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Date
Re: Need original Service Manual of 8970B Noise Figure Meter

 

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Artek has the scan of both the operator and service manual for $15.00 USD.
His quality is excellent.

73
Glenn
WB4UIV

On 4/8/2019 11:17 AM, Alberto, IZ2EWV wrote:
Hello friends,
I live in Italy (for the scope of the help I'm going to ask...) and own a hp 8970B Noise Figure Meter and the only copy of its Service Manual (standard version, up to 1600 MHz - for S/N prefixed 3106A and above) that I found in the Web is poor - surely scanned from a copy:
  • block and schematic diagrams of larger size are scanned in pieces, but the left/right sides are missing;
  • too dark photos cannot show the tagged parts;
  • too light pictures of the PCBs cannot show the tracks in transparency.
I ask if anybody could send me a good copy of the Service Manual or borrow me an original paper folder, which I could scan by myself. Obviously, I would pay for round trip shipping.
Thank you in advance,
Alberto, IZ2EWV 

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Glenn Little                ARRL Technical Specialist   QCWA  LM 28417
Amateur Callsign:  WB4UIV            wb4uiv@...    AMSAT LM 2178
QTH:  Goose Creek, SC USA (EM92xx)  USSVI LM   NRA LM   SBE ARRL TAPR
"It is not the class of license that the Amateur holds but the class
of the Amateur that holds the license"

Re: Power Switch Button for HP 1631D

 

Hi Dave
Some time ago, for mine, I redid one using a plastic profile, folded with hot air, to which I then pasted a button. It is not the original but it works. I had made one as a spare, if you want I can send it to you.


Dario IU3ARP
Re: Need original Service Manual of 8970B Noise Figure Meter

 

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Thank you Siggi,

I just asked them, in order to know about the quality of the manual.

Il giorno 08 apr 2019, alle ore 19:02, Siggi <siggi@...> ha scritto:

Hey Alberto,

looks like Artek Manuals has a scan (). Maybe you should hit them up for a copy?

Regards,
Siggi

On Mon, Apr 8, 2019 at 12:11 PM Alberto, IZ2EWV <iz2ewv@...> wrote:
Hello friends,
I live in Italy (for the scope of the help I'm going to ask...) and own a hp 8970B Noise Figure Meter and the only copy of its Service Manual (standard version, up to 1600 MHz - for S/N prefixed 3106A and above) that I found in the Web is poor - surely scanned from a copy:
  • block and schematic diagrams of larger size are scanned in pieces, but the left/right sides are missing;
  • too dark photos cannot show the tagged parts;
  • too light pictures of the PCBs cannot show the tracks in transparency.
I ask if anybody could send me a good copy of the Service Manual or borrow me an original paper folder, which I could scan by myself. Obviously, I would pay for round trip shipping.
Thank you in advance,
Alberto, IZ2EWV




Tnx es 73 de
Alberto Calderara
Via Santa Marta, 26
20871 Vimercate (MB) - Italy
IZ2EWV?amateur radio station
ITU?28?¨C CQ?15?¨C WWL?JN45qo
SKCC #18930
iz2ewv@...?/?iz2ewv@...

? ?
Re: HP 8720D - Debugging story

 

Derek, if I had to make a guess, I would say that the previous owner did a DIY installation of the "8720DU Opt. 000 Peformance Update Kit". That would explain many of the problems you are seeing (pinched cable, heat sink, missing options in the firmware, and maybe more). Do a web search for document no. 08720-90372. This describes the conversion to the new CPU board and data entry into the EEPROM.

Vladan
Re: Need original Service Manual of 8970B Noise Figure Meter

 

Hey Alberto,

looks like Artek Manuals has a scan (). Maybe you should hit them up for a copy?

