Topics

Looking for TM503B manual


Jared Cabot
 

I'm poking away at my TM503B and wondering if anyone has a manual for this mainframe?
I've found the TM503 manual, but no B version yet.

Failing that, does anyone know how to set the line voltage, and what Option 2 is?


Thanks!


JoeKoch
 

Hi,
Voltage selector is on the back site above the power switch. Pull it out and rotate it to the correct voltage.
Option 2 is the rear interface, 3 BNC Connectors, 50 pin Sub D connector on the back site and internal pins.

Joe



-----Ursprüngliche Nachricht-----
Von: TekScopes@groups.io [mailto:TekScopes@groups.io] Im Auftrag von Jared Cabot via groups.io
Gesendet: Sonntag, 20. September 2020 11:50
An: TekScopes@groups.io
Betreff: [TekScopes] Looking for TM503B manual

I'm poking away at my TM503B and wondering if anyone has a manual for this mainframe?
I've found the TM503 manual, but no B version yet.

Failing that, does anyone know how to set the line voltage, and what Option 2 is?


Thanks!


Jared Cabot
 

Ah ha, I guess I'm going blind, I was looking inside for jumpers and completely missed the selector on the rear power switch. :D

Re. Option 2, my unit has the sticker, but no signs at all of any option ever being installed besides one BNC blanking plug missing, but that doesn't necessarily mean much...
Maybe I'll go get a few plugs and jacks and install the option myself one day when I get bored.


Thanks!
Jared.

On Sun, Sep 20, 2020 at 07:26 PM, JoeKoch wrote:


Hi,
Voltage selector is on the back site above the power switch. Pull it out and
rotate it to the correct voltage.
Option 2 is the rear interface, 3 BNC Connectors, 50 pin Sub D connector on
the back site and internal pins.

Joe



-----Ursprüngliche Nachricht-----
Von: TekScopes@groups.io [mailto:TekScopes@groups.io] Im Auftrag von Jared
Cabot via groups.io
Gesendet: Sonntag, 20. September 2020 11:50
An: TekScopes@groups.io
Betreff: [TekScopes] Looking for TM503B manual

I'm poking away at my TM503B and wondering if anyone has a manual for this
mainframe?
I've found the TM503 manual, but no B version yet.

Failing that, does anyone know how to set the line voltage, and what Option 2
is?


Thanks!


 

Hi Jared,
Congratulations on finding a TM503B. "B" versions of a product are uncommon for Tek to make. They are an indication that the product sold very well. Tek was also convinced it would continue to sell well. There were two main reasons to create a "B" version of a product.
1) To update it to meet current market requirements such as new electrical standards, safety standards, international environmental standards (such as being free of lead or mercury), energy efficiency goals, etc.
2) To reduce manufacturing costs, reduce parts count, reduce assembly time, improve product performance, improve product reliability, reduce the total cost of ownership for the customer, etc.

I have seen enough different TM503s that I am certain Tek made many versions of the TM503. I posted a 4 page paper on a TM503 that I came across that had every indication of being a very late model TM503 judging from how simplified Tek's production engineers redesigned it for quick assembly and low manufacturing cost.

This particular TM503 was unusual for many reasons:
* There were no markings on indicating what it was but you could tell immediately that it was a TM503 by looking at it.
* It had GPIB connectors for each slot like a TM5003 would have.
* The power supply was a conventional transformer and filter caps analog design, and not a switching power supply like the TM5003 has.
* It produced higher TM5xx DC voltages than the TM5003 and TM5006. TM500x voltages are lower than the TM5xx unregulated voltages because TM500x voltages are regulated by the switching supply they use.

You may find something that applies to your TM503B in the unusual TM503 I found and modified. It is at:
https://groups.io/g/TekScopes/files/Modification%20of%20an%20Unusual%20Three%20Wide%20TM%20Mainframe%20into%20an%20ordinary%20TM503/Unusual%20Three%20Wide%20TM%20Mainframe.pdf.
You may have to paste that link back together to use it.
Alternatively you can simply do a search for
Unusual TM503
in the TekScopes files section and find it that way.
Dennis Tillman W7pF

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of Jared Cabot via groups.io
Sent: Sunday, September 20, 2020 5:07 AM
To: TekScopes@groups.io
Subject: Re: [TekScopes] Looking for TM503B manual

Ah ha, I guess I'm going blind, I was looking inside for jumpers and completely missed the selector on the rear power switch. :D

Re. Option 2, my unit has the sticker, but no signs at all of any option ever being installed besides one BNC blanking plug missing, but that doesn't necessarily mean much...
Maybe I'll go get a few plugs and jacks and install the option myself one day when I get bored.


