Date   

Re: Curve tracer plug-in for 500 series.-

 

Hi Sebasstian,
It would be easier to read my comments on the 7CT1N and 5CT1N in the paper I
wrote on my Vacuum Tube Curve Tracer adapter board.
< http://www.ke5fx.com/A_VTCT_Adapter_for_All_Tektronix_SCTs_W7PF.pdf>

Dennis Tillman W7PF

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of
Sebastian Garcia
Sent: Monday, February 12, 2018 3:35 PM
Subject: Re: [TekScopes] Curve tracer plug-in for 500 series.-

Thank you very much for your comments, Dennis.

I'll read the CTs and CT plugins docs, to understand their ups and downs.

I'm with low resources for this right now, but having here some 500-series
scopes will try to leverage one for this.

Best regards,
Sebastian.

Dennis Tillman W7PF wrote:
Hi Sebastian,

The 5CT1N is quite uncommon. I was lucky to find one but it took years
of waiting for one to appear on Ebay. The 7CT1N appears far more often
on Ebay for about the same price as the 5CT1N ($200 to $300). While
they can both test tubes with my adapter they have some serious
limitations on the plate voltage they can apply to the tube, but more
importantly they are severely limited in how much power they are
capable of. As a result they can only apply a few milliamps of plate
current. This puts real limits on the kinds of tests you can perform.
If you are looking to confirm whether a tube is working or not it will
be capable of determining that for you but if you intended to do any
design work where knowing the tube's parameters and how it will
actually perform in a circuit you would need a 577 curve tracer
instead.

Of all of the curve tracers Tek makes the 577 has the best combination
of weight, size, capability, and availability and "price to
performance ratio"
to meet your needs. That is the one I suggest you consider looking for.

Good luck, Dennis Tillman W7PF

PS I was not aware of ANY curve tracer plugins for the 500 series
scopes until you mentioned the Systron-Donner plugin. Someday I hope
to see one in use so I can see how it works.

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of
Sebastian Garcia
Sent: Sunday, February 11, 2018 6:53 PM
Subject: Re: [TekScopes] Curve tracer plug-in for 500 series.-

Hi Harvey, thank you for your message.

I need a curve tracer, mainly for tubes.
Tek curve tracers seem lovely, but here in this corner of the world
these are not easy to find. And trying to pass a large and heavy used
equipment through the Customs of my country is a random problem.

So, I'm evaluating developing a custom plugin for a 500-series scope,
that's the reason of my request.

Another option would be to buy a 5115 locally (have one in sight), try
to get a reasonably priced 5CT1N from eBay, and use something like
Dennis Tillman's circuit.

Any comments are welcome.

Best regards,
Sebastian.

---
Harvey White wrote:
On Sun, 11 Feb 2018 21:36:49 -0300, you wrote:

I'm looking for technical information on this kind of plugin module,
either standard or custom built.
500 series. Never heard of one. The only plugin I know of is the
5CT1N (for a 5000 series scope) or the 7CT1N for the 7000 series
scope.


The only one I know about is the Systron Donner 9550 [1], but
unfortunately I haven't found any manuals.
Never heard of it myself. Tek did make some curve tracers, but they
seem to go for a lot of $$$$.

You could build yourself one, but then there's the question of analog
or digial, and then how sophisticated you want to be.

You normally need a voltage or current step generator, variable
polarity, and a sinewave sweep, variable polarity. That's pretty
much what's in the 7CT1N series.

Your choice from here.

Harvey

Any data about something like this will be greatly appreciated.

Regards,
Sebastian.

[1] http://w140.com/tekwiki/wiki/File:Systron-Donner-9550-1.jpg
--
Dennis Tillman W7PF
TekScopes Moderator



--
Dennis Tillman W7PF
TekScopes Moderator


Re: Curve tracer plug-in for 500 series.-

Sebastian Garcia
 

Thank you very much for your comments, Dennis.

I'll read the CTs and CT plugins docs, to understand their ups and downs.

I'm with low resources for this right now, but having here some 500-series
scopes will try to leverage one for this.

Best regards,
Sebastian.




