¿ªÔÆÌåÓý

Date

Re: Introduction

 

Crikey!

Mentions of Data General Nova computers!

I was wrangling them (Nova 3's and 4's) back in the early 80's where they were used to run GCMS chemical analysis machines assembled where I worked.

Memories of booting the 3's with the front panel switches, and some "fat finger" entered binary code via those console switches to "test" defective I/O boards on extenders, using a simple logic probe (two lights type!)

And some software that played tunes on a Tektronix 4010 terminal!

Thanks for the surprise burst of memories!

Dave 'KBV.

--
Created on and sent from a Unix like PC running and using open source software:


Re: Introduction

 

No joke to die-hard EMACS afficionados. I remember very acrimonious discussions.

This was in the early 90s.

Over an editor? Give me a break...

DaveD
KC0WJN

Thanks for all the fish.
==============================
All spelling mistakes are the responsibilty of the reader (Rick Renz, STK, ca. 1994)

==============================

On Sep 19, 2024, at 21:41, Dave McGuire via groups.io <mcguire@...> wrote:

?
'Twas a joke. But emacs has to be one of the most widely-ported pieces of software in history.

-Dave

On September 19, 2024 8:23:47 PM "Harvey White" <madyn@...> wrote:
Never used it, so... wasn't available for what I was doing.

Harvey


On 9/19/2024 7:57 PM, Dave McGuire wrote:

Emacs!

On 9/19/24 19:53, Harvey White wrote:
Unless you like VHDL...... <grin>

Harvey


On 9/19/2024 5:29 PM, Dave Daniel wrote:
Add in SystemVerilog if one is contemplating FPGA/ASIC work.

DaveD
KC0WJN

Thanks for all the fish.
==============================
All spelling mistakes are the responsibilty of the reader (Rick
Renz, STK, ca. 1994)
==============================

On Sep 19, 2024, at 16:03, Roy Thistle via groups.io
<roy.thistle@...> wrote:

?
On Thu, Sep 19, 2024 at 09:11 AM, Frank Mashockie wrote:

I've been considering going into an online master's program for
EE.

If your boss is not paying for it... It's expensive.
2 to 3 years to complete, on average.
Say 50,000USD total cost, on average... and up... for many good US
schools.
Georgia Tech is... about the lowest cost... 10,000USD total cost.
Everyone is different... but IMO... the average person... depending
on which specialty they want... needs to have a strong background in
calculus... as in vector, complex, and differential equations...
linear algebra... numerical methods... statistics.
Computer science skills are required too.
Programming in Python or C
Simulations in software packages like Pspice
HDL like Verilog, or VHDL
Not to mention a strong background in
circuit analysis
devices
probably other stuff I forgot too.



--
Dave McGuire, AK4HZ
New Kensington, PA







Re: Introduction

 

On Fri, Sep 20, 2024 at 06:52 AM, Harvey White wrote:
I always encouraged my students to learn both hardware and software, even if they were not going to use it immediately (either!).
I concur.? The more engineering skills you have, the more valuable you will be.? Overspecialization could be a problem in the sense that if you are laid off it might be harder to find a new job.?
?
Personally, all my FPGA work was in Verilog, not VHDL.? But if you know one of them, I'm sure you'd be able to pick up the other.
?
I'd add Python and perhaps MATLAB to Harvey's list.? The former to write programs to drive GPIB instruments, the latter for analysis, although you can also control instruments using MATLAB.? And don't worry too much about learning software -- you'll be surprised at how easy it is.? Dip your toe into it by taking one of the MOOC (massive open on-line course).? ?I did this years ago, pre-Covid, with a course on Python taught by a prof at Vanderbilt University, via Coursera.? In fact I talked my wife into taking the course, too.? (She is a retired high-school math teacher who had zero programming knowledge).
?
Your experience debugging boards is invaluable -- I've always thought engineers fresh out of school should spend their first six months helping the manufacturing line, fixing 'dog' boards, etc.? One quickly learns the value of clear documentation as well as the types of issues that arise in manufacturing from a poor design.
?
The advantage of a college education is that you learn various topics in a logical progression -- that is, you create a foundation of knowledge and build upon it, layer by layer.? Whereas learning topics piece-meal, unstructured, can leave voids that, if you had had that knowledge, it might have made things easier or clearer.
?
- Jeff, k6jca
?
?


