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How to measure low resistance using delta mode. This video shows how to measure resistances (0.001 Ohms and below!) using a 2400 series smu and a 2182A nanovoltmeter.
This setup is made much more simple when using the Keithley Model 6220/6221 Current Source. You only have to press two buttons with that delta mode configuration.
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Keithley 181 Datasheet
μP controlled. • 5½-62-digit resolution. • Fully programmable. • Standard IEEE-488 interface. • Pushbutton zero. KEITHLEY 181 NANOVOLTMETER.
Source: accusrc.com
Date Published: 4/30/2022
View: 2585
Keithley 181 Nanovoltmeter – Price, Specs
Keithley 181 Nanovoltmeter · 10nV Sensitivity · 10nV/°C Stability · µP Controlled · 5-1/2 and 6-1/2 Digit Resolution · Fully Programmable.
Source: www.artisantg.com
Date Published: 12/28/2021
View: 6691
Keithley 181 – Nanovoltmeter – EEVblog
we have a Keithley 181 Nanovoltmeter at work, which was turned off for a while. I dn’t even know that this gear is in one of our lockers.
Source: www.eevblog.com
Date Published: 4/12/2021
View: 9593
Operator’s Manual Model 181 Digital Nanovoltmeter 01982 …
Operator’s Manual. Model 181. Digital Nanovoltmeter. 01982. Keithley Instruments,. Inc. Cleveland, Ohio, U.S.A.. Document. Number 32421 …
Source: www.opweb.de
Date Published: 8/2/2022
View: 4243
181 Keithley Meter Used – valuetronics.com
The Keithley 181 Nanovoltmeter proves highly accurate, stable and low noise readings from 10nV to 1000 VDC on seven voltage ranges.
Source: www.valuetronics.com
Date Published: 6/19/2022
View: 5230
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주제와 관련된 더 많은 사진을 참조하십시오 2400/2182A Measuring Low Resistances With Delta Mode. 댓글에서 더 많은 관련 이미지를 보거나 필요한 경우 더 많은 관련 기사를 볼 수 있습니다.
주제에 대한 기사 평가 keithley 181 nanovoltmeter
- Author: TektronixSupport
- Views: 조회수 4,431회
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- Date Published: 2018. 8. 23.
- Video Url link: https://www.youtube.com/watch?v=Sm2Xjx_aISY
Nanovoltmeter
I simply checked the noise on your 181A with the 3458A, in its 10mV A.C. range.
This did the job very well , if I remember right, it was about 0.5 mV rms, at the 1000x amplifier output
Frank
P.S.: That measurement was the ‘pump-out’, as Keithley used to call it, it’s nothing else but the chopper spike suppression, which has to be trimmed.
These 520µV, measured easily with the 3458A, were well within the limits, but that has nothing to do with the amplifier noise, and also a pre-amplifier is not necessary for fault-finding.
The error is definitely located in the pre-amp, as the 2V .. 1kV ranges were ok.
What’s really strange is that the excessive and sporadic noise, of 500nV up to several mV is in the 2mV range only (resolves 1nV or 6 digits), but it’s not visible at all in the 20mV range.
As the 20mV resolves 10nV, it should be visible on the 2nd last digit, but there’s nothing.
And the only difference in the setting is a reed relay, which is switched off (inactive) for the 2mV / 1000x range of the pre-amp.
Therefore, all semiconductors might probably be ok.
Either this reed relay is not ok ( so de-solder it in first place).
Or the whole pre-amp might oscillate at 1000x, which I didn’t check with an oscilloscope, only with my 34465As digitizing function, i.e. at 50kHz sampling rate / bandwidth.
Digital multimeter
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181 Keithley Meter
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