AIRPLANE
OPERATIONS
MANUAL
NAVIGATION AND
COMMUNICATION
JUNE 29, 2001
2-18-28
Page
5
Code
01
SATCOM CONTROLS AND INDICATORS
The TT-3000 Series Aero-M SATCOM System uses the TT-5621A
Handset as the main user interface. The handset contains a keypad
with 21 separate function keys, a 2X12 character Liquid Crystal Display
(LCD), four indicator LEDs, and a volume control.
The handset allows the user to:
− Navigate the user menu;
− Place and receive calls;
− Save and recall phonebook entries;
− Configure system parameters;
− View phone log;
− Monitor system operations;
− View system errors as they occur.
HANDSET KEYS FUNCTIONS
The handset keypad consists of 21 keys (12 numeric and nine function
keys). These keys are designed to perform multiple functions, that are
dependent on the selected mode.
The handset has three modes that determine the function of the keys:
− Normal mode: keys perform their primary functions;
− Alpha mode: keys perform alphanumeric functions;
− 2nd mode: keys perform their alternate functions.
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