DPU/DO - Page 11 - REV. 5/25/00
Establishing Communications
After communication connections and power connections (if needed) have been made, turning
the System Diagnostic Unit on will cause it to perform an internal self-test, the internal beeper
will sound and one of two startup screens will be displayed. If the user holds down any key on
the keypad while the unit is being powered on, the screen adjustment display will appear. This
screen is shown below.
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S P A C E S A V E R D I A G N O S T I C U N I T 3 . 6
S C R E E N A D J U S T M E N T
P r e s s a K e y :
< U P > B r i g h t e r < D O W N > D i m m e r
< E S C A P E > t o E x i t
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-- SCREEN ADJUSTMENT DISPLAY --
While this screen is being displayed, the intensity of the LCD screen can be adjusted. Pressing
the UP key on the keypad will increase the intensity of the display, while pressing the DOWN
key will decrease the intensity. The intensity is variable from very dim to a blacked-out screen.
When the user is satisfied with the displayed intensity, pressing the ESCAPE key will exit the
user to the initial communication test screen.
When the user powers up the System Diagnostic Unit without holding down a key, or presses the
ESCAPE key when exiting the screen adjustment area, the initial communication test screen is
displayed. This screen, which is shown below, informs the user that Power Pro/EC300/EC400
communication in the module is being tested for completeness and proper termination.
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S P A C E S A V E R D I A G N O S T I C U N I T 3 . 6
T E S T I N G C O M M U N I C A T I O N
o n e m o m e n t p l e a s e . . .
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-- Initial Communication Test Screen --
Upon completion of the initial communication test, one of three screens will be displayed. The
first of these is the communication fail screen that is shown at the top of the next page.
