Learjet 60 - Audio Control Panel; Audio Control System

Pilot's Manual

Learjet 60
AUDIO CONTROL SYSTEM
The audio control system is used to select the desired audio inputs for
broadcast
through the speakers or headphones . The audio control sys-
tem is also used to
select the desired transmitter to which microphone
inputs
will be directed . A separate audio control system is
provided
for
pilot and copilot . Each system consists of an
audio amplifier and
audio control panel The audio control
system operates on 28 VDC
supplied through the 5-amp L and R Audio circuit
breakers on the pi-
lot's
and copilot's circuit breaker panels
respectively . The audio con-
trol systems will operate during
EMER BUS mode .
AUDIO CONTROL
PANEL
An audio control panel is installed at the
outboard end of the pilot's
and copilot's instrument panels .
Each panel provides the controls nec-
essary to direct audio
signals and adjust volume levels . Each panel is
used in conjunction
with the on-side microphone, headphone and
cockpit speaker .
5-44
MASTER VOLUME-
VHF1 VHF2 HF1 HF2
BOTH-1

NORM MIC
NAV1 NAV2 ADF1 ADF2

V

I
BOXY
O
MIC
~( ~)
E
IDENT, J
DME1

DME2

MKR1

MKR2
HI -1
AUDIO CONTROL PANEL
Figure 5-11
PM-123
Original