Re: Introduction

 

Eeek! I used EMACS until I realized that vi was always available on any UNIX system (vi, vim, gvim, etc.) and I kept getting "assigned" sysadmin duties on every friggin UNIX-like system STK Printer Ops acquired, and needed an editor upon which I could always rely. I still have that yellow comb-bound EMACS book somewhere. Using EMACS gave me my first exposure to the Gnu Public License. Dang. For an EE/Physics major, entering into the UNIX/HPUX/VMS/SunOS/Solaris world where people actually *argued* about using EMACS or vi or ed was kind of like entering Oz. I scurried back to my electrons and holes as quickly as I was able. LOL.

DaveD
KC0WJN

Thanks for all the fish.
==============================
All spelling mistakes are the responsibilty of the reader (Rick Renz, STK, ca. 1994)
==============================

On Sep 19, 2024, at 19:57, Dave McGuire via groups.io <mcguire@...> wrote:

?
Emacs!

On 9/19/24 19:53, Harvey White wrote:
Unless you like VHDL...... <grin>
Harvey
On 9/19/2024 5:29 PM, Dave Daniel wrote:
Add in SystemVerilog if one is contemplating FPGA/ASIC work.

DaveD
KC0WJN

Thanks for all the fish.
==============================
All spelling mistakes are the responsibilty of the reader (Rick Renz, STK, ca. 1994)
==============================

On Sep 19, 2024, at 16:03, Roy Thistle via groups.io <roy.thistle@...> wrote:

?
On Thu, Sep 19, 2024 at 09:11 AM, Frank Mashockie wrote:

I've been considering going into an online master's program for EE.

If your boss is not paying for it... It's expensive.
2 to 3 years to complete, on average.
Say 50,000USD total cost, on average... and up... for many good US schools.
Georgia Tech is... about the lowest cost... 10,000USD total cost.
Everyone is different... but IMO... the average person... depending on which specialty they want... needs to have a strong background in
calculus... as in vector, complex, and differential equations... linear algebra... numerical methods... statistics.
Computer science skills are required too.
Programming in Python or C
Simulations in software packages like Pspice
HDL like Verilog, or VHDL
Not to mention a strong background in
circuit analysis
devices
probably other stuff I forgot too.

--
Dave McGuire, AK4HZ
New Kensington, PA





Re: Introduction

 

Hi Mike
?
I just sent you a long email response to what shows as your comcast email but it immediately bounced back. I tried a second time so I hope it gets through.
?
Jim


Hughes IMPATT

 

I realise this is Not HP but it is related

Can anyone help with any IMPATT parts or information as

I am resurrecting a few Hughes IMPATT oscillators to work with the HP 8620 sweeper

?

Also looking for WR08 parts and mine flange parts

?

Regards Paul South coast UK


Re: HP 141T Power Supply Help Needed

 

Mike, after replacing Q15 and switching to CONV mode I had significant success and was able to view the FM broadcast frequencies with ease.? ?
Shortly after I stopped receiving RF, but the power supplies and fuses all check out this morning.? Still an issue with blooming in storage mode that i'll come back to later.?
? As such, I've started a new post for the 8554b symptoms.? ?


On Fri, Sep 20, 2024 at 10:50?AM Michael Bafaro via <m.bafaro=[email protected]> wrote:

Bill,

?

I believe you said that the low voltage supplies are in specification so the next thing to check is the two fuses on the back of the 8552 IF module.? They are protecting the circuits in the IF and I assume the RF sections that are run from the -12.6V.? There is an over voltage crowbar circuit that deliberately blows the two fuses if the -12.6V ever goes above -14.5V.? The symptoms are that the screen of the CRT is blank but of you run up the intensity you can see a faint glow on the right side of the tube.? This is because the deflection amps are not balanced (because the -12.6 is not there) and the beam is way of the screen.? I suggest that you check those fuses before you go on.?

?

Mike Bafaro

?

From: [email protected] <[email protected]> On Behalf Of Bill Berzinskas
Sent: Thursday, September 19, 2024 4:00 PM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP 141T Power Supply Help Needed

?

Replaced q15 and the crt is at least trying to do something.??? Ordered a hv probe but wondering if maybe this is related to deflection amps.? ?Doesn't seem good so shut it down after the Pic.? ? Focus Doesn't seem to do much.? ?

?

On Wed, Sep 18, 2024, 2:35?PM Bill Berzinskas via<bberzinskas=[email protected]> wrote:

Thanks for that feedback Dave.?

At this point in my struggle with this machine, nothing about it surprises me.? ?It could have been hit by lightning for all i know.? ? :-P?

