User manual

MCP355X SENSOR APPLICATION

DEVELOPER’S BOARD USER’S GUIDE

Chapter 4. DataView

4.1 OVERVIEW

DataView is a graphical data analysis tool that interfaces to many of Microchip’s

stand-alone A/D converter demonstration or evaluation boards via USB interface. Each

installation of Dataview is specific to the A/D converter and will contain one or more of

the following graphical output windows:

• Scope Plot

• Histogram

• Auxiliary Data

4.2 SCOPE PLOT WINDOW

The scope plot window graphs the A/D output as a function of sample or time. Each

consecutive sample is added to the right of the data set and when the sample size is

full, the scope plot will scroll to the left. The y-axis is displayed as the ADC code and

the x-axis is given as sample number. The sample size can be changed in the

configuration window.

FIGURE 4-1: Scope Plot Window.

Note: IMPORTANT! For the MCP355X Sensor Application Developer’s Board,

the USB microcontroller (PIC18F4550) is collecting post-processed data

from the PIC16F877. By pressing the push button switches on the

reference design and changing the processing that occurs on the

PIC16F877, the data shown on DataView is also changed.