Dennis Tillman W7PF wrote:

Hi Sebastian,

The 5CT1N is quite uncommon. I was lucky to find one but it took years of
waiting for one to appear on Ebay. The 7CT1N appears far more often on
Ebay
for about the same price as the 5CT1N ($200 to $300). While they can both
test tubes with my adapter they have some serious limitations on the plate
voltage they can apply to the tube, but more importantly they are severely
limited in how much power they are capable of. As a result they can only
apply a few milliamps of plate current. This puts real limits on the kinds
of tests you can perform. If you are looking to confirm whether a tube is
working or not it will be capable of determining that for you but if you
intended to do any design work where knowing the tube's parameters and how
it will actually perform in a circuit you would need a 577 curve tracer
instead.

Of all of the curve tracers Tek makes the 577 has the best combination of
weight, size, capability, and availability and "price to performance
ratio"
to meet your needs. That is the one I suggest you consider looking for.

Good luck, Dennis Tillman W7PF

PS I was not aware of ANY curve tracer plugins for the 500 series scopes
until you mentioned the Systron-Donner plugin. Someday I hope to see one
in
use so I can see how it works.

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of
Sebastian Garcia
Sent: Sunday, February 11, 2018 6:53 PM
Subject: Re: [TekScopes] Curve tracer plug-in for 500 series.-

Hi Harvey, thank you for your message.

I need a curve tracer, mainly for tubes.
Tek curve tracers seem lovely, but here in this corner of the world these
are not easy to find. And trying to pass a large and heavy used equipment
through the Customs of my country is a random problem.

So, I'm evaluating developing a custom plugin for a 500-series scope,
that's
the reason of my request.

Another option would be to buy a 5115 locally (have one in sight), try to
get a reasonably priced 5CT1N from eBay, and use something like Dennis
Tillman's circuit.

Any comments are welcome.

Best regards,
Sebastian.

---
Harvey White wrote:
On Sun, 11 Feb 2018 21:36:49 -0300, you wrote:

I'm looking for technical information on this kind of plugin module,
either standard or custom built.
500 series. Never heard of one. The only plugin I know of is the
5CT1N (for a 5000 series scope) or the 7CT1N for the 7000 series
scope.


The only one I know about is the Systron Donner 9550 [1], but
unfortunately I haven't found any manuals.
Never heard of it myself. Tek did make some curve tracers, but they
seem to go for a lot of $$$$.

You could build yourself one, but then there's the question of analog
or digial, and then how sophisticated you want to be.

You normally need a voltage or current step generator, variable
polarity, and a sinewave sweep, variable polarity. That's pretty much
what's in the 7CT1N series.

Your choice from here.

Harvey

Any data about something like this will be greatly appreciated.

Regards,
Sebastian.

[1] http://w140.com/tekwiki/wiki/File:Systron-Donner-9550-1.jpg



--
Dennis Tillman W7PF
TekScopes Moderator




Re: Logic Analyzer Recommendations?

Richard R. Pope
 

Ed,
I believe that I am going to go with this one. He put up some more pictures. There are six cables in this machine. If I am looking at this correctly that would be 96 channels. He also has a copy of the CD. So for about $250 including the shipping I believe that this is a pretty good buy.
GOD Bless and Thanks,
rich!

On 2/12/2018 1:31 AM, ed beers wrote:
Keyboard an mouse are a plus since there are compatibility issues (mostly solvable by adding pullups).

Not the fastest card but lots of channels. I think you mentioned using it on a historical bus so it should be fine.

I don't see any lead sets or grabbers. Price these before you buy.

I don't know what current market prices are....

Ed

On 02/11/2018 11:06 PM, Richard R. Pope wrote:
Ed,
What about this 16702A? https://www.ebay.com/itm/253358003032.
GOD Bless and Thanks,
rich!

On 2/12/2018 12:58 AM, ed beers wrote:
16500 series host processor is dog slow so the user interface is also. It can be pretty painful unless you are really patient.

The listing you link to is populated mostly with pattern generator cards. Great if you need them but I never did.

The one logic analyzer card is slow (35 MHz state/100 MHz timing?).

The cable for the logic analyzer board is ripped.

It isn't clear from the photos that you get any lead sets and grabbers for the logic analyzer board. These are pricey.

