Aeroflex ATC-1400A-2 Maintenance Manual page 36

( 1 0 ) 5 0 % V i d e o S l i c e r a n d T r a n s m i t t e r P o w e r
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
DME DIST
VEL
KTS NMi
RANGE XPDR
NMi CODE
FREQ
MHz
DBL INTERR / INTRF PULSE
DME REPLY
EFFICIENCY
50
40 60
0 0 0 0
30 70
20 80
10 90
0 100
PRF/SQTR
XPDR MODE
B
A C
0 0 0 0
T D
2 AC CODE
1
1 AC
2 FEET
TACAN IDENT
ON OFF TONE CODE ON OFF
POWER OFF
F P / F / P T
2 2 1 1 O
I
INTRF
DISCRIMINATOR PULSE WIDTH
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 . C o n n e c t t e s t e q u i p m e n t t o A T C - 1 4 0 0 A - 2 a s s h o w n i n 2 - 2 - 2 , F i g u r e 3 7 .
2 . S e t P O W E R S w i t c h t o O N a n d a l l o w 1 0 m i n u t e w a r m - u p p e r i o d .
3 . 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
D M E D E V P
T / T A C / T
O
P R F / S Q T R O N / O F F S w i t c h
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 E L F - I N T E R R / O F F S w i t c h
4 . R o t a t e R F L E V E L C o n t r o l u n t i l 5 0 0 W i s d i s p l a y e d o n X M T R P W R W a t t s D i s p l a y .
5 . U s i n g O s c i l l o s c o p e , v e r i f y 5 0 % v i d e o p u l s e a l i g n s w i t h G a u s s i a n s h a p e d p u l s e
a t 5 0 % p o i n t .
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 .
2 - 2 - 2 D ( 1 ) P o w e r S u p p l y
1 P e a k P o w e r M e t e r
1 P u l s e d R F P o w e r S o u r c e
1 D i r e c t i o n a l C o u p l e r
1 O s c i l l o s c o p e
1 L B a n d A m p l i f i e r
1 5 0 Ω C o a x i a l C a b l e ( B N C t o T y p e N )
4 5 0 Ω C o a x i a l C a b l e s ( B N C t o B N C )
TO XMTR CONNECTOR (J11)
TO REAR PANEL (J22)
UNIT UNDER TEST
DME-PRF Hz
XMTR FREQ MHz XMTR PWR
XPDR-% REPLY
FREQ / FUNCTION SELECT F RANGE/VEL/ACCEL
0 0 0 0 0 0 0 0 0 0 0 0
OFF XPDR OFF
XXX0.0 XXX.00
XXX.XX
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
P P P
2 3 2 R
NMi KTS FT/S/S
- + - + - + VAR CAL ON OFF IN -1 NMi
CAL CAL CAL AUTO
SUPPRESSOR
MAN
T 1.0 S 1.45 S MAN ON OFF OUT NORM
D STEP
TAC CAL O / FREQ
CAL MARKS VAR GEN XMTR
SYNC
STEP
RATE
OFF
5 0 % V i d e o S l i c e r C a l i b r a t i o n T e s t S e t u p D i a g r a m
P R O C E D U R E
/ C A L S w i t c h
2
S w i t c h
D
MAI NT ENANCE MA NUAL
ATC-1400A-2
L-BAND
WATTS
AMP
RF LEVEL
-dBm
CW
NORM
OFF
RF I/O
F i g u r e 3 7
S E T T I N G
1 0 9 0 M H z Y
SCOPE
CH A CH B T
7506011
C A L
T
D
O F F
1 5 0
O N
2 - 2 - 2
P a g e 3 6
F e b 2 / 0 9