Someone writing on eevblog has manufactured a replacement 53131 display using LEDs. It directly replaces the VFD but requires an additional 5V connection from the front panel pcb. Price is ~$100. I've no connection etc. etc. but have one on order. https://www.eevblog.com/forum/testgear/hp-agilent-53131a-53132a-vfd-to-led-conversion/

Very interesting in fact this device! As owner of an old 53132A I would like to get one for replacement, but there is no way at the moment to get it beeing located in Germany, a pity! It looks like only private persons can ship to Germany w/o problems ?? regards, Arnold, DK2WT Am 18.01.2025 um 13:50 schrieb Adrian Godwin via time-nuts: > Someone writing on eevblog has manufactured a replacement 53131 display > using LEDs. It directly replaces the VFD but requires an additional 5V > connection from the front panel pcb. Price is ~$100. > > I've no connection etc. etc. but have one on order. > > https://www.eevblog.com/forum/testgear/hp-agilent-53131a-53132a-vfd-to-led-conversion/ > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe send an email to time-nuts-leave@lists.febo.com -- Diese E-Mail wurde von AVG-Antivirussoftware auf Viren geprüft. www.avg.com

The VFDs are notorious for fading after a few years. More and more of these display replacements are coming on line. A few years ago, I replaced the CRT in my HP 8920A communications analyzer with an LCD two color replacement (there is no color function in the monochrome CRT, only grey shades. It brings new life to an old machine. It was about $350, and although it took a little work, it was not out of reach for a beginner. The same guy is doing other HP CRT replacements. Bob -----Original Message----- From: Adrian Godwin via time-nuts <time-nuts@lists.febo.com> Sent: Saturday, January 18, 2025 7:50 AM To: Discussion of precise time and frequency measurement <time-nuts@lists.febo.com> Cc: Adrian Godwin <artgodwin@gmail.com> Subject: [time-nuts] 53131/2/81 display Importance: High Someone writing on eevblog has manufactured a replacement 53131 display using LEDs. It directly replaces the VFD but requires an additional 5V connection from the front panel pcb. Price is ~$100. I've no connection etc. etc. but have one on order. https://www.eevblog.com/forum/testgear/hp-agilent-53131a-53132a-vfd-to-led-c onversion/ _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe send an email to time-nuts-leave@lists.febo.com

For the record: that LCD replacement Bob refers to is called NewScope. It is produced and sold by SimmConnlabs. http://www.simmconnlabs.com/ I have one in my HP spectrum analyser and it works very nicely. Wilko > On 20 Jan 2025, at 04:50, rbenward--- via time-nuts <time-nuts@lists.febo.com> wrote: > > The VFDs are notorious for fading after a few years. More and more of these > display replacements are coming on line. A few years ago, I replaced the > CRT in my HP 8920A communications analyzer with an LCD two color replacement > (there is no color function in the monochrome CRT, only grey shades. It > brings new life to an old machine. It was about $350, and although it took > a little work, it was not out of reach for a beginner. The same guy is > doing other HP CRT replacements. > > Bob > > -----Original Message----- > From: Adrian Godwin via time-nuts <time-nuts@lists.febo.com> > Sent: Saturday, January 18, 2025 7:50 AM > To: Discussion of precise time and frequency measurement > <time-nuts@lists.febo.com> > Cc: Adrian Godwin <artgodwin@gmail.com> > Subject: [time-nuts] 53131/2/81 display > Importance: High > > Someone writing on eevblog has manufactured a replacement 53131 display > using LEDs. It directly replaces the VFD but requires an additional 5V > connection from the front panel pcb. Price is ~$100. > > I've no connection etc. etc. but have one on order. > > https://www.eevblog.com/forum/testgear/hp-agilent-53131a-53132a-vfd-to-led-c > onversion/ > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe send an > email to time-nuts-leave@lists.febo.com > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe send an email to time-nuts-leave@lists.febo.com