If you want a mainframe analyzer I would look for a 16700 or 16900. 16900 may be a little expensive since I think they are still the latest and greatest. These are big and heavy so shipping is a problem.

I like the 167*g series standalone ones although I don't see any great deals on ebay right now.

Ed


On 02/11/2018 02:55 PM, Richard R. Pope wrote:
Paul and Harvey,
What do you think of this 16500? He will include a manual but he says that the OS is built in and that there are no OS disks for it. It has all of the cables. I like the idea of blades. It makes repairing one easier and cheaper in the long run.
Here is the link: https://www.ebay.com/itm/332191371457
GOD Bless and Thanks,
rich!









Re: Logic Analyzer Recommendations? S-100 Bus

Richard R. Pope
 

Hello,
To answer the question of why buy a Logic Analyzer for working with the S-100 buss? Because there are times when an LED based display or a scope just won't tell you the whole story. You just can't beat being able to see the various signals and the relationships between those signals. There is a Website: S100.computers.com that is dedicated to the S100 computer system. New boards are being manufactured and can be bought from there including LED based Diagnostic boards.
GOD Bless and Thanks,
rich!

On 2/12/2018 11:20 AM, hrgerson@gmail.com wrote:
Logic Analyzers for the S-100 Buss are nice & certainly handle faster issues.
Simpler, non-floppy versions were good at those past cpu frequency & Old S-100 Buss speeds.

A less costly, more primitive but colourful solution to slower S-100 Bus problems was an S-100 Bus Probe with LED's.
I often connected a 4 probe scope up to the individual LED's on it to have a look-see at the S-100 Bus.
Certainly, did not have to monitor the entire bus that often !

Jade made one: { sometimes for sale on eBay }
http://www.s100computers.com/Hardware%20Folder/Jade/Bus%20Probe/Bus_Probe.htm

.pdf manual: { free on the Web }
http://www.s100computers.com/Hardware%20Manuals/Jade/Jade%20BusProbe.pdf

There is also a SOL S-100 Bus bare board on eBay: {for ~ $60. No affiliation. }
https://www.ebay.com/itm/SOL-20-Bus-Probe-for-S-100-computers/152719850055?hash=item238ecffa47:g:9soAAOSwbpRZy-5x

So, why bother with floppies & difficult connectors when something simple & less expensive might do ?
e.g.)

https://www.ebay.com/itm/LHT00SU1-Virtual-Oscilloscope-Logic-Analyzer-I2C-SPI-CAN-Uart-New/132482990740?hash=item1ed89a0294:g:r0sAAOSwImRYP1Fj

_-_-_-_-_ ...





Re: Logic Analyzer Recommendations? S-100 Bus

brasscat
 

The Jade Bus Probe was intended for hardware troubleshooting. S100 mainframes at Jade had one in each, installed in the last slot. Other S100 board producers also purchased it for the same purpose. It was IEEE double size, so when installed, directly and not on and extender, the display was visible. Very handy in finding dead or shorted signals in the newly produced boards that Jade manufactured.

Stan


Re: Pinouts for Ukraine Germanium Transistor

Leo Bodnar
 
Edited

The closest to official datasheet I can find is the product announcement in popular RADIO magazine of the time (1967.)
RADIO had probably the best [official] access to the manufacturing data, that was otherwise inaccessible to civilian comrades.

http://leobodnar.com/balloons/NTP/gt320.png

I have no idea what dashed area on the other side of the spot-weld bend is on that drawing.
Perhaps, it means "alternative placement" of the bend?

I'd go for ink dot in preference of the weld bend. The underside is impossible to inspect after it has been placed on the PCB. Think about it.

Mind you, in those days there was little automation so ink dots were placed manually - take them as "best effort" design feature.

Leo


Re: Questions on impedance matching

David Berlind
 

thank you @richardK. So, why did the BBC want an impedance match with its microphones? Why does highest voltage maximize SnR? Is it because signal scales faster than noise as the voltage increases? What circuit condition equates to "noise?"

Regarding speakers, I'm assuming that the impedance match is really to accommodate an average range of frequencies since the speaker is an inductor and frequency impacts impedance? I'm a little confused by why power transfer trumps voltage. Again, an assumption, but I'm assuming that in an audio situation, there's just more audio fidelity if the signal has more joules/time to distribute itself across?

