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Re: 54831M Booting Problem
Hi zgoode, I probably won't help much but I can only point you to a very similar problem with a Tektronix scope. Please see this
By wojciechoo@... · #151265 ·
HP 4957A Protocol Analyzer - looking for disks
Hey all, I'm playing with an HP 4957A protocol analyzer and looking for some of the software that came with the ISDN/T1 pods. I know CuriousMarc has some of the standard disks but curious if anyone
By Jeffrey Golas · #151264 ·
54831M Booting Problem
I'm working on restoring my 54831M, but have run into a weird error.? With the original Win95 (maybe 98, don't remember which one its on), I can't get it to boot past the Infinium splash screen.? I
By zgoode · #151263 ·
where to find a manual for the older 6268A? (plenty out there for the B)
I came across one and it still works, but... Not sure I have the strapping right on the back terminal strip.
By John Griessen · #151262 ·
Re: 8591E CAL AMPTD failure
Yves, Excellent! I’m going to need to find some connectors I have the caps and resistors needed. Andrew
By KB2LMN · #151261 ·
Re: Manuals for an HP3456B DMM?
Hi. It's worth checking the DC power rails for the GPIB logic section.? It's possibly isolated from all the "measurement" analogue/digital stuff. My old 3438A had "a lot" of 50Hz ripple on the GPIB
By Dave_G0WBX · #151260 ·
Re: Manuals for an HP3456B DMM?
Regarding the meter that only returns values, could it be that the ‘talk only’ switch is set and therefore the instrument is not accepting commands. As was mentioned earlier, it could simply be a
By nigel adams · #151259 ·
Re: 8591E CAL AMPTD failure
Hi Andrew I redid the alignment of the crystal filters of my 8591A. I used a 10nF capacitor and a 91 Ohm surface mount resistor to build the 3 CRYSTAL SHORT. Here are the results obtained; it
By Yves Tardif · #151258 ·
HP8935 Spectrum Analyzer Markers
Is there a way to take control of the spectrum analyzer marker position on a HP8935 and dial it around like you can on a basic spectrum analyzer? Thanks Jeff KC8VFN
By Jeff Acree · #151257 ·
Re: 8591E CAL AMPTD failure
Hi Andrew, This is the detail of the "short crystal", and yes, it is possible to do it easily. Yves De :
By Yves Tardif · #151256 ·
Re: Manuals for an HP3456B DMM?
And deoxit the address dip switches. They tend to take a set... -Chuck Harris <SteveHx@...> wrote:
By Chuck Harris · #151254 ·
Re: 8594E Cal Signal not Found ?
I should also make a correction that I keep saying "EEPROM" out of habit, when I actually mean "EPROM" in relation to this older equipment.? My usual work is in embedded microcontrollers. -mark
By Mark Litwack · #151253 ·
Re: Manuals for an HP3456B DMM?
Could be, but I'd try some deoxit on the connectors first, especially if it hasn't been used in a while. Steve Hendrix
By Steve Hendrix · #151252 ·
Re: Manuals for an HP3456B DMM?
It turns out that one of my meters is not accepting GPIB commands. It can return the display value, but no other commands are accepted. I am about half way through porting my 3455A tool to the 3456A
By BobH · #151251 ·
Re: 8495G Step ATT OPT 011 5V Cable Pinout
TNX, what pin number is the Minus?
By 4X6MU · #151250 ·
Re: 8495G Step ATT OPT 011 5V Cable Pinout
Minus is used to switch the attenuators Am 06.04.2025 um 18:50 schrieb 4X6MU via groups.io:
By DF6NA Rainer · #151249 ·
Re: 8495G Step ATT OPT 011 5V Cable Pinout
TNX Rainer, Which pin is (-) or GND? ILAN 4X6MU
By 4X6MU · #151248 ·
Looking for crystal test fixture 41901A details
Does anyone have 41901A SMD crystals PI-network test fixture? https://www.keysight.com/gb/en/assets/9018-01432/user-manuals/9018-01432.pdf I would like to have a good close-up photos of what the
By Leo Bodnar · #151247 ·
Re: Manuals for an HP3456B DMM?
Thanks for the inputs on the issues for this meter. I have written tools for several "R2D2" instruments. The command set is similar to the 3455A which I have already written a tool set for. One thing
By BobH · #151246 ·
Re: Manuals for an HP3456B DMM?
I'm not sure how luck plays into programming the 3456A, it is a very rigidly defined state machine that is well documented in the operation manual. The 3456A is programmed using an slightly enhanced
By Chuck Harris · #151245 ·