Regards,
Siggi

On Mon, Apr 8, 2019 at 12:11 PM Alberto, IZ2EWV <iz2ewv@...> wrote:
Hello friends,
I live in Italy (for the scope of the help I'm going to ask...) and own a hp 8970B Noise Figure Meter and the only copy of its Service Manual (standard version, up to 1600 MHz - for S/N prefixed 3106A and above) that I found in the Web is poor - surely scanned from a copy:
  • block and schematic diagrams of larger size are scanned in pieces, but the left/right sides are missing;
  • too dark photos cannot show the tagged parts;
  • too light pictures of the PCBs cannot show the tracks in transparency.
I ask if anybody could send me a good copy of the Service Manual or borrow me an original paper folder, which I could scan by myself. Obviously, I would pay for round trip shipping.
Thank you in advance,
Alberto, IZ2EWV

need original Service Manual of 8970B Noise Figure Meter

 

Hello friends,
I'm based in Italy (for who should decide to help me...) and I have some issues around my 8970B, standard version (without options). The only PDF copy of the Service Manual of this version, which is available in the Web, was scanned in a bad way:
  • especially the block and schematic diagrams, which are originally deployed on folded sheets, are truncated at?the left/right sides;
  • the inside photos are too dark;
  • the PCB pictures are too light and impossible to read the tracks.
No way to find a good copy in the Keysight's Web site.
I ask you if anybody got a good scanned version or could borrow me an original paper manual, that I could scan in the best way and then share with you, once the job has been completed. Obviously, I should pay the shipping costs or consider other requests.
Thank You in advance,
Alberto, IZ2EWV
Power Switch Button for HP 1631D

 

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I am missing the button on the end of the power switch on my HP 1631D. It can still be turned on by pushing the switch with a screw driver but doesn't look the best.

Does anyone know if these switch buttons can be sourced or is it a 3D print job? I don't have the CLIPs for the unit so I can't identify the switch number but it looks like the shaft on a standard push button switch except the shaft is at 45 degrees (looks like a diamond from the front) and the standard push button is generally not contoured.

Thanks

Dave
Re: Equivalent NPN Transistor for 8560E

 

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Dave C

Opps you are right about the swap of letters, I guess that make it more difficult.

Thanks for looking it up.

Dave I


On 8/04/2019 6:47 pm, Dave Casey wrote:

1) You have your Xs and Ts transposed.

2) Looks like it crosses to a CXT2222A currently in stock at Mouser and likely others. The "extra" lead in the body is just like the tab on a TO-220 case; in this case it's the collector as is the center pin.

Dave Casey

On Mon, Apr 8, 2019 at 5:31 AM Dave Ireland <mirrors@...> wrote:

Tracked down the fault in a 8560E to failure of the regulator transistor in the 100Mhz VCXO. Substituted the supply and the oscillator circuit is drawing little current so I am not sure why it would have failed except there is evidence someone changed the crystal so might have been their fault.

The transistor is listed is a 1854-1094 or manufacturer part number PTX2222A. Google this results in a lot of Japanese and NPN thrown in the mix. The Equivalents List says it is a MTX2222A which is also a mystery.

I am assuming it is a SMD style 2N2222A but the under body solder pad with the 4 legs has me a bit concerned it might be something special. Anyone know this device? ? ?

Dave
Re: Equivalent NPN Transistor for 8560E

 

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Doug

Thanks for that good detective work.

Looks like a 2222 will get it going in the short term while I fault find the long list of alarms.

Thanks again.

Dave


Sent from my Samsung GALAXY S5


-------- Original message --------
From: Doug Bercich <doug@...>
Date: 8/04/2019 19:30 (GMT+08:00)
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] Equivalent NPN Transistor for 8560E

Took a little amount of sleuthing, but I f you search for pxt2222a115 it appears to be an ordinary 2222 variant. The tab, opposing middle pin and ¡°heatsink¡± are all one pin; the collector.?

Here¡¯s an Octopart link, and you can get them on eBay too:
https://datasheet.octopart.com/PXT2222A%2C115-Nexperia-datasheet-87582290.pdf

-d

?
From: [email protected] on behalf of Dave Ireland <mirrors@...>
Sent: Monday, April 8, 2019 5:31 AM
To: [email protected]
Subject: [HP-Agilent-Keysight-equipment] Equivalent NPN Transistor for 8560E
?