Yes, I think the stuff I'm reading is aimed at RF. Most texts say these concerns don't matter for audio. But what I'm looking for is less about the application and more about the science. Clearly, there is some threshold frequency (or a grey area) where you start to cross over from "doesn't matter" to "it matters." It's funny how I keep reading "it doesn't matter at hi frequencies" but no one clarifies what they mean by that.

I keep seeing the phrase "flat output" or "output is flat"... what does that mean technically. Half my challenge is how the lingo gets tossed around.

Thank you


Re: Did Tek produce a "normal" d.c. to 50 GHz scope that one could easily poke around with ? { vs. the 11801 / 11802/ 11803, CSA 803 series }

Leo Bodnar
 

Yes, they do - https://www.tek.com/oscilloscope/dpo70000sx

CSA803/1180x are not "normal" scopes - they are sampling scopes and have a lot of limitations.
They only work on single volt, repetitive, low impedance signals with externally supplied trigger. Their user interface was considered mind-blowing for 1980's but is just a semi-random set of eclectic gimmicky counter-intuitive features.
Their vertical resolution is 8 bit and sampling jitter a few ps - I can't see it being useful for any good quality analogue work apart from checking that the signal "is there."
But if you know what you are getting into you should be able to eBuy CSA803 or 1180x and SD-26 20GHz head for around $500 if you don't rush.
This will get you started.
Don't get SD-30 or SD-32 from the outset.
Ironically, the limitations of CSA803/1180x are playing in your favour because you can often find an instrument that has almost never been turned on since 1980's. One of mine looks like it just came out of the factory.
Leo


Re: 7L18 modification to eliminate cursor trace on 7854

Nenad Filipovic
 

Yup, that's it.
But a similar document for 7L18 (7L13? 7L14?) should also be out there
somewhere, right?

Best Regards,
Nenad Filipovic

On Mon, Feb 12, 2018 at 7:22 PM, Albert Otten <aodiversen@concepts.nl>
wrote:

Among other interesting things the 7L5 Mod FB description can be found
here:
http://www.hakanh.com/dl/kits.htm .

Albert


Re: Guidance w/ Tek 475

n4buq
 

I don't know for sure, but it appears the INTENSITY control is fully CCW. Have you tried increasing the intensity?

Thanks,
Barry - N4BUQ

----- Original Message -----
From: "N0AGI" <n0agi@n0agi.com>
To: TekScopes@groups.io
Sent: Monday, February 12, 2018 1:02:09 PM
Subject: Re: [TekScopes] Guidance w/ Tek 475

Yes, that was one of the steps - please see this quick YT video of what I am
seeing. I was discussing this w/ someone earlier, his suggestion was to
look into the sweeping circuit. I am not versed w/ repairing test gear. So,
I am also looking for someone or a repair shop here in the Minneapolis area
who can take a look at this and potentially discuss repairing.
https://youtu.be/y7W543oso18

if you are from the Minneapolis region, and willing to take a look at this
for troubleshooting and repairing (for a cost of course), please drop me a
note at n0agi@n0agi.com. Thanks much

73s, N0AGI – Nagi
https://MNDMR.net/
https://N0AGI.com/

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of yoram
stein via Groups.Io
Sent: Monday, February 12, 2018 10:17 AM
To: TekScopes@groups.io
Subject: Re: [TekScopes] Guidance w/ Tek 475

Check first  "Auto" knob is pushed in.

On Monday, February 12, 2018 1:39 AM, N0AGI <n0agi@n0agi.com> wrote:


Hello everyone
I am new in this group.  I picked up a fixer-upper 475 for a good price from
a local CL seller.  The unit is in an immaculate physical condition -
however, it has at least one problem that I know of.

The scope does not put out a trace.  When the "beam finder" is pressed, I can
see the dot.  I then hooked up my FN Gen to the scope on ch1, and attached
is the output I see on the CRT when I hold down the beam finder.

