a vi for 8563E that allows me to change it from volts to watts

[iconpro]

i need help creating a vi that allows me to change the amplitude from volts to watts.

[Peter Hedin]

Whit the analyser 8563 you can measure and report dBm value of the signal,
to convert to watts you have to divide the dBm with 10 and then take 10
rised to x

ex 30dBm / 10 = 3 10x = 1,000 mW = 1Watt

"iconpro" skrev i meddelandet
news:506500000008000000EB730000-1042324653000@exchange.ni.com...
> i need help creating a vi that allows me to change the amplitude from
> volts to watts.

[iconpro]

Do you have a VI for Labview that allows me to change volts to watts?

[iconpro]

Do you have a VI for Labview that allows me to change volts to watts? or a VI that allows me to switch between the volts and watts in amplitude?

[Peter Hedin]

I have no Vi for that, but is simple to do.

If you mean to switch between Voltage and Power in a pure resistive
measurment
you use a simple formula P(watts) = E(volt) * I(ampere) or E = P / I

Put in these formulas in a Case box and wire a button to the Case, if TRUE
then
P = E * I and if FALSE then E = P / I

If you want to get amplitude measurment from 8563 you need to talk to the
Unit with
GPIB communication, then you can send a GPIB command that retrive the dBm
value
of the markers position. Use a command that seraches for highest amplitude
(Peak search)
then retrive the markers amplitude. I don´t have the exact commands in mind.
You can also get a software driver to Labview for your HP8563 and then you
have lots
of premade solotions to communica
te and retrive the information you want.


"iconpro" skrev i meddelandet
news:506500000005000000E6CB0000-1042324653000@exchange.ni.com...
> Do you have a VI for Labview that allows me to change volts to watts?
> or a VI that allows me to switch between the volts and watts in
> amplitude?