Hi,
I'm just trying to output a single sinwave (pulse) on AnalogOutput with nidaqmx in Python. For some reason, the pulse is always 1ms long, no matter how long the pulse is. Maybe I have an obvious error in reasoning. The code looks like to following:
import matplotlib.pyplot as plt
import numpy as np
import nidaqmx
import nidaqmx.system
system = nidaqmx.system.System.local()
system.driver_version
for device in system.devices:
print(device)
x = np.linspace(0, 2 * np.pi , num=100) #generate x values for sinwave
sinewave = np.sin(x)*10 #generate sinwave
plt.plot(x, sinewave) #plot sinewave
nidaqmx.constants.AcquisitionType.FINITE:10178 #set output to finite
with nidaqmx.Task() as task:
task.ao_channels.add_ao_voltage_chan('Dev2/ao0') #set device
task.timing.cfg_samp_clk_timing(1e6) #set rate
print('1 Channel N Samples Write: ') #print text
print(task.write(sinewave)) #print number of samples sent
task.start() #start task
task.wait_until_done(timeout=10.0) #wait till task is done
task.stop() #stop task
When I change the size of the sinewave, the final pulse will still be just 1ms.
x = np.linspace(0, 2 * np.pi , num=100)
x = np.linspace(0, 4 * np.pi , num=100)
x = np.linspace(0, 2 * np.pi , num=150)
All arrays x will lead to different looking pulses, but the pulses are all 1ms long. I bet it is sth. obvious I'm missing,... but I don't get it.
Thank you in advance for your help!
