at the front as a TM502A. There are no special wirings of either slot that would prevent any TM500 plugin from working properly. There is no additional barrier that would prevent any TM500 plugin from being used in either slot.
I don't have a TM503A (if one exists) so I can't say how that differs from a TM503 but it would have to have three fully functional slots and no additional barriers or a rewired pass transistor dedicated as a regulated power supply for the middle slot.
This unusual three wide mainframe I am describing has NO MARKINGS on it to indicate what it is. Apparently Tek avoided the question entirely of what exactly it is by not saying anything at all. I do have an AM503 that came from an AM503S stand-alone instrument that I described in my previous email. It is just an ordinary AM503 but it has THREE labels on it. The first label, which is in the usual place, is the original serial number it was given: B086364. The next label says IDENTIFICATION and it lists this plugin as AM503S. The last label is another serial number (presumably for the entire stand-alone AM 503S instrument package and it is: B013019.
Dennis Tillman W7PF

Re: Need any kind of Tek 224 portable Manual

hog_lifer@...
 

Search online there's a couple of sites that you can download a PDF manual

2465B scopes For Sale

 

I’ve got 2 2465B scope that I’d like to sell. All have serial #’s greater than B06XXXX. I have recapped the power supplies with premium Panasonic and Nichicon electrolytics. I’ve also replace the high failure rate film capacitors. The A5 boards have had their electrolytic caps replaced (no trace damage). Also a new socketed NVRAM has been installed and the contents from the old NVRAM reloaded. Very good overall cosmetics and they are fully functional. (no guarantee of calibration). Come with original operators manuals, top pouch, and original power cord. $500 each plus actual shipping cost (US shipment only). I will also offer buyers P6137 400 MHz probes for $75 each. I also have 1 P6139 probe for $65. Can also arrange for pickup in Tampa FL or can meet within a reasonable distance. If you want a new calibration I can have shipped to a member of this group in Maryland that can handle that for you. Please message my directly if interested.

Re: 475A + DM44 refuses to power on

 

This may be a help.

https://lazyelectrons.wordpress.com/2018/02/18/tektronix-475a-dm44-repair/

and this

http://w140.com/tek_475a_schematics.pdf

Take a close look at the -8 volt distribution. It is used for both the H & V sections as well as the beam finder.

Check the switch on the beam finder.

Regards,

Tom

On 4/9/2019 10:50 AM, Alberto I2PHD wrote:
On 2019-04-09 14:59, John Kolb wrote:
Looks like what happens when the Beam Finder switch is pressed.  Stuck
switch?
No, I checked, and the Beam Finder does its duty when pressed... and the fact that the vertical position controls are unable to bring the trace outside the visible screen suggests that something is wrong with the deflection voltages...

Time for an inventory or size really does matter

John Williams
 

Ok I don’t really believe in this sort of thing, but I will try to put together a list of what is in my collection. I have enjoyed what others have said about their collection and I have to admire their restraint (disregarding Stan lol).

2236
422 with both power supplies
504 (3)
503 (3)
515A
555 (3)
551 (3)
549
535A (2)
556 (2)
647A
536
581
RM31A
RM15
529
531A
317 (2)
310A (2)
RM503
RM504
502
502A (2)
2465A
321
321A (4)
321 and 321A for parts (3)
2 cases, 5 ac power cords
1 DC power cord
475 DM
2213
Most plugins for all the scopes
191 sine generator
119 square wave generator
154 Time Marker Generator
067-0508-00 Calibration Fixture
132 Plug-in Unit Power Supply
TU-2 Test Load Plug-in Unit (2)
067-0521-01 Calibration Fixture
575 Transistor Curve Tracer parts only

Lots of spare parts, tubes, crt’s and power transformers

Pictures of scopes at https://photos.app.goo.gl/vWHUhwHc74o7ed7Q9

Re: Free equipment, Los Angeles area

Renée
 

Hi John-
are any of the following available: 2335, 422, 454A, DM501A, FG503
Thanks
Renée

On 2019-04-04 10:50 p.m., johncharlesgord via Groups.Io wrote:
List updated
Here is a list of test equipment that should really get back into circulation. Pickup only; I live in Venice, CA, a neighborhood of Los Angeles.
(There is some very nice stuff here.)
I don't care if you use it, sell it, or give it away! I just want to get the equipment into circulation instead of letting my kids send it to a landfill someday.
I am cross posting this to Tek, HP, and general test equipment lists.