I am hoping someone in this group can help with identifying the issue and
suggestions to possible fixes. I am not an expert in electronics by any
means - just a hobby enthusiast.  Consequently, if the fix requires a much
deeper work, I rather take it to a repair shop/person here locally in the
Minneapolis, MN area to get it fixed.  If it's something simple to ID and
fix, I would like to at least try to fix it myself.

Need guidance/help please.  Any pointers, YT videos to help w/ trouble
shooting, please advise

A couple of pics below

[cid:image002.jpg@01D3A288.56B79480][Image]

Thanks all

Nagi
https://N0AGI.com/















Re: Guidance w/ Tek 475

N0AGI
 

Yes, that was one of the steps - please see this quick YT video of what I am seeing. I was discussing this w/ someone earlier, his suggestion was to look into the sweeping circuit. I am not versed w/ repairing test gear. So, I am also looking for someone or a repair shop here in the Minneapolis area who can take a look at this and potentially discuss repairing.
https://youtu.be/y7W543oso18

if you are from the Minneapolis region, and willing to take a look at this for troubleshooting and repairing (for a cost of course), please drop me a note at n0agi@n0agi.com. Thanks much

73s, N0AGI – Nagi
https://MNDMR.net/
https://N0AGI.com/

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of yoram stein via Groups.Io
Sent: Monday, February 12, 2018 10:17 AM
To: TekScopes@groups.io
Subject: Re: [TekScopes] Guidance w/ Tek 475

Check first  "Auto" knob is pushed in. 

On Monday, February 12, 2018 1:39 AM, N0AGI <n0agi@n0agi.com> wrote:


Hello everyone
I am new in this group.  I picked up a fixer-upper 475 for a good price from a local CL seller.  The unit is in an immaculate physical condition - however, it has at least one problem that I know of.

The scope does not put out a trace.  When the "beam finder" is pressed, I can see the dot.  I then hooked up my FN Gen to the scope on ch1, and attached is the output I see on the CRT when I hold down the beam finder.

I am hoping someone in this group can help with identifying the issue and suggestions to possible fixes. I am not an expert in electronics by any means - just a hobby enthusiast.  Consequently, if the fix requires a much deeper work, I rather take it to a repair shop/person here locally in the Minneapolis, MN area to get it fixed.  If it's something simple to ID and fix, I would like to at least try to fix it myself.

Need guidance/help please.  Any pointers, YT videos to help w/ trouble shooting, please advise

A couple of pics below

[cid:image002.jpg@01D3A288.56B79480][Image]

Thanks all

Nagi
https://N0AGI.com/


Re: 7L18 modification to eliminate cursor trace on 7854

Albert Otten
 

Among other interesting things the 7L5 Mod FB description can be found here:
http://www.hakanh.com/dl/kits.htm .

Albert


Re: Spectral Normalizer.. a REALLY rare bird

 

Years ago I explained the purpose of the Spectral Normalizer in detail.
Search the archives and you will find a full explanation of what it does.

Dennis Tillman W7PF

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of cheater cheater
Sent: Sunday, February 11, 2018 7:16 PM
To: TekScopes@groups.io
Subject: Re: [TekScopes] Spectral Normalizer.. a REALLY rare bird

The plugins mentioned are apparently spectral normalizers, but google hits are rare and useless.

On Tue, 6 Feb 2018 14:28 Mark Wendt, <wendt.mark@gmail.com> wrote:

Dennis,

Check the subject header.

Mark


On 02/06/2018 02:07 AM, Dennis Tillman W7PF wrote:
Cheater,

I'm confused. What does your question have to do with Yngve's email?

I'm missing the connection to any Tek product I know about.
Please clarify how this relates to a specific Tek product so I can
guide
you to the right background material you can read to learn more about this.

Dennis Tillman W7PF.


-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of
cheater cheater
Sent: Friday, February 02, 2018 11:48 AM
Subject: Re: [TekScopes] Spectral Normalizer.. a REALLY rare bird

What do you use a spectral normalizer for?

