While entering a passcode with the keypad, the key presses are acknowledged by a “beep”. The digits entered are
not displayed. The cursor moves along, filling the position with an X to indicate that a digit has been entered. The
<DEL> key can be used to delete the last digit. The <ENTER> key press is required to enter the passcode into the
system.
The Action Keys, ON, OFF, AUTO, ENABLE, DISABLE and the five Panel Control Keys may have operator access
levels associated with them. If such a key is pressed with an insufficient access level, a message will inform you that
the action was not taken and the key press is ignored. The user will have to select the Main Function Menu option
to increase the access level before using the key. (See Log In Procedure for details.)
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The Acknowledge Keys may also require passcodes to acknowledge abnormal conditions. If you press an cACK>
key with insufficient access, an error message will be displayed. The points will scroll with cACK> key pressing to
allow you to view the points on the list, but the points will not be acknowledged. (See Log In Procedure for details.)
POWER UP SEQUENCE
Whenever power is applied to the NDU panel, or when the NDU Master Controller microprocessor has been reset,
the NDU self-tests its memory integrity and verifies card configurations. Next, the NDU displays the system startup
in progress messages, followed by a trouble condition. Battery trouble conditions normally clear automatically.
The green POWER ON LED illuminates immediately after AC power is applied to the NDU. Make sure that the green
LED is illuminated before connecting the battery power harness.
IMPORTANT
To power up the NDU, apply 120 VAC to the unit. Wait until the GREEN POWER ON LED has
illuminated; then, connect the battery power harness.
To power down the NDU, disconnect battery power harness; then, turn the 120 VAC power OFF.
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