Contact me by email to arrange pickup.
--John Gord email: johngord (at) verizon (dot) net

Items marked with "*" are known not to work
other items worked when stored away

Items marked with "*" are known not to work
other items worked when stored away

Tektronix
2335 Tek analog scope
2445B Tek (no U800, bad PS)
321A Tek analog scope
422 Tek analog scope
454A Tek analog scope
7D15 Tek scope plug in
7D15 Tek scope plugin
DM501A Tek TM500 plugin
FG501A Tek TM500 plugin
FG503 Tek TM500 plugin
SC502 Tek (no crt)*
TM503 Tek TM500 mainframe

HP/Agilent
204D Oscillator
3466A 4.5 digit DVM
3478A 5.5 digit DVM
435A Power meter
435B Power meter
435B Power meter* bad Ref output

Misc
616 Keithley digital electrometer*

8050A Fluke DVM

9500 Racal-Dana Frequency counter*


Re: Unusual TM5xx(x) MF - its not a TM500 or a TM5000

J Mcvein
 

I had a 3-slot special built for a optical fiber test set thattek built. (OPC-nnn)?  The center slot was wired different.  I
had to cut some traces and add a pass transistor.  The raw 11Vwas regulated to 9V.  None of the regular TM-500's seemed to mindthe 9V, but if you removed the key and put one in the center slot,it would smoke if the backplane was not modified.
To fit TM-5000's, I had to mill slots in the outer housing to
accept the keys on top of the modules.There was not a model ID where one would usually go on the topof the housing.
JimMc

On Tuesday, April 9, 2019, 1:14:01 PM PDT, Dennis Tillman W7PF <@Dennis_Tillman_W7PF> wrote:

Hi Bob,
It would be very misleading if these unusual hybrids were referred to as TM502A, TM503A, etc.
There is a TM502A (I have two) and it is nothing but an updated version of a TM502. It is clearly marked at the front as a TM502A. There are no special wirings of either slot that would prevent any TM500 plugin from working properly. There is no additional barrier that would prevent any TM500 plugin from being used in either slot.
I don't have a TM503A (if one exists) so I can't say how that differs from a TM503 but it would have to have three fully functional slots and no additional barriers or a rewired pass transistor dedicated as a regulated power supply for the middle slot.
This unusual three wide mainframe I am describing has NO MARKINGS on it to indicate what it is. Apparently Tek avoided the question entirely of what exactly it is by not saying anything at all. I do have an AM503 that came from an AM503S stand-alone instrument that I described in my previous email. It is just an ordinary AM503 but it has THREE labels on it. The first label, which is in the usual place, is the original serial number it was given: B086364. The next label says IDENTIFICATION and it lists this plugin as AM503S. The last label is another serial number (presumably for the entire stand-alone AM 503S instrument package and it is: B013019.
Dennis Tillman W7PF

-----Original Message-----
From: bobh@...
Sent: Tuesday, April 09, 2019 5:06 AM
Subject: Re: [TekScopes] Unusual TM5xx(x) MF - its not a TM500 or a
TM5000

Aren't these referred to as TM502A, TM503A, etc?  I have a TM503A and
it also does not have a fan of course since it doesn't have the space
in the bottom, as you mentioned, for air flow.

Bob.