Thanks

On Tue, 30 Jan 2018 13:32 , <dvs@vonspalden.de> wrote:

According to Mrs. Wanda Yantis, the design engineer of both the
7F10 and the 7F10A, the 7F10A like its sibling for the 11000
series, the 11F10, never went into production.
Engineering samples were built
though of both plugins.
Yngve



--
Dennis Tillman W7PF
TekScopes Moderator


Re: Curve tracer plug-in for 500 series.-

 

Hi Sebastian,

The 5CT1N is quite uncommon. I was lucky to find one but it took years of
waiting for one to appear on Ebay. The 7CT1N appears far more often on Ebay
for about the same price as the 5CT1N ($200 to $300). While they can both
test tubes with my adapter they have some serious limitations on the plate
voltage they can apply to the tube, but more importantly they are severely
limited in how much power they are capable of. As a result they can only
apply a few milliamps of plate current. This puts real limits on the kinds
of tests you can perform. If you are looking to confirm whether a tube is
working or not it will be capable of determining that for you but if you
intended to do any design work where knowing the tube's parameters and how
it will actually perform in a circuit you would need a 577 curve tracer
instead.

Of all of the curve tracers Tek makes the 577 has the best combination of
weight, size, capability, and availability and "price to performance ratio"
to meet your needs. That is the one I suggest you consider looking for.

Good luck, Dennis Tillman W7PF

PS I was not aware of ANY curve tracer plugins for the 500 series scopes
until you mentioned the Systron-Donner plugin. Someday I hope to see one in
use so I can see how it works.

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of
Sebastian Garcia
Sent: Sunday, February 11, 2018 6:53 PM
Subject: Re: [TekScopes] Curve tracer plug-in for 500 series.-

Hi Harvey, thank you for your message.

I need a curve tracer, mainly for tubes.
Tek curve tracers seem lovely, but here in this corner of the world these
are not easy to find. And trying to pass a large and heavy used equipment
through the Customs of my country is a random problem.

So, I'm evaluating developing a custom plugin for a 500-series scope, that's
the reason of my request.

Another option would be to buy a 5115 locally (have one in sight), try to
get a reasonably priced 5CT1N from eBay, and use something like Dennis
Tillman's circuit.

Any comments are welcome.

Best regards,
Sebastian.

---
Harvey White wrote:
On Sun, 11 Feb 2018 21:36:49 -0300, you wrote:

I'm looking for technical information on this kind of plugin module,
either standard or custom built.
500 series. Never heard of one. The only plugin I know of is the
5CT1N (for a 5000 series scope) or the 7CT1N for the 7000 series
scope.


The only one I know about is the Systron Donner 9550 [1], but
unfortunately I haven't found any manuals.
Never heard of it myself. Tek did make some curve tracers, but they
seem to go for a lot of $$$$.

You could build yourself one, but then there's the question of analog
or digial, and then how sophisticated you want to be.

You normally need a voltage or current step generator, variable
polarity, and a sinewave sweep, variable polarity. That's pretty much
what's in the 7CT1N series.

Your choice from here.

Harvey

Any data about something like this will be greatly appreciated.

Regards,
Sebastian.

[1] http://w140.com/tekwiki/wiki/File:Systron-Donner-9550-1.jpg



--
Dennis Tillman W7PF
TekScopes Moderator


Looking for 7854 vert amp board 670-5832-00

Brian Bloom
 

Hey everyone!

It's been a while since I've been here, but I'm back now! Life left me no time for hobbies there for a bit...

I'm interested in buying a 7854 parts scope with working vert amp board, a working replacement board, or a 155-0064-00 and someone capable of re-balancing the circuit. This scope is in great shape, but the '0064 has an internal intermittent connection. I can tap on it with a screwdriver handle and occasionally get the device to "function" for a bit. When it is functioning, I can hear the buzz of the arcing when the side cover is off.

Thanks for the help,
Brian


Did Tek produce a "normal" d.c. to 50 GHz scope that one could easily poke around with ? { vs. the 11801 / 11802/ 11803, CSA 803 series }

garp66
 
Edited

Did Tektronix make a 50 GHz GHz scope ??

I was looking for an older Tek GHz scope (hopefully inexpensive) to aid in design & testing of GHz pre-amps & LO's for amateur radio-astronomy. Some designs are up as high as 50 GHz, and a few down at 1.42 & 10 GHz.

I had thought that I might be able to use, (and did acquire, to repair) the 11801a & some SD-24 & SD-3x modules.
But, I have no experience with the 11801a, *yet* ...

