Intermittent error #hp8920b

#340

Hi I have got an intermittent error with my HP8920B. The error is "Receiver assembly (low)".
Could someone please provide some clarity on this issue.

Thanks in advance!

Re: Conecting external monitor to HP8924c #video #gbs8220 #vga #hp8924c

#339

Thank you, Alexander, for your email. Pls note that as I wrote in my previous, in the next step I will try with a sync separator.

But I think that reporting this easy way to get a picture to the monitor, should prove a good first step for many that otherwise might drop their efforts; and for others, including me, is a QnD solution when needed.

73

Yiannis
SV1MNE

Στι? Π?μ, 12 Αυγ 2021 στι? 6:57 π.μ., ο/η Alexandre Souza <alexandre.tabajara@...> ?γραψε:

Show quoted text

08/08/2021 12:10, sv1mne wrote:
> Hi Alexander, it definitely works without a sync separator, via the Y
> Composite input (at least on my GBS8200)
> Look at the pictures I have posted in my SV1MNE folder in Photos
> section.

Ok, if you think that it is working missing a piece of the screen, feel
free to use that way.
--

Re: Conecting external monitor to HP8924c #video #gbs8220 #vga #hp8924c

#338

08/08/2021 12:10, sv1mne wrote:
Hi Alexander, it definitely works without a sync separator, via the Y Composite input (at least on my GBS8200)
Look at the pictures I have posted in my SV1MNE folder in Photos section. Ok, if you think that it is working missing a piece of the screen, feel free to use that way.
-- 

Re: Conecting external monitor to HP8924c #video #gbs8220 #vga #hp8924c

#337
Edited

Hi Alexander, it definitely works without a sync separator, via the Y Composite input (at least on my GBS8200)
The picture I get is exactly as yours in "A proposito, ninguem questionou "e se colocar o video composto na entrada da controladora do LCD? Claro que eu tentei, olha a meleca que fica =D"
Look at the pictures I have posted in my SV1MNE folder in Photos section. (/g/HP8924-Family-Spectrum-Analyzers/album?id=241724)

Best R

Yiannis

Re: Conecting external monitor to HP8924c #video #gbs8220 #vga #hp8924c

#336

It does not work, you gotta use a sync separator and inject composite video on g (or r or b) input of analog video and composite sync on sync input.

Yiannis wrote:

Show quoted text

Hi Alexandre and friends,

The connection I made is as follows:

1. From HP8924c video out (BNC) to GBS8200 Y-video in (RCA) with BNC cable and BNC to RCA adapter
2. From GBS8200 VGA out to Samsung Monitor/TV VGA/PC input with standard VGA cable
3. The GBS8200 is set o YPbPr mode.

Re: Conecting external monitor to HP8924c #video #gbs8220 #vga #hp8924c

#335

Hi Alexandre and friends,

The connection I made is as follows:

1. From HP8924c video out (BNC) to GBS8200 Y-video in (RCA) with BNC cable and BNC to RCA adapter
2. From GBS8200 VGA out to Samsung Monitor/TV VGA/PC input with standard VGA cable
3. The GBS8200 is set o YPbPr mode.

As it is shown in the photos I uploaded, it works almost well, for practical purposes, but the display is offset to the left, missing three text columns. (Maybe this will be corrected with the sync separator).

Thank you for the nice work and leading us to a solution!

Best R

Yiannis
SV1MNE

Re: Conecting external monitor to HP8924c #video #gbs8220 #vga #hp8924c

#334

Sorry, I wasn't able to understand. You got the GBS8200 but you're connecting the tv directly to the SM? It wont work, you gotta build the sync separator and connect it on the GBS8200 as I wrote on my blog...

73 de PU2SEX Alexandre

Re: Conecting external monitor to HP8924c #video #gbs8220 #vga #hp8924c

#333

Thank you Friend

Re: 2 photos uploaded #photo-notice

#332

You may be able to shrink it in your Monitor's setup H-Size and H-Center

2 photos uploaded #photo-notice

[email protected] Notification

#331

The following photos have been uploaded to the SV1MNE Photos album of the [email protected] group.

