Transmit (Tx) Annunciator; Nav Audio On/Off Switch; Squelch On/Off Switch; Radio Tuning Annunciators - Honeywell PRIMUS 1000 Pilot's Manual

PRIMUSr1000 Integrated Avionics System
Transmit (TX) Annunciator -- This annunciator indicates when the
D
copilot' s COM transmitter is transmitting.
NAV AUDIO On/Off Switch -- This alternate action button is used
D
to toggle NAV audio on or off to the audio panel in in the EMER
mode.
Squelch On/Off Switch -- This alternate action button is used to
D
toggle COM squelch on or off.
Norm/Emergency MODES Switch -- This rotary switch knob
D
selects the normal and emergency modes.
Transfer Key (
D
COM frequency (top) or the NAV frequency (bottom) to be
connected to the tuning knobs.
Radio Tuning Annunciators -- These four annunciations are lit
D
individually to identify source of the frequencies on the top and
bottom lines.
System Installation Annunciator (2) -- Annunciates the radio
D
system to which the tuning backup control head is connected. For
the Embraer 145, aircraft wiring selects the No. 2 radio system.
â
PRIMUS II Radio System
C--38
) -- The transfer key alternately selects either the
Y y B
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