Enter Your Name and today's date:
Ed Bokhour, 11/4/15
Enter the part numbers and serial numbers of the units under test:
SDPCB Interface 6.1, s/n 02. SDPCB 6.1 Driver s/n RPI15310002, SDPCB Video 6.1 s/n RPI15310001. Using wrapper 6.1.2 (San Diego).
When the test is complete, save this notebook as a new file, indicating the date, as "HK_Variance_Results_YYMMDD.ipynb". Alternatively, export the notebook as a PDF file, then clear all entries and outputs.
Remember that whenever you power-cycle the Observatory Simulator, you should set preload=True below.
When you are running this notebook and it has not been power cycled, you should set preload=False.
Run the following cell to get the FPE loaded:
In [9]:
from tessfpe.dhu.fpe import FPE
from tessfpe.dhu.unit_tests import check_house_keeping_voltages
fpe1 = FPE(1, debug=False, preload=True, FPE_Wrapper_version='6.1.1')
print fpe1.version
fpe1.cmd_start_frames()
fpe1.cmd_stop_frames()
if check_house_keeping_voltages(fpe1):
print "Wrapper load complete. Interface voltages OK."
In [10]:
def set_fpe_defaults(fpe):
"Set the FPE to the default operating parameters and return a list of the default values"
defaults = {}
for k in range(len(fpe.ops.address)):
if fpe.ops.address[k] is None:
continue
fpe.ops.address[k].value = fpe.ops.address[k].default
defaults[fpe.ops.address[k].name] = fpe.ops.address[k].default
return defaults
set_fpe_defaults(fpe1)
Out[10]:
In [4]:
from numpy import var, sqrt
samples=100
from tessfpe.data.housekeeping_channels import housekeeping_channels
# We make sample_data a dictionary and each value will be a set of HK
# data, with key = sample_name.
sample_data = {}
# For later:
signal_names = []
signal_values = []
signal_data = {}
variance_values = {}
for i in range(samples):
# Get a new set of HK values
house_keeping_values = fpe1.house_keeping["analogue"]
data_values = house_keeping_values.values()
# Add the new HK values to the sample_data dictionary:
sample_number = "sample_" + str(i)
sample_data[sample_number] = data_values
# Get the signal names for use later
signal_names = housekeeping_channels.keys()
# Get list of units for later
units = {}
for name in housekeeping_channels:
units[name] = housekeeping_channels[name]['unit']
"""Assign the set of all HK values of the same signal (e.g. substrate_1)
to the dictionary 'signal_data'"""
for k in range(len(signal_names)):
# Build the list 'signal_values' for this signal:
for i in range(samples):
sample_number = "sample_" + str(i)
signal_values.append(sample_data[sample_number][k])
# Add signal_values to the signal_data dictionary:
signal_data[signal_names[k]] = signal_values
signal_values = []
""" Now get the square root of the variance of each of the 'signal_values' in the
signal_data dictionary and put the result in the 'variance_values'
dictionary."""
for name in signal_data:
variance_values[name] = sqrt(var(signal_data[name]))
#print units[name]["unit"]
#print signal_data
#print units[name]
print '{0:26} {1:.3} {2}'.format(name, variance_values[name], units[name])
# Results will be displayed below, in engineering units (root-variance).
# Watch ObsSim LEDs for activity.