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RPG 5060-9444 (conversion LAMP to LED)

 

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Hi, just a story about HP/Agilent 5060-9444 5 VDC Rotary Pulse Generator RPG +, replace LAMP by LED.

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?

I had the opportunity to get an 8350B with an 83595A (0.01-26.5GHz). This device had to be stored for a few years. In short, I had to partially disassemble it to remove dust and some traces of corrosion. I changed the battery of course and fixed several problems like the front panel which was partially working. I had to do a complete alignment, now everything is OK.

The 83595A seemed to be in better shape, but the RPG was not working. I removed it from the module and opened it up...after examining the circuit, it was easy to see that the lamp was burned out. I studied the module and how it worked, so I tried a repair by replacing the lamp with an LED.

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I found that this little module was quite ingenious. All the parts are on the top of the PCB and underneath 2 photo detectors in a dark room, where there are two plastic sheets in the shape of a circle, a hole followed by another one on top translucent. A small metal piece bent at 45 degrees, serves as a support for the lamp but also as a reflector to direct the light through two tunnels to the photo detectors. The two tunnels have screws allowing them to partially obstruct the light, allowing the two circuits to be balanced. If the light intensity is sufficient, this will trigger the gate 7413 (Schmitt Trigger). When the light levels are balanced by the screws, the duration of the pulses, for a constant speed, should be approximately the same.

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Using an LED recovered from a defective LED bulb, which was the perfect size to fit and fill the rectangular area where the bulb was located, I was able to determine the LED current for minimum operation of the RPG. The currents were 7mA for one side, and 11 mA for the other. I tested up to 30 mA for proper operation. I reduced it to 20mA, found the resistance needed for this current in the LED at 5V. The LED dropped 2.721V. I balanced the circuit with the screws and closed everything. Now the RPG of my 83595A works correctly. I will just have to make the necessary alignments for optimal operation.

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?

-Yves

RPG.png
RPG schematic.PNG

Re: HP-8753E Options Activated

Lothar baier
 

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Now obviously agilent released the option codes , there is a guy who provides you with the option codes , all you need to provide is the serial#

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Sent from for Windows

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From: Bruce via groups.io
Sent: Monday, February 21, 2022 2:26 PM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP-8753E Options Activated

?

So where is the data you made public ??

Cheers

Bruce

Quoting Lothar baier <Lothar@...>:

> I figured this stuff out years ago on the 87xx as well as the?
> options on the 8360 and made it public, it cost me my job and I?
> nearly avoided a lawsuit from Agilent ?
> On Feb 21, 2022, at 13:26, Rich Miller via groups.io?
> <av8torrich@...> wrote:
>
> ? Hopefully someone can make use of this information. I found that?
> OPT 11 was involved by using 01 at that address. I also found that?
> using 01 addresses before the serial number would activate OPT10. I?
> did not get wise to the Fx Codes until Joe pointed them out to me.
>
> No worries about the flux, there is none left in the area. I used?
> lots of UltraSolve to clean the past flux I Utilize. This particular?
> flux is supposed to be safe if left, but I clean it anyways.
>
> On Feb 21, 2022, at 10:20 AM, Lothar@... wrote:
>
> ?The systematic is the same on pretty much all HP 8752/53/19/20/22?
> analyzers, you find the serial number and the 3 Fx codes are setting?
> the options!
> one word of caution though on the 8753E/ES CPU board, when removing?
> and resoldering the SMT eeprom
>? you need to clean up all flux residue throughly or you can get issues
>
>
>
>







?
Re: HP-8753E Options Activated

Lothar baier
 

¿ªÔÆÌåÓý

It was put on the yahoo groups back in 2001

?

Sent from for Windows

?

From: Bruce via groups.io
Sent: Monday, February 21, 2022 2:26 PM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP-8753E Options Activated

?

So where is the data you made public ??