By: sv1mne <sv1mne@...>

Re: Conecting external monitor to HP8924c #video #gbs8220 #vga #hp8924c

#330
Edited

Hi again,

My GBS 8200 V4.0 has arrived and I managed to get a display on my Samsung TV monitor directly from the video RCA connector.

The image is crisp and steady,? Black and White, which is nice btw. The only problem is that it is shifted on tha lest and a portion abt 3 text colums, does not display.

Uploaded photos in SV1MNE folder.

Next I will try with a sync separator.

73

Yiannis

Re: Program to retrieve HP8920 calibration data...

#329

hello OLIVER_D can you tell me what options your instrument has where you have done the cal_dump? since you are much more experienced than me according to you or whoever reads it is possible to dump (copy) the X28C256-20 with the eeprom programmer that is installed on the machine? many thanks if there is an answer Alfonso?

Re: Loading RFTOOLS files into an 8920A

#328

Hi Robert,

Yes.  That is the program that I have been using to convert the DOS formatted files into LIF formatted files.

That doesn’t seem to be the problem, though as I get the same result whether the disk is DOS or LIF formatted.

I wonder if it has anything to do with the “new” file name?

Do you know if the order of the files matters?  

Any other thoughts?

Thank you for your help!

Brian

Re: Loading RFTOOLS files into an 8920A

#327

Hi Brian.

Have you tried LIFUTIL?

The programs are the same for the A and B. They are written in Basic.

Robert G8RPI.

Re: List of capacitors to rebuild HP 8920A power supply

#326

I might add that all of the electrolytic capacitors in my 1992-1993 era HP 8920A power supply were leaking nasty smelling electrolyte.?

If you haven't done so, I'd suggest re-capping your power supply before the leaking electrolyte destroys the circuit board.? I caught mine in just a nick of time.??

The Nichicon capacitors in the list that I provided are all of very high quality and are rated at105C.? They should provide many years of service.? With the exception of the 47 uF capacitors, they will all fit into the circuit board perfectly and will be roughly the same size as the original Rubycon capacitors.

Brian

Re: List of capacitors to rebuild HP 8920A power supply

#325

开云体育

Anyone have a parts list for the 8935. ?I need to rebuild mine and it would save time if I can order them before I pull the supply.

Thanks.

KE6CD?

Show quoted text

On Jul 22, 2021, at 10:36 AM, Brian J. Henry <bhenry@...> wrote:

?
List of capacitors to rebuild HP 8920A power supply:

??

DIGI-KEY PART: 493-12239-1-ND

QUANITY: 4

MFG: Nichicon (VA) / UPM1H471MHD1TO

DESC: CAP ALUM 470UF 20% 50V RADIAL

?

DIGI-KEY PART: 493-6910-ND

QUANITY: 9

MFG: Nichicon / UHW1H102MHD

DESC: CAP ALUM 1000UF 20% 50V RADIAL

?

DIG-KEY PART: 493-11850-1-ND

QUANITY: 4

MFG: Nichicon (VA) / UPV1H470MGD1TD

DESC: CAP ALUM 47UF 20% 50V RADIAL

?

DIGI-KEY PART: 493-7885-ND

QUANITY: 1

MFG: Nichicon / LGR2G221MELB40

DESC: CAP ALUM 220UF 20% 400V SNAP

?

DIGI-KEY PART: 493-7889-ND

QUANITY: 1

MFG: Nichicon / LGR2G101MELA30

DESC: CAP ALUM 100UF 20% 400V SNAP

?

DIGI-KEY PART: 399-PME261EB5470KR30-ND

QUANITY: 3

MFG: KEMET / PME261EB5470KR30

DESC: CAP FILM 0.047UF 10% 630VDC RAD

?

DIGI-KEY PART: 399-5410-ND

QUANITY: 1

MFG: KEMET / PME271Y422MR30

DESC: CAP FILM 2200PF 20% 1KVDC RADIAL

List of capacitors to rebuild HP 8920A power supply

#324

List of capacitors to rebuild HP 8920A power supply:

??