On 4/9/2019 12:08 AM, Dennis Tillman W7PF wrote:
For several years I have been aware that there are some unusual TM
5xx(x) Main Frame power supplies floating around that look, at first
glance like a newer model TM502 or TM503 but they have GPIB
connectors
in them which only a TM5003 or TM5006 would have. In addition there
is
another distinguishing feature to help spot that this is not a
TM5003:
a TM5003 has a 1" high plenum with a grille on the front of the MF
under the three slots. This MF does not have a plenum.

The three wide MF has an additional barrier strip in the center
connector to prevent a common TM500 plugin from being inserted in
it.
The other slot(s) will accept regular TM500 plugins. I have two of
these unusual 3 wide MFs.
An easy way to distinguish them is the unusual adjustable handle
which
lets you position the MF in many different positions on a desk.

These MFs were introduced by Tek to allow some of their GPIB
equipped
TM5000 plugins to be operated as stand-alone instruments. Ones that
I
am aware of
are:

AFG 5501 (AFG 5101 in a three wide MF)
AM 503S (AM 503 and 016-0362-02 Tool Box in a two wide MF),
also known as AM 5030
DM 5520 (DM 5120 in a three wide MF)
PFG 5505 (PFG 5105 in a three wide MF)
There may be more.

I finally got around to opening one of these 3 wide units up and I
was
very surprised at what I saw. It is extremely sparse. It appears the
Tek engineers have reduced this design down to a bare minimum number
of parts.
There is a transformer (not an SMPS) and a backplane, a few wires
and
connectors, 6 pass transistors and little else.

The backplane has a part number on it and I am hoping someone can
supply a schematic for it although I don't think it is too much
different from a TM503. The backplane is marked RA-9804-00 POWER
SUPPLY (C) 1988.

There are three filter capacitors on the backplane 22,000uF/16V,
4,700uF/50V, and 4,700uF/50V. The backplane has three TM503
connectors
and three GPIB connectors and two pass transistors for each slot.

I couldn't measure the pass transistors to confirm there is a PNP
and
an NPN for each slot but that is a safe assumption. One of the pass
transistors for the middle slot appears to be connected to a 9V
Zener
Diode which appears to force it to be a simple 10V regulator. That
is
probably why there is a barrier strip in the middle slot between
positions 27 and 28. I did not see any reason the back plane
couldn't
be modified to remove the simple regulator and rewire the pass
transistor to be like any other TM503.
Dennis Tillman W7PF



--
Dennis Tillman W7PF
TekScopes Moderator

Re: Time for an inventory or size really does matter

Brendan
 

Are you an ex Tektronix employee? I have never even seen a working 5XX series scope except on the internet. One day I will have one though. This hobby is very addicting (at least for me). I would like to add a 475, 2467B, 2440 and some others. Sometimes I wonder what the heck I'm doing but then I think of all the things I've learned and it makes me feel better. I spend hours weekly reading old posts from this forum and I am constantly amazed by the brain horsepower that members here have. I have zero education or formal training (I'm an ex police officer) so a lot of times I'm just guessing but as the years go by my guesses are getting slightly better. To me it seems the "regulars" here know these scopes and their circuitry inside and out. I can follow a schematic, sort of, but most here understand the schematic which is a whole nother level. Thanks for sharing you gear.

Brendan

On Tue, Apr 9, 2019 at 02:53 PM, John Williams wrote:


Ok I don’t really believe in this sort of thing, but I will try to put
together a list of what is in my collection. I have enjoyed what others have
said about their collection and I have to admire their restraint (disregarding
Stan lol).

2236
422 with both power supplies
504 (3)
503 (3)
515A
555 (3)
551 (3)
549
535A (2)
556 (2)
647A
536
581
RM31A
RM15
529
531A
317 (2)
310A (2)
RM503
RM504
502
502A (2)
2465A
321
321A (4)
321 and 321A for parts (3)
2 cases, 5 ac power cords
1 DC power cord
475 DM
2213
Most plugins for all the scopes
191 sine generator
119 square wave generator
154 Time Marker Generator
067-0508-00 Calibration Fixture
132 Plug-in Unit Power Supply
TU-2 Test Load Plug-in Unit (2)
067-0521-01 Calibration Fixture
575 Transistor Curve Tracer parts only

Lots of spare parts, tubes, crt’s and power transformers

Pictures of scopes at https://photos.app.goo.gl/vWHUhwHc74o7ed7Q9

Re: Unusual TM5xx(x) MF - its not a TM500 or a TM5000

John Mullens
 

All,
I've had several of these from various acquisitions. One of them - a -B - apparently supports any plugin in any slot. The others were keyed or had block-off plates installed so they could be used only with their accompanying plugin. This one also has full GPIB support in all slots.

