D.4 Data Flow for Ribbon Display
Generation
The primary function of the TDWR processing is to output ribbon display messages to
controllers (accompanied by audio warning tone).
The standard IRIS output and display features are also used to construct images for the
Situation Displays (SD's), that is, simplified displays showing runway warning areas (arenas),
alert centroids and shear lines with forecast positions. Since the SD's are normal IRIS
displays, other IRIS products can also be displayed.
Ribbon displays are generated when the local IRIS (the IRIS where the ribbon display is
connected) receives a special TDWR product.
Data Flow to Generate Ribbon Display
IRIS/Analysis on RPG
Product Configuration Files
SLINE
Config
SHEAR
Config
WARN
Config
Product
Process
Ingest Files
of Base Data
Product Files
TDWR
SLINE
WARN on
SHEAR
Receiver
Output
TDWR
Runway
Utility
TDWR/LLWAS
Integrator
TCPIP
LLWAS
Data
(optional)
Products
TCPIP
TDWR
Network
Output
RS232C
9600 Baud
Note: SLINE and
WARN (on SHEAR)
are also sent to SD
along with other IRIS
Products
Dale or Vribbon
Ribbon Display
IRIS Workstation
Situation Display
Figure 118 Data Flow for Generating TDWR Ribbon Display Products
Normal IRIS product generation makes SLINE and WARN products for radial shear
(microburst warnings). These products have all possible protected areas turned on, even for
inactive runways.
Appendix D – IRIS TDWR Features
RESTRICTED 337
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