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Re: WAVEFORM AND SIGNAL ANALYSIS

 

He is posting copies of that message to other lists as well. It is becoming apparent that he is either a spammer trying to get un-moderated, or an AI that will probably become a spammer. He's on a bunch of different lists talking about barely-relevant things in somewhat strangely-worded ways.

Also, as a well-known topic nazi, I'm surprised you didn't have a problem with his post. ;)

-Dave

On 9/14/20 10:39 AM, Mike Feher wrote:
I do not get it. What is wrong or offensive of the post? The link was to a basic article and a scope. Regards ¨C Mike
Mike B. Feher, N4FS
89 Arnold Blvd.
Howell NJ 07731
848-245-9115
*From:* [email protected] <[email protected]> *On Behalf Of *Glen Slick
*Sent:* Monday, September 14, 2020 9:48 AM
*To:* [email protected]
*Subject:* Re: [HP-Agilent-Keysight-equipment] WAVEFORM AND SIGNAL ANALYSIS
This is the behavior that recently led to calls for this poster to be banned as a nonsense spam poster. A moderator should just go ahead and ban this poster now without further discussion on the list.
On Mon, Sep 14, 2020, 5:00 AM Carl Moon via groups.io <> <carl.moon@... <mailto:[email protected]>> wrote:
As we all know, nearly all consumer products today have electronic
circuits. Whether a product is simple or complex, if it includes
electronic components, the design, verification, and debugging
process requires an oscilloscope to analyze the numerous electrical
signals that make the product come to life.
--
Dave McGuire, AK4HZ
New Kensington, PA
Re: WAVEFORM AND SIGNAL ANALYSIS

 

¿ªÔÆÌåÓý

I do not get it. What is wrong or offensive of the post? The link was to a basic article and a scope. Regards ¨C Mike

?

Mike B. Feher, N4FS

89 Arnold Blvd.

Howell NJ 07731

848-245-9115

?

From: [email protected] <[email protected]> On Behalf Of Glen Slick
Sent: Monday, September 14, 2020 9:48 AM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] WAVEFORM AND SIGNAL ANALYSIS

?

This is the behavior that recently led to calls for this poster to be banned as a nonsense spam poster. A moderator should just go ahead and ban this poster now without further discussion on the list.

?

On Mon, Sep 14, 2020, 5:00 AM Carl Moon via <carl.moon=[email protected]> wrote:

As we all know, nearly all consumer products today have electronic circuits. Whether a product is simple or complex, if it includes electronic components, the design, verification, and debugging process requires an oscilloscope to analyze the numerous electrical signals that make the product come to life.?
Re: WAVEFORM AND SIGNAL ANALYSIS

 

I second that


On Mon, Sep 14, 2020 at 09:47 AM, Glen Slick wrote:
This is the behavior that recently led to calls for this poster to be banned as a nonsense spam poster. A moderator should just go ahead and ban this poster now without further discussion on the list.


On Mon, Sep 14, 2020, 5:00 AM Carl Moon via <carl.moon=[email protected]> wrote:

As we all know, nearly all consumer products today have electronic circuits. Whether a product is simple or complex, if it includes electronic components, the design, verification, and debugging process requires an oscilloscope to analyze the numerous electrical signals that make the product come to life.?

This article explains waveform and signal analysis.

< spam link deleted? >

?

?
Re: WAVEFORM AND SIGNAL ANALYSIS

 

On Mon, Sep 14, 2020 at 03:47 PM, Glen Slick wrote:
This is the behavior that recently led to calls for this poster to be banned as a nonsense spam poster. A moderator should just go ahead and ban this poster now without further discussion on the list.
A few hours ago, I've sent a message regarding this issue to David Kirkby (Moderator), also referring to poster's behavior on Tekscopes and received a response. No further action necessary I hope.

Raymond
Re: WAVEFORM AND SIGNAL ANALYSIS

 

This is the behavior that recently led to calls for this poster to be banned as a nonsense spam poster. A moderator should just go ahead and ban this poster now without further discussion on the list.


On Mon, Sep 14, 2020, 5:00 AM Carl Moon via <carl.moon=[email protected]> wrote:

As we all know, nearly all consumer products today have electronic circuits. Whether a product is simple or complex, if it includes electronic components, the design, verification, and debugging process requires an oscilloscope to analyze the numerous electrical signals that make the product come to life.?

This article explains waveform and signal analysis.

< spam link deleted? >
WAVEFORM AND SIGNAL ANALYSIS

Carl Moon
 

As we all know, nearly all consumer products today have electronic circuits. Whether a product is simple or complex, if it includes electronic components, the design, verification, and debugging process requires an oscilloscope to analyze the numerous electrical signals that make the product come to life.?

This article explains waveform and signal analysis.



