Re: [time-nuts] FW: HP-5732A operation with no CRT display.
Hi Lester, I had this problem with the 5372A at work. As others have noted, documentation of the CRT unit is for sure leaving a lot to wish for when comparing how well the rest of the unit is documented. We could however fairly quickly see the problem, and it turned out that a capacitor had let out it's grey smoke. So, we replaced it and it fired up and worked. Took care of a little trimming and it went out the lab again. The CRT unit is fairly standard as for monochrome CRT goes, so nothing very advanced. I usually do not service CRTs but me and my colleague did not found it very challenging in the end. One just needs to be careful with voltages. It was a fair bit of unscrewing to "get to it" as I recall, so both top and bottom lid had to be popped, as well as the side lid which hides screws. Besides the CMOS-battery, the CRT failure is the only other service I've had to do to the 5372As. The "GUI" of the 5372A leaves a few things to desire, but it has it's good points too. The GPIB command structure may be daunting at first, but if one really reads the programming manual, your really get to learn how everything is processed from the hardware bits, because the preferred interface just dumps one of a number of subsets of data register read-outs, and all the processing one needs to do it explained in detail. It also becomes apparent that a sneak-feature is that 100 ps resolution may be possible to support by replacing the interpolator boards. If I had the time, I would do a modern hardware to grab data on the fast-port connectors and dump them out over Ethernet. This would be the way to keep the counter operating continuously with fast data gathering, but without being limited to the 8192 samples long memory, which when full being processed by the 68k processor before another run could be triggered. Offboarding that the existing CPU would be used to set the instrument up, and then all the data is gathered and processed in somewhat more modern hardware. Cheers, Magnus On 2020-06-28 16:22, Lester Veenstra via time-nuts wrote: > > > TimeNuts: > > > > I have a HP 5732A with a defective CRT driver board. Since this (A17) > is undocumented (as no repairable) I am of course trying to work my way > around it to see if the defect is findable. > > > > Any A17 boards loose out there, or even better, documentation? > > I see good H and V sync inputs as well as the ZMod (Video data) into the > board, bur the drive for the two deflection coils is not what I would > expect. > > > > Trace is some where up off crt but with vertical coils disconnected, still > no horizontal line. > > With no drives connected to H & V coils, dim spot in center. Spot moves well > in both axis with low voltage DC applied. > > > > > > However, it occurs to me; Does anyone have HPIB code that allows use of the > instrument without the GUI user interface? > > I seem to recall some discussion of “raw data” dumps turned into useful > measurements. > > > > > > Lester B Veenstra K1YCM MØYCM W8YCM 6Y6Y > > les...@veenstras.com > > > > 452 Stable Ln (HC84 RFD USPS Mail) > > Keyser WV 26726 > > > > GPS: 39.336826 N 78.982287 W (Google) > > GPS: 39.33682 N 78.9823741 W (GPSDO) > > > > > > Telephones: > > Home: +1-304-289-6057 > > US cell+1-304-790-9192 > > Jamaica cell: +1-876-456-8898 > > > > > > ___ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
Re: [time-nuts] FW: HP-5732A operation with no CRT display.
Thanks Don, but I suspect we both have the same manual. Lester B Veenstra K1YCM MØYCM W8YCM 6Y6Y les...@veenstras.com 452 Stable Ln (HC84 RFD USPS Mail) Keyser WV 26726 GPS: 39.336826 N 78.982287 W (Google) GPS: 39.33682 N 78.9823741 W (GPSDO) Telephones: Home: +1-304-289-6057 US cell +1-304-790-9192 Jamaica cell: +1-876-456-8898 -Original Message- From: time-nuts [mailto:time-nuts-boun...@lists.febo.com] On Behalf Of DON MURRAY via time-nuts Sent: Sunday, June 28, 2020 9:03 PM To: time-nuts@lists.febo.com Cc: DON MURRAY Subject: Re: [time-nuts] FW: HP-5732A operation with no CRT display. I'll check my 5372A manual to see if I can be of any help. Don W4WJ On Sunday, June 28, 2020 ed breya wrote: I have a 5372A, and way back when I got it, I of course looked for the manual and think I got the pdf. As I recall, this was from the era where HP still provided full "real" manuals with all the schematics etc. The exception sometimes is if the entire display is an OEM unit, treated as a single component, and minimally documented. I don't recall much of the guts, as it's been a lot of years since I saw the inside. Do you have the regular manual? Is the display an OEM unit, or actually HP-made? If it's all HP, then it seems the schematics should be around somewhere, unless maybe accidentally left out of the printing somehow. Ed ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there. ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there. ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
Re: [time-nuts] FW: HP-5732A operation with no CRT display.