One bit of good news, the modules do appear to be working.? I was able to view the scan and vertical outputs on my scope and it does look as i'd expect.??
Nice little mid week surprise for me there.??

?

On Wed, Sep 18, 2024 at 1:53?PM Dave Wise via <d44617665=[email protected]> wrote:

I can't see what could destroy Q15, except perhaps C18 shorting.

?

Dave Wise


From: [email protected] <[email protected]> on behalf of Bill Berzinskas <bberzinskas@...>
Sent: Wednesday, September 18, 2024 8:15 AM
To: [email protected] <[email protected]>
Subject: Re: [HP-Agilent-Keysight-equipment] HP 141T Power Supply Help Needed

?

I don't have a HV probe currently, but its on my shopping list.? ? I'm going to go with 0v at the moment though, given the state of Q15.??
I guess I'm just wondering?if I should expect other damage to have occurred when this part failed.? ??

I will replace Q15 this week, get a probe and report back though!?

?

On Wed, Sep 18, 2024 at 10:59?AM Michael Bafaro via <m.bafaro=[email protected]> wrote:

Bill,

?

Q15 is the FET that is in the HV regulator circuit.? The gate to the other leads will read open if the ohm meter is connected to back bias the junction.? The question is what voltage is present at the control grid of the CRT?? If you have a high voltage probe you can measure it directly at the green lead on the PCB that goes to the CRT socket.? I measured -2580.? What voltage do you see??

?

Mike

?

From: [email protected] <[email protected]> On Behalf Of Bill Berzinskas
Sent: Wednesday, September 18, 2024 9:41 AM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP 141T Power Supply Help Needed

?

Checking things out last night in the LV side of the HV supply, I saw on the edge of Q15 a small delamination. Very tough to see in that tight space but just enough to warrant further?investigation.? ?I pulled Q15 and a sizable chunk was blown out and barely hanging on, so it's physically OPEN between pins 1 and 2.

I've ordered a replacement.? Anything else to be concerned with in this area in such a situation?? Q13 and 14 don't seem to be damaged as far as I can tell, at this time.? ??

?

On Tue, Sep 17, 2024 at 9:27?AM Bill Berzinskas via <bberzinskas=[email protected]> wrote:

Probably not related strictly to the PSU, so happy to make a new thread if needed.? ?

I've gone over the A5 board at a high level.? ?Checked all the test points and all but #7 appear to be as expected on the scope.
One of the schematics has voltages at the wiring pins, and those also look ok.? ?I have not checked per-node voltage within the circuit yet.? ??
Is this "fairly conclusive evidence" that A5 is generally OK?? ?I don't want to dwell on it, I'd thought that maybe Blanking or Pulse were having issues?
but now i'm thinking not.? ??

More power supply related, I don't see any oscillation on the HV oscillator.? ?The labelled 7v is closer to 12v so I'm thinking the problem is around Q13, 14 or 15.? Q15 looks kind?of not good, seeing .1v breakdown with a DMM diode test in-circuit.? ?I know thats?not the best test, but it does seem to work for most of the other transistors I've tested.??

?

On Sat, Sep 14, 2024 at 2:05?PM Dave Wise via <d44617665=[email protected]> wrote:

The worst bugs make the instrument diverge from the schematic, often in ways that would look like nonsense if you drew it there.


From: [email protected] <[email protected]> on behalf of Frank Mashockie <fmashockie@...>
Sent: Saturday, September 14, 2024 9:57 AM
To: [email protected] <[email protected]>
Subject: Re: [HP-Agilent-Keysight-equipment] HP 141T Power Supply Help Needed

?

"From over 40 years of fault finding and repair experience in a wide range of electronic products, not just instrumentation, the weirdest symptoms often have a really simple root cause!"

?

This has been my experience as well! Makes it very easy to go down a rabbit hole. Which is why I always do a thorough visual inspection first. Also checking mechanical components of switches, pots, etc. Giving them a good clean right off the bat and testing those first can save you a lot of headache.

?

-Frank


Re: HP 141T Power Supply Help Needed

 

¿ªÔÆÌåÓý

Bill,

?

I believe you said that the low voltage supplies are in specification so the next thing to check is the two fuses on the back of the 8552 IF module.? They are protecting the circuits in the IF and I assume the RF sections that are run from the -12.6V.? There is an over voltage crowbar circuit that deliberately blows the two fuses if the -12.6V ever goes above -14.5V.? The symptoms are that the screen of the CRT is blank but of you run up the intensity you can see a faint glow on the right side of the tube.? This is because the deflection amps are not balanced (because the -12.6 is not there) and the beam is way of the screen.? I suggest that you check those fuses before you go on.?

