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Table 5-4. Self Test.
Up
TM-9-1270-219-13-P Fire and Flight Air Data Subsystem Helicopter Armament: XM 143 PN 03-004-02 Manual
Next
Table 5-7. Indicated Airspeed Calibration Check.
TM 9-1270-219-13&P
Table 5-5. True Airspeed Check.
Action
Resultant Display
EPU
DVM Reading of
Test Set
EPU
Buttons
True Airspeed Voltage
ADS (LRU)
Self
S10
ADS
ADS
Test
Self
NO GO
FLR
Lamp
Reset
VW
V
Test
V
U
V
--
Press
On
On
On
--
--
Release
On
Off
Off
Press &
3.33
10.00
10.00
On
On
On
0.05
Release
0.05
0.05
release the RESET switch ( fig. 1-14) on the
Set
test
set
switch
S3
LAI
FLR
to
up.
After
(5)
EPU.
Check
that
the
AADS
and
LAI
BITE
at least two seconds set S3 to down. Check
indicators on the EPU show black. Check that
that the LAI BITE indicator on the EPU ( fig.
the ADS NO GO and ADS FLR lamps on the test
1-14) changes from black to white and stays
set are extinguished.
white.
Set test set Angle Resolver Dial B1 to 0. Set test
(6)
d. Air Temperature Check (See Figure 1-32).
set Angle Resolver Dial B2 to 60 degrees. Check
t h a t the AADS BITE indicator ( fig. 1-14) on the
(1)
Connect the EPU for test as shown in figure 5-8.
EPU is black and the ADS NO GO and ADS FLR
lamps on the test set are extinguished.
S e t t e s t s e t s w i t c h S 8 D A T A W D S E L t o T  A I R.
(2)
Set test set Angle Resolver Dial B2 to 70 degrees.
(7)
Set test set switch S6 AlR TEMP C to the
(3)
C h e c k that the AADS BITE indicator ( fig. 1-14)
p o s i t i o n shown in Table 5-6. Set S1 to CONT.
o n the EPU is white and the ADS NO GO and
Set test set switches CB1 and CB2 OFF and
A D S FLR lamps on the test set are illuminated.
t h e n to ON after selection of each of the three
positions.
Check
that
the
DATA
WORD
display
Set test set switch CB2 to OFF. Set test set
(8)
o n the test set is as detailed in Table 5-6 for
Angle Resolver Dial B2 to 0. Set test set switch
t h e corresponding position of S6.
CB2 to ON. After at least 5 seconds press and
Table 5-6. Air Temperature Calibration Check.
Air
Data
Temperature
Word
Setting
Display
S6
1
I
I
Nominal
ToI
C
6
40
30
6
+15
140
6
+60
230

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