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Part needed for HP 8657A
Hello, I¡¯m looking for the bracket that holds the N type connector on the front panel, the short piece of hairline coax would also be a bonus. If anyone has a parts unit laying around I would sure
By KB2LMN · #122430 ·
Re: HP-8753E Option Key Installation Failure
Hi Joe: Thanks for offering to help. I am in the Washington DC metro area (Virginia). I have found some original AM290F010¡¯s, so I ordered those. Ideally, I would like the existing one read saved,
By Rich Miller · #122429 ·
Re: HP-8753E Option Key Installation Failure
Rich, Where are you located? I can read, archive and program the AM29F010 in PLCC if needed. I¡¯m in NW FL. Happy to help if I can. Joe Sent: Saturday, February 12, 2022 12:08
By J. L. Trantham · #122428 ·
Re: HP-8753E Option Key Installation Failure
Ok, you could perhaps use some #30 wire wrap wire as a probe on the socket itself The 0.025 square ww style/breadboard pins are way too big. Harvey
By Harvey White · #122427 ·
Re: HP-8753E Option Key Installation Failure
Yes, I have the tools, but need to dig in and see if there is an alternate point to attach to those lines. I have some pins that I use with my Logic Analyzer, but they are too thick to insert into the
By Rich Miller · #122426 ·
Re: FM Tuner alignment generator?..
With an HP generator with that stated distortion value, I can't imagine you can - though in my experience HP instrumentation often far exceeds its stated spec. But I never used an HP generator for
By Radu Bogdan Dicher · #122425 ·
Re: HP-8753E Option Key Installation Failure
Ah, depends on what the DMM does with pulses (if any). you don't need a logic analyzer except to perhaps trigger the scope.? I'd look at that line and the one it was shorted to, and better yet, the
By Harvey White · #122424 ·
Re: HP-8753E Option Key Installation Failure
I was simply probing the pin with a ProbeMaster fine point probe connected to my DMM. I do have a Logic Analyzer in my MDO3102, but I would have to see where the data line is coming from. I would be
By Rich Miller · #122423 ·
FM Tuner alignment generator?..
I have looked at the distortion specifications of the HP FM generators in this tread. They state distortion between 3 % to 1 % so far. The Sound Technology 1020 that I use has a stated distortion of
By Goran Finnberg · #122422 ·
Re: HP-8753E Option Key Installation Failure
Try Winslow Adaptics for chip layout converters. Sent from my iPad by banging a nail into a piece of wood...
By nigel adams · #122421 ·
Re: HP-8753E Option Key Installation Failure
Digital oscilloscope, storage oscilloscope, peak reading voltmeter, regular oscilloscope in a dim room. You're measuring the voltages (right now) as static voltages? That may not be helpful. PLCC
By Harvey White · #122420 ·
Re: [HP-Agilent-KI eysight-equipment] FM Tuner alignment generator?..
Panasonic and Meguro make some great units. I have a Panasonic - which in some communities is kind of a standard for this - and I hate to do this, but if people would know how good these are at
By Radu Bogdan Dicher · #122419 ·
Re: HP-8753E Option Key Installation Failure
Hi Harvey: I have no way to check the voltages while writing to it (at least not reasonably). I think its time to invest in a EEPROM writer/reader for PLCC. Rich
By Rich Miller · #122418 ·
Re: HP-8753E Option Key Installation Failure
If you can remove the eeprom, and then check the voltages when writing, that might tell you if the driver for DQ6 is damaged.? If you could read the EEPROM in another setting (PLCC adaptors are
By Harvey White · #122417 ·
Re: HP-8753E Option Key Installation Failure
Hello All: Today, I took another look at the issue, and made an interesting discovery. The AM29F010-70JC EEPROM Pin 20 (DQ6 line) was damaged while installing the PLCC package into the socket. I
By Rich Miller · #122416 ·
Re: 11710B Down converter
Futurlec has 2N2218 in stock. The ubiquitous 2N2219 is the same part, just higher hfe. HP knew about the 2N2219 so maybe they had trouble with instability. You could probably select for low
By Dave Wise · #122415 ·
HP8753C won't phase lock below 16MHz with A9 CC jumper in 'NORM'
I'm trying to recucitate an HP8753C. I replaced the YTO which was bad and was able to do the 'Source Pretune Correction Constants' adjustments procedure. This is done with the A9 jumper in the 'ALTER'
By vk2bea · #122414 ·
Re: Help E4402B 1DR Option not working
Dave, THANK YOU!!!! It worked!!!!!!! Best, Francesco K5URG Sent: Saturday, February 12, 2022 1:01 AM To: [email protected] Subject: Re:
By Francesco Ledda · #122413 ·
HP 8595E Restore and Tracking Generator Questions
Just want to start out by saying I have no background in EE but I am a ham who has restored an older tube radio (SB-101) as well as two Tektronix 24XX scopes (recapping both was the ultimate fix for
By Chad · #122412 ·
Re: HP 54645A internal battery
I was correct. ?There is no standalone battery in this scope. ?They are simply referring to the battery in the NVRAM module. ?This must have been a condition of the Navy contract to put that
By Manuel Maseda <mmaseda@...> · #122411 ·