User's Manual

SECTION III OPERATION
SM 7063 07/97 3-10
If the CDU is configured to operate with the “Arming” security feature, the
ALARM
annunciator
will flash ON accompanied by 5 beeps from the sonalert, and the
ID Code Display
will show:
" ID = ##### "
alternating with
“ NOT ARMD”
if the CDU has not yet been Armed to the new ID Code (See Section 3.10 - “Arming” process).
If the
SET
key is pressed during the 5 second window, the CDU will switch to One-Way operation
and the
Function Menu Display
will indicate:
" Changing mode ... "
followed by
" Operation is now One-Way "
In addition, the
ID Code Display
will continuously show:
" ID = ##### "
alternating with
“ ONE-WAY”
as a constant reminder to the locomotive operator that the CDU is in One-Way mode, and as
such, its Emergency Switch is disabled.
When switching to One-Way mode, the
ALARM
annunciator will NOT flash ON since Arming
does apply in One-Way mode.
b) If the CDU is currently operating in
One-Way mode
, the user is prompted as follows:
" Saving ... "
followed by
“ Press SET to change to Two-Way “
followed by
" New ID: ##### "
The
“ Press SET to change to Two-Way “
message is displayed for 5 seconds.
If the
SET
key is NOT pressed during the 5 second window, the CDU will continue to operate in
One-Way mode and the sonalert will beep once to signal the successful completion of the save
of the new ID code into the CDU’s parameter storage EEPROM.
The
ID Code Display
will continue to show:
" ID = ##### "
alternating with
“ ONE-WAY”
as a constant reminder to the locomotive operator that the CDU is in One-Way mode, and as
such, its Emergency Switch is disabled.
If the
SET
key is pressed during the 5 second window, the CDU will switch to Two-Way operation
and the
Function Menu Display
will indicate:
" Changing mode ... "
followed by
" Operation is now Two-Way "
If the CDU is configured to operate with the “Arming” security feature, the
ALARM
annunciator
will flash ON accompanied by 5 beeps from the sonalert, and the
ID Code Display
will show:
" ID = ##### "
alternating with
“ NOT ARMD”
if the CDU has not yet been Armed to the new ID Code (See Section 3.10 - “Arming” process).