Author Topic: Meaning of letter r as measurement unit in Agilent U1733C?  (Read 995 times)

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Offline Per HanssonTopic starter

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Meaning of letter r as measurement unit in Agilent U1733C?
« on: November 29, 2020, 05:42:58 pm »
Hi, hoping someone can tell me what I have done wrong in this setup:
I am measuring a 10000µF capacitor, and I have disconnected the wires to it so it is just the capacitor in being measured...
The ZLCR meter was unable to auto-identify the capacitor so I selected capacitance mode manually, and 100Hz as this is filtering a bridge rectifier.
The meter then shows a value of 9.384rnF
I have no idea what the "r" stands for, and from this reading if we skip the "r" and just look at it as nF it would be very obviously bad.
But my Fluke 28-II shows it as 9810µF and with it out of circuit I have 8VAC of ripple, with it in circuit the ripple is in the millivolts range, so the cap is ok.
What is going on here, is it user error?

 

Offline golden_labels

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Re: Meaning of letter r as measurement unit in Agilent U1733C?
« Reply #1 on: November 29, 2020, 05:49:15 pm »
Possibly that is meant to be ‘m’, not ‘rn’? An ‘m’ made from ‘n’ with additional leg. 9.384mF = 9384µF.
People imagine AI as T1000. What we got so far is glorified T9.
 
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Online Benta

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Re: Meaning of letter r as measurement unit in Agilent U1733C?
« Reply #2 on: November 29, 2020, 05:51:28 pm »
It's showing mF, but the LCD layout has to accommodate both nF and mF at the same place, leading to this somewhat "creative" display.

 
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Offline Per HanssonTopic starter

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Re: Meaning of letter r as measurement unit in Agilent U1733C?
« Reply #3 on: November 29, 2020, 05:57:50 pm »
Uhh, wow, glad I asked then!
Damn meter could just show 9384µF then to not confuse me!
But then we would not have this thread, hope it helps someone else!
 

Offline golden_labels

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Re: Meaning of letter r as measurement unit in Agilent U1733C?
« Reply #4 on: November 29, 2020, 09:37:01 pm »
Your eyesight is too good! Agilent thought no one will notice that gap between segments. ;)
People imagine AI as T1000. What we got so far is glorified T9.
 

Offline Dave

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Re: Meaning of letter r as measurement unit in Agilent U1733C?
« Reply #5 on: November 30, 2020, 01:31:53 am »
Damn meter could just show 9384µF then to not confuse me!
Shame on Agilent to assume that the users of their products understand SI prefixes!
<fellbuendel> it's arduino, you're not supposed to know anything about what you're doing
<fellbuendel> if you knew, you wouldn't be using it
 

Offline Per HanssonTopic starter

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Re: Meaning of letter r as measurement unit in Agilent U1733C?
« Reply #6 on: November 30, 2020, 05:15:42 pm »
Your eyesight is too good! Agilent thought no one will notice that gap between segments. ;)
Haha thanks but I am not sure about that: I just got new glasses this Friday however the measurement was taken before that, and my old glasses where quite a bit off ;)

Damn meter could just show 9384µF then to not confuse me!
Shame on Agilent to assume that the users of their products understand SI prefixes!
Are you being a smartass or did you not even read the thread?!
 


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