Ed: Like many cards and parts in this unit; Not field repairable, so no schematics or parts list. I do have the "full" maintenance manual. It appears to be a OEM Taiwan "Part", the CRT and driver board. Lester B Veenstra K1YCM MØYCM W8YCM 6Y6Y les...@veenstras.com 452 Stable Ln (HC84 RFD USPS Mail) Keyser WV 26726 GPS: 39.336826 N 78.982287 W (Google) GPS: 39.33682 N 78.9823741 W (GPSDO) Telephones: Home: +1-304-289-6057 US cell +1-304-790-9192 Jamaica cell: +1-876-456-8898 -Original Message- From: time-nuts [mailto:time-nuts-boun...@lists.febo.com] On Behalf Of ed breya Sent: Sunday, June 28, 2020 5:25 PM To: time-nuts@lists.febo.com Subject: Re: [time-nuts] FW: HP-5732A operation with no CRT display. I have a 5372A, and way back when I got it, I of course looked for the manual and think I got the pdf. As I recall, this was from the era where HP still provided full "real" manuals with all the schematics etc. The exception sometimes is if the entire display is an OEM unit, treated as a single component, and minimally documented. I don't recall much of the guts, as it's been a lot of years since I saw the inside. Do you have the regular manual? Is the display an OEM unit, or actually HP-made? If it's all HP, then it seems the schematics should be around somewhere, unless maybe accidentally left out of the printing somehow. Ed ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there. ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
Re: [time-nuts] FW: HP-5732A operation with no CRT display.
Dave:I have a "not working, parts only" unit coming. I will see if A17 is working on that unit. If I get one working, I think I can signal trace to the problem unit, using the good one as reference Lester B Veenstra K1YCM MØYCM W8YCM 6Y6Y les...@veenstras.com 452 Stable Ln (HC84 RFD USPS Mail) Keyser WV 26726 GPS: 39.336826 N 78.982287 W (Google) GPS: 39.33682 N 78.9823741 W (GPSDO) Telephones: Home: +1-304-289-6057 US cell+1-304-790-9192 Jamaica cell: +1-876-456-8898 -Original Message- From: time-nuts [mailto:time-nuts-boun...@lists.febo.com] On Behalf Of VE7HR Sent: Sunday, June 28, 2020 9:01 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] FW: HP-5732A operation with no CRT display. Lester, I think looking at the parts list in the Service manual from Artek it’s a bought out all in one unit. If I recall the BOM has one line item. Have you checked with Walter at Sphere? He has the next PN in the sequence which is a Sony Color display. Or check with Newscope for a LCD replacement. My new to me 5372A has a bright screen but I noticed it glitched a few times yesterday. The size changed for an instant a couple of time but other wise is working. Dave Sent from my iPhone > On Jun 28, 2020, at 5:50 PM, ed breya wrote: > > I have a 5372A, and way back when I got it, I of course looked for the > manual and think I got the pdf. As I recall, this was from the era where HP > still provided full "real" manuals with all the schematics etc. The exception > sometimes is if the entire display is an OEM unit, treated as a single > component, and minimally documented. I don't recall much of the guts, as it's > been a lot of years since I saw the inside. > > Do you have the regular manual? Is the display an OEM unit, or actually > HP-made? If it's all HP, then it seems the schematics should be around > somewhere, unless maybe accidentally left out of the printing somehow. > > Ed > > ___ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there. ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
Re: [time-nuts] FW: HP-5732A operation with no CRT display.
I'll check my 5372A manual to see if I can be of any help. Don W4WJ On Sunday, June 28, 2020 ed breya wrote: I have a 5372A, and way back when I got it, I of course looked for the manual and think I got the pdf. As I recall, this was from the era where HP still provided full "real" manuals with all the schematics etc. The exception sometimes is if the entire display is an OEM unit, treated as a single component, and minimally documented. I don't recall much of the guts, as it's been a lot of years since I saw the inside. Do you have the regular manual? Is the display an OEM unit, or actually HP-made? If it's all HP, then it seems the schematics should be around somewhere, unless maybe accidentally left out of the printing somehow. Ed ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there. ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
Re: [time-nuts] FW: HP-5732A operation with no CRT display.
Lester, I think looking at the parts list in the Service manual from Artek it’s a bought out all in one unit. If I recall the BOM has one line item. Have you checked with Walter at Sphere? He has the next PN in the sequence which is a Sony Color display. Or check with Newscope for a LCD replacement. My new to me 5372A has a bright screen but I noticed it glitched a few times yesterday. The size changed for an instant a couple of time but other wise is working. Dave Sent from my iPhone > On Jun 28, 2020, at 5:50 PM, ed breya wrote: > > I have a 5372A, and way back when I got it, I of course looked for the > manual and think I got the pdf. As I recall, this was from the era where HP > still provided full "real" manuals with all the schematics etc. The exception > sometimes is if the entire display is an OEM unit, treated as a single > component, and minimally documented. I don't recall much of the guts, as it's > been a lot of years since I saw the inside. > > Do you have the regular manual? Is the display an OEM unit, or actually > HP-made? If it's all HP, then it seems the schematics should be around > somewhere, unless maybe accidentally left out of the printing somehow. > > Ed > > ___ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
Re: [time-nuts] FW: HP-5732A operation with no CRT display.
