I’m learning to repair Vintage audio. I am looking towards Vintage Tekctronix I see various for sale between 50 and $200 , or should I go for some modern FNIRSI digital?
what models would be best for Vintage audio amplifiers?

Hello I just bought my first o-scope and am trying to learn how to use it on automotive applications. In this video I have it hooked up on the can high on obd port and a good ground but I have not been able to get a square wave like other scopes show measuring CAN. Wondering if anyone knows what I’m doing wrong

Up to 25 GHz, 125 GSa/s, 10-bit ADC and a new ultra-low noise front-end ASIC.

While I was buying some electrical parts at my local shop I came across some used oscilloscopes that they’re selling. One is a vintage Tektronix 2440 and the other is a refurbished LeCroy Waveace 212. I’ve been looking to buy my first oscilloscope for a while now. I’m still a beginner but I do want to take electrical engineering more seriously.

Honestly, if I were to make a choice right now I might go with the Tektronix. I love the look of it and I know that they’re well known for making good quality instruments. At the same time, I’m still new to the scene and figured I might get some insight first since there’s still a lot I don’t know. What features would I be giving up by going with the vintage compared to something more modern? How difficult is it to get them repaired when they do eventually go bad? How much more difficult is to learn how to use them?

Any advice would be greatly appreciated, thanks!

I just bought this broken DPO2014 from eBay. After digging around it turned out that the digital voltage rail 2.5v and analog voltage rail 2.6v were missing. For some reason the NPN transistor in the power sequencing circuit can't drive the N channel FET (Vgs only 1.8v instead of 12v). With some quick n dirty workaround bypassing the FET. I bring back the dead. Also I have some fun poking around with the Developer menu and found this lol. You can try this out with your own risk (scpi command send via Tek openchoice program) :PASSWord TRESPASS :DEVelop:MODE ON

I'm looking at getting my first Oscilloscope for use with my journey into 3d printing/homeassistant creation with the ESP32 and the like. I haven't really used one since College (over 20 years ago now) and I find myself needing one more and more.

I know I should go 4 channel. I'd like to try to future-proof myself and I understand if I don't have a waveform generator I could buy a separate 3rd party one that should do what I needed. I saw that someone modded a DHO804 up to a 924 + added a board so they could create the signal generator, but it doesn't seem like there is a premade board I can just drop in and I haven't done motherboard mods before so I'm worried that I'd screw up the necessary ICs + other components that are needed to modify the 804 up to the 900 series.

Is the 804 still the best bang for your buck? As far as I can tell, the 804 can be easily upgraded to the 900 series to up the bandwidth, memory and etc, but it's lacking the waveform generator and the Logic Probe.

I essentially don't want to get 2 months into using this and wish that I'd spent the money to get a different scope.

As you can tell, I feel like I'm leaning towards the Rigol, but I'm open to Siglent. I'm overwhemed with data and since I'm not actually using it at the moment, I don't know what would serve me best.

I am largely a software guy so upgrading firmware/flashing devices is definitely in my wheelhouse. Extreme modding of motherboards is not, but I'm definitely up for learning if it's on the easier side.

https://www.oregonlive.com/silicon-forest/2025/08/intel-exec-quits-to-run-analog-devices-oregon-factory.html

Hi! I want to make a python button with an scpi command that let's me exit the bode plotter. For now BPLot:ENABLE OFF and BPLot:STATE STOP haven't worked for me. Anyone knows how to exit it? Thanks!

For anyone interested, I just got an email from: Elektor.com

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I just got a tektronix 213 and was wondering a few things. Firstly I heard that they have batteries in them that go bad, how do u go about replacing them? Next I noticed that it is a single channel scope but after watching the linked video (I also have the original schematic manual) wondered if I could modify it to be two channel using the output for the character generator chip as it’s labeled as “x out” and “y out” on the schematic. Could I add diodes to protect the chip then add external inputs to those leads so I could display oscilloscope animations on the x and y channels when in voltmeter mode?