?

Mike Bafaro

?

From: [email protected] <[email protected]> On Behalf Of Bill Berzinskas
Sent: Thursday, September 19, 2024 4:00 PM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP 141T Power Supply Help Needed

?

Replaced q15 and the crt is at least trying to do something.??? Ordered a hv probe but wondering if maybe this is related to deflection amps.? ?Doesn't seem good so shut it down after the Pic.? ? Focus Doesn't seem to do much.? ?

?

On Wed, Sep 18, 2024, 2:35?PM Bill Berzinskas via<bberzinskas=[email protected]> wrote:

Thanks for that feedback Dave.?

At this point in my struggle with this machine, nothing about it surprises me.? ?It could have been hit by lightning for all i know.? ? :-P?

One bit of good news, the modules do appear to be working.? I was able to view the scan and vertical outputs on my scope and it does look as i'd expect.??
Nice little mid week surprise for me there.??

?

On Wed, Sep 18, 2024 at 1:53?PM Dave Wise via <d44617665=[email protected]> wrote:

I can't see what could destroy Q15, except perhaps C18 shorting.

?

Dave Wise


From: [email protected] <[email protected]> on behalf of Bill Berzinskas <bberzinskas@...>
Sent: Wednesday, September 18, 2024 8:15 AM
To: [email protected] <[email protected]>
Subject: Re: [HP-Agilent-Keysight-equipment] HP 141T Power Supply Help Needed

?

I don't have a HV probe currently, but its on my shopping list.? ? I'm going to go with 0v at the moment though, given the state of Q15.??
I guess I'm just wondering?if I should expect other damage to have occurred when this part failed.? ??

I will replace Q15 this week, get a probe and report back though!?

?

On Wed, Sep 18, 2024 at 10:59?AM Michael Bafaro via <m.bafaro=[email protected]> wrote:

Bill,

?

Q15 is the FET that is in the HV regulator circuit.? The gate to the other leads will read open if the ohm meter is connected to back bias the junction.? The question is what voltage is present at the control grid of the CRT?? If you have a high voltage probe you can measure it directly at the green lead on the PCB that goes to the CRT socket.? I measured -2580.? What voltage do you see??

?

Mike

?

From: [email protected] <[email protected]> On Behalf Of Bill Berzinskas
Sent: Wednesday, September 18, 2024 9:41 AM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP 141T Power Supply Help Needed

?

Checking things out last night in the LV side of the HV supply, I saw on the edge of Q15 a small delamination. Very tough to see in that tight space but just enough to warrant further?investigation.? ?I pulled Q15 and a sizable chunk was blown out and barely hanging on, so it's physically OPEN between pins 1 and 2.

I've ordered a replacement.? Anything else to be concerned with in this area in such a situation?? Q13 and 14 don't seem to be damaged as far as I can tell, at this time.? ??

?

On Tue, Sep 17, 2024 at 9:27?AM Bill Berzinskas via <bberzinskas=[email protected]> wrote:

Probably not related strictly to the PSU, so happy to make a new thread if needed.? ?

I've gone over the A5 board at a high level.? ?Checked all the test points and all but #7 appear to be as expected on the scope.
One of the schematics has voltages at the wiring pins, and those also look ok.? ?I have not checked per-node voltage within the circuit yet.? ??
Is this "fairly conclusive evidence" that A5 is generally OK?? ?I don't want to dwell on it, I'd thought that maybe Blanking or Pulse were having issues?
but now i'm thinking not.? ??

More power supply related, I don't see any oscillation on the HV oscillator.? ?The labelled 7v is closer to 12v so I'm thinking the problem is around Q13, 14 or 15.? Q15 looks kind?of not good, seeing .1v breakdown with a DMM diode test in-circuit.? ?I know thats?not the best test, but it does seem to work for most of the other transistors I've tested.??

?

On Sat, Sep 14, 2024 at 2:05?PM Dave Wise via <d44617665=[email protected]> wrote:

The worst bugs make the instrument diverge from the schematic, often in ways that would look like nonsense if you drew it there.


From: [email protected] <[email protected]> on behalf of Frank Mashockie <fmashockie@...>
Sent: Saturday, September 14, 2024 9:57 AM
To: [email protected] <[email protected]>
Subject: Re: [HP-Agilent-Keysight-equipment] HP 141T Power Supply Help Needed

?