Cheers

Bruce

Quoting Lothar baier <Lothar@...>:

> I figured this stuff out years ago on the 87xx as well as the?
> options on the 8360 and made it public, it cost me my job and I?
> nearly avoided a lawsuit from Agilent ?
> On Feb 21, 2022, at 13:26, Rich Miller via groups.io?
> <av8torrich@...> wrote:
>
> ? Hopefully someone can make use of this information. I found that?
> OPT 11 was involved by using 01 at that address. I also found that?
> using 01 addresses before the serial number would activate OPT10. I?
> did not get wise to the Fx Codes until Joe pointed them out to me.
>
> No worries about the flux, there is none left in the area. I used?
> lots of UltraSolve to clean the past flux I Utilize. This particular?
> flux is supposed to be safe if left, but I clean it anyways.
>
> On Feb 21, 2022, at 10:20 AM, Lothar@... wrote:
>
> ?The systematic is the same on pretty much all HP 8752/53/19/20/22?
> analyzers, you find the serial number and the 3 Fx codes are setting?
> the options!
> one word of caution though on the 8753E/ES CPU board, when removing?
> and resoldering the SMT eeprom
>? you need to clean up all flux residue throughly or you can get issues
>
>
>
>







?
Re: HP-8753E Options Activated

 

So where is the data you made public ??

Cheers

Bruce

Quoting Lothar baier <Lothar@...>:

I figured this stuff out years ago on the 87xx as well as the options on the 8360 and made it public, it cost me my job and I nearly avoided a lawsuit from Agilent ?
On Feb 21, 2022, at 13:26, Rich Miller via groups.io <av8torrich@...> wrote:

? Hopefully someone can make use of this information. I found that OPT 11 was involved by using 01 at that address. I also found that using 01 addresses before the serial number would activate OPT10. I did not get wise to the Fx Codes until Joe pointed them out to me.

No worries about the flux, there is none left in the area. I used lots of UltraSolve to clean the past flux I Utilize. This particular flux is supposed to be safe if left, but I clean it anyways.

On Feb 21, 2022, at 10:20 AM, Lothar@... wrote:

?The systematic is the same on pretty much all HP 8752/53/19/20/22 analyzers, you find the serial number and the 3 Fx codes are setting the options!
one word of caution though on the 8753E/ES CPU board, when removing and resoldering the SMT eeprom
you need to clean up all flux residue throughly or you can get issues
Re: HP-8753E Options Activated

[email protected]
 

¿ªÔÆÌåÓý

I figured this stuff out years ago on the 87xx as well as the options on the 8360 and made it public, it cost me my job and I nearly avoided a lawsuit from Agilent ?


On Feb 21, 2022, at 13:26, Rich Miller via groups.io <av8torrich@...> wrote:

? Hopefully someone can make use of this information. I found that OPT 11 was involved by using 01 at that address. I also found that using 01 addresses before the serial number would activate OPT10. I did not get wise to the Fx Codes until Joe pointed them out to me.?

No worries about the flux, there is none left in the area. I used lots of UltraSolve to clean the past flux I Utilize. This particular flux is supposed to be safe if left, but I clean it anyways. ?

On Feb 21, 2022, at 10:20 AM, Lothar@... wrote:

?The systematic is the same on pretty much all HP 8752/53/19/20/22 analyzers, you find the serial number and the 3 Fx codes are setting the options!
one word of caution though on the 8753E/ES CPU board, when removing and resoldering the SMT eeprom
?you need to clean up all flux residue throughly or you can get issues?

Re: HP-8753E Options Activated

 

¿ªÔÆÌåÓý

Hopefully someone can make use of this information. I found that OPT 11 was involved by using 01 at that address. I also found that using 01 addresses before the serial number would activate OPT10. I did not get wise to the Fx Codes until Joe pointed them out to me.?

No worries about the flux, there is none left in the area. I used lots of UltraSolve to clean the past flux I Utilize. This particular flux is supposed to be safe if left, but I clean it anyways. ?

On Feb 21, 2022, at 10:20 AM, Lothar@... wrote:

?The systematic is the same on pretty much all HP 8752/53/19/20/22 analyzers, you find the serial number and the 3 Fx codes are setting the options!
one word of caution though on the 8753E/ES CPU board, when removing and resoldering the SMT eeprom
?you need to clean up all flux residue throughly or you can get issues?

Re: HP 8662A Keycap "BACK SPACE" needed

 

Hello Peter,

I may have something, I have some parts of an old HP keyboard but I don't remember if it is from a 8662A

I will check tomorrow morning and will keep you informed

Best regards

eric F1GHB
HP 8662A Keycap "BACK SPACE" needed

 

I am looking for the BACK SPACE keycap for my 8662A signal generator.
Maybe someone has a parts machine.
I am located in Germany, but I have no problem paying for international shipping. Want to have it complete and original.
Thanks
Peter
Re: HP 14570A AC Power Switch

 

Thanks for the tip. I'll get the manual right now !
Joel Setton
HP8558B Versus HP182T Sweep Fail.

