Datasheet

Maxim Integrated │ 11
www.maximintegrated.com
USB2PMB1# Adapter Board
Evaluates: Munich (USB2PMB1#)
h) Build Average of: Drop-down box menu to choose
to average of the discrete values sampled. For
instance, if 16 is selected, it takes the first 16
samples of the sample-shot the user takes, then
averages them and shows the number in the text
box below. If history is selected as well, it adds
this number as a datapoint to the history. If all is
selected, it uses all the samples taken, as selected
in No of Samples to build the average.
3) Real Time Scope: The scope present on the left side
of the GUI represents the measured data with number
of samples in x-axis and y-axis is selected from the
available plot view options from the bottom of the GUI
environment.
a) Scope Options: On top right corner of the scope or
the Histogram plot, plot settings options are avail-
able for the user to play/pause, zoom in/out, pan,
print, save, and waveform settings.
b) Plot View Options
i) PlotCounts: This option plots the ADC code
itself on the y-axis with the number of samples
on the x-axis.
ii) Plot Volts: This option plots the converted volt-
age value.
iii) PlotCurrent: Plots the current measured
across the 250Ω shunt resistor present in
Campbell.
iv) PlotTemp: Plots the temperature measured
from IFM TA3231 temp sensor. This sensor
sinks/ sources current proportional to the tem-
perature measured. The shunt current and the
temperature measured would also be indicated
the bottom of the GUI.
c) History
i) History Length: This option allows the user to
view the history data by choosing the history
length for viewing the data.
ii) Show History of average: Checking this
option allows the user to view entire data in
history up to the history length chosen.
d) Show Histogram: This pushbutton option allows
user to view the resultant output in Histogram.
The X-axis is ADC code and the Y-axis is the num-
ber occurrence.
e) Plots in Windows: This generates three other win-
dows in additions to the scope viewer in the GUI.
The three windows apart from the regular scope
viewer include:
i) ADC ode of the current reading
ii) FFT measurement
iii) Histogram measurement
f) Save plot to file: Saves the current plots to file.
g) Calibrate: If the user wishes to calibrate, this option
enables a real-time calibration for each channel
and each signal input range; hence, providing a
robust calibration/measurements at each single
physical channel and each input signal range. See
Figure 14.
i) Save Settings to File: Saves the current set-
tings for measurement.
ii) Read Settings from File: Reads the last set-
tings that are in the file. If one wishes to reset to
factory default, then the appropriate .ini file has
to be deleted.
iii) Shunt Resistor value: This option allows
entering the exact value of shunt resistance in
Cupertino board. This also allows the user to
change the resistance and scale the current
measured
iv) Offset: The offset calibration is done by forc-
ing the minimum voltage at input (based on
the selection of input range) to obtain the plot
counts. This plot counts value, if other than 0,
should be fed in the offset digit tab.
v) Volt per Code: This option calibrates for gain
error. The volt per code calibration is done by
forcing approximately 80% of specified voltage
at the input to obtain the code. Here there are
seven different input ranges. Use appropriate
range selection for calibration.
=
−
FullScale Input Range
16
Volt pe
V
2
r code
1