"From over 40 years of fault finding and repair experience in a wide range of electronic products, not just instrumentation, the weirdest symptoms often have a really simple root cause!"

?

This has been my experience as well! Makes it very easy to go down a rabbit hole. Which is why I always do a thorough visual inspection first. Also checking mechanical components of switches, pots, etc. Giving them a good clean right off the bat and testing those first can save you a lot of headache.

?

-Frank


Re: Probe Cables for 16801A Logic Analyser

 

There is a document from Keysight which has a logic analyzer cable compatibility table (page 46) and also describes all the probing accessories which go on the end of the cable (flying leads, etc.).
?
Probing Solutions for Logic Analyzers:
?
? https://www.keysight.com/us/en/assets/7018-06707/data-sheets/5968-4632.pdf
?
-mark
?


Re: HP 8554B, no RF after first successful run...

 


HP 8554B, no RF after first successful run...

 

Back again, but this time with less power supply woes.? (thanks again for the help!)?

?I took my "new machine" for a little ride last night, I set it to 100mhz and was able to capture the attached image.? ?It felt REALLY good to see!? ? Ran it for an hour or so like this, flipped it off and ate dinner and came back to ONLY noise floor - no signals anymore.? ? ?I've got a little telescoping antenna hooked to it, and i did try to run the calibrator into it but AFTER i noticed problems.? ? ? A little confused, power supplies look OK.? ? Do I start digging into the attenuator / first mixer then?? ? Going to read the manual some more, that thing is THICK but figured I'd put a call out to the experts.? ??


Re: Introduction

 

Yes. But I prefer Verilog, simply because I wrote much more Verilog and SystemVerilog that VHDL.

DaveD
KC0WJN

Thanks for all the fish.
==============================
All spelling mistakes are the responsibilty of the reader (Rick Renz, STK, ca. 1994)
==============================

On Sep 19, 2024, at 19:53, Harvey White via groups.io <madyn@...> wrote:

?Unless you like VHDL...... <grin>

Harvey


On 9/19/2024 5:29 PM, Dave Daniel wrote:
Add in SystemVerilog if one is contemplating FPGA/ASIC work.

DaveD
KC0WJN

Thanks for all the fish.
==============================
All spelling mistakes are the responsibilty of the reader (Rick Renz, STK, ca. 1994)
==============================

On Sep 19, 2024, at 16:03, Roy Thistle via groups.io <roy.thistle@...> wrote:
?
On Thu, Sep 19, 2024 at 09:11 AM, Frank Mashockie wrote:
I've been considering going into an online master's program for EE.

If your boss is not paying for it... It's expensive.
2 to 3 years to complete, on average.
Say 50,000USD total cost, on average... and up... for many good US schools.
Georgia Tech is... about the lowest cost... 10,000USD total cost.
Everyone is different... but IMO... the average person... depending on which specialty they want... needs to have a strong background in
calculus... as in vector, complex, and differential equations... linear algebra... numerical methods... statistics.
Computer science skills are required too.
Programming in Python or C
Simulations in software packages like Pspice
HDL like Verilog, or VHDL
Not to mention a strong background in
circuit analysis
devices
probably other stuff I forgot too.





Re: HP 339A Distortion Test Set repair/refurbish (hamfest find) (long read)

 

In message <[email protected]>, Paul
Bicknell <admin@...> writes
Hi Tony what Distortion level did you manage to get the 339 down to ? also
what is the level flatness you have managed to achieve between say 75 hz to
20 Khz ?
It was just that Flat!, and IIRC it was around .001% some of course was
just noise..


-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of tony sayer
Sent: 09 September 2024 11:28
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP 339A Distortion Test Set
repair/refurbish (hamfest find) (long read)

In message <[email protected]>, Jim via groups.io
<james_buttons@...> writes
Thanks Dave.

?

I'll look into that next. During my initial testing I did look at
the freq. output of the oscillator and I didn't see anything that
looked outrageous re: actual vs. setting, but I didn't run the math
to see if in spec. I the cases where the input LED was on,
sometimes the oscillator freq was spot on and other frequencies
where the LED was on freqs. seemed off from spec, but not too far
off. I think it may be a little bit of both - notch filter center
freq. being off in some cases, oscillator freq. off in others.

?

I looked through the schematic at the section for the monitor
output and it's a simple path from the main meter circuitry (which
appears to be working) - just a resistor, fuse and then the
isolation relay. I hear the relay get activated/deactivated, so
once I have the unit open again I will probe that path and see
where the signal stops. I am hoping that it's just the 0.062A fuse.
?