 


--

HP8558B Versus HP182T Sweep Fail.

Good year 2022 without the accursed bug.

Well there everyone

?

In April 2019 my HP8558B decided to let it do the sweep? Fig0 , I found that only with external sweep it worked, it was on the waiting list for a better analysis, however I was around the HP8116A and with external help I got there (well there Markl).

In December 2021, in a visual inspection of the HP8558B plugin, I found that some of the contacts (fingers) of the 4 switches were loose, and I thought it was here, and the novel that I summarize below began

Preliminary Notes: Understanding certain details implies access to the HP182T/C Service Manual.

I urge HP experts to speak up.

?

1st 2019 I lost the HP8558B scan Fig0

2nd 2021 I considered that the failure was due to lack of contact finger in the SW. Fig1 and Fig1.1 , ward work.

3rd mechanically fixing the fingers of the SW Fig2

4th Malfunction remains?

5th Test of the switches all OK, with the help of a kit adapted from the IC card HP10529-20005 Fig3 and fig4.

6th Why not use my HP180C+HP1802 and HP1821A that is stopped !! fig5 , because I haven't used it before ?

Test with the Main Frame HP180C and the HP8558B, after de-rusting the switches and adjusting, voil¨¢ HP8558B OK!!

7th Use 182T with HP1801 and HP1821 OFF, I confirm the failure is in the HP182T.

8th All voltages on HP182T OK.

9th Summary measurement of transistor and diode junctions (all?) OK

10? Measurement of HT -3KV ?? and 19KV ?? , result? +-2.9 and +-? 18KV, OK

10th Use of two 1V 100 Hz sine wave generators for input on the HP1801A and the EXT INPUT sweep on the 180C

11? Results in a distorted Lissajous image by pressing FIND BEAM Fig6

12th With Intensity CW almost at MAX. clear image Lissajous Fig7

13th In sweep INT values of UNBLANKING GATE board A7 pin14 is -0.2V should be -0.7V

14th Output on board A7 ALT TRIGGER pin13 for Plug-in not detected?

15th UNBLANKING SIGNAL output values also in A7 pin w4, is between +20 and +75V when it should be between +42 and +92V? DC values, and is not a square signal.

16th I'm in a fish situation with is tail in the mouth.

Best regards

Bem Hajam

PS: I am new in this site , missing photos .

Hern?ni Capela

Fig0.jpg
Fig1.1.jpg
Fig1.jpg
fig2.jpg
fig3.jpg
Fig4.jpg
Fig5.jpg
Fig6.jpg
Fig7.jpg

Re: WTD: Filter capacitors for 8662A PSU

 

I effusively vote for something akin to Gerald's solution.?

Replacing old failed capacitors with old not-yet-failed capacitors is not the best path forward IMHO. I always try to work out a solution using new capacitors, and (particularly?when working on instruments) pay attention not only to the usual metrics for replacement (capacitance, voltage, physical dimensions, ESR, etc.), but also to service life. After all, I'm repairing an instrument I'd like to have in service for at least as long as it's been since it left the factory.?

Shelf?life is also a factor to have in mind, particularly in case of finding NOS capacitors that may fit perfectly (at the surplus places out there), but may have been sitting for a very long time.?

Radu.?

On Mon, Feb 21, 2022 at 7:34 AM Bob Weiss <bobweiss1967@...> wrote:
One of them tests completely open, and the ESR on the other is several hundred ohms....

I have located a set of capacitors through another person on this list, so hopefully replacing them (and all the other smaller electrolytics in the power supply) gets my unit up and running again.

73,
Bob Weiss N2IXK

Re: HP 14570A AC Power Switch

 

Hi Joel,

?

Artek?Manuals has a high quality pdf of the operating and service manual with schematics for $7.50. As a very satisfied customer for the past many years I highly recommend Artek?Manuals!

?

Stan

?

-----Original Message-----
From: <[email protected]>
Sent: Feb 21, 2022 12:24 AM
To: <[email protected]>
Subject: [HP-Agilent-Keysight-equipment] HP 14570A AC Power Switch

?

Hello,

Has anyone heard about the HP 14570A ? This is not a well-known product, it is an AC Power Switch, made by the New Jersey Division (formerly Harrison Labs), and described with some detail in the December 1982 issue of HP Journal.
Would anyone have a manual or schematics for the 14570A ? I have not been able to locate it on the Web.

