Re: HP 8554B, no RF after first successful run...
Some analog VOMs put out enough current to fry a mixer diode.
toggle quoted message
Show quoted text
I did re-check, and I've since gotten more?problems in?this?area...? ? ? :-D? -10v supply is no longer happy..??
Lot of people saying it might be the mixer diodes, so I may check those w/ my old analog meter today after I look?
over MORE POWER SUPPLIES....? ??
Hi Bill,
?
When I first read your post I thought you did some very low frequency stuff.?
Actually you're referring to MHz (Megahertz), not mHz (Millihertz).
?
Since you left the unit running for a while until the fault condition appeared: did you re-check once it was cold again? Like after 24 hours?
?
cheers
Martin
|
Re: HP 8554B, no RF after first successful run...
I did re-check, and I've since gotten more?problems in?this?area...? ? ? :-D? -10v supply is no longer happy..?? Lot of people saying it might be the mixer diodes, so I may check those w/ my old analog meter today after I look? over MORE POWER SUPPLIES....? ??
Hi Bill,
?
When I first read your post I thought you did some very low frequency stuff.?
Actually you're referring to MHz (Megahertz), not mHz (Millihertz).
?
Since you left the unit running for a while until the fault condition appeared: did you re-check once it was cold again? Like after 24 hours?
?
cheers
Martin
|
....but the years are long.
I almost missed that. Another "like the hot kiss at the end of a wet fist" moment.
DaveD
KC0WJN
Thanks for all the fish.
==============================
All spelling mistakes are the responsibilty of the reader (Rick Renz, STK, ca. 1994)
==============================
toggle quoted message
Show quoted text
On Sep 21, 2024, at 09:58, Harvey White via groups.io <madyn@...> wrote:
?Art is long....
(apologies if I misremember that).
Harvey
On 9/21/2024 5:14 AM, David C. Partridge wrote:
Life is short.
-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Harvey White
Sent: 21 September 2024 00:44
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] Introduction
Lazarus Pascal, and no idea why they named it like that, their product picture is a cheetah.
Maybe one of the designers is a Howard?
Harvey
On 9/20/2024 6:50 PM, Dave Daniel wrote:
A longer reply is due.
BUT ... "Lazarus", as in RAH's "Lazarus Long"?
DaveD
KC0WJN
Thanks for all the fish.
==============================
All spelling mistakes are the responsibilty of the reader (Rick Renz,
STK, ca. 1994) ==============================
On Sep 20, 2024, at 18:36, Harvey White via groups.io <madyn@...> wrote:
?Pascal became windows pascal, which went nowhere, and was paralled by free pascal, which morphed in a kind of parallel development into Lazarus Pascal. That has pretty much all that visual C has, or perhaps had. The Borland (pascal) version became Delphi and became an egregiously for Profit version. Lazarus is free and object oriented too.
Delphi is object oriented. So is Lazarus.
There was a language called PLM-86 (intel) that I used for a good while, but not Object Oriented Programming (OOP).
I did C, then when I went from the 6502 (assembly only or tiny forth), then C (AVR), then finally C++ when I got into the ARM (STMicro) world. I have a graphics driver setup that is written in C++, and the hardware driver structure is in C (ST Micro) with a C++ overlay. FreeRTOS gets thrown in there, too.
Depends on what you're doing, but for some things, C++ and OOP make a lot of sense.
Harvey
On 9/20/2024 6:09 PM, Dave Daniel wrote:
Yeah, Modula-2 never caught on. Neither did Pascal, actually. I did all my Applied Math programming in FORTRAN (calculating the zeroes of Bessel functions as a homework assignment at ~0600 on a weekday morning and getting a 'phone call from the data center sysadmin: "Dave, what are you running? You are using 98% of the CPU"). Later, of course, at work, everything was done using C or assembler. C++ came later; my only experience with OOP has been with SystemVerilog.
DaveD
KC0WJN
Thanks for all the fish.