Tracked down the fault in a 8560E to failure of the regulator transistor in the 100Mhz VCXO. Substituted the supply and the oscillator circuit is drawing little current so I am not sure why it would have failed except there is evidence someone changed the crystal so might have been their fault.

The transistor is listed is a 1854-1094 or manufacturer part number PTX2222A. Google this results in a lot of Japanese and NPN thrown in the mix. The Equivalents List says it is a MTX2222A which is also a mystery.

I am assuming it is a SMD style 2N2222A but the under body solder pad with the 4 legs has me a bit concerned it might be something special. Anyone know this device? ? ?

Dave
Re: HP 8720D - Debugging story

Derek Kozel
 

I've done some basic testing and found a few fun things.

1) The blue data to the LCD is not connected
2) The Source Out -> In jumper on the back is cracked and the loss is too high below 500 MHz for the PLL to reliably work. Swapping jumpers makes the PLL lock reliably so I need a replacement but the system seems ok
3) The CPU heatsink was installed without ever removing the plastic sheet on top of the thermal paste!

The CPU fan for my 8720D is a Sunon AVD0504B2-8. It is mechanically different from the one you say is on the 8720ES. Looking at it there's a lot of lateral play on the fan axis so it's unsurprising that it's loud when the VNA is on it's side. Disappointing for what seems to be a quality fan, but good enough for it's usual use. I'd like to source a spare, but it's a lower priority now.

I borrowed a calibration kit and was able to make full two port measurements that match expectations between 500 MHz and 2 GHz. The calibration seemed good up to 20 GHz, but I need a better DUT to check that. I'm making a Beatty Standard this week to test with.

A replacement BR-2/3A battery arrived and will get installed tonight.
Re: Equivalent NPN Transistor for 8560E

 

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Took a little amount of sleuthing, but I f you search for pxt2222a115 it appears to be an ordinary 2222 variant. The tab, opposing middle pin and ¡°heatsink¡± are all one pin; the collector.?

Here¡¯s an Octopart link, and you can get them on eBay too:
https://datasheet.octopart.com/PXT2222A%2C115-Nexperia-datasheet-87582290.pdf

-d

?

From: [email protected] on behalf of Dave Ireland <mirrors@...>
Sent: Monday, April 8, 2019 5:31 AM
To: [email protected]
Subject: [HP-Agilent-Keysight-equipment] Equivalent NPN Transistor for 8560E
?

Tracked down the fault in a 8560E to failure of the regulator transistor in the 100Mhz VCXO. Substituted the supply and the oscillator circuit is drawing little current so I am not sure why it would have failed except there is evidence someone changed the crystal so might have been their fault.

The transistor is listed is a 1854-1094 or manufacturer part number PTX2222A. Google this results in a lot of Japanese and NPN thrown in the mix. The Equivalents List says it is a MTX2222A which is also a mystery.

I am assuming it is a SMD style 2N2222A but the under body solder pad with the 4 legs has me a bit concerned it might be something special. Anyone know this device? ? ?

Dave
Re: Equivalent NPN Transistor for 8560E

 

1) You have your Xs and Ts transposed.

2) Looks like it crosses to a CXT2222A currently in stock at Mouser and likely others. The "extra" lead in the body is just like the tab on a TO-220 case; in this case it's the collector as is the center pin.

Dave Casey


On Mon, Apr 8, 2019 at 5:31 AM Dave Ireland <mirrors@...> wrote:

Tracked down the fault in a 8560E to failure of the regulator transistor in the 100Mhz VCXO. Substituted the supply and the oscillator circuit is drawing little current so I am not sure why it would have failed except there is evidence someone changed the crystal so might have been their fault.

The transistor is listed is a 1854-1094 or manufacturer part number PTX2222A. Google this results in a lot of Japanese and NPN thrown in the mix. The Equivalents List says it is a MTX2222A which is also a mystery.

I am assuming it is a SMD style 2N2222A but the under body solder pad with the 4 legs has me a bit concerned it might be something special. Anyone know this device? ? ?

