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Re: Old HP 8558B spectral analyzer

 






Envoy¨¦ depuis mon Redmi 4X
Le 3 mars 2021 4:35 PM, Gerard <kabupos@...> a ¨¦crit :

Bonjour Johnlegros

Thank you so much for your help.
the manual service I have dated October 1977. It is the 90043
You have to look at the first page. see my picture
If yours is older (<90043) . That might help me.

It is necessary to look in the middle of the documentation the diagram of the control of the displays.?This is the section that explains the whole panel A1, A2, etc.?All my display block is made of 5 small circuit boards (see photos in previous posts).
You will also have to look at the end of the manual, everything that follows the schematic of the motherboard A16, you will see the connection of the DPM
if you can scan all this part and make available as a file it will be a big progress
thank you. I am not near of Paris.

cdt

Re: Old HP 8558B spectral analyzer

 

More with modifications








Envoy¨¦ depuis mon Redmi 4X
Le 3 mars 2021 4:35 PM, Gerard <kabupos@...> a ¨¦crit :

Bonjour Johnlegros

Thank you so much for your help.
the manual service I have dated October 1977. It is the 90043
You have to look at the first page. see my picture
If yours is older (<90043) . That might help me.

It is necessary to look in the middle of the documentation the diagram of the control of the displays.?This is the section that explains the whole panel A1, A2, etc.?All my display block is made of 5 small circuit boards (see photos in previous posts).
You will also have to look at the end of the manual, everything that follows the schematic of the motherboard A16, you will see the connection of the DPM
if you can scan all this part and make available as a file it will be a big progress
thank you. I am not near of Paris.

cdt

Re: Old HP 8558B spectral analyzer

 








Envoy¨¦ depuis mon Redmi 4X
Le 3 mars 2021 4:35 PM, Gerard <kabupos@...> a ¨¦crit :

Bonjour Johnlegros

Thank you so much for your help.
the manual service I have dated October 1977. It is the 90043
You have to look at the first page. see my picture
If yours is older (<90043) . That might help me.

It is necessary to look in the middle of the documentation the diagram of the control of the displays.?This is the section that explains the whole panel A1, A2, etc.?All my display block is made of 5 small circuit boards (see photos in previous posts).
You will also have to look at the end of the manual, everything that follows the schematic of the motherboard A16, you will see the connection of the DPM
if you can scan all this part and make available as a file it will be a big progress
thank you. I am not near of Paris.

cdt

Re: Old HP 8558B spectral analyzer

 








Envoy¨¦ depuis mon Redmi 4X
Le 3 mars 2021 4:35 PM, Gerard <kabupos@...> a ¨¦crit :

Bonjour Johnlegros

Thank you so much for your help.
the manual service I have dated October 1977. It is the 90043
You have to look at the first page. see my picture
If yours is older (<90043) . That might help me.

It is necessary to look in the middle of the documentation the diagram of the control of the displays.?This is the section that explains the whole panel A1, A2, etc.?All my display block is made of 5 small circuit boards (see photos in previous posts).
You will also have to look at the end of the manual, everything that follows the schematic of the motherboard A16, you will see the connection of the DPM
if you can scan all this part and make available as a file it will be a big progress
thank you. I am not near of Paris.

cdt

Re: Old HP 8558B spectral analyzer

 








Envoy¨¦ depuis mon Redmi 4X
Le 3 mars 2021 4:35 PM, Gerard <kabupos@...> a ¨¦crit :

Bonjour Johnlegros

Thank you so much for your help.
the manual service I have dated October 1977. It is the 90043
You have to look at the first page. see my picture
If yours is older (<90043) . That might help me.

It is necessary to look in the middle of the documentation the diagram of the control of the displays.?This is the section that explains the whole panel A1, A2, etc.?All my display block is made of 5 small circuit boards (see photos in previous posts).
You will also have to look at the end of the manual, everything that follows the schematic of the motherboard A16, you will see the connection of the DPM
if you can scan all this part and make available as a file it will be a big progress
thank you. I am not near of Paris.

cdt

Re: Old HP 8558B spectral analyzer

 

More







Envoy¨¦ depuis mon Redmi 4X
Le 3 mars 2021 4:35 PM, Gerard <kabupos@...> a ¨¦crit :

Bonjour Johnlegros

Thank you so much for your help.
the manual service I have dated October 1977. It is the 90043
You have to look at the first page. see my picture
If yours is older (<90043) . That might help me.

It is necessary to look in the middle of the documentation the diagram of the control of the displays.?This is the section that explains the whole panel A1, A2, etc.?All my display block is made of 5 small circuit boards (see photos in previous posts).
You will also have to look at the end of the manual, everything that follows the schematic of the motherboard A16, you will see the connection of the DPM
if you can scan all this part and make available as a file it will be a big progress
thank you. I am not near of Paris.

cdt

Re: Old HP 8558B spectral analyzer

 

here relative board photos







Envoy¨¦ depuis mon Redmi 4X
Le 3 mars 2021 4:35 PM, Gerard <kabupos@...> a ¨¦crit :

Bonjour Johnlegros

Thank you so much for your help.
the manual service I have dated October 1977. It is the 90043
You have to look at the first page. see my picture
If yours is older (<90043) . That might help me.