Ditto -- I upgraded our 8753D and 8591EM with NewScope LCDs and they work perfectly and are a nice upgrade. Highly recommended. I also worked with Simmconlab's principal towards developing an LCD replacement for the SRS SR780 & SR785, but unfortunately that would have required a new version of his FPGA-based controller because of the somewhat unusual way that SRS did video in those units, and the effort ended there :-( --Andrew -------------------------------- Andrew E. Kalman, Ph.D. On Sun, Jan 19, 2025 at 11:50 PM Wilko Bulte via time-nuts < time-nuts@lists.febo.com> wrote: > For the record: that LCD replacement Bob refers to is called NewScope. It > is produced and sold by SimmConnlabs. http://www.simmconnlabs.com/ > > I have one in my HP spectrum analyser and it works very nicely. > > Wilko > > > On 20 Jan 2025, at 04:50, rbenward--- via time-nuts < > time-nuts@lists.febo.com> wrote: > > > > The VFDs are notorious for fading after a few years. More and more of > these > > display replacements are coming on line. A few years ago, I replaced the > > CRT in my HP 8920A communications analyzer with an LCD two color > replacement > > (there is no color function in the monochrome CRT, only grey shades. It > > brings new life to an old machine. It was about $350, and although it > took > > a little work, it was not out of reach for a beginner. The same guy is > > doing other HP CRT replacements. > > > > Bob > > > > -----Original Message----- > > From: Adrian Godwin via time-nuts <time-nuts@lists.febo.com> > > Sent: Saturday, January 18, 2025 7:50 AM > > To: Discussion of precise time and frequency measurement > > <time-nuts@lists.febo.com> > > Cc: Adrian Godwin <artgodwin@gmail.com> > > Subject: [time-nuts] 53131/2/81 display > > Importance: High > > > > Someone writing on eevblog has manufactured a replacement 53131 display > > using LEDs. It directly replaces the VFD but requires an additional 5V > > connection from the front panel pcb. Price is ~$100. > > > > I've no connection etc. etc. but have one on order. > > > > > https://www.eevblog.com/forum/testgear/hp-agilent-53131a-53132a-vfd-to-led-c > > onversion/ > > _______________________________________________ > > time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe send > an > > email to time-nuts-leave@lists.febo.com > > _______________________________________________ > > time-nuts mailing list -- time-nuts@lists.febo.com > > To unsubscribe send an email to time-nuts-leave@lists.febo.com > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe send an email to time-nuts-leave@lists.febo.com

I didn't see the 53132A on Simmonnlabs.com but I ordered the one listed on eevblog and am pleased with the results. https://www.ebay.com/itm/326404635023 On Mon, Jan 20, 2025 at 3:06 AM Wilko Bulte via time-nuts < time-nuts@lists.febo.com> wrote: > For the record: that LCD replacement Bob refers to is called NewScope. It > is produced and sold by SimmConnlabs. http://www.simmconnlabs.com/ > > I have one in my HP spectrum analyser and it works very nicely. > > Wilko > > > On 20 Jan 2025, at 04:50, rbenward--- via time-nuts < > time-nuts@lists.febo.com> wrote: > > > > The VFDs are notorious for fading after a few years. More and more of > these > > display replacements are coming on line. A few years ago, I replaced the > > CRT in my HP 8920A communications analyzer with an LCD two color > replacement > > (there is no color function in the monochrome CRT, only grey shades. It > > brings new life to an old machine. It was about $350, and although it > took > > a little work, it was not out of reach for a beginner. The same guy is > > doing other HP CRT replacements. > > > > Bob > > > > -----Original Message----- > > From: Adrian Godwin via time-nuts <time-nuts@lists.febo.com> > > Sent: Saturday, January 18, 2025 7:50 AM > > To: Discussion of precise time and frequency measurement > > <time-nuts@lists.febo.com> > > Cc: Adrian Godwin <artgodwin@gmail.com> > > Subject: [time-nuts] 53131/2/81 display > > Importance: High > > > > Someone writing on eevblog has manufactured a replacement 53131 display > > using LEDs. It directly replaces the VFD but requires an additional 5V > > connection from the front panel pcb. Price is ~$100. > > > > I've no connection etc. etc. but have one on order. > > > > > https://www.eevblog.com/forum/testgear/hp-agilent-53131a-53132a-vfd-to-led-c > > onversion/ > > _______________________________________________ > > time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe send > an > > email to time-nuts-leave@lists.febo.com > > _______________________________________________ > > time-nuts mailing list -- time-nuts@lists.febo.com > > To unsubscribe send an email to time-nuts-leave@lists.febo.com > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe send an email to time-nuts-leave@lists.febo.com