Thanks!
Jared.


On Sun, Sep 20, 2020 at 07:26 PM, JoeKoch wrote:


Hi,
Voltage selector is on the back site above the power switch. Pull it
out and rotate it to the correct voltage.
Option 2 is the rear interface, 3 BNC Connectors, 50 pin Sub D
connector on the back site and internal pins.

Joe



-----Ursprüngliche Nachricht-----
Von: TekScopes@groups.io [mailto:TekScopes@groups.io] Im Auftrag von
Jared Cabot via groups.io
Gesendet: Sonntag, 20. September 2020 11:50
An: TekScopes@groups.io
Betreff: [TekScopes] Looking for TM503B manual

I'm poking away at my TM503B and wondering if anyone has a manual for
this mainframe?
I've found the TM503 manual, but no B version yet.

Failing that, does anyone know how to set the line voltage, and what
Option 2 is?


Thanks!






--
Dennis Tillman W7pF
TekScopes Moderator


Jim Ford
 

I find it interesting that the first version of a Tek model had no letter after it, while the first version of an HP model always had an "A", which would be the second version of a Tek scope or other piece.  Makes things confusing for those of us with large quantities of both Tek and HP gear. Jim Ford Sent from my Verizon, Samsung Galaxy smartphone

-------- Original message --------From: Dennis Tillman W7pF <@Dennis_Tillman_W7pF> Date: 9/20/20 2:24 PM (GMT-08:00) To: TekScopes@groups.io Subject: Re: [TekScopes] Looking for TM503B manual Hi Jared,Congratulations on finding a TM503B. "B" versions of a product are uncommon for Tek to make. They are an indication that the product sold very well. Tek was also convinced it would continue to sell well. There were two main reasons to create a "B" version of a product. 1) To update it to meet current market requirements such as new electrical standards, safety standards, international environmental standards (such as being free of lead or mercury), energy efficiency goals, etc.2) To reduce manufacturing costs, reduce parts count, reduce assembly time, improve product performance, improve product reliability, reduce the total cost of ownership for the customer, etc.I have seen enough different TM503s that I am certain Tek made many versions of the TM503. I posted a 4 page paper on a TM503 that I came across that had every indication of being a very late model TM503 judging from how simplified Tek's production engineers redesigned it for quick assembly and low manufacturing cost. This particular TM503 was unusual for many reasons: * There were no markings on indicating what it was but you could tell immediately that it was a TM503 by looking at it. * It had GPIB connectors for each slot like a TM5003 would have.* The power supply was a conventional transformer and filter caps analog design, and not a switching power supply like the TM5003 has.* It produced higher TM5xx DC voltages than the TM5003 and TM5006.  TM500x voltages are lower than the TM5xx unregulated voltages because TM500x voltages are regulated by the switching supply they use.You may find something that applies to your TM503B in the unusual TM503 I found and modified. It is at: https://groups.io/g/TekScopes/files/Modification%20of%20an%20Unusual%20Three%20Wide%20TM%20Mainframe%20into%20an%20ordinary%20TM503/Unusual%20Three%20Wide%20TM%20Mainframe.pdf.You may have to paste that link back together to use it. Alternatively you can simply do a search for Unusual TM503in the TekScopes files section and find it that way.Dennis Tillman W7pF-----Original Message-----From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of Jared Cabot via groups.ioSent: Sunday, September 20, 2020 5:07 AMTo: TekScopes@...: Re: [TekScopes] Looking for TM503B manualAh ha, I guess I'm going blind, I was looking inside for jumpers and completely missed the selector on the rear power switch. :DRe. Option 2, my unit has the sticker, but no signs at all of any option ever being installed besides one BNC blanking plug missing, but that doesn't necessarily mean much...Maybe I'll go get a few plugs and jacks and install the option myself one day when I get bored.Thanks!Jared.On Sun, Sep 20, 2020 at 07:26 PM, JoeKoch wrote:>> Hi,> Voltage selector is on the back site above the power switch. Pull it > out and rotate it to the correct voltage.> Option 2 is the rear interface, 3 BNC Connectors, 50 pin Sub D > connector on the back site and internal pins.> > Joe> > > > -----Ursprüngliche Nachricht-----> Von: TekScopes@groups.io [mailto:TekScopes@groups.io] Im Auftrag von > Jared Cabot via groups.io> Gesendet: Sonntag, 20. September 2020 11:50> An: TekScopes@groups.io> Betreff: [TekScopes] Looking for TM503B manual> > I'm poking away at my TM503B and wondering if anyone has a manual for > this mainframe?> I've found the TM503 manual, but no B version yet.> > Failing that, does anyone know how to set the line voltage, and what > Option 2 is?> > > Thanks!-- Dennis Tillman W7pFTekScopes Moderator


