BOMBARDIER Challenger 601-3A CL-600-2B16 Pilot Training Manual page 201

the corresponding SDC power supply by il-
luminating all analog and digital displays in-
cluding the fuel panel.
Indications
The amber light above the instrument test
switch (Figure 7-12) will illuminate when a
power input source to the SDC fails. In this
case, the blue power-on segments of the af-
fected scales will extinguish, and the associ-
ated analog and opposite digital display will
be lost.
N (Fan) RPM
1
N (fan) rpm (Figure 7-11) is sensed by a
1
monopole transmitter located on the engine
front frame. Electrical signals are sent via the
SDC to the appropriate analog and digital
scale. Each scale is calibrated to indicate a per-
centage of N rpm from 0% to 100%.
1
ITT (Interturbine Temperature)
Thermocouples of different lengths are equally
spaced between the LP turbine and the HP
turbine. The thermocouples are parallel-con-
nected. The ITT output is sent to the appro-
Figure 7-12. Engine Instrument
7-16 CL 601-3A
AUX PWR
1 2
TEST
D
I
M
Control Panel
FOR TRAINING PURPOSES ONLY
FlightSafety Canada
CL-600-2B16 PILOT TRAINING MANUAL
BLEED ADPTR
AIR OIL
LO
FAILED
PRESS
HI
OPEN
TEMP
PUSH
A
P
%RPM
U
100
80
60
20
40
Figure 7-13. APU Control Panel
priate vertical and digital scales of the ITT in-
dicator via the SDC. The ITT indicator scales
are calibrated in degrees Celsius from 0 to
1000°C.
A red light (Figure 7-11) above each vertical
scale will illuminate if the ITT reaches 871°C.
These lights also illuminate during the in-
strument test.
A two-position switch labeled "DGT OFF"
(Figure 7-11), located at the bottom of the ITT
panel, allows the crew to extinguish all engine
parameter digital displays which might be an-
noying on extended nighttime operations.
N RPM
2
N rpm (Figure 7-11) is supplied by an alter-
2
nator driven by the accessory gear. The rpm
signals are isolated from the alternator's power
to eliminate interference and interruption. The
rpm signals are sent to the appropriate N
scales via the SDC.
Fuel Flow
Fuel flow (Figure 7-11) is sensed by a mass
flow transmitter located downstream of the
FCU. The transmitter output is sent to the
SDC for processing into analog and digital
readout for display on the appropriate fuel
flow indicators.
PWR FUEL APU START/
ON/OFF OIL STOP
SOV LO
STARTER
CLOSED PRESS
PUMP HI APU
C
INOP TEMP READY
O
PUSH PUSH
N
T
EGT
10
R
°C X 100
O
8
0 0 L
6
2
4
Lt é e
Lt d .
2