header = ["#Time(UnixTime)"]
if counter:
header += ["BeatFrequency(Hz)"]
if multi:
header += ["Voltage(V)"]
header += ["\n"]
out.write(" ".join(header))
# Do logging until stopped by Ctrl-C
while True:
try:
start = time()
counter.initMeasure()
if multi:
volts = float(multi.ask("READ?"))
freq = counter.getFreq()
now = time()
if multi:
measuretime = (now + start) / 2
else:
measuretime = start
elapsed = now - start
if counter and multi:
result = array([[measuretime, freq, volts]])
savetxt(out, result)
print "%f Hz / %f V / %f s" %(freq, volts, elapsed)
elif counter:
result = array([[measuretime, freq]])
savetxt(out, result)
print "%f Hz / %f s" %(freq, elapsed)