?

I am going to let the unit "bake" for a week or so. After 24 hours
the freq. that starts requiring the vernier is now down from 3.5
KHz to 3.3 KHz.

?

Did I read somewhere where HP did not include the schematic for the
339A's oscillator itself in the service manual?

?
I think it is there are some versions for this unit online here and there
had one for years very reliable;!

Whilst your at it make sure of you change the power supply caps this
improved the distortion reading on mine by a decent amount supply ripple i
suppose?>.


--
Tony Sayer













--
Tony Sayer

Bancom Communications U.K. Tel+44 1223 566577 Mob: 07707799230

4 Wingate close, Cambridge, England, CB2 9HW E-Mail tony@...


Re: Introduction

 

On the first system in my professional life, Emacs was written in Lisp and
ran on Multics (the system that the Unix pun came from). When we moved to
Unix on a Dec Alpha there were insufficient resources for the user base to use
something that large, so I added a number of features to a version of
"microemacs" that was floating around to make it actually usable.

I still use that version, it's pretty much ingrained into my fingers after
40 years. I think the last time I compiled it was 20 years ago. Also, programs
like rlwrap can add emacs edit keystrokes and history features to almost any
command driven software. Probably 2-4X the productivity of the point and
click model.

Paul

On Fri, Sep 20, 2024 at 08:53:52AM -0400, Dave McGuire wrote:

Was, but no longer?

Though the "editor wars" are fun, I actually use both vi and emacs
regularly. I'm going to make a quick edit /etc/resolv.conf, I use vi. If
I'm sitting down for a ten-hour coding session, I use emacs.

-Dave
--
Paul Amaranth, GCIH | Manchester MI, USA
Aurora Group of Michigan, LLC | Security, Systems & Software
paul@... | Unix/Linux - We don't do windows


Re: Introduction

 

You're welcome.? I can take a design from concept to hardware to pc board to build and then do the same for software.? Limitations, of course.

I always encouraged my students to learn both hardware and software, even if they were not going to use it immediately (either!).

I have a program written in C++ (on the PC) that parses an EAGLE board file, then produces an OpenSCAD file (will need custom OpenSCAD parts) to model the board.? Makes it useful for designing cases and assemblies as well as getting an idea of what fits where.

So current languages?? embedded C, C++ for microprocessors, C++ for the PC, VHDL for FPGAs, OpenSCAD for 3D designs.

I have mostly dropped Delphi, which can be somewhat annoying to code in.? Not a bad language (Pascal), but gives me no transportability to the microprocessor realm.

I do mostly digital and power supply design (in support), with a reasonably heavy concentration in microprocessors.

Harvey

On 9/20/2024 9:27 AM, Frank Mashockie wrote:
Thanks Harvey!
I really appreciate the feedback.? The software is definitely my weakest point.? I think it might be a good idea to start introducing myself to some of it.? I've gotten familiar with programming development software to flash MCUs, but that is about it.
I love repair of PCBs.? The problem solving and troubleshooting.? Learning more about different types of circuits.? With that, I think I'd like to get into PCB design. Definitely hardware related.? But I guess I won't know for sure until I get into that degree - there's still so much I need/want to learn.? I am also interested by power systems and the grid. I probably would have been a lineman if I wasn't afraid heights!
Sorry I don't mean to derail the thread, but I greatly appreciate the feedback!
-Frank


Re: Introduction

 

Thanks Harvey!?
?
I really appreciate the feedback.? The software is definitely my weakest point.? I think it might be a good idea to start introducing myself to some of it.? I've gotten familiar with programming development software to flash MCUs, but that is about it.?
?
I love repair of PCBs.? The problem solving and troubleshooting.? Learning more about different types of circuits.? With that, I think I'd like to get into PCB design.? Definitely hardware related.? But I guess I won't know for sure until I get into that degree - there's still so much I need/want to learn.? I am also interested by power systems and the grid.? I probably would have been a lineman if I wasn't afraid heights!??
?
Sorry I don't mean to derail the thread, but I greatly appreciate the feedback!
?
-Frank


Re: Introduction

 

When I left the world of UNIX (actually "CLIX" for our product), I travelled to the dark side and use notepad, etc., now. I do miss the vi days. So much one can do without ever taking one's hands off of the keyboard.

Barry - N4BUQ

Was, but no longer?

Though the "editor wars" are fun, I actually use both vi and emacs
regularly. I'm going to make a quick edit /etc/resolv.conf, I use vi.
If I'm sitting down for a ten-hour coding session, I use emacs.