It is necessary to look in the middle of the documentation the diagram of the control of the displays.?This is the section that explains the whole panel A1, A2, etc.?All my display block is made of 5 small circuit boards (see photos in previous posts).
You will also have to look at the end of the manual, everything that follows the schematic of the motherboard A16, you will see the connection of the DPM
if you can scan all this part and make available as a file it will be a big progress
thank you. I am not near of Paris.

cdt

Re: Seeking HP 6263B power supply meter bezels

 

If anyone else needs some of these, as of today I have 6 more of this size, two larger ones, P/N 4040-0293 if the bag is to be believed, and two more with steel brackets on the plastic bezel.? PM me if you need some.
Re: Old HP 8558B spectral analyzer

 

Bonjour Johnlegros

Thank you so much for your help.
the manual service I have dated October 1977. It is the 90043
You have to look at the first page. see my picture
If yours is older (<90043) . That might help me.

It is necessary to look in the middle of the documentation the diagram of the control of the displays.?This is the section that explains the whole panel A1, A2, etc.?All my display block is made of 5 small circuit boards (see photos in previous posts).
You will also have to look at the end of the manual, everything that follows the schematic of the motherboard A16, you will see the connection of the DPM
if you can scan all this part and make available as a file it will be a big progress
thank you. I am not near of Paris.

cdt

reference service manual.GIF

Re: Old HP 8558B spectral analyzer

 

¿ªÔÆÌåÓý

Hello sir ,

I have a paper service manual from 1975 that covers early models , including 1321Axxx , and a working 8558B from that era ,

If this helps...am in France near Fontainebleau ,

you may come fetch both for comparing test points , and once finished give back , I don't want to sell them

Regards John

Le 02/03/2021 ¨¤ 17:18, Gerard a ¨¦crit?:

Hello Froggie the Gremlin and Don

Thanks for yours answers

Yes this analyzer had a lot of version.
The serial number is 1321Axxxx.
I consulted 3 service manual HP
90043, 90061 and 90102.
None of this type DPM display.
It must be very old.?It may be the first generation.?It probably has previous documentation but don't known the 90xxx number. (<90043)
If you have the schematic, it will help me a lot.

I found the display datasheet.
When going up from the display, the 7 pin power power supply is not at the high level via the control transistor. I went up to a 7410 circuit (leg 12). I have to look at the conditions at 1,2 and 13.
This is where I am, but with the schematic it will go faster
again I hand over the pictures of the DPM? display set

cdt

Re: GPIB Disk emulator/HP8753B

 

Hi Rik
thank you for your suggestion.
I will investigate this additional possibility.
My problem is that I do not have any competence about computers
and it is difficult for me to understand? this matter.
Regards
IZ2ZNC Gianfranco
Two Simpson VOMs!

 

Richard I like your note, I have 5 of these some with the leather cases, from an avionics CRT HV power supply production tester, 1980s

Unlike digital meters the analog Simpsons are not killed by Hv or arcs.

Have to Unearth them from the subbasement.

Jon
Re: GPIB Disk emulator/HP8753B

 

You're missing one possibility hpdisk from Ansgar K. www.hp9845.net

-Rik
GPIB Disk emulator/HP8753B

 

Hi all
I have a VNA HP8753B.There are 3 possibilitie to memorize data to an external support :
- external disk HP9122
- GPIB Disk emulator of Anders G.
- 9753.exe the sw from KE5FX e PC is needed.
I ask the collegues of the group if they have experience of any of the A.M.
options and their suggestion.
Thanks
IZ5ZNC Gianfranco
?
Re: FS: Two Simpson VOMs!

 

Hello all,
I forgot to state that these are 260s. Sorry!
GOD Bless and Thanks,
rich!

On 3/3/2021 2:16 AM, Richard R. Pope wrote:
Hello all,
I have two Simpson VOMs for sale. One is a Series 3 which was probably built during WWII or right at the end of the war. The other is a Series 6 that was probably built in the middle 60s. Both of them are in good shape with no damage to the meters. The Series 6 has a cracked case that has been repaired. Both of them suffer some minor corrosion damage that has been repaired. I am asking $100 each plus shipping. I am open to any reasonable offer. Please respond off list. I prefer Paypal F&F. If you use G&S please add 4.5% to cover the PP fee. I will also accept MO, Cashiers check, or personal check. Personal checks must clear before I will ship.
GOD Bless and Thanks,
Richard R. Pope
1230 19th Street #5
Reedsburg, WI 53959
608-768-7448 LL after 4 pm!
608-408-0357 Cell, travels only!
mechanic_2@...
FS: Two Simpson VOMs!

