| Products > Test Equipment |
| Do I need more test equipment? |
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| slugrustle:
Have you had the need to measure higher bandwidth current waveforms with your scope? A current clamp and/or rogowski coil might be useful, depending on how much of the power stuff you get into with motors. Those things can get pricey though. Similarly, differential voltage probes can come in handy for the scope if you need to measure voltages that aren't earth referenced. Whoever said multiple multimeters had a good idea. Personally, I am quite fond of bench multimeters, but electronics is both my job and my hobby, so I put a lot into it. Might not be worth it for your use cases. |
| armandine2:
... you (EUR7) could keep to a modest expenditure or dig a bit deeper - half the fun of the hobby is the exotic kit |
| ledtester:
Just a couple of comments... --- Quote from: chrisb741 on September 19, 2023, 04:13:30 am ---Have a decent oscilloscope I mainly use to decode serial signals. --- End quote --- I'd get a (cheap) sigrok compatible USB logic analyzer (cost around $10). They only do 24 Msps but they are much, much more convenient to use on long data streams. You can also get higher bandwidth versions if you need it. Concerning VNAs -- I'd wait until you really find a need for one. They have evolved quite a bit recently so I would expect either significant improvements or cost reductions in the near future. |
| chrisb741:
Can't see myself needing much speed for a logic analyser, most monitoring would be real world based, pwm duty cycle and other digital in/outputs. Can easily use a trigger with the 4 channel scope to record analog signals of needed. Ordered a mini PC, amazon gave me a $50 discount coupon. Ordered a DMM, they had none in stock and gave me a free upgrade to the next model. How much power do much projects use, not much, under 50W max. That eez bb3 looks like an interesting project TinySA wow cheap, they any good? |
| Berni:
USB logic analyzers are mostly useful for looking at digital communication buses that have a lot going on. For looking at a PWM signal a scope is much more suitable. This is because they usually can steam data to the PC or even use compression so you can record Giga or even Tera samples worth of data in a single capture. So it allows you to record for multiple seconds or even multiple minutes of traffic. So no need to trigger on the area of interest and keep rerunning your test, you can just record it all and then scroll trough it at your own pace. Looking trough this much data is much easier with a mouse as opposed to knobs on a scope. So for that reason i prefer it when looking at something like a SPI or I2C sensor or picking apart a UART firmware update protocol or something. I never used the TinySA, but i do have two versions of the TinyVNA. Very nice little tool for measuring the impedance of things at high frequency, certainly the ultimate low cost tool for antenna tuning for example. Tho careful with stepping into RF as you quickly start collecting a lot of RF accessories (cables, adapters, terminators, attenuators...etc). |
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