==============================
All spelling mistakes are the responsibilty of the reader (Rick
Renz, STK, ca. 1994) ==============================
On Sep 20, 2024, at 15:08, Harvey White via groups.io <madyn@...> wrote: ?I never found any Modula-2 compilers. I looked at what was out there (circa 1980 or so) and I got what would work on a PC for free.
Strictly low budget (and still, in a way, am).
Harvey
On 9/20/2024 2:45 PM, Dave Daniel wrote:
Pascal was originally intended to be a "teaching" language only and was never intended to be used commercially. Modula-2 was supposed to fix that.
DaveD
KC0WJN
Thanks for all the fish.
==============================
All spelling mistakes are the responsibilty of the reader (Rick
Renz, STK, ca. 1994) ==============================
On Sep 20, 2024, at 13:44, Harvey White via groups.io <madyn@...> wrote: ?Nope, Borland Pascal, then Delphi.
It is possible to break the linker in Borland Pascal.
Harvey
On 9/20/2024 12:36 PM, Dave Daniel wrote:
Pascal? Did you ever write code in Niklaus Wirth's Modula-2?
DaveD
KC0WJN
Thanks for all the fish.
==============================
All spelling mistakes are the responsibilty of the reader (Rick
Renz, STK, ca. 1994) ==============================
On Sep 20, 2024, at 09:52, Harvey White via groups.io <madyn@...> wrote: ?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
|
Oh the damage I have done with vi! I am an emacs guy, and have the emacs mode-less editor model permanently seared into my brain... Invariably, while using vi, I will forget that I am in command mode, and will touch type a bunch of text, at a furious rate, into being some random command. I won't notice what I have done, until one of my random text/commands honks off vi, and causes it to issue stream of beeps in complaint. When I look up at the screen, I will see that I have blown away a thousand lines of my code, started a few new processes, opened three or four spurious command line windows, and condemned myself to a half day's trying to fix the damage done... Early in my career, I found jove, which stands for (Jonathan's Own Version of Emacs). Jove was written by Jonathan Payne when he was a high school student, and I have ported it to every machine I have ever worked with, unix, msdos, or windows. Now a days, jove is in the debian linux repositories, so it too is available everywhere in linux. Jove is a tiny fraction of the size of vi, or emacs, and can do anything vi can do. I quickly install it on every machine I use and ditch vi. Once, as the sole user, I took down a customer's home grown 68000 based machine, with its home grown port of unix, while I was using it as a development system... I am told, simply by using jove. It took the guy that did the original unix porting a weekend to reassemble the system disk, and bring the machine back up. He forbade me from using jove on his machine, while being totally deaf to my protestations that if a user process can damage a unix system, there is a far bigger problem that needs fixing, than what the user was running... So, I was stuck using vi. About mid week after he banished me to vi, I crashed his machine down again, whilst using vi. This time, it took him a full week to put his machine back together... with some rumblings about my now being responsible for backing up his machine. He also decided that the problem was really me, so he banished me to using a Sun Workstation... -Chuck Harris On Fri, 20 Sep 2024 11:31:17 -0400 "Dave Daniel" <kc0wjn@...> wrote: 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
|
Art is long....
(apologies if I misremember that).
Harvey
toggle quoted message
Show quoted text
On 9/21/2024 5:14 AM, David C. Partridge wrote: Life is short.
-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Harvey White
Sent: 21 September 2024 00:44
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] Introduction
Lazarus Pascal, and no idea why they named it like that, their product picture is a cheetah.
Maybe one of the designers is a Howard?
Harvey
On 9/20/2024 6:50 PM, Dave Daniel wrote:
A longer reply is due.
BUT ... "Lazarus", as in RAH's "Lazarus Long"?
DaveD
KC0WJN
Thanks for all the fish.
==============================
All spelling mistakes are the responsibilty of the reader (Rick Renz,
STK, ca. 1994) ==============================
On Sep 20, 2024, at 18:36, Harvey White via groups.io <madyn@...> wrote:
?Pascal became windows pascal, which went nowhere, and was paralled by free pascal, which morphed in a kind of parallel development into Lazarus Pascal. That has pretty much all that visual C has, or perhaps had. The Borland (pascal) version became Delphi and became an egregiously for Profit version. Lazarus is free and object oriented too.
