AT-E-16 (DRAFT) - Air Force Link

2.3.3 Cathode Ray Tube Display (CRT)
The CRT provides the user with a temporary display of data provided to the FDIO
system. Under normal conditions, the CRT is fully independent and does not require
direct user control.
A power switch is located on the lower left front of the unit. When powered on, the
display will perform an internal self test and initialize itself for proper operation. Power
should remain applied to the CRT except for unusual circumstances.
After initial power on, the CRT should display a “blinking” cursor in the lower part of the
display area. A series of equal signs (“=”) is used to divide the screen into the message
composition area and the message display area (fig 2-4).
The composition area is the area below the line of equal signs. This area is again divided
into two sections, but no dividing indicator is displayed. The lower portion of this area
displays the inputs received from the RANK. The upper portion of the composition area
is used to display incoming flight data and general information messages, such as accept
or error responses received from the ARTCC.
The large, upper area or message area is used to display control data messages such as
flight strips, flight data amendments, and test device messages.
The messages in this upper area are duplicates of the messages received and printed by
the RFSP.
The message area employs a scrolling feature to provide the user with a presentation of a
message as soon as it is received. The next message received is displayed without the
user having to take any action to view it. This process is explained in the following steps
and illustrations.
Example 1. The first message is received and displayed at the bottom of the message
area.
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