BOMBARDIER Challenger 601-3A CL-600-2B16 Pilot Training Manual page 492

Forced Standby Mode
The weather radar system is automatically
forced from the selected operating mode into
the standby mode when the aircraft lands, to
prevent RF radiation on the ground. A ground
signal from the landing gear system (WOW)
is supplied to the weather radar controller.
The ground signal automatically switches the
radar to the STBY mode. The ground signal
is removed when the aircraft is in the air. The
weather radar system can be operated on the
ground by simultaneously pressing both range
pushbuttons on the weather radar controller to
remove the forced standby condition. The
range pushbuttons must be pressed each time
the weather radar operating mode is changed
to override the forced standby condition. Never
radiate in proximity to ground personnel or
other aircraft being refueled.
RADIO ALTIMETER SYSTEM
The radio altimeter system (Figure 16-69)
consists of a high-resolution, short-pulse radio
altitude system that provides precise infor-
mation on ground proximity during the ap-
p r o a c h a n d l a n d i n g p h a s e s o f a i r c r a f t
LOC
KIAS
300
DH
280
260
20
M
.472 270
DH RISING
REACHED RUNWAY
16-80 CL 601-3A/R
GS AP
ASEL
100
00
20 20
10 10
10 10
100
20
DH200
DH
SET
Figure 16-69. Radio Altimeter Display
FOR TRAINING PURPOSES ONLY
FlightSafety Canada
CL-600-2B16 PILOT TRAINING MANUAL
operation. Radio altitude is displayed on the
pilot's and copilot's EADIs.
The radio altimeter system consists of a trans-
mitter/receiver, transmitter antenna, and re-
ceiver antenna. The DH SET control located
on the display controller sets the decision
height. An expanding rising runway comes
into view at 200 feet AGL, independent of
DH setting. The green four-digit radio altitude
display is from 0 to 2,500 feet AGL.
DH on both EADIs can be set only
from one side of the cockpit at a time.
The DH set is only operational on
the coupled EFIS display controller.
AVIONICS COOLING
The avionics compartment is located under
the cabin floor on both sides of the fuselage
between the cockpit rear bulkhead and the
wing center section front spar. A flow of ex-
haust air from the cockpit toward the outflow
valves in the rear pressure bulkhead provides
cooling for the avionics equipment.
FULL
MAP
ARC
FMS 1
ADF 1
OFF
VOR 1
OFF
BRG
EFIS DISPLAY
CONTROLLER
RADIO
ALTITUDE
NOTE
GSPD
WX ET V/L
TTG
FMS 2
ADF 2
TEST
OFF
VOR 2
OFF
ADI DH HSI WX
DIM TST DIM DIM
DH SET AND RADIO
ALTITUDE/EFIS TEST
L t é e
L t d .
FMS
BRG