EVAL-AD7793

Rev. 0 | Page 6 of 16

MAIN WINDOW

Menu Bar

File

This allows the user to read previously stored data for display or

analysis, write the current set of data to a file for later use, and

exit the program.

About

This provides information on the revision of software used.

Buttons

Reset

This allows the user to reset the AD7793 and set the registers to

the power-up conditions as specified by the software (channel =

AIN1(−)/AIN1(−), bias voltage generator enabled on AIN1(−),

gain = 64, update rate = 16.7 Hz, internal reference).

Exit

This allows the user to exit the software. It serves the same

purpose as Quit in the File pull-down menu.

Sample

This allows the user to read a number of samples from the

AD7793. Noise analysis is then performed on the samples.

These samples can be stored for further analysis. The sample

size is entered in the Num Samples text box.

Continuous

This allows the user to read a number of samples continuously.

The software gathers a number of samples as specified by the

Num Samples

text box, performs noise analysis on the samples,

and gathers the next group of samples.

Registers

This allows the user to access the configuration register, mode

register, and IO register.

Other Registers

This allows the user to access the ID register, status register,

offset register, and full-scale register.

Quick Analysis

This selects the Quick Analysis window. The Quick Analysis

window gives the user access to the following subset of control

bits: Channel, Update Rate, Gain, and Reference. For access to

all control bits, click Registers or Other Registers.

Temp Demo

This allows the user to access the temperature demonstration

software.

Samples/Analysis

This serves the same purpose as the Sample button.

Waveform

The gathered conversions are displayed in graph form.

Histogram

The gathered samples are used to generate a histogram

Codes

The gathered samples can be displayed in codes or in voltage

format. When the Codes option is selected, the values are

displayed as code. The Codes button changes to Volts. To

display the information in volts, click Volts.

External Reference

By default, the internal reference is used. To use an external

reference, set Reference in the Registers window to External.

The value of the external reference should be entered in the

External Reference

text box.