National Instruments NI 9478 - Manual (Page 16)

NI 9478 Operating Instructions and Specifications 16 ni.com
Example One
You are driving a load with 2.0 meters of cable through a cycle in
which the NI 9478 is on and passing 1.25 A of current for 40
μ s,
then off for 10 μ s. The output period is 50 μ s (40 μ s + 10 μ s) so the
output frequency is 20 kHz. The channel uses 14.8% of the total
power budget, as shown in the following equation.
4% 1.25
2
( ) 0.12% 2.0 0.2 – ( ) 1.25
2
( ) 0.04% 1.25 1 + ( ) + [ ]20 + 14.8% =