S L S L E V E; P D R / D M E P U L S E S P A C I N G A N D S H A P I N - Aeroflex ATC-1400A-2 Maintenance Manual

( 6 ) S L S L e v e l
P R E R E Q U I S I T E S :
T E S T E Q U I P M E N T :
S E T - U P D I A G R A M :
DISPLAY SELECT
PRF SQTR Hz
VEL DME DIST
KTS NMi
RANGE XPDR
NMi CODE
FREQ
MHz
DBL INTERR / INTRF PULSE
DME REPLY
EFFICIENCY
50
40 60
0 0 0 0
OFF
30 70
20 80
10 90
0 100
PRF/SQTR
XPDR MODE
B
A C
T D 0 0 0 0
2 AC
1 CODE
1 AC
2 FEET
TACAN IDENT
ON OFF TONE CODE ON OFF -
OFF
POWER
F / P F / P T
2 2 1 1 O
I
INTRF
DISCRIMINATOR TAC
PULSE WIDTH
SYNC
N O T E : D u r i n g p e r f o r m a n c e o f t h i s p r o c e d u r e , i f a c e r t a i n c o n d i t i o n o r s p e c i f i c a t i o n
c a n n o t b e v e r i f i e d , r e f e r t o a p p r o p r i a t e a s s e m b l y t e s t p r o c e d u r e i n 2 - 2 - 4 f o r
t e s t i n g a n d r e p a i r o f f a u l t y a s s e m b l y .
S T E P
1 . S e t A T C - 1 4 0 0 A - 2 c o n t r o l s a s f o l l o w s :
C O N T R O L
C W / N O R M / O F F S w i t c h
S L S / E C H O O N / O F F S w i t c h
X P D R P U L S E W I D T H V A R / C A L S w i t c h
F R E Q S T E P R A T E C o n t r o l
M A N / A U T O / M A N S T E P S w i t c h
X P D R D E V P
X P D R D E V P
T / T A C / T
O D
P R F / S Q T R O N / O F F S w i t c h
P O W E R S w i t c h
T A C A N O N / O F F S w i t c h
X P D R M O D E C o n t r o l
P R F / S Q T R T h u m b w h e e l s
F R E Q / F U N C T I O N S E L E C T T h u m b w h e e l s
S L S / E C H O T h u m b w h e e l s
R F L E V E L C o n t r o l
S u b j e c t t o E x p o r t C o n t r o l , s e e C o v e r P a g e f o r d e t a i l s .
MAI NT ENANCE MA NUAL
ATC-1400A-2
2 - 2 - 2 D ( 1 ) P o w e r S u p p l y
2 - 2 - 2 D ( 4 ) R F C h e c k a n d L e v e l
1 O s c i l l o s c o p e
1 S i g n a l G e n e r a t o r
1 H e t e r o d y n e M o n i t o r
3 5 0 Ω C o a x i a l C a b l e s ( B N C t o B N C )
1 P o w e r M e t e r w i t h 5 7 3 1 8 s e n s o r
UNIT UNDER TEST
DME-PRF
Hz
XMTR FREQ XMTR PWR
XPDR-% REPLY MHz WATTS
FREQ / FUNCTION SELECT F RANGE/VEL/ACCEL
RF LEVEL
-dBm
0 0 0 0 0 0 0 0 0 0 0 0
XPDR OFF
XXX.XX XXX0.0 XXX.00
XPDR P /P DEV DME P DEV XPDR PULSE WIDTH
SLS/ECHO L
2 3 2
O
A
D
0 0 0 0 0 0 0 0 0
+
RNG VEL ACCEL
C
L
E
A
CW
P P P
2 3 2 R
KTS
NMi FT/S/S
+ - + - + VAR CAL ON OFF IN -1 NMi
OFF
CAL CAL CAL
AUTO SUPPRESSOR RF I/O
MAN
T 1.0æS 1.45æS MAN ON OFF OUT NORM
D STEP
FREQ
CAL O /
CAL MARKS VAR GEN XMTR
STEP
RATE
OFF
X P D R / D M E P u l s e S p a c i n g a n d S h a p i n g
P R O C E D U R E
/ C A L S w i t c h
3
/ C A L S w i t c h
2
S w i t c h
SIGNAL
GEN
OUTPUT
HET
MONITOR
NORM
LO IN RF IN IF OUT
F i g u r e 3 0
S E T T I N G
N O R M A L
1 0 9 0 X P D R
SCOPE
CH A CH B T
7506008A
O F F
C A L
O F F
M A N
C A L
C A L
T
O
O N
O N
O F F
A
1 0 0 0
- 0
- 1 0
2 - 2 - 2
P a g e 1 8
F e b 2 / 0 9