Product specifications

Instrumentation Laboratory Exercise 43
The speed and voltage should be recorded as a function of time, and
the motor voltage should be re applied to the motor causing it to spin
up rapidly. Once it attains full speed, the power should once again be
removed from the motor, and the speed should continue to be
recorded as the motor spins to a stop.
5.2 Circuit setup
Feed the sense resistor voltage (V
i
) into channel 101 and the
foto- sensor voltage (V
s
) into channel 102 of the DAQ. As always
ensure that the circuit ground is fed into the ground (pin 39) of the
DAQ.
5.3 VEE programming
The foto sensor channel will be set up as a unipolar, 10 V, single
ended (NRSE) input. Instead of sampling the signal through the
"MEAS:VOLT:DC?" command we will have to set it up to read an
entire trace or waveform. This is an array of data read from the
appropriate channel at a given frequency. We need to set up both the
number of points required as well as the frequency. To set it up use
the following commands the same way we did in Laboratory Exercise
4:
M
5 V
V
i
R
1
R
2
R
3
D
1
Q
1
5 V
V
s
R1 = 0.5 Ω, 5 W
M = 5 V PM-DC motor
R2 = 500 Ω
R3 = 50 kΩ
D1 and Q1 are IRPD