activity to the MAX5417L EV kit to enable easy trigger-

ing of an oscilloscope. The Factory Reset button pro-

grams the volatile and nonvolatile memory to midscale

(wiper position = 127).

Software Startup

The MAX5417L EV kit software automatically searches

for the CMODUSB and the MAX5417L EV kit during

startup. The status indicator shows if the interface

board and the MAX5417L EV kit are operational. If the

interface board is not found, verify that the command

module and the USB cable are connected properly,

power is applied to the EV kit, and click the YES button

on the retry-connection message box.

The nonfunctional GUI can be viewed by clicking the

NO button on the retry-connection message box when

attempting to start the software without the CMODUSB

being connected. Restart the software with the com-

mand module and EV kit properly connected for normal

operation.

Wiper Position

The trackbar in the Potentiometer Control box can be

used to change the wiper position between the H and L

end points. Use the computer mouse, arrow keys, or

page-up/page-down keys to move the trackbar

between the 256 position points. The wiper position can

also be changed by entering the numerical position (0

to 255) in the Volatile edit fields. A trackbar or Volatile

edit field change writes to the volatile memory (0x11

command) and the wiper position is updated with the

data sent. The data in the nonvolatile memory remains

unchanged. The position of the wiper is shown in the

Volatile edit fields. The top Volatile field shows the

wiper position with respect to the H end point and the

bottom Volatile field shows the wiper position with

respect to the L end point. During EV kit power-up, the

data (wiper position) in the nonvolatile memory is trans-

ferred to the volatile memory and the wiper position is

updated. The Volatile and Non-Volatile edit fields dis-

play “??” after initializing the EV kit software because

the MAX5417L does not transmit data to the master.

MAX5417L Evaluation Kit/Evaluation System

4

_______________________________________________________________________________________

Figure 1. MAX5417L EV Kit Software Main Window