| Products > Test Equipment |
| The worst products from HP and Tektronix. |
| << < (4/13) > >> |
| T-R:
Keysight EXR/MRX: loud like jumbo jet. They replace power supply with fanless in service center as modification of product. But it is still to loud for me. If I compare with S series. |
| T-R:
Handheld products, like DMM's. OLED problems and other fails. It is not good for brand like Keysight. |
| Gavin Melville:
Tek: TDS540. Somebody went and bought a truckload of crappy capacitors to make these. It cost a fortune in 1991 new, from memory about 35k. Noisy front ends. No schematic then, but I think you can get one now. Can be restored to life by changing all of the capacitors, 100s of them. 2246: Unreliable power supply, but otherwise good, full of unobtainable hybrids. Keithley (Tek now). 2450 SMU. Very expensive piece of kit, crashes all the time, never writes the error to the log. Tek tech support always asks what’s in the Log. Firmware updated, no difference. Too new to be this bad. Tek: DPO5034. UI from hell, changing from Auto trigger to normal needs a mouse. Touch screen alignment only so-so. Otherwise a very good scope. HP35670A Dynamic Signal Analyser, the soft keys up the right side of the screen fail. My employer has half a dozen of these, all have the same fault. I’m not sure how they built it, but suspect the sealed soft key strip was jigged in space and the rest of the instrument built around it. [edit] HP1650. Forgot this, expensive (16k), 1000 samples deep, for the time a sort of functional logic analyser. Used a proprietary floppy format, and none of the original disks will now boot. If they would I could make another boot disk. Not PC compatible in any way. Not worth the effort, and the UI from hell. |
| AVGresponding:
--- Quote from: T-R on January 15, 2023, 06:05:09 am ---Handheld products, like DMM's. OLED problems and other fails. It is not good for brand like Keysight. --- End quote --- Couldn't agree more, with this. I have several HPAK handhelds, and the only one I like wasn't even made by them, but by Escort (U1401B). |
| MadTux:
HP 8112A/8116A: No PLL locked instruments build around unreliable ASICs by German design team, which sucked. HP 8082A: Same garbage as 8112A/8116A, but with added suckiness with sliding switches, that destroy the PCB contact traces over time. HP 8656A/8657A: Cheap design, construction and poor performance, slightly better on HP 8657B.... Forgot: HP3457A: Display sucks, cheap plastics, bad keyboard, stupid preamp/attenuator design and +/- 3V full range ADC that gives a noisy instrument. HP3458A: Soooo much fun, if you have failed U180 ;-D Tek: 7L13, 7L14: Fricking spectrum analyzer that is squeezed into 3 plugin compartments, with no regards to serviceability whatsoever... Anything with storage tube nowadays, was the only technology back then, but totally outdated nowadays and a pain to use Their CCD based ADC, 2kPts DSOs, not great released, equally outdated nowadays as deep memory is about the only reason why I would use a DSO over a classic CRO (Tek 7000) Keithley: Poor plastic quality on their old, brown instruments..... Classic Fluke: Most structural parts are made from cheap plastics that fall apart, over time (8505A/8506A, Fluke 5440B...) And their stupid delete/substitute options!!! |
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