{ Are there any GHz measurement 1180x Tek scope mentors on this forum, please ? }.

-- However, the 11801a scope *seems* too delicate { ESD damage prone, restricted signals & odd external triggering requirements } for my general poking around at these frequencies with GHz Rx & LO test set-ups ... { ? }

I do have an HP 70K / HP 70000 MMS SA + signal generator system (very happy with it) that can take me up to 40GHz, but am looking for a reasonably robust, older, inexpensive "normal" 40 to 60 GHz scope to compliment measurements in design/testing.

thank you,


Re: Logic Analyzer Recommendations? S-100 Bus

Bert Haskins
 

For that matter, a 7D01 and a Df1 or so will do a very nice job at those buss speeds.
Again, don't one without a good set of pods .
I have just that setup but I seldom use it it anymore.

On 2/12/2018 12:20 PM, hrgerson@gmail.com wrote:
Logic Analyzers for the S-100 Buss are nice & certainly handle faster issues.
Simpler, non-floppy versions were good at those past cpu frequency & Old S-100 Buss speeds.

A less costly, more primitive but colourful solution to slower S-100 Bus problems was an S-100 Bus Probe with LED's.
I often connected a 4 probe scope up to the individual LED's on it to have a look-see at the S-100 Bus.
Certainly, did not have to monitor the entire bus that often !

Jade made one: { sometimes for sale on eBay }
http://www.s100computers.com/Hardware%20Folder/Jade/Bus%20Probe/Bus_Probe.htm

.pdf manual: { free on the Web }
http://www.s100computers.com/Hardware%20Manuals/Jade/Jade%20BusProbe.pdf

There is also a SOL S-100 Bus bare board on eBay: {for ~ $60. No affiliation. }
https://www.ebay.com/itm/SOL-20-Bus-Probe-for-S-100-computers/152719850055?hash=item238ecffa47:g:9soAAOSwbpRZy-5x

So, why bother with floppies & difficult connectors when something simple & less expensive might do ?
e.g.)

https://www.ebay.com/itm/LHT00SU1-Virtual-Oscilloscope-Logic-Analyzer-I2C-SPI-CAN-Uart-New/132482990740?hash=item1ed89a0294:g:r0sAAOSwImRYP1Fj

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Re: Logic Analyzer Recommendations? S-100 Bus

brasscat
 

Hello hrgerson, Glad you liked it!

SK


Re: Something you didn't know: What did Tek have to do with Packing Peanuts?

Dan Rae
 

Talking of rodents, if you collect packing peanuts for shipping Tek gear, be aware that the compostable 'peanuts' now in wide use are much enjoyed by rats.  I have to store them here in plastic bags suspended by ropes which seems to keep them safe.   Things seem to have come full circle.
Dan


Re: Logic Analyzer Recommendations? S-100 Bus

garp66
 

Logic Analyzers for the S-100 Buss are nice & certainly handle faster issues.
Simpler, non-floppy versions were good at those past cpu frequency & Old S-100 Buss speeds.

A less costly, more primitive but colourful solution to slower S-100 Bus problems was an S-100 Bus Probe with LED's.
I often connected a 4 probe scope up to the individual LED's on it to have a look-see at the S-100 Bus.
Certainly, did not have to monitor the entire bus that often !

Jade made one: { sometimes for sale on eBay }
http://www.s100computers.com/Hardware%20Folder/Jade/Bus%20Probe/Bus_Probe.htm

.pdf manual: { free on the Web }
http://www.s100computers.com/Hardware%20Manuals/Jade/Jade%20BusProbe.pdf

There is also a SOL S-100 Bus bare board on eBay: {for ~ $60. No affiliation. }
https://www.ebay.com/itm/SOL-20-Bus-Probe-for-S-100-computers/152719850055?hash=item238ecffa47:g:9soAAOSwbpRZy-5x

So, why bother with floppies & difficult connectors when something simple & less expensive might do ?
e.g.)

https://www.ebay.com/itm/LHT00SU1-Virtual-Oscilloscope-Logic-Analyzer-I2C-SPI-CAN-Uart-New/132482990740?hash=item1ed89a0294:g:r0sAAOSwImRYP1Fj

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