开云体育

HP8714B battery

Dave_G0WBX All Messages By This Member #101163 Hi. Well, I eventually ended up giving the faulty 8714B a new home, so now the fun begins. I've ordered a copy of the service manual and CLIP from Artek, but just so I've got a heads up, I see there is a faded text on the rear metalwork (that I'd not seen before) relating to an internal battery and it's life expectancy. OK, I plan to change it, but "If" that was to run down, what gets lost?? Anything that's going to be difficult to re-create?? If so, is there a way to archive any such data via the GPIB or floppy disk.? I don't yet have the dead tree user manual, that got misplaced. I've also got with it, a couple of 86200B detectors.?? Interestingly, even though the source output is anything between 20 and 40dB down on what it should be (looks like a classic open cct somewhere) the detectors are sensitive enough that I've managed to examine a UHF filter passband with it.? The through calibration routine correcting for the wayward source level, just fine! The great thing with this unit, is that the CRT is bright and crisp. Lastly, anyone (in the UK or EU) know of any spare plastic feet?? One has gone missing, and these are not the same design as the other common types that fall off at random. Regards to All. Dave G8KBV
Tam Hanna All Messages By This Member #101164 开云体育 Hello, with all military respect: very, very stupid approach. Both me and my former lab gypsy, as well as many of her and my friends, have lost COUNTLESS pieces of TMI to this train of thought. If the battery is fucked up, ?? r e p l a c e ?? it??? A S A P. Tam With best regards Tam HANNA Enjoy electronics? Join 15k7 other followers by visiting the Crazy Electronics Lab at On 2019. 12. 06. 18:49, Dave_G0WBX via Groups.Io wrote: toggle quoted message Show quoted text Hi. Well, I eventually ended up giving the faulty 8714B a new home, so now the fun begins. I've ordered a copy of the service manual and CLIP from Artek, but just so I've got a heads up, I see there is a faded text on the rear metalwork (that I'd not seen before) relating to an internal battery and it's life expectancy. OK, I plan to change it, but "If" that was to run down, what gets lost?? Anything that's going to be difficult to re-create?? If so, is there a way to archive any such data via the GPIB or floppy disk.? I don't yet have the dead tree user manual, that got misplaced. I've also got with it, a couple of 86200B detectors.?? Interestingly, even though the source output is anything between 20 and 40dB down on what it should be (looks like a classic open cct somewhere) the detectors are sensitive enough that I've managed to examine a UHF filter passband with it.? The through calibration routine correcting for the wayward source level, just fine! The great thing with this unit, is that the CRT is bright and crisp. Lastly, anyone (in the UK or EU) know of any spare plastic feet?? One has gone missing, and these are not the same design as the other common types that fall off at random. Regards to All. Dave G8KBV
Caesar Valenti All Messages By This Member #101176 I don't believe the battery was critical for anything...other than save/recall registers and, of course, the clock. In any case, there are schematics available on Keysight's web page...although the quality of the schematics are very poor.? The vendor did not use a high enough resolution and no one wanted to spend more money on something that had no return on investment.
Dave_G0WBX All Messages By This Member #101183 开云体育 From: Caesar Valenti Date: Fri, 06 Dec 2019 19:31:38 PST I don't believe the battery was critical for anything...other than save/recall registers and, of course, the clock. In any case, there are schematics available on Keysight's web page...although the quality of the schematics are very poor.? The vendor did not use a high enough resolution and no one wanted to spend more money on something that had no return on investment. Thanks Caesar. I've now got the service manual and CLIP from Artek as a download (backed up on my NAS) and already have figured out some places to look to locate the low source output level issue.? All I need next, is "Time" to do it! Thanks again. ??? Dave. -- Created on and sent from a Unix like PC running and using free and open source software:
Maciej Kawalkowski All Messages By This Member #127838 The important coefficients are stored in? Eprom , The nonvolatile memory is for storing settings, time, Ibasic files and measurements.

Previous Topic Next Topic