DIGI-KEY PART: 493-12239-1-ND

QUANITY: 4

MFG: Nichicon (VA) / UPM1H471MHD1TO

DESC: CAP ALUM 470UF 20% 50V RADIAL

?

DIGI-KEY PART: 493-6910-ND

QUANITY: 9

MFG: Nichicon / UHW1H102MHD

DESC: CAP ALUM 1000UF 20% 50V RADIAL

?

DIG-KEY PART: 493-11850-1-ND

QUANITY: 4

MFG: Nichicon (VA) / UPV1H470MGD1TD

DESC: CAP ALUM 47UF 20% 50V RADIAL

?

DIGI-KEY PART: 493-7885-ND

QUANITY: 1

MFG: Nichicon / LGR2G221MELB40

DESC: CAP ALUM 220UF 20% 400V SNAP

?

DIGI-KEY PART: 493-7889-ND

QUANITY: 1

MFG: Nichicon / LGR2G101MELA30

DESC: CAP ALUM 100UF 20% 400V SNAP

?

DIGI-KEY PART: 399-PME261EB5470KR30-ND

QUANITY: 3

MFG: KEMET / PME261EB5470KR30

DESC: CAP FILM 0.047UF 10% 630VDC RAD

?

DIGI-KEY PART: 399-5410-ND

QUANITY: 1

MFG: KEMET / PME271Y422MR30

DESC: CAP FILM 2200PF 20% 1KVDC RADIAL

Loading RFTOOLS files into an 8920A

#323

I just acquired a relatively early HP 8920A? (s/n 3291U00211) that had a defective power supply.? Once all of the electrolytic capacitors were replaced, it started up and passed all of its self tests!

Now, I am trying to figure out how to successfully load the RFTOOLS Procedures from the files posted here using an HP 9122C disk drive.?

I have had some success, but have run into a road block and I don't know how to proceed.

It would seem that the RFTOOLS Procedures that are posted in the Files section came from an HP 8920B since they use DOS file naming conventions.?

Apparently, the HP 8920A expects the Procedure files to use LIF file naming conventions based on this information from the Programming Guide:

The Test Set’s TESTS Subsystem uses the following file naming conventions:

? The c prefix is used to indicate a code file and is automatically prefixed onto the file

name when the program code file is stored for use by the TESTS subsystem.

? The p prefix is used to indicate a procedure file and is prefixed onto the file name when

the file is stored by the TESTS Subsystem

? The l prefix is used to indicate a library file and is prefixed onto the file name when the

file is created by the Program Development System for use with the TESTS Subsystem.

Armed with this information, I renamed the RFTOOLS files from:

RFTOOLS.LIB? ==> lRFTOOOLS
RFTOOLS.PGM ==> cRFTOOLS
RFTOOLS.PRC ==> pRFTOOLS

Once I made these changes, the RFTOOLS "Procedure File Name:" appears in the Load Test Procedures menu, but the Library does not.

When I try to run the Procedure and I get the following error message:

"Error reading procedure file.? Check file and media."

I have tried loading them into the HP 8920A using both a LIF formatted disk and a DOS formatted disk and I get the same result with both.? I get the same result with all of the other RF Tools program files as well.

I am wondering if the HP 11807A files for the HP 8920A are configured or coded differently from the HP 11807E files for the HP 8920B?

Does anyone have any thoughts as to what might be the secret to getting the RFTOOLS files properly loaded into the HP 8920A using an HP 9122C disk drive?

Thanks!

Brian

VOLTMETER SELF CALIBRATION FAILED (HP 8920B)

#322

hello to all the group

i have this problem with hp8920b , VOLTMETER SELF CALIBRATION FAILED. ERROR = 223, 0X000035f5. can anyone tell me which board to look at that causes this anomaly?? ?on the manuals is not mentioned anywhere this type of failure 0x000035f5

photo attached

thanks to those who can help me.

1.jpg

Re: Program to retrieve HP8920 calibration data...

#321

Hi all,

thanks to Jeff I was finally able to successfully download the calibration data from my 8920A. See attached in case you are interested.

I will also try the 8035, just need to make a suitable cable.

Regards,
Oliver

cal_dump.txt