-Dave

On 9/20/24 08:26, n4buq wrote:
I was a vi man myself.

Barry - N4BUQ

'Twas a joke. But emacs has to be one of the most widely-ported pieces of
software in history.

-Dave

On September 19, 2024 8:23:47 PM "Harvey White" <madyn@...> wrote:
Never used it, so... wasn't available for what I was doing.

Harvey


On 9/19/2024 7:57 PM, Dave McGuire wrote:

Emacs!

On 9/19/24 19:53, Harvey White wrote:
Unless you like VHDL...... <grin>

Harvey


On 9/19/2024 5:29 PM, Dave Daniel wrote:
Add in SystemVerilog if one is contemplating FPGA/ASIC work.

DaveD
KC0WJN

Thanks for all the fish.
==============================
All spelling mistakes are the responsibilty of the reader (Rick
Renz, STK, ca. 1994)
==============================

On Sep 19, 2024, at 16:03, Roy Thistle via groups.io
<roy.thistle@...> wrote:

?
On Thu, Sep 19, 2024 at 09:11 AM, Frank Mashockie wrote:

I've been considering going into an online master's program for
EE.

If your boss is not paying for it... It's expensive.
2 to 3 years to complete, on average.
Say 50,000USD total cost, on average... and up... for many good US
schools.
Georgia Tech is... about the lowest cost... 10,000USD total cost.
Everyone is different... but IMO... the average person... depending
on which specialty they want... needs to have a strong background in
calculus... as in vector, complex, and differential equations...
linear algebra... numerical methods... statistics.
Computer science skills are required too.
Programming in Python or C
Simulations in software packages like Pspice
HDL like Verilog, or VHDL
Not to mention a strong background in
circuit analysis
devices
probably other stuff I forgot too.



--
Dave McGuire, AK4HZ
New Kensington, PA








--
Dave McGuire, AK4HZ
New Kensington, PA



Re: Introduction

 

Oh I'd love to hear the story behind that one!

-Dave

On 9/20/24 09:07, David Holland wrote:
You forgot one:
If I want to cause a production outage, I use pico...
(yes, that actually happened somewhere....)
On Fri, Sep 20, 2024 at 8:53?AM Dave McGuire via groups.io
<mcguire@...> wrote:


Was, but no longer?

Though the "editor wars" are fun, I actually use both vi and emacs
regularly. I'm going to make a quick edit /etc/resolv.conf, I use vi.
If I'm sitting down for a ten-hour coding session, I use emacs.

-Dave

On 9/20/24 08:26, n4buq wrote:
I was a vi man myself.

Barry - N4BUQ

'Twas a joke. But emacs has to be one of the most widely-ported pieces of
software in history.

-Dave

On September 19, 2024 8:23:47 PM "Harvey White" <madyn@...> wrote:
Never used it, so... wasn't available for what I was doing.

Harvey


On 9/19/2024 7:57 PM, Dave McGuire wrote:

Emacs!

On 9/19/24 19:53, Harvey White wrote:
Unless you like VHDL...... <grin>

Harvey


On 9/19/2024 5:29 PM, Dave Daniel wrote:
Add in SystemVerilog if one is contemplating FPGA/ASIC work.

DaveD
KC0WJN

Thanks for all the fish.
==============================
All spelling mistakes are the responsibilty of the reader (Rick
Renz, STK, ca. 1994)
==============================

On Sep 19, 2024, at 16:03, Roy Thistle via groups.io
<roy.thistle@...> wrote:

?
On Thu, Sep 19, 2024 at 09:11 AM, Frank Mashockie wrote:

I've been considering going into an online master's program for
EE.

If your boss is not paying for it... It's expensive.
2 to 3 years to complete, on average.
Say 50,000USD total cost, on average... and up... for many good US
schools.
Georgia Tech is... about the lowest cost... 10,000USD total cost.
Everyone is different... but IMO... the average person... depending
on which specialty they want... needs to have a strong background in
calculus... as in vector, complex, and differential equations...
linear algebra... numerical methods... statistics.
Computer science skills are required too.
Programming in Python or C
Simulations in software packages like Pspice
HDL like Verilog, or VHDL
Not to mention a strong background in
circuit analysis
devices
probably other stuff I forgot too.



--
Dave McGuire, AK4HZ
New Kensington, PA








--
Dave McGuire, AK4HZ
New Kensington, PA




--
Dave McGuire, AK4HZ
New Kensington, PA


Re: Introduction

 

You forgot one:

If I want to cause a production outage, I use pico...