Delphi is object oriented. So is Lazarus.
There was a language called PLM-86 (intel) that I used for a good while, but not Object Oriented Programming (OOP).
I did C, then when I went from the 6502 (assembly only or tiny forth), then C (AVR), then finally C++ when I got into the ARM (STMicro) world. I have a graphics driver setup that is written in C++, and the hardware driver structure is in C (ST Micro) with a C++ overlay. FreeRTOS gets thrown in there, too.
Depends on what you're doing, but for some things, C++ and OOP make a lot of sense.
Harvey
On 9/20/2024 6:09 PM, Dave Daniel wrote:
Yeah, Modula-2 never caught on. Neither did Pascal, actually. I did all my Applied Math programming in FORTRAN (calculating the zeroes of Bessel functions as a homework assignment at ~0600 on a weekday morning and getting a 'phone call from the data center sysadmin: "Dave, what are you running? You are using 98% of the CPU"). Later, of course, at work, everything was done using C or assembler. C++ came later; my only experience with OOP has been with SystemVerilog.
DaveD
KC0WJN
Thanks for all the fish.
==============================
All spelling mistakes are the responsibilty of the reader (Rick
Renz, STK, ca. 1994) ==============================
On Sep 20, 2024, at 15:08, Harvey White via groups.io <madyn@...> wrote: ?I never found any Modula-2 compilers. I looked at what was out there (circa 1980 or so) and I got what would work on a PC for free.
Strictly low budget (and still, in a way, am).
Harvey
On 9/20/2024 2:45 PM, Dave Daniel wrote:
Pascal was originally intended to be a "teaching" language only and was never intended to be used commercially. Modula-2 was supposed to fix that.
DaveD
KC0WJN
Thanks for all the fish.
==============================
All spelling mistakes are the responsibilty of the reader (Rick
Renz, STK, ca. 1994) ==============================
On Sep 20, 2024, at 13:44, Harvey White via groups.io <madyn@...> wrote: ?Nope, Borland Pascal, then Delphi.
It is possible to break the linker in Borland Pascal.
Harvey
On 9/20/2024 12:36 PM, Dave Daniel wrote:
Pascal? Did you ever write code in Niklaus Wirth's Modula-2?
DaveD
KC0WJN
Thanks for all the fish.
==============================
All spelling mistakes are the responsibilty of the reader (Rick
Renz, STK, ca. 1994) ==============================
On Sep 20, 2024, at 09:52, Harvey White via groups.io <madyn@...> wrote: ?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
|
I'd been using it for the last fifteen years or so.
I dropped it for several reasons:
1. I think I remember running into some difficult to fix errors on
their end
2. The code became less useful as I started using C++ more and more.
3. I could not transfer the pascal code from there to an embedded
processor.
4. Making my own components never quite worked well enough. (I do
programmed arrays of stuff)
5. exactly like C++, the button class is very limited, made my own from
a panel.
So I'm doing quite similar projects in "Embarcadero" C++, having tried Microsoft VC (and not comprehending the startup menu because they have different names for everything).? Tried Eclipse C (no drag and drop for the UI).? Tried some of the commercial graphics products with an experimenter license, couldn't get them to work (inadequate documention at critical points).? Borland C++ (Embarcadero) seemed the only thing left. <sigh>.
I did get a complete application written in it with a decent enough repeatable UI (avoid templates, they refer back to the original code with links regardless of what they say).? So I'll stick with that for a while.
Harvey
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On 9/21/2024 5:10 AM, Dave_G0WBX via groups.io wrote: Re:-
From: Harvey White <mailto:madyn@...?subject=Re:%20Introduction>
Date: Fri, 20 Sep 2024 17:44:05 GMT
Nope, Borland Pascal, then Delphi.
It is possible to break the linker in Borland Pascal.
Harvey
Have you looked at ?
