D I S C R I M I N A T O R F R E Q U E N C - Aeroflex ATC-1400A-2 Maintenance Manual

( 1 1 ) D i s c r i m i n a t o r F r e q u e n c y
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 :
TO DISCRIMINATOR ASSEMBLY (J5201, PIN 8)
SCOPE
CH A
N O T E : I f 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 , 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 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 D u a l P u l s e G e n e r a t o r
1 L B a n d A m p l i f i e r
1 5 0 Ω B N C T e e C o n n e c t o r
1 5 0 Ω L o a d
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 )
1 5 0 Ω C o a x i a l C a b l e ( S M B t o B N C )
VEL
KTS
RANGE
NMi
FREQ
MHz
40
30
20
10
0
CH B T
TACAN
ON
POWER
DUAL PULSE
GEN
TRIG
P / P P o s i t i o n i n g 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
1 2
TO VIDEO ASSEMBLY (TP3501)
DISPLAY SELECT
PRF SQTR Hz DME-PRF Hz
DME DIST
XPDR-% REPLY
NMi
XPDR
CODE
DBL INTERR / INTRF PULSE FREQ / FUNCTION SELECT F
DME REPLY
EFFICIENCY
50
60
0 0 0 0 0 0 0 0 0 0 0
OFF XPDR
70
80
90
100
PRF/SQTR XPDR P /P DEV DME P DEV XPDR PULSE WIDTH
2 3 2
XPDR MODE
B
A C
0 0 0 0 0 0 0 0 0 0 0 0
T D
2 AC CODE
1
1 AC
2 FEET
P P P
IDENT
2 3 2
OFF TONE CODE ON OFF - + - + - + VAR CAL
CAL CAL CAL
OFF AUTO
MAN
F / P F / P T T 1.0 S 1.45 S MAN
2 2 1 1 O D STEP
I
INTRF
TAC CAL O / FREQ
DISCRIMINATOR PULSE WIDTH CAL MARKS VAR
SYNC
STEP
RATE
OFF
OUT
F i g u r e 3 9
UNIT UNDER TEST
XMTR FREQ XMTR PWR
MHz WATTS
RANGE/VEL/ACCEL
RF LEVEL
-dBm
0 0 0 0 0
OFF
XXX0.0 XXX.00
XXX.XX
SLS/ECHO
L
O
A
D
0
+
RNG VEL ACCEL
C
L
E
A
CW
R
NMi KTS FT/S/S
NORM
ON OFF IN -1 NMi
OFF
SUPPRESSOR RF I/O
ON OFF OUT NORM
GEN XMTR
7506013
2 - 2 - 2
P a g e 3 9
F e b 2 / 0 9