?
Re: HP 89410A / 89441A internal 3 1/2 floppy replacement

 

Hi atc-HPequipgroup

I'll have to check what the original drives were in the 54624A and 16500C were to see if the pin outs are similar

I had purchased a GoTek floppy replacement in the hope that I could cut it about a bit to re-route some of the signals.?
The main sticking point is that the drive +5V supply is delivered on pins 7,9 and 11 of the ribbon cable.?
The GoTek PCB is double sided with ground plane and through plating.? It returns these pins directly to the ground plane? To isolate pins 7, 9 and 11 I would have to remove the 34 pin header and then cut around the ground plane on both sides.
Alternately, I could isolate the 3 pins in the ribbon cable and route them separately?
Neither of these options seemed tidy to me - hence looking at the possibility of using an alternate floppy drive

The Sony MPF920-E/131 seems to come pretty close to what is needed with pins 5, 7, 9 and 11 on a? separate trace that can either be jumpered to ground (standard configuration) or to +5V

I am going to have a try at getting this drive to hook up - if not then I will either modify a GoTek board or lay out an alternate version of the GoTek with the necessary PSU connections.

Are there any other 89410A / 89441A users on the group that would find an instrument specific version of the GoTek / HxC hardware useful?

Peter
Re: hp 5392A YIG

 

MY plug in has option 002 which is the 70 db attenuator

-----Original Message-----
From: [email protected]
<[email protected]> On Behalf Of Don Bitters via
groups.io
Sent: Monday, 14 September 2020 4:44 PM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] hp 5392A YIG

Also check the 83592A for options. There is a high power option for this
series. It is option 01 or 02. Check the manual. I believe the std unit
has a max output of +8 dBm, but the output amplitude is band and frequency
dependent Check the manual.
Don Bitters
Re: hp 5392A YIG

 

Hi Don,
I checked the yig both into a power meter and a spectrum analyzer
when directly checking the yig output so it should have been terminated in
50 ohms at least for the power meter.
I tried the external levelling with no change and also I have checked the
voltages across the detectors and they are ok
You are correct with regard to the yig frequency range and it does multiply
for the higher ranges and down converts with a fixed osc for band 0 (.01ghz
to 2.4 ghz)
The output frequency is roughly correct as per the setting just that I
cannot control the output power, that is why I first thought I had an A4 agc
problem, definitely not the A4 cards as I have tried 3 in total to no
effect.
Ken Goodhew.

-----Original Message-----
From: [email protected]
<[email protected]> On Behalf Of Don Bitters via
groups.io
Sent: Monday, 14 September 2020 4:38 PM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] hp 5392A YIG

The 83592A has an internal XTAL detector for leveling, but also allows for
external leveling with either a power meter or external XTAL detector (so
you can be leveled at the end of a cable and power splitter). Measuring
directly at the output of the YIG is a little tricky and problematic. I
would measure it there with a known flat response 6dB attenuator and a power
meter. The YIG wants to see a 50 ohm load to give proper output. If I
recall correctly the YIG for this unit is a 2-8 GHz fundamental and uses a
YIG multiplier to get to the higher frequencies. The rear panel frequency
output at 0dB is a coupled fundamental frequency output (2-8GHz). Probably
a Krytar directional coupler Do look at the 83592A frequency response
adjustment procedure in the manual, after you have at least checked the
frequency tune procedure.
Don Bitters
Re: hp 5392A YIG

 

Also check the 83592A for options. There is a high power option for this series. It is option 01 or 02. Check the manual. I believe the std unit has a max output of +8 dBm, but the output amplitude is band and frequency dependent Check the manual.
Don Bitters
Re: hp 5392A YIG

 

The 83592A has an internal XTAL detector for leveling, but also allows for external leveling with either a power meter or external XTAL detector (so you can be leveled at the end of a cable and power splitter). Measuring directly at the output of the YIG is a little tricky and problematic. I would measure it there with a known flat response 6dB attenuator and a power meter. The YIG wants to see a 50 ohm load to give proper output. If I recall correctly the YIG for this unit is a 2-8 GHz fundamental and uses a YIG multiplier to get to the higher frequencies. The rear panel frequency output at 0dB is a coupled fundamental frequency output (2-8GHz). Probably a Krytar directional coupler
Do look at the 83592A frequency response adjustment procedure in the manual, after you have at least checked the frequency tune procedure.
Don Bitters
Re: hp 5392A YIG

 

Hi gang
My problem is that the yig output power varies from approx 2db to 12 db over its frequency range and at one point in the range it stops altogether and puts out about 2 db again but at two different frequencies
The nominal output of the yig is supposed to be 14 db
The aux output on the rear of the 83592a is supposed to be 0 db but mine is 10 db?