Largely cross platform, and fairly Delphi compatible too.
Even sporting a Delphi project import function, that "mostly" works, but usually needs some code fiddling in respect to any serial I/O or Networking.
Dave B (UK)
--
Created on and sent from a Unix like PC running and using open source software:
|
Re: GPIB software: Prologix and Python
Given the code example friendly issued by Chuck I could not
resist and spend a couple of hours to test it with my HP437B power
meter. The result is not A-level programming but just a script
that works. I have not used my Prologix GPIB adapter for many
years. The advantage over the HP82357 is that you have more
control over the GPIB lines, if you want. The HP adapter seems (much) faster to me.
Use it as you wish.
Cheers,
Harke
# try out some gpib data collection using the Prologix gpib-usb controller
# Chuck Harris
# Harke Smits
# Test for HP437B power meter @ GPIB address 3
# serial data format: bytes....----> str.encode("..")
# Sept 2024
import serial
import time
def gpib_init():
ser.write(str.encode("++mode 1\r")) # Controller mode
time.sleep(0.1)
ser.write(str.encode("++ifc\r")) # assert IFC line
time.sleep(0.1)
ser.write(str.encode("++auto 0\r")) #
time.sleep(0.1)
ser.write(str.encode("++eoi 0\r")) # disable EOI assertion
time.sleep(0.1)
def gpib_read(addr):
ser.write(str.encode("++addr " + str(addr) + "\r"))
time.sleep(0.1)
ser.write(str.encode("++read eoi\r"))
return ser.readline().strip()
def gpib_write(addr,gpibstr):
ser.write(str.encode("++addr " + str(addr) + "\r"))
time.sleep(0.1)
ser.write(str.encode(gpibstr + "\r"))
def check_srq():
srq = False
ser.write(str.encode("++srq\r"))
srq = (int(ser.readline()) == 1)
return srq
#
# test program...
#
ser = serial.Serial('COM4',rtscts=0,timeout=1) # verify COM number
gpib_address = 3 # HP437B power meter default GPIB address
ser.write(str.encode("++ver\r")) # Prologix version
print(f"Prologix controller version: {ser.readline().strip()}")
gpib_init()
gpib_write(gpib_address,"*RST\r")
time.sleep(0.5)
gpib_write(gpib_address,"IDN?\r")
print("ID = " + str(gpib_read(gpib_address)) + "\r")
gpib_write(gpib_address,"PR\r") # Preset cmd
time.sleep(0.1)
gpib_write(gpib_address,"CSZE\r") # Zero command
time.sleep(0.1)
print(f"Zeroing power meter")
while not check_srq():
print(".", end=" ", flush=True)
time.sleep(0.2)
gpib_write(gpib_address,"CSCL100%\r") # Calibrate command, adjust cal fac if necessary
time.sleep(0.1)
print(f"\r\nCalibrating power meter")
while not check_srq():
print(".", end=" ", flush=True)
time.sleep(0.2)
time.sleep(5) # PWM needs time to autorange
gpib_write(gpib_address,"ERR?\r") # check the error code: zero is all ok
print(f"\r\nError code line 71: {int(gpib_read(gpib_address))}")
value = str(gpib_read(gpib_address).strip())
print(f"RF power: {value} dBm.\r")
print(f"end")
|
HP 8566B Not Showing Any Signal
Hello All!
?
This is my first post here, and I'm super glad to have found this group. I'm working on an HP 8566B that I purchased locally in Dallas.
?
When I got the unit, the only issue I thought I had was an occasional YTO unlock light. Now, as I’ve been playing with it and trying to test signals into the front of the unit, I find that the CAL signal does not show up on the RF input.
Tonight, I really got into it thinking that the attenuator must be at fault based on some YouTube videos I’ve watched showing similar symptoms. Attached is a video showing some of the things that I’m seeing. If you can share any light on any of this, I’d be super grateful.
?
?