Dave
Equivalent NPN Transistor for 8560E

 

¿ªÔÆÌåÓý

Tracked down the fault in a 8560E to failure of the regulator transistor in the 100Mhz VCXO. Substituted the supply and the oscillator circuit is drawing little current so I am not sure why it would have failed except there is evidence someone changed the crystal so might have been their fault.

The transistor is listed is a 1854-1094 or manufacturer part number PTX2222A. Google this results in a lot of Japanese and NPN thrown in the mix. The Equivalents List says it is a MTX2222A which is also a mystery.

I am assuming it is a SMD style 2N2222A but the under body solder pad with the 4 legs has me a bit concerned it might be something special. Anyone know this device? ? ?

Dave
Re: Service Manual for HP 3708A

 

Hi Dario,

I can assist, drop me a private mail. vk3gjm@...

Regards

Gerald
Re: HP86320A heterodyne module - need info

 

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If you can¡¯t find anything check out data for the ¡®similar ranges¡¯ plugin for the 8690. It was the 8699B.

DaveB, NZ

?

From: [email protected] [mailto:[email protected]] On Behalf Of Ed Breya via Groups.Io
Sent: Monday, April 08, 2019 13:54
To: [email protected]
Subject: [HP-Agilent-Keysight-equipment] HP86320A heterodyne module - need info

?

Does anyone have any info on the HP86320A heterodyne module? This was the back assembly of certain 862XX sweeper plug-ins from the 1970s. It provided two bands covering 100 MHz to 2 GHz, and 2-4 GHz, using a 2-4 GHz YTO for drive. I have a couple that I want to use for a project. I sort of had the basic hookups, supplies, etc figured out sufficiently many years ago, but of course now can't find my notes, and it still seems to be pretty obscure, info-wise. Not much out there on line. I mostly need to know the operating voltages for the power amplifier, the LO, and the proper PIN switch drive topology.

Ed

HP86320A heterodyne module - need info

 

Does anyone have any info on the HP86320A heterodyne module? This was the back assembly of certain 862XX sweeper plug-ins from the 1970s. It provided two bands covering 100 MHz to 2 GHz, and 2-4 GHz, using a 2-4 GHz YTO for drive. I have a couple that I want to use for a project. I sort of had the basic hookups, supplies, etc figured out sufficiently many years ago, but of course now can't find my notes, and it still seems to be pretty obscure, info-wise. Not much out there on line. I mostly need to know the operating voltages for the power amplifier, the LO, and the proper PIN switch drive topology.

Ed
Looking for pair of MK38p70 piggyback Microcontrollers

 

I got out bid on a stick of these. (MK38p70) I need a couple for a project. Anyone have any.?
Service Manual for HP 3708A

 

Hi everyone. Does anyone have or know where to find the service manual for HP 3708A? On EBay there are some on sale from America, but the shipping costs are greater than the cost of the manual itself. Thank you

Dario - IU3ARP
Re: Service notes library on microfiche (5951-6511)

 

Below an example of the reference to the service notes library from the 1992 2nd,?3rd. 4th Quarter Bench Briefs:



Thank you,
Wolfgang Schraml, KI7PFX

--------------------------------------------------------------------------------


On Thu, Mar 28, 2019 at 11:38 PM, Wolfgang Schraml wrote:
I have seen a service notes library referenced in many?of the older "Bench Briefs". Part number was 5951-6511 or H5320A.?
There was also a subscription service that could be ordered under part number 5951-6517 or H5299A.
Has anyone ever seen one of these microfiche packages? I keep looking on eBay but no success so far.

Thank you,
Wolfgang, KI7PFX

?On Thu, Mar 28, 2019 at 11:38 PM, Wolfgang Schraml wrote:
H5320A
Re: hp8640B strange output_fixed

 

Hi all,

I could fix the Generator!
The problem were missing wipers.
I could gain such wipers from a board connector. See attachment.

Best regards
Armin
HB9MFL

Reparatur6.pdf
Reparatur6.pdf
LP_Stecker.jpg

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