NI 5112 input impedence

[wang]

Hi,

What are 50 ohm and 1 mega ohm input impendence resistor stand for? Can you give example?

[AllanS]

Hello Wang!

There is an excellent explanation of this in the help file.  Goto Start>>Program Files>>National Instruments>>NI-SCOPE>>Documentation>>NI High Speed Digitizers Help

Click on the index tab and type in 'Impeadance'  the first document that comes up explains what your asking.  Have a great day!

Allan S.

National Instruments

[zou]

If I don't call niScope Configure Chan Characteristics.vi,  what's the default input impendence setting?

[AllanS]

Hello zou!

The default input impeadance is 1Mohm.  It can be found by double clicking on the VI and seeing what the input impedance combobox is set too.  Have a great day!

Allan S.

National Instruments

[zou]

>The default input impeadance is 1Mohm.  It can be found by double clicking on the VI and seeing what the input impedance combobox

>is set too.  Have a great day!

I want to know the default value for the digitizer, not the VI.  Thanks for reply.

[AllanS]

Hello zou!

The default input impedance for the scope is 1MOhm.  Have a great day!

Allan S.

National Instruments