After I film this video, I went ahead and torn into it and removed the attenuator block. When I removed the attenuator block, I noticed that the press on connector that connects the attenuator to the motherboard had a pin that was flattened and never made contact in the female header. I assumed I had found my problem tonight so I straightened the pin out and carefully reassembled. It fired it up and I have the exact same issues as before. No matter what amount of signal I run into the input analyzer I’m not able to see it.
The frustrating thing is that yesterday when I was playing with it I was able to see the signal when I ran the reference level down to -27 DB. Luckily I have a unit here so tomorrow night time allowing, I’ll try to pull either the entire YIG sub assembly out and swap that in or merely just swap out the continuator.
Thanks again!
Brad Jackson
|
On 9/21/24 02:37, Tony Goodhew wrote: I'm on vacation near Shell Knob in Missouri and I'm trying to catch up with this. mammoth thread...
Dave,
I feel the need to come clean with everyone that I was the PM who killed EMACS emulation in Visual Studio back in the early 2010s.
In my defense, that usage data showed almost zero people used it and the maintenance cost exceeded that.
To all the EMACS adherents out there I apologize, No impact here; I'd not touch Visual anything with a ten-foot pole. I run *emacs*. Near-zero usage for such an emulation is not surprising at all. People who want an emacs emulation probably want it because they've run emacs in the past, and such people are probably still running emacs. Further, most Windows people I've met tend not to dig around and explore things, they just do what they're told. If you guys didn't tell them "hey, try emacs mode!" they probably didn't. -Dave -- Dave McGuire, AK4HZ New Kensington, PA
|
On 9/21/24 04:56, Dave Daniel wrote: LOL. You never worked at Documation. We had a lot of fun doing weird ...uh... stuff there. It was kind of like being professional adolescents. When Storage Technology bought Documation, we all had to "grow up". But that was in the late 70s and early 80s. Haa, no I never worked there. But I was in the startup company world for a long time; it sounds like the attitudes are similar. :) But even there, we never wire-wrapped in humor. ;) We do have a few Documation card readers at the museum. None working yet; we must fabricate new rollers for them. It was during my stay at Doc that I wirewrapped the only card that I ever built that worked flawlessly without needing rework - a 128 kB memory card, using Intel 2 kB memory ICs, IIRC. Nice! -Dave -- Dave McGuire, AK4HZ New Kensington, PA
|
Re: HP8563E strange behavior
I should add that there are no visible error notifications on the screen.
|
Re: HP 8554B, no RF after first successful run...
Hi Bill,
?
When I first read your post I thought you did some very low frequency stuff.?
Actually you're referring to MHz (Megahertz), not mHz (Millihertz).
?
Since you left the unit running for a while until the fault condition appeared: did you re-check once it was cold again? Like after 24 hours?
?
cheers
Martin
|
Delphi was very popular in Europe, Germany especially.
There is also (previously? mentioned in another thread) EZGPIB, that is a Pascal based scripting system, for GPIB instrument/device control.
I believe that was probably created with Delphi.
Sadly it's author has passed, but his site lives on.
It's a Windows program, but will run in a guest VM on other OS's, if they can make USB peripherals available to the guest.? I've run it with NI-GPIB and common USB/Serial devices, running in a XP VM as a guest on Linux Mint in the past.
Regards.
Dave B (UK)
--
Created on and sent from a Unix like PC running and using open source software:
|
Life is short.
toggle quoted message
Show quoted text
-----Original Message----- From: [email protected] < [email protected]> On Behalf Of Harvey White Sent: 21 September 2024 00:44 To: [email protected]Subject: Re: [HP-Agilent-Keysight-equipment] Introduction Lazarus Pascal, and no idea why they named it like that, their product picture is a cheetah. Maybe one of the designers is a Howard? Harvey On 9/20/2024 6:50 PM, Dave Daniel wrote: A longer reply is due.
BUT ... "Lazarus", as in RAH's "Lazarus Long"?
DaveD
KC0WJN
Thanks for all the fish.
==============================
All spelling mistakes are the responsibilty of the reader (Rick Renz,
STK, ca. 1994) ==============================
On Sep 20, 2024, at 18:36, Harvey White via groups.io <madyn@...> wrote:
?Pascal became windows pascal, which went nowhere, and was paralled by free pascal, which morphed in a kind of parallel development into Lazarus Pascal. That has pretty much all that visual C has, or perhaps had. The Borland (pascal) version became Delphi and became an egregiously for Profit version. Lazarus is free and object oriented too.
Delphi is object oriented. So is Lazarus.
There was a language called PLM-86 (intel) that I used for a good while, but not Object Oriented Programming (OOP).
I did C, then when I went from the 6502 (assembly only or tiny forth), then C (AVR), then finally C++ when I got into the ARM (STMicro) world. I have a graphics driver setup that is written in C++, and the hardware driver structure is in C (ST Micro) with a C++ overlay. FreeRTOS gets thrown in there, too.
Depends on what you're doing, but for some things, C++ and OOP make a lot of sense.
Harvey
On 9/20/2024 6:09 PM, Dave Daniel wrote:
Yeah, Modula-2 never caught on. Neither did Pascal, actually. I did all my Applied Math programming in FORTRAN (calculating the zeroes of Bessel functions as a homework assignment at ~0600 on a weekday morning and getting a 'phone call from the data center sysadmin: "Dave, what are you running? You are using 98% of the CPU"). Later, of course, at work, everything was done using C or assembler. C++ came later; my only experience with OOP has been with SystemVerilog.
DaveD
KC0WJN
Thanks for all the fish.
==============================
All spelling mistakes are the responsibilty of the reader (Rick
Renz, STK, ca. 1994) ==============================
On Sep 20, 2024, at 15:08, Harvey White via groups.io <madyn@...> wrote: ?I never found any Modula-2 compilers. I looked at what was out there (circa 1980 or so) and I got what would work on a PC for free.
Strictly low budget (and still, in a way, am).
Harvey
On 9/20/2024 2:45 PM, Dave Daniel wrote:
Pascal was originally intended to be a "teaching" language only and was never intended to be used commercially. Modula-2 was supposed to fix that.
DaveD
KC0WJN
Thanks for all the fish.
==============================
All spelling mistakes are the responsibilty of the reader (Rick
Renz, STK, ca. 1994) ==============================
On Sep 20, 2024, at 13:44, Harvey White via groups.io <madyn@...> wrote: ?Nope, Borland Pascal, then Delphi.
It is possible to break the linker in Borland Pascal.
Harvey
On 9/20/2024 12:36 PM, Dave Daniel wrote:
Pascal? Did you ever write code in Niklaus Wirth's Modula-2?
DaveD
KC0WJN
Thanks for all the fish.
==============================
All spelling mistakes are the responsibilty of the reader (Rick
Renz, STK, ca. 1994) ==============================
On Sep 20, 2024, at 09:52, Harvey White via groups.io <madyn@...> wrote: ?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
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Re:-
From: Harvey
White
Date: Fri, 20 Sep 2024 17:44:05 GMT
Nope, Borland Pascal, then Delphi.
It is possible to break the linker in Borland Pascal.
Harvey
Have you looked at? ? ?
Largely cross platform, and fairly Delphi compatible too.
Even sporting a Delphi project import function, that "mostly"
works, but usually needs some code fiddling in respect to any
serial I/O or Networking.
Dave B (UK)
--
Created on and sent from a Unix like PC running and using open source software:
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Re: HP 141T Power Supply Help Needed
Does it "Bloom" with the trace intensity set to minimum?
It does look like the storage sub-system needs attention.
Dave B. (UK)
--
Created on and sent from a Unix like PC running and using open source software:
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Hi again.
Ah..? the "Large Scale Systems Museum".? That's been mentioned
before here.
If I'd known about that a few years ago, I'd have 110% definitely
visited at least once, as I used to visit a company at Souderton PA
on an irregular basis, & did the drive from there to Dayton for
the Hamfest back in 2015, with some (also licenced) colleagues who
had other business near Pittsburgh.? Resulting in a solo drive back
a few days later in some truly horrendous weather!? 4+ hours each
way.? (A bit like driving 200 miles on the M6 in the UK these days!)
I did get to spend half a day (not enough) at the Wright Patterson
Airospace Museum, another one I'd like to re-visit.
In an earlier past employment, where I was working with the DG
systems, one of my main functions was rebuilding crashed hard
drives.? Perkin Elmer, Diablo, Wangco, and the (then) advanced CDC
multi platter 96Meg units.? (I could lift one from the rack, onto
the bench back then, not now sadly!)
Full physical strip-downs and clean, then rebuild, purge and
re-align/calibrate, before thrashing the heck out of them with the
stressful (not just for the drive!) Random Read test.? Some drives
would have to be "secured" to the bench when that test was run, and
loose articles nearby removing.
We were even recovering some crashed heads with careful cleaning, if
they were just lightly damaged by accumulated debris.? Saved a ton
of money doing that...? Quite impressive how much physical
punishment some would take, then polish up like new and work just
fine afterwards.
(Plenty of "over qualified incompetent customer" stories accumulated
as a result of that work too!)
One of the few tasks, where no one really complained about the time
taken, as we found that the more care and time spent during the
rebuild and setup, the better they performed.? Even better,
enjoyable work as well.
I doubt very much I'll make it back to the US under my own steam
now.? Pitty, as I perhaps could help with your Tek 4014 problem, as
I also worked for Tek in the UK in the past, so those CRT storage
display systems I understand too.
Just a thought, do you home any of the DG Micro Nova systems?? That
were advertised as being "IBM PC Compatible" (with the 8086
co-processor card.)
Of course, by then, hard drives were mostly non-DIY fixable, sadly.
Regards to All.
Dave B (G8KBV)? Ex GPO Telecom, Tek', Finnigan MAT Ltd, Texscan, and
then way too long at AR UK.
--
Created on and sent from a Unix like PC running and using open source software:
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LOL. You never worked at Documation. We had a lot of fun doing weird ...uh... stuff there. It was kind of like being professional adolescents. When Storage Technology bought Documation, we all had to "grow up". But that was in the late 70s and early 80s.
It was during my stay at Doc that I wirewrapped the only card that I ever built that worked flawlessly without needing rework - a 128 kB memory card, using Intel 2 kB memory ICs, IIRC.
DaveD
KC0WJN
Thanks for all the fish.
==============================
All spelling mistakes are the responsibilty of the reader (Rick Renz, STK, ca. 1994)
==============================
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On Sep 20, 2024, at 19:29, Dave McGuire via groups.io <mcguire@...> wrote:
?On 9/20/24 17:27, Dave Daniel wrote:
I had a wirewrapped Apple motherboard. I built a Heathkit H-something monitor and used that system for a couple of years. The Apple motherboard was wirewrapped as a sort of joke or something. I ended up with it because no one else wanted it. Probably worth a good bit now.
I've never known anyone to wire-wrap anything as a joke. That's...just weird.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
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Erick thank you but unfortunately I could not justify that sort of expense so I have been collecting the parts for many years Regards Paul South coast UK ?
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Am 21.09.2024 um 01:17 schrieb ed
breya:
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I recall seeing some HP8620 plug-ins over the years, that
were labeled as Hughes, but none contained an oscillator as far
as I could see. They had connectors on the front for
control/drive cables that went to various external
waveguide-mounted oscillators, which were presumably separated
from the plug-ins and long gone.
?
A quick look online for "hp8620 hughes" showed an example on
ebay:
?
?
I don't know who actually built them but they look like sort
of commercial, low volume custom units, including the plug-in
and the scale. I've never knowingly seen any of the oscillators.
You can see on the back of the plug-in a line power in and out,
which probably ran the power supply for the oscillator via the
RF ON/OFF switch. You can also see that they were built from
parts or sacrificed plug-ins, not custom made by HP - they would
have looked much nicer if so.
?
Ed
?
?
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Brad Jackson
Dave McGuire
Martin
David C. Partridge
Paul Bicknell