 

Hello all,
I have two Simpson VOMs for sale. One is a Series 3 which was probably built during WWII or right at the end of the war. The other is a Series 6 that was probably built in the middle 60s. Both of them are in good shape with no damage to the meters. The Series 6 has a cracked case that has been repaired. Both of them suffer some minor corrosion damage that has been repaired. I am asking $100 each plus shipping. I am open to any reasonable offer. Please respond off list. I prefer Paypal F&F. If you use G&S please add 4.5% to cover the PP fee. I will also accept MO, Cashiers check, or personal check. Personal checks must clear before I will ship.
GOD Bless and Thanks,
Richard R. Pope
1230 19th Street #5
Reedsburg, WI 53959
608-768-7448 LL after 4 pm!
608-408-0357 Cell, travels only!
mechanic_2@...

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PICT0029.JPG
PICT0030.JPG

Re: Old HP 8558B spectral analyzer

 

¿ªÔÆÌåÓý

For a TTL NAND/ANG gate, the additional low input doesn't change the low level fanout, the high level fanout does change by 1.? These inputs are all emitters for the same transistor.

For OR gates, the input structure has a transistor for each input, and it will increase the low level fanout.? High level increases by one as well.

Yep, tie an unused input to a used input, same gate, of course.? Subject to the above.

Harvey



On 3/2/2021 5:07 PM, Dave Daniel wrote:

You mean tie an unused input to a used input, correct?

Doing that will work just fine as long as the fan-out of the driving gate is not exceeded.

DaveD

On Mar 2, 2021, at 17:02, Harvey White <madyn@...> wrote:

TTL gates?? logic 1, but a very marginal logic 1.? Best to tie it to VCC with a resistor between 1K0 and 4K7.? You can tie an unused input to a nand gate to an unused input of the SAME gate.? Either should work.? Floating inputs on logic are not good unless specifically taken care of in the chip.

Harvey


On 3/2/2021 4:09 PM, Gerard wrote:
Hello, Jon and Dan,

I think I¡¯m close.
Following the digits ignition control, this one is made of a triple gate NAND + power with? a transistor. Curiously, following the 3 inputs of the NAND, I realize that an input comes from the 29 leg of the DPM connector.
And here, no connection on this leg (29)? of the DPM connector (see picture) , the wire in question is actually connected to 1 and 26, which is inconsistent with the schematic.
there was tinkering on this analyzer, it can¡¯t work in this state

I no longer know what a leg not connected on a logic Nand do (state Hight or low?)? , but if considered "low", it will not work.
You must have the tree gate at Hight

see table:

So, i will look that to morrow
good night

cdt
Re: HP 8901B/8902A History

 

Well, you learn something every day.

I have an 8566A but am yet to check it over for bad caps before firing it up.

On 3/03/21 6:49 am, Dave McGuire wrote:
? The 8566A/8568A are based on the HP "cylinder head" CPU, a multi-chip VLSI implementation of the HP 2100 architecture, not the F8.? The F8 is a great little chip, but has nowhere near the horsepower to run something like an 8566A/8568A.
????????????? -Dave
Re: Chips for 5315A/B counter: 1820-2131 and 1820-2312

 

The guy who developed Retroshields has options to put a number of processors (just the processors like a Z80, MC6803, 8085 etc) on a plugin board for a Arduino Mega, and is using the Arduino to control the CPU fully, clocking it in AVR software, providing ram/rom for it etc. So it basically provides the address space for it. I that case I would just set some MC6801 code to do a blockmove to the 'RAM' of the AVR, and export that as intel Hex or S19.
I do have most parts (including the GAL) as an alternative to that with this project:??so I could go that route - it would help too to read the chip. Are there more instruments HP made which use that controller?

Maurice

?
Re: Old HP 8558B spectral analyzer

 

¿ªÔÆÌåÓý

You mean tie an unused input to a used input, correct?

Doing that will work just fine as long as the fan-out of the driving gate is not exceeded.

DaveD

On Mar 2, 2021, at 17:02, Harvey White <madyn@...> wrote:

TTL gates?? logic 1, but a very marginal logic 1.? Best to tie it to VCC with a resistor between 1K0 and 4K7.? You can tie an unused input to a nand gate to an unused input of the SAME gate.? Either should work.? Floating inputs on logic are not good unless specifically taken care of in the chip.

Harvey


On 3/2/2021 4:09 PM, Gerard wrote:
Hello, Jon and Dan,

I think I¡¯m close.
Following the digits ignition control, this one is made of a triple gate NAND + power with? a transistor. Curiously, following the 3 inputs of the NAND, I realize that an input comes from the 29 leg of the DPM connector.
And here, no connection on this leg (29)? of the DPM connector (see picture) , the wire in question is actually connected to 1 and 26, which is inconsistent with the schematic.
there was tinkering on this analyzer, it can¡¯t work in this state

I no longer know what a leg not connected on a logic Nand do (state Hight or low?)? , but if considered "low", it will not work.
You must have the tree gate at Hight

see table:

So, i will look that to morrow
good night

cdt
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