HONEYWELL
Aerospace Electronic Systems
Page 42
Use or disclosure of information on this page is subject to the restrictions on the title page of this document.
4.2.4 Print Definition
The user can define the print format for a message by specifying the field names and associated
parameters. Figure 26 shows the print format for a Flight Initialization uplink. This allows the user to define
formats for uplink messages, as well as Mark III CMU generated reports to be easily readable by the flight
crew. It also allows the flexibility to modify such formats as user requirements change.
Figure 26 Print Format
4.2.5 Logic Units
In addition to the various display types and the conditional display options, the GBST provides an extremely
powerful capability called logic units. Logic units allow a user to generate algorithms that can trigger events
based upon certain conditions. This provides significant flexibility to a user as user requirements for datalink
change, and more complex functions are required. The use of logic units provides a wide range of
capabilities. For instance, a display object could be hidden on a screen and made visible only when a
specific parameter exceeds a certain value. Logic units can be used to provide a mini-ACMS capability
where a downlink message is generated and sent (without flight crew involvement) when a specific condition
has been met (such as an engine exceedance). Further, the specified condition can be turned on and off or
even changed based upon the value included in an uplink message.
