Aeroflex ATC-1400A-2 Maintenance Manual page 37

S T E P
6 . U s i n g O s c i l l o s c o p e , v e r i f y 0 . 6 V p - p ( t y p i c a l ) a t 5 0 0 W . F
7 . A d j u s t O s c i l l o s c o p e s w e e p a n d p o s i t i o n i n g c o n t r o l s u n t i l d i s p l a y e d 5 0 % v i d e o
p u l s e i s 1 0 g r a t i c u l e s l o n g .
8 . 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 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 .
9 . 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 i s m i n i m u m 9 . 5 g r a t i c u l e s l o n g .
N O T E : I f a m p l i f i e r i s c o m p r e s s i n g , t e s t i s i n a c c u r a t e . A m p l i f i e r m u s t b e l i n e a r .
1 0 . E n s u r e S w i t c h e s 1 a n d 2 o f S W 7 0 1 ( R e a r P a n e l ) a r e s e t t o O N .
1 1 . R o t a t e R F L E V E L C o n t r o l c c w u n t i l X M T R P W R W A T T S D i s p l a y i n d i c a t e s 2 W .
1 2 . V e r i f y 5 0 % v i d e o p u l s e d i s p l a y e d o n O s c i l l o s c o p e d o e s n o t o s c i l l a t e o r
d i s a p p e a r . D e c r e a s e l e v e l a n d v e r i f y s l i c e r q u i t s b e t w e e n 1 a n d 2 W r e a d i n g .
1 3 . R e c o n n e c t 5 0 Ω T e r m i n a t i o n t o E X T E R N A L R F C o n n e c t o r ( J 2 2 ) .
1 4 . 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 8 .
PULSED RF
POWER
SOURCE
T r a n s m i t t e r P o w 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
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
P R O C E D U R E
SH1 AH1 T6 TE0
L4 LE0 SR1 RL1
A5 A1
PP0 DC1 DT1 C0
ON 1 1 1 1 1
OFF 0 0 0 0 0
1 2 3 4 5 6 7 8
O
N
O
F
F
IEEE 488 - 1978
GPIB ADDRESS
SW701
DISPLAY SELECT
PRF SQTR Hz DME-PRF Hz
VEL DME DIST
XPDR-% REPLY
KTS NMi
RANGE XPDR
NMi CODE
FREQ
MHz
DBL INTERR / INTRF PULSE FREQ / FUNCTION SELECT F
DME REPLY
EFFICIENCY
50
40 60
0 0 0 0 0 0 0 0 0 0 0
OFF XPDR
30 70
20 80
10 90
0 100
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
1 CODE
1 AC FEET
2
P P P
TACAN IDENT 2 3 2
ON OFF TONE CODE ON OFF - + - + - + VAR CAL
CAL CAL CAL AUTO
POWER OFF
MAN
/ F / P T 1.45 S MAN
F P O T D 1.0 S
2 2 1 1 STEP
I
INTRF
TAC CAL O / FREQ
DISCRIMINATOR PULSE WIDTH CAL MARKS
SYNC
STEP
RATE
OFF
COUPLER
F i g u r e 3 8
UNIT UNDER TEST
XMTR FREQ MHz XMTR PWