USB2PMB1 datasheet(10/15 Pages) MAXIM

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USB2PMB1# Adapter Board

Evaluates: Munich (USB2PMB1#)

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.

Plot Configuration Options

ADC Counts: This option plots the ADC code

itself on the Y-axis with the number of samples

on the X-axis.

ii)

Voltage: This option plots the converted volt-

age value.

iii)

Current: Plots the current measured across

the 250Ω shunt resistor present in Campbell.

iv)

4-20mA to Temp: Plots the temperature mea-

sured from IFM TA3231 temp sensor. This

sensor sinks/ sources current proportional to

the temperature measured. The shunt current

and the temperature measured would also be

indicated the bottom of the GUI.

FFT: This option plots the FFT measurement on

the Y-axis vs. frequency on the X-axis.

vi)

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

number occurrence.

vii)

History Length: This option allows the user to

view the history data by choosing the history

length for viewing the data.

Average: Drop-down box menu to choose to aver-

age of the discrete values sampled. For instance,

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.

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 13.

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

ii)

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.

iii)

Volt per LSB: 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

Volt per LS

B =

−

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