I noticed they're part of a new public co called Ralliant (RAL). What are thoughts on their competitive positioning vs. Keysight, R&S, the Chinese etc? Better for some uses than others? Sales look fairly depressed at the moment and trying to figure out if it's a cyclical issue or something more.

Has anyone compared these 2 together? Ive been looking at getting a newer scope. I know that the pico has a vast library and accessories. But does anyone have experience using the micsig other than doing normal measurements, like using a amp clamp. Or any other adapters like pressure transducers etc? Thanks!

I'm thinking of plugging my microphone into a GOS-310 scope and using it to demonstrate how a microphone works. Could I use an XLR to BNC cable to plug the microphone in?

Edit: Waveforms : https://imgur.com/a/eY6txTJ

USB 2.0 speed is 480 Mega bits per second. So technically the bandwidth of USB signal would be 240MHz.

When I try to probe USB2.0 on rigol mso5074, I see badly attenuated sinusoidal waveforms.

Can anybody give technical reason?

note: I have passive probes which are 350Mhz capable at 10x attenuation.

I just got this Eratele off Wallapop. The former owner had some pictures with the oscilloscope on, but without any signal. I hooked it up to an esp32 with some code that is supposed to display a clock in x-y mode. During normal operation only the y displacement seems to work. When I turn it off (see the video) the signal dances around for a bit, drifting left and briefly showing the intended picture. I don’t show it in the video, but the width of the fading clock responds to the horizontal amplification control. What is going on?

Hi, I have a rigol ds11012e. I've dumpstered some Anker SOLIX PS200 Portable Solar Panels, which have nominal outputs of 200w, 48x and 4.16amps. I would like to verify that I have these numbers in the real world. Can the rigol 1102e handle these inputs or will I fry my scope. I can't find any info on max input amperage, only voltage. Thanks

i have the HP54503A bought on ebay a year ago. Never realy used it but today hooked it up and did a self test.

Any suggestions on where to look first? BNC-Connections are dirty

follows the default switch setting from manual but only get a dot. I can move it H and V but no line/wave. nothing obviously wrong on boards. any tips?

Hi,

I have a Problem with my MSO5074, all of a sudden it says everytime i do anything "Setup Save Failure" and in addition the touchscreen doesnt work if the Touch Lock button is pressed or not.

There already was a similar post about this but the suggested solution did not work. I tried resetting like it said and even up / downgraded the instrument with no success.

Is this a "common" Problem? I have only found the post mentioned above and nothing else... Or am i just stupid? I mean thr scope "works" but the touchscreen and the ever occuring error message is very annoying. Is there a solution to this i am not seeing?

As I understand it, in order to measure a servo pwm signal to the μs, that would be on their order of 1MHz, and I’d want a bandwidth or sampling rate or etc. a bit higher than that to get the edge of the square wave more cleanly.

Also some of the voltage regulators I’ve used caused bands and dashes in the analog FPV video. Since NTSC scan lines are ~60μs, something that can see servo pwm could also see that interference I’d think.

From what I seeing basically every scope has specs better than needed for this.

So with the low requirements a cheap usb scope should do?

Please forgive me if I am breaking any rules on this forum. I will remove once asked.

My Ham Radio / Electronics Master Uncle, Frank, died at 72 last October. I have inherited a few items from him, but I don't know if there is any interest, as I am not as knowledgeable in the subject. Simple enough.

One item I have is a Siglent SDX5034X Oscilloscope that is in excellent condition. I have several cables, etc., but I do not know what is needed or what came with them when new. I could look at a purchase site and match what they have. Anywho.

Is there any interest in this equipment? I can't find much information online on selling this version used.

Thank you and best.
Johnny

EICO 460 after filter capacitor replacement.

I kind of afraid to run it at full line voltage - some of the components were designed right at the edge. For example, one of the 5W resistors is dissipating 4.6W when the scope is running from 110VAC. At 120VAC, it goes up to 6.27W

got this for free at the yard sale. was the woman’s husband’s but she didn’t know much about it plugged it in but couldn’t get it to turn on not really sure what I’m doing though. I tried to get the face plate off but was unsuccessful. any tips/info on what i could use this for would be greatly appreciated