The yig power was measured directly out of the yig btw
This problem manifested itself as uncontrolled max output power which is normally associated with the A4 card or the agc loop but after weeks of searching and probing including a complete set of replacement plug in cards i am no further ahead other than the low power output if the yig
Maybe the agc is turning the wick up to compensate for the low yig output , maybe i have two faults but if and when i replace the yig i will know
Any suggestions welcome


From Ken Goodhew

On 14 Sep 2020, at 1:26 pm, Harvey White <madyn@...> wrote:

?However, I've heard the term used in oscillators, where the oscillator puts out a damped sinewave rather than a continuous one. Feedback situation or bad voltages for that situation.

Harvey


On 9/13/2020 11:11 PM, Don Bitters via groups.io wrote:
The term is ¡°squegging¡±. The YIG actually switches modes, causing it to put more power into side bands than the fundamental frequency. You will see the fundamental dip in voltage/power and sometimes see some frequency ¡°pull¡±. Adjusting the bias to reduce the ¡°squegging¡± will generally solve the problem. On a weak YIG you may not be able to get the needed YIG power out and not have ¡°squegging¡±. Then it is just a matter of doing your best to have no ¡°squegging¡± and the best achievable power out - even if not up to the max spec¡¯d output. Otherwise you will have to replace the YIG.
Squegging is unique to YIG¡¯s.
Don Bitters
Re: Need support for HP-3586B and HP-3336B RPGs

 

¿ªÔÆÌåÓý

Hi guys-
attached is the tec brief? on the RPG, I knew I had it somewhere....I have one that is not working correctly either.....I need time! other things are getting in the way.
¸é±ð²Ô¨¦±ð



On 9/13/20 6:26 PM, Jim Sorenson wrote:

Hi Dan,?

Thank you very kindly for offer. If I need to take you up on that perhaps you could use boards or parts out my 3586 spares unit in return. In any case if you ever need a part or board, just email me.?

Since you have an RPG (sound like some military ordnance) could you possibly take a look at it and? pass on the following info to me.?

I would like to confirm the colors of the 4 wires for pins 1 - 4 from your unit there.?

What I've found in the doc is:?



I show the black wire as pin 1 (5.5 volts) and the ground as pin 5 (red - white). This does not make sense to me.?

The RPG of the 3336B is working in both directions but frequency goes up when knob turned to the left and vice versa. When I when I traded sides for RPG 1 and RPG 2, it would not work at all. Something still wrong there.?

Next time I WILL take and keep notes.?

Thanks


HP-Bench-Briefs-1987-04-06.pdf
HP-Bench-Briefs-1987-04-06.pdf

Re: hp 5392A YIG

 

However, I've heard the term used in oscillators, where the oscillator puts out a damped sinewave rather than a continuous one.? Feedback situation or bad voltages for that situation.

Harvey

On 9/13/2020 11:11 PM, Don Bitters via groups.io wrote:
The term is ¡°squegging¡±. The YIG actually switches modes, causing it to put more power into side bands than the fundamental frequency. You will see the fundamental dip in voltage/power and sometimes see some frequency ¡°pull¡±. Adjusting the bias to reduce the ¡°squegging¡± will generally solve the problem. On a weak YIG you may not be able to get the needed YIG power out and not have ¡°squegging¡±. Then it is just a matter of doing your best to have no ¡°squegging¡± and the best achievable power out - even if not up to the max spec¡¯d output. Otherwise you will have to replace the YIG.
Squegging is unique to YIG¡¯s.
Don Bitters
Re: hp 5392A YIG

 

The term is ¡°squegging¡±. The YIG actually switches modes, causing it to put more power into side bands than the fundamental frequency. You will see the fundamental dip in voltage/power and sometimes see some frequency ¡°pull¡±. Adjusting the bias to reduce the ¡°squegging¡± will generally solve the problem. On a weak YIG you may not be able to get the needed YIG power out and not have ¡°squegging¡±. Then it is just a matter of doing your best to have no ¡°squegging¡± and the best achievable power out - even if not up to the max spec¡¯d output. Otherwise you will have to replace the YIG.
Squegging is unique to YIG¡¯s.
Don Bitters
Re: Need support for HP-3586B and HP-3336B RPGs

 

¿ªÔÆÌåÓý

If this is a more or less standard RPG, then there is a ground lead, a VCC lead (whatever it is), and two leads connected to the photocells.? The ground lead should stay constant, the VCC lead should also stay constant, but the two signal/photocell leads) should pulse up and down as you rotate the RPG.? Unless they've done something very odd, reversing the two photocell leads *ought* to reverse the direction.? (or so it says here)

Harvey.

On 9/13/2020 9:26 PM, Jim Sorenson wrote:

Hi Dan,?

Thank you very kindly for offer. If I need to take you up on that perhaps you could use boards or parts out my 3586 spares unit in return. In any case if you ever need a part or board, just email me.?