...John...

Re: Time for an inventory or size really does matter

John Williams
 

Thanks for your kind comments Brendan. No, I was not a Tektronix employee. I wanted to be but then I met a girl ... and so on. I really like the engineering that went into these oscilloscopes and also the ease of restoration and repair. I think the best way to get an instrument this old is through a local gift or purchase. The auction site epay is no longer a safe source in my opinion. Between ignorant and/or unscrupulous sellers and to-hell-with attitudes of shipping companies it is really hard to get something to arrive that works. Keep your eye out locally is my advice.

Re: Free equipment, Los Angeles area

caetano silva
 

Hi John,I was very sad to be in Brazil, post really would have much interest in having an HP435B Unit



Em terça-feira, 9 de abril de 2019 19:11:22 BRT, Renée <@rjdeeter> escreveu:

Hi John-
are any of the following available: 2335, 422, 454A, DM501A, FG503
Thanks
Renée

On 2019-04-04 10:50 p.m., johncharlesgord via Groups.Io wrote:
List updated
Here is a list of test equipment that should really get back into circulation.  Pickup only; I live in Venice, CA, a neighborhood of Los Angeles.
(There is some very nice stuff here.)
I don't care if you use it, sell it, or give it away!  I just want to get the equipment into circulation instead of letting my kids send it to a landfill someday.
I am cross posting this to Tek, HP, and general test equipment lists.

Contact me by email to arrange pickup.
--John Gord      email:  johngord (at) verizon (dot) net

Items marked with "*" are known not to work
    other items worked when stored away

Items marked with "*" are known not to work
    other items worked when stored away

Tektronix
2335 Tek analog scope
2445B Tek (no U800, bad PS)
321A Tek analog scope
422 Tek analog scope
454A Tek analog scope
7D15 Tek scope plug in
7D15 Tek scope plugin
DM501A Tek TM500 plugin
FG501A Tek TM500 plugin
FG503 Tek TM500 plugin
SC502 Tek (no crt)*
TM503 Tek TM500 mainframe

HP/Agilent
204D Oscillator
3466A 4.5 digit DVM
3478A 5.5 digit DVM
435A Power meter
435B Power meter
435B Power meter* bad Ref output

Misc
616 Keithley digital electrometer*

8050A Fluke DVM

9500 Racal-Dana Frequency counter*



Re: Free equipment, Los Angeles area

caetano silva
 

maybe if someone was willing to send me to Brazil I would pay the costs "HP435B"
Em terça-feira, 9 de abril de 2019 23:45:31 BRT, caetano silva via Groups.Io <caetch2001=yahoo.com.br@groups.io> escreveu:

Hi John,I was very sad to be in Brazil, post really would have much interest in having an HP435B Unit



    Em terça-feira, 9 de abril de 2019 19:11:22 BRT, Renée <@rjdeeter> escreveu:

Hi John-
are any of the following available: 2335, 422, 454A, DM501A, FG503
Thanks
Renée

On 2019-04-04 10:50 p.m., johncharlesgord via Groups.Io wrote:
List updated
Here is a list of test equipment that should really get back into circulation.  Pickup only; I live in Venice, CA, a neighborhood of Los Angeles.
(There is some very nice stuff here.)
I don't care if you use it, sell it, or give it away!  I just want to get the equipment into circulation instead of letting my kids send it to a landfill someday.
I am cross posting this to Tek, HP, and general test equipment lists.