I have a 5372A, and way back when I got it, I of course looked for the manual and think I got the pdf. As I recall, this was from the era where HP still provided full "real" manuals with all the schematics etc. The exception sometimes is if the entire display is an OEM unit, treated as a single component, and minimally documented. I don't recall much of the guts, as it's been a lot of years since I saw the inside. Do you have the regular manual? Is the display an OEM unit, or actually HP-made? If it's all HP, then it seems the schematics should be around somewhere, unless maybe accidentally left out of the printing somehow. Ed ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
Re: [time-nuts] FW: HP-5732A operation with no CRT display.
Lester, Might that be a 5372A? 😉 I have it’s brother, the 5371A. I turn it on every few months to make sure it’s still working. I’m going to be away for at least a week but will look for my documentation when I return. My 5371A is on the disposal list as I start my downsizing. Steve WB0DBS > On Jun 28, 2020, at 9:29 AM, Lester Veenstra via time-nuts > wrote: > > > > TimeNuts: > > > >I have a HP 5732A with a defective CRT driver board. Since this (A17) > is undocumented (as no repairable) I am of course trying to work my way > around it to see if the defect is findable. > > > > Any A17 boards loose out there, or even better, documentation? > > I see good H and V sync inputs as well as the ZMod (Video data) into the > board, bur the drive for the two deflection coils is not what I would > expect. > > > > Trace is some where up off crt but with vertical coils disconnected, still > no horizontal line. > > With no drives connected to H & V coils, dim spot in center. Spot moves well > in both axis with low voltage DC applied. > > > > > > However, it occurs to me; Does anyone have HPIB code that allows use of the > instrument without the GUI user interface? > > I seem to recall some discussion of “raw data” dumps turned into useful > measurements. > > > > > > Lester B Veenstra K1YCM MØYCM W8YCM 6Y6Y > > les...@veenstras.com > > > > 452 Stable Ln (HC84 RFD USPS Mail) > > Keyser WV 26726 > > > > GPS: 39.336826 N 78.982287 W (Google) > > GPS: 39.33682 N 78.9823741 W (GPSDO) > > > > > > Telephones: > > Home: +1-304-289-6057 > > US cell+1-304-790-9192 > > Jamaica cell: +1-876-456-8898 > > > > > > ___ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
Re: [time-nuts] FW: HP-5732A operation with no CRT display.
Lester, All I can find is the PN 2090-0209 for the whole assembly. Dave VE7HR On Sun, Jun 28, 2020 at 7:29 AM Lester Veenstra via time-nuts < time-nuts@lists.febo.com> wrote: > > > TimeNuts: > > > > I have a HP 5732A with a defective CRT driver board. Since this (A17) > is undocumented (as no repairable) I am of course trying to work my way > around it to see if the defect is findable. > > > > Any A17 boards loose out there, or even better, documentation? > > I see good H and V sync inputs as well as the ZMod (Video data) into the > board, bur the drive for the two deflection coils is not what I would > expect. > > > > Trace is some where up off crt but with vertical coils disconnected, still > no horizontal line. > > With no drives connected to H & V coils, dim spot in center. Spot moves > well > in both axis with low voltage DC applied. > > > > > > However, it occurs to me; Does anyone have HPIB code that allows use of > the > instrument without the GUI user interface? > > I seem to recall some discussion of “raw data” dumps turned into useful > measurements. > > > > > > Lester B Veenstra K1YCM MØYCM W8YCM 6Y6Y > > les...@veenstras.com > > > > 452 Stable Ln (HC84 RFD USPS Mail) > > Keyser WV 26726 > > > > GPS: 39.336826 N 78.982287 W (Google) > > GPS: 39.33682 N 78.9823741 W (GPSDO) > > > > > > Telephones: > > Home: +1-304-289-6057 > > US cell+1-304-790-9192 > > Jamaica cell: +1-876-456-8898 > > > > > > ___ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > -- 72 de Dave VE7HR ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
Re: [time-nuts] FW: HP-5732A operation with no CRT display.
Lester Veenstra via time-nuts writes: I assume you mean HP-5372A and not 5732A ? > I see good H and V sync inputs as well as the ZMod (Video data) into the > board, bur the drive for the two deflection coils is not what I would > expect. The 5372 uses a weird video-format, 19KHz horizontal and 60Hz vertical, but it might be possible to find a LCD panel which can do that. There are two bits of video, "half intensity" and "full intensity", so a color panel would be required. > However, it occurs to me; Does anyone have HPIB code that allows use of the > instrument without the GUI user interface? I've never quite gotten the hang of HPIB with the HP5372, the HPIB is very geared towards moving the raw binary data, and not very much towards "remote front-panel". You can get a bitmap of the screen using "INTERFACE;PSOURCE,DISPLAY;PRINT", but it is not particularly fast and comes with gratis PCL escapes, but it does work. If you dump the raw measurements, that's precisely what you get, and you will need to do all the processing, math and plotting yourself. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 p...@freebsd.org | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
