Products > Test Equipment
Why some brands don't do LCR meters?
KungFuJosh:
--- Quote from: Kosmic on December 03, 2023, 12:05:16 am ---LCR meters rarely exceed 1Mhz. Normally with higher frequencies, people switch to a VNA.
--- End quote ---
Nah, that depends on who you're talking about- hobbyists, yeah. High freq LCRs are expensive AF. Many components are often tested with LCRs at higher frequencies.
--- Quote from: pdenisowski on December 04, 2023, 11:34:55 am ---The R&S LCX goes up to 10 MHz
--- End quote ---
Great, another $20,000 LCR I need to save up for. 😉
tszaboo:
--- Quote from: KungFuJosh on December 05, 2023, 05:15:34 am ---
--- Quote from: Kosmic on December 03, 2023, 12:05:16 am ---LCR meters rarely exceed 1Mhz. Normally with higher frequencies, people switch to a VNA.
--- End quote ---
Nah, that depends on who you're talking about- hobbyists, yeah. High freq LCRs are expensive AF. Many components are often tested with LCRs at higher frequencies.
--- Quote from: pdenisowski on December 04, 2023, 11:34:55 am ---The R&S LCX goes up to 10 MHz
--- End quote ---
Great, another $20,000 LCR I need to save up for. 😉
--- End quote ---
So is it time to make the NanoLRC, with a 4 inch screen and random specifications. Like having a part and making the specifications for that rather than the other way around?
KungFuJosh:
--- Quote from: tszaboo on December 05, 2023, 05:12:24 pm ---So is it time to make the NanoLRC, with a 4 inch screen and random specifications. Like having a part and making the specifications for that rather than the other way around?
--- End quote ---
I love the idea of a NanoLRC. It can live in the drawer with my TinySA Ultra.
I'm not sure what you're inferring from your second statement? Parts I was referring to being tested in higher frequencies are done that way because they need to be. The accuracy range of lower frequency LCR meters (even up to 200kHz) is quite limited. You can see this by looking at the accuracy reference charts that come with any respectable LCR.
TimFox:
Why do you say that the accuracy of lower-frequency LCR meters is limited?
Even an inexpensive DE-5000 achieves 0.3% (+2 digits) over much of its range at 100 and 1000 Hz for capacitance.
See https://www.deree.com.tw/de-5000-lcr-meter.html for full specifications.
KungFuJosh:
--- Quote from: TimFox on December 05, 2023, 06:05:26 pm ---Why do you say that the accuracy of lower-frequency LCR meters is limited?
Even an inexpensive DE-5000 achieves 0.3% (+2 digits) over much of its range at 100 and 1000 Hz for capacitance.
See https://www.deree.com.tw/de-5000-lcr-meter.html for full specifications.
--- End quote ---
That's not how it works. Switch to the tab that says specifications. For example, DCR is limited from 200Ω to 200MΩ with 1.0%+3 to 2%+3 accuracy respectively, and the sweet spot of .2%+2 between 2kΩ to 20kΩ. That's all low accuracy compared to lab grade LCR meters.
Here's the accuracy chart of my bench LCR:
The center box is the highest accuracy range. The farther out you go from there, the worse the accuracy gets (worst case on the chart still better than what the DE-5000 can do).
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