Contact me by email to arrange pickup.
--John Gord      email:  johngord (at) verizon (dot) net

Items marked with "*" are known not to work
    other items worked when stored away

Items marked with "*" are known not to work
    other items worked when stored away

Tektronix
2335 Tek analog scope
2445B Tek (no U800, bad PS)
321A Tek analog scope
422 Tek analog scope
454A Tek analog scope
7D15 Tek scope plug in
7D15 Tek scope plugin
DM501A Tek TM500 plugin
FG501A Tek TM500 plugin
FG503 Tek TM500 plugin
SC502 Tek (no crt)*
TM503 Tek TM500 mainframe

HP/Agilent
204D Oscillator
3466A 4.5 digit DVM
3478A 5.5 digit DVM
435A Power meter
435B Power meter
435B Power meter* bad Ref output

Misc
616 Keithley digital electrometer*

8050A Fluke DVM

9500 Racal-Dana Frequency counter*



Re: TekScopes - Digest #1192

dnmeeks
 

Hello -
I am out on business travel Sunday through Friday (4/7 through 4/12) this
week. Replies may be delayed.
Sorry for the inconvenience.
Best regards
Dan

Re: Free equipment, Los Angeles area

johncharlesgord
 

All of the items on the list are gone or spoken for.
I hope they are enjoyed!
--John

Re: Time for an inventory or size really does matter

Dave Seiter
 

I agree; however, it's also a testament to how well build these scopes were.  About 2010 I bought a rack mount 502, and it arrived from the east coast in a box with almost no padding at all.  I feared the worst, but nothing was bent and it worked fine.  It took only a few tweaks to calibrate it.  Of course, it also could have looked like it was the ball in a soccer match between USPS and UPS, so maybe I was lucky!
-Dave
------------------Between ignorant and/or unscrupulous sellers and to-hell-with attitudes of shipping companies it is really hard to get something to arrive that works. Keep your eye out locally is my advice.

Re: Time for an inventory or size really does matter

Craig Sawyers
 

Ok I don?t really believe in this sort of thing, but I will try to put together a list of what is in
my
collection. I have enjoyed what others have said about their collection and I have to admire their
restraint (disregarding Stan lol).
Oh dear. I do keep an inventory. There is a master list that contains all my Tek, HP, Fluke and
General Radio stuff. But this is the edited list of Tek gear. There are multiple copies of quite a
number of these.

Mainframes
7904
7904A
7834
7844
7104
7313
7623B
7633
7603
7704A
7854
7403N
7912HB
7934

Timebases
7B10
7B15
7B53A
7B70
7B71
7B80
7B85
7B87
7B90P
7B92A

Digital
7D11
7D01/DF1
7D15

Amplifiers
7A11
7A12
7A13
7A16P
7A18
7A19
7A21N
7A22
7A24
7A26
7A29
7A29P

Spectrum analysers
7L5 with tracking generator
2701
7L12
TR502

Sampling
7T11
7S11
7S12
S4
S6
S2
S1
S52
S53
S3A
7M11
012-0124-00

TM500 series
AA501
SG505
PG506
SG503
TM501
TM503
TM504
TM506
DC503A
PG502
TG501

Other
634 video monitor
620 x-y monitor
7M13 readout unit
7CT1N semiconductor curve tracer
C1002 digital oscilloscope camera

Tektronix signal sources and calibration fixtures
Type 111
Type 110
067-0513-00
Type 106
Type 114
Type 130
S30
Type 190B
Type 191
Type 184
Type 284
Type 285
067-0502-01
067-0503-00
067-0508-00
067-0529-00
067-0562-00
067-0587-01
067-0587-02
067-0589-00
067-0608-00
067-0616-00
067-650-00
067-0652-00
067-0710-00
067-0875-00

3. Other Tektronix
545A and 545B
547
585A
564
575
575 mod 122C
175
577D2
576
Type 1L5
015-0107-00
Type 1L10
Type 1L20
Type N
Type 1S1
Type 1S2
Type L
Type D
Type CA
Type Z
Type 1A4
Type Z
3A6
3B3
Type 82
Type 81
475/DM44
453
A6901
A6902B
1052