Thanks,

Joel Setton

?
How to find patents for HP equipment

 

I'm currently looking for any patents released for the HP 8662/3A,
mostly to determine if there's any information about the firmware that
will help in debugging a faulty DCU. HP released the source code for
other equipment (e.g., the 8510) in patents.

However, my difficulty in tracking down associated patents raises the
somewhat broader question of how to reliably find patents for
devices. Currently my methods feel a bit imprecise: I go to
patents.google.com and set the patent office and language, and the
assignee to "Hewlett-Packard Company". Then, I try to determine when the
instrument was released and set the filing date range for several years
before and after this date. I also don't have a robust way currently to
determine the date the instrument was released. However, in this case
the February 1981 Journal featured the HP 8662A, so that's the date I'm
searching around. Finally, I add search terms such as "signal generator"
or "synthesized signal generator" to narrow the results.

This method will still leave 100+ entries to sift through. Moreover,
it's not always entirely trivial to determine which patents are
associated with a particular instrument. For instance, I found
US4323959, which I believe applies to the 8662A. However, this required
knowing that the 8662/3 use a switching power supply with an inverter,
which was unusual and novel for an instrument like this at that time.

Is there a better way?

The Motorola 6800 page
() lists patents
associated with that family of devices. And, the language makes it sound
like these are all the associated patents. So, maybe there's a better
way to find all the patents for a device?

Thanks
Matt
Re: WTD: Filter capacitors for 8662A PSU

 

One of them tests completely open, and the ESR on the other is several hundred ohms....

I have located a set of capacitors through another person on this list, so hopefully replacing them (and all the other smaller electrolytics in the power supply) gets my unit up and running again.

73,
Bob Weiss N2IXK
Re: HP-8753E Options Activated

[email protected]
 

The systematic is the same on pretty much all HP 8752/53/19/20/22 analyzers, you find the serial number and the 3 Fx codes are setting the options!
one word of caution though on the 8753E/ES CPU board, when removing and resoldering the SMT eeprom
?you need to clean up all flux residue throughly or you can get issues?
8516A cable question

[email protected]
 

Does anyone know the pinout of the 08516-60009
interconnect cable that connects the 8516 to the 8341B ?
Re: HP 14570A AC Power Switch

 

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Am 21.02.2022 um 08:24 schrieb Joel Setton:

Hello,

Has anyone heard about the HP 14570A ? This is not a well-known product, it is an AC Power Switch, made by the New Jersey Division (formerly Harrison Labs), and described with some detail in the December 1982 issue of HP Journal.
Would anyone have a manual or schematics for the 14570A ? I have not been able to locate it on the Web.

Thanks,

Joel Setton

Re: WTD: Filter capacitors for 8662A PSU

 

¿ªÔÆÌåÓý

Hello Why cange them. Are they tested bad or just want to change them ?
best regards Peter

Fra: [email protected] <[email protected]> p? vegne af Bob Weiss <bobweiss1967@...>
Sendt: 20. februar 2022 23:45
Til: [email protected] <[email protected]>
Emne: [HP-Agilent-Keysight-equipment] WTD: Filter capacitors for 8662A PSU
?
Am looking for replacements for the 2 large +/-160V filter capacitors used in the primary side of the SMPS in the 8662A synthesizer.

The original units are Sprague "compulytic" capacitors, rated 600 uf/250V.? Sprague p/n 32DR6593 They are 1.75" diameter, 3.125" long, with a screw spacing of .750".? The HP p/n is 0180-2835

I cannot find any supplier who has these units available, and the closest replacement units I can find are also non-stock, and are 2" diameter with a different terminal spacing.

Does anyone here have a parts mule 8662A they would be willing to rob the caps out of?

73,
Bob Weiss N2IXK

HP 14570A AC Power Switch

 

Hello,

Has anyone heard about the HP 14570A ? This is not a well-known product, it is an AC Power Switch, made by the New Jersey Division (formerly Harrison Labs), and described with some detail in the December 1982 issue of HP Journal.
Would anyone have a manual or schematics for the 14570A ? I have not been able to locate it on the Web.

Thanks,

Joel Setton
HP 9100-1742 Transformer

 

Anyone know what scope this transformer was used on?
28961 - 28980 of 151490