 

On Sun, Sep 20, 2020 at 11:52 PM, Jim Ford wrote:


I find it interesting that the first version of a Tek model had no letter
after it, while the first version of an HP model always had an "A"
Model numbers with a letter following the model make life a lot easier when looking up an instrument on the Internet. Take 465 vs 465B, 2265 vs 2465A.

Raymond


Gregor Lasser
 

Hi Jared,

To change the line voltage on the TM503B simply pop out the bright grey plastic piece that is part of the line selector/power switch/power connector assembly on the back. (The piece that shows 240 (V) in the little window on the left side)
http://w140.com/tekwiki/wiki/TM503#/media/File:Tek_tm503b_pwr_supply_rear.jpg

Greetings,
Gregor

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of Jared Cabot via groups.io
Sent: Sunday, September 20, 2020 3:50 AM
To: TekScopes@groups.io
Subject: [TekScopes] Looking for TM503B manual

I'm poking away at my TM503B and wondering if anyone has a manual for this mainframe?
I've found the TM503 manual, but no B version yet.

Failing that, does anyone know how to set the line voltage, and what Option 2 is?


Thanks!


Jared Cabot
 

Thanks for the info!
I've seen a couple versions of the TM503 too, even what looked like a TM5003 of sorts with no markings or real part number, it appeared to be a part of a 'pre-built' unit that was never designed to be used with normal TM modules.
It may have been the same as the one you played with in your link..

Jared.

On Mon, Sep 21, 2020 at 06:24 AM, Dennis Tillman W7pF wrote:


Hi Jared,
Congratulations on finding a TM503B. "B" versions of a product are uncommon
for Tek to make. They are an indication that the product sold very well. Tek
was also convinced it would continue to sell well. There were two main reasons
to create a "B" version of a product.
1) To update it to meet current market requirements such as new electrical
standards, safety standards, international environmental standards (such as
being free of lead or mercury), energy efficiency goals, etc.
2) To reduce manufacturing costs, reduce parts count, reduce assembly time,
improve product performance, improve product reliability, reduce the total
cost of ownership for the customer, etc.

I have seen enough different TM503s that I am certain Tek made many versions
of the TM503. I posted a 4 page paper on a TM503 that I came across that had
every indication of being a very late model TM503 judging from how simplified
Tek's production engineers redesigned it for quick assembly and low
manufacturing cost.

This particular TM503 was unusual for many reasons:
* There were no markings on indicating what it was but you could tell
immediately that it was a TM503 by looking at it.
* It had GPIB connectors for each slot like a TM5003 would have.
* The power supply was a conventional transformer and filter caps analog
design, and not a switching power supply like the TM5003 has.
* It produced higher TM5xx DC voltages than the TM5003 and TM5006. TM500x
voltages are lower than the TM5xx unregulated voltages because TM500x voltages
are regulated by the switching supply they use.

You may find something that applies to your TM503B in the unusual TM503 I
found and modified. It is at:

https://groups.io/g/TekScopes/files/Modification%20of%20an%20Unusual%20Three%20Wide%20TM%20Mainframe%20into%20an%20ordinary%20TM503/Unusual%20Three%20Wide%20TM%20Mainframe.pdf.
You may have to paste that link back together to use it.
Alternatively you can simply do a search for
Unusual TM503
in the TekScopes files section and find it that way.
Dennis Tillman W7pF