4. Probes
P6201
P6202A
P6032
P6201
P6013A
P6105
P6046
P6016
P6075A
P6101A
Matched pairs P6055
10x/1x switchable probes (150MHz) 2 off
P6054A
P6056
P6057

Re: Output buffer for 7000 series scopes.

magnustoelle
 

Good Day Gudjon,

It might sound arrogant, but I have no ill intentions when I say that you might want to build your own custom plug-in?

We have the "Signal Out +/-" present at contacts A11 & B11 of the interface connector of every 7000-series plug-in, and "Trigger Out+/-" at A13 & B13 for the 7AXYZ amplifiers.
Dual polarity supplies of +/- 50V, +/-15V and +5V DC are also readily available; so throw in some modern OpAmps with some basic lead-lag compensation and have fun!

Cheers,

Magnus

Hi Dennis

Thanks for the answer.
Hi Gudjon,
Tek may have already saved you the trouble. On the back of every 7000 scope are a set of 6 BNC connectors. One of them is labeled VERT SIG OUT. It should be the Vertical Signal Out you are looking for.

If not, you should be able to study the schematic for that section of your 7000 scope to see how it is done so you can make additional modifications to accomplish what you are looking for.
I know about the vertical readout at the back but it is not 50 Ohm,
has very poor frequency response and I would like to have two of them.
Preferably 4 when using the 7A26
but two with full frequency response will be fantastic.

Regards
Gudjon

Re: Free equipment, Los Angeles area

 

In the original post by John he made it clear you should contact him OFF LIST if you were interested in any of this equipment. He provided his address in his post so you could do this.

SO WHY ARE MEMBERS POSTING THEIR REQUESTS TO TEKSCOPES INSTEAD OF CONTACTING HIM DIRECTLY?
Dennis Tillman W7PF

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of
caetano silva via Groups.Io
Sent: Tuesday, April 09, 2019 7:45 PM
To: TekScopes@groups.io
Subject: Re: [TekScopes] Free equipment, Los Angeles area

Hi John,I was very sad to be in Brazil, post really would have much
interest in having an HP435B Unit



Em terça-feira, 9 de abril de 2019 19:11:22 BRT, Renée
<@rjdeeter> escreveu:

Hi John-
are any of the following available: 2335, 422, 454A, DM501A, FG503
Thanks Renée

On 2019-04-04 10:50 p.m., johncharlesgord via Groups.Io wrote:
List updated
Here is a list of test equipment that should really get back into
circulation. Pickup only; I live in Venice, CA, a neighborhood of Los
Angeles.
(There is some very nice stuff here.)
I don't care if you use it, sell it, or give it away! I just want
to get the equipment into circulation instead of letting my kids send
it to a landfill someday.
I am cross posting this to Tek, HP, and general test equipment
lists.

Contact me by email to arrange pickup.
--John Gord email: johngord (at) verizon (dot) net

Items marked with "*" are known not to work
other items worked when stored away

Items marked with "*" are known not to work
other items worked when stored away

Tektronix
2335 Tek analog scope
2445B Tek (no U800, bad PS)
321A Tek analog scope
422 Tek analog scope
454A Tek analog scope
7D15 Tek scope plug in
7D15 Tek scope plugin
DM501A Tek TM500 plugin
FG501A Tek TM500 plugin
FG503 Tek TM500 plugin
SC502 Tek (no crt)*
TM503 Tek TM500 mainframe

HP/Agilent
204D Oscillator
3466A 4.5 digit DVM
3478A 5.5 digit DVM
435A Power meter
435B Power meter
435B Power meter* bad Ref output

Misc
616 Keithley digital electrometer*

8050A Fluke DVM

9500 Racal-Dana Frequency counter*









--
Dennis Tillman W7PF
TekScopes Moderator