Chief Delphi - roboRIO manual possible confusion

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jnicho15

04-01-2015 11:18

roboRIO manual possible confusion

On page 9 of the manual, it reads:

Quote:

Note The NI roboRIO contains an internal 120 W termination resistor between L (GRN) and H (YEL).

It appears that this "W" means ohm based off of this wikipedia entry:

Quote:

Where the [symbol] font is not supported, a W is displayed instead ("10 W" instead of "10 Ω", for instance). As W represents the watt, the SI unit of power, not resistance, this can lead to confusion.

Just thought this would be useful to know

richwong

04-01-2015 11:52

Re: roboRIO manual possible confusion

Why didn't they just write out "ohm"?

Tungrus

04-01-2015 12:00

Re: roboRIO manual possible confusion

Quote:

Originally Posted by jnicho15 (Post 1420933)

On page 9 of the manual, it reads:

It appears that this "W" means ohm based off of this wikipedia entry:

Just thought this would be useful to know

...and all these years I was thinking W is for Watts - unit for power! One mre change I have to deal with this season!

jnicho15

04-01-2015 12:24

Re: roboRIO manual possible confusion

FYI: W DOES NOT mean ohm, it is a font error

BenDSterling

04-01-2015 13:03

Re: roboRIO manual possible confusion

W still stands for watt. It showed a W in this instance because of a font error. Since the ohm symbol was not supported by the font, a W was put in its place.

just to be clear, W stands for Watt, not ohm.

Al Skierkiewicz

05-01-2015 08:56

Re: roboRIO manual possible confusion

jnicho15,
Can you show which manual you are looking at for this info? If it is a pdf, it is likely you do not have the greek font loaded and have selected an option where Adobe inserts what it thinks is the correct symbol.

jnicho15

05-01-2015 09:58

Page 9 ofhttps://decibel.ni.com/content/servl...r%20Manual.pdf

Al Skierkiewicz

05-01-2015 11:30

Re: roboRIO manual possible confusion

Yep, it displays as a W.

Michael Hill

05-01-2015 11:34

Re: roboRIO manual possible confusion

We've got one of these on the RoboRIO!

http://m.ebay.com/itm/DALE-25-5-OHM-...-/400251566962

Al Skierkiewicz

05-01-2015 11:39

Re: roboRIO manual possible confusion

Quote:

Originally Posted by Michael Hill (Post 1421933)

We've got one of these on the RoboRIO!

http://m.ebay.com/itm/DALE-25-5-OHM-...-/400251566962

Have you included a fan as well?

crake

05-01-2015 17:51

Re: roboRIO manual possible confusion

Quote:

Originally Posted by Al Skierkiewicz (Post 1421936)

Have you included a fan as well?

Heh - please don't dissipate 120W in roboRIO in any form.

That is a typo/font issue. I'll get a request in to fix this.

Al Skierkiewicz

06-01-2015 08:06

Re: roboRIO manual possible confusion

Chris,
Mike linked to a 120 watt resistor with fins on it.

crake

06-01-2015 08:57

Re: roboRIO manual possible confusion

Quote:

Originally Posted by Al Skierkiewicz (Post 1422588)

Chris,
Mike linked to a 120 watt resistor with fins on it.

Yup - pretty sure that's not included with roboRIO.

FrankJ

06-01-2015 09:19

Re: roboRIO manual possible confusion

Is it against the rules to smear heat transfer paste all over the RoboRIO?

crake

06-01-2015 09:33

Re: roboRIO manual possible confusion

Quote:

Originally Posted by FrankJ (Post 1422616)

Is it against the rules to smear heat transfer paste all over the RoboRIO?

Might make robot inspection interesting.

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