Since you have an RPG (sound like some military ordnance) could you possibly take a look at it and? pass on the following info to me.?

I would like to confirm the colors of the 4 wires for pins 1 - 4 from your unit there.?

What I've found in the doc is:?



I show the black wire as pin 1 (5.5 volts) and the ground as pin 5 (red - white). This does not make sense to me.?

The RPG of the 3336B is working in both directions but frequency goes up when knob turned to the left and vice versa. When I when I traded sides for RPG 1 and RPG 2, it would not work at all. Something still wrong there.?

Next time I WILL take and keep notes.?

Thanks
Re: Need support for HP-3586B and HP-3336B RPGs

 

Hi Dan,?

Thank you very kindly for offer. If I need to take you up on that perhaps you could use boards or parts out my 3586 spares unit in return. In any case if you ever need a part or board, just email me.?

Since you have an RPG (sound like some military ordnance) could you possibly take a look at it and? pass on the following info to me.?

I would like to confirm the colors of the 4 wires for pins 1 - 4 from your unit there.?

What I've found in the doc is:?



I show the black wire as pin 1 (5.5 volts) and the ground as pin 5 (red - white). This does not make sense to me.?

The RPG of the 3336B is working in both directions but frequency goes up when knob turned to the left and vice versa. When I when I traded sides for RPG 1 and RPG 2, it would not work at all. Something still wrong there.?

Next time I WILL take and keep notes.?

Thanks
Re: Need support for HP-3586B and HP-3336B RPGs

 

Thanks Joe,?

I've finally pulled down the schematic and after what seemed like years, found the RPG on 3586 which shows the following:



That's pretty clear now. I'm going to put the whole thing away until tomorrow. I know that KO4BB has always been a terrific site for the HP-3586. Thanks again for the schematic source tip.
Re: Agilent 54831M

Bostonman
 

Just a quick update.

Last week I removed the cover to look around and saw (what I thought) was the cable to a SSD, but it seemed connected in a haphazard way.

Today I powered it for the first time since placing the cover on. The boot up beeping could be heard, however, the screen remained white. Also, although I'm uncertain whether this was the case before, channels 1 and 4 had the 1M and 50ohm illuminated whereas channels 2 and 3 (the "bad" channels) didn't have anything lit.

I'm going to remove the cover and look at the cable that I touched to see if something got disconnected.

Also, as for what the scope displays when taking measurements in 50ohm mode (prior to the white screen issue), channels 2 and 3 (the "bad" channels) display a flat line as if nothing is connected to the inputs. Maybe, but I'm uncertain, the line bounces a bit when something is first connected. When in 1M mode, the channels work fine.

The only questionable anomalies I saw: on all channels, when I select auto measurement, and measure a square wave from a function generator, the horizontal portions of the wave are thick. I think if I take measurements after initial booting, the lines are thinner, but I can't say for sure at the moment. Also, the lease concerning issue, the square wave on the front of the scope (to calibrate the probe) isn't producing a signal.

As for the thicker horizontal lines as stated above, I've never used a high frequency, high sample rate scope, so maybe this is normal for such a scope. I'm use to Tektronix 100MHz scopes.
Re: OT (just a bit) - Centralab Steatite Switches

 

OK, Steatite switches. Sorry for the late entry. May I suggest for?anyone interested, or think they may need one, to email me off list for a 9 page illustrated pdf of all the rotary switches I have. This is not a business but I would appreciate postage and a small donation (to discourage the greedy who would take everything for free). Trades welcome. I often thought it would be nice to trade items that persons have hundreds of, say 9.1k resistors for 5.6k, or any other components.
I have many 1 pole 10 posn but the silver is badly tarnished on some. They come in at least three sizes so I need to know the screw spacing of the wafers and the shaft size.
a few bags like this
20200913_151219.jpg
I also have some PCB like material but may I suggest one of these. I have several NOS. (New Old Stock).
They are 4 pole adjustable up to 10 positions (I think)
20200913_144921.jpg


On Fri, Sep 11, 2020 at 5:14 PM n4buq <n4buq@...> wrote:
This is the range switch for a VTVM so I presume high impedance is needed.? Phenolic might work but then someone might go in there and spray it with "contact cleaner" and I don't think that would be good on phenolic.? Electroswitch has started making those wafers out of glass epoxy and I think that would be a reasonable substitute and I can find new, exact replacements.

Thanks,
Barry - N4BUQ

----- Original Message -----
> From: "Ed Breya via " <edbreya=[email protected]>
> To: [email protected]
> Sent: Friday, September 11, 2020 3:47:01 PM
> Subject: Re: [HP-Agilent-Keysight-equipment] OT (just a bit) - Centralab Steatite Switches
>
> Does it have to be the ceramic type wafer? You may find more options if
> phenolic is OK.
>
>
>
>



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