(yes, that actually happened somewhere....)

On Fri, Sep 20, 2024 at 8:53?AM Dave McGuire via groups.io
<mcguire@...> wrote:


Was, but no longer?

Though the "editor wars" are fun, I actually use both vi and emacs
regularly. I'm going to make a quick edit /etc/resolv.conf, I use vi.
If I'm sitting down for a ten-hour coding session, I use emacs.

-Dave

On 9/20/24 08:26, n4buq wrote:
I was a vi man myself.

Barry - N4BUQ

'Twas a joke. But emacs has to be one of the most widely-ported pieces of
software in history.

-Dave

On September 19, 2024 8:23:47 PM "Harvey White" <madyn@...> wrote:
Never used it, so... wasn't available for what I was doing.

Harvey


On 9/19/2024 7:57 PM, Dave McGuire wrote:

Emacs!

On 9/19/24 19:53, Harvey White wrote:
Unless you like VHDL...... <grin>

Harvey


On 9/19/2024 5:29 PM, Dave Daniel wrote:
Add in SystemVerilog if one is contemplating FPGA/ASIC work.

DaveD
KC0WJN

Thanks for all the fish.
==============================
All spelling mistakes are the responsibilty of the reader (Rick
Renz, STK, ca. 1994)
==============================

On Sep 19, 2024, at 16:03, Roy Thistle via groups.io
<roy.thistle@...> wrote:

?
On Thu, Sep 19, 2024 at 09:11 AM, Frank Mashockie wrote:

I've been considering going into an online master's program for
EE.

If your boss is not paying for it... It's expensive.
2 to 3 years to complete, on average.
Say 50,000USD total cost, on average... and up... for many good US
schools.
Georgia Tech is... about the lowest cost... 10,000USD total cost.
Everyone is different... but IMO... the average person... depending
on which specialty they want... needs to have a strong background in
calculus... as in vector, complex, and differential equations...
linear algebra... numerical methods... statistics.
Computer science skills are required too.
Programming in Python or C
Simulations in software packages like Pspice
HDL like Verilog, or VHDL
Not to mention a strong background in
circuit analysis
devices
probably other stuff I forgot too.



--
Dave McGuire, AK4HZ
New Kensington, PA








--
Dave McGuire, AK4HZ
New Kensington, PA





Re: Introduction

 

Was, but no longer?

Though the "editor wars" are fun, I actually use both vi and emacs regularly. I'm going to make a quick edit /etc/resolv.conf, I use vi. If I'm sitting down for a ten-hour coding session, I use emacs.

-Dave

On 9/20/24 08:26, n4buq wrote:
I was a vi man myself.
Barry - N4BUQ

'Twas a joke. But emacs has to be one of the most widely-ported pieces of
software in history.

-Dave

On September 19, 2024 8:23:47 PM "Harvey White" <madyn@...> wrote:
Never used it, so... wasn't available for what I was doing.

Harvey


On 9/19/2024 7:57 PM, Dave McGuire wrote:

Emacs!

On 9/19/24 19:53, Harvey White wrote:
Unless you like VHDL...... <grin>

Harvey


On 9/19/2024 5:29 PM, Dave Daniel wrote:
Add in SystemVerilog if one is contemplating FPGA/ASIC work.

DaveD
KC0WJN

Thanks for all the fish.
==============================
All spelling mistakes are the responsibilty of the reader (Rick
Renz, STK, ca. 1994)
==============================

On Sep 19, 2024, at 16:03, Roy Thistle via groups.io
<roy.thistle@...> wrote:

?
On Thu, Sep 19, 2024 at 09:11 AM, Frank Mashockie wrote:

I've been considering going into an online master's program for
EE.

If your boss is not paying for it... It's expensive.
2 to 3 years to complete, on average.
Say 50,000USD total cost, on average... and up... for many good US
schools.
Georgia Tech is... about the lowest cost... 10,000USD total cost.
Everyone is different... but IMO... the average person... depending
on which specialty they want... needs to have a strong background in
calculus... as in vector, complex, and differential equations...
linear algebra... numerical methods... statistics.
Computer science skills are required too.
Programming in Python or C
Simulations in software packages like Pspice
HDL like Verilog, or VHDL
Not to mention a strong background in
circuit analysis
devices
probably other stuff I forgot too.



--
Dave McGuire, AK4HZ
New Kensington, PA




--
Dave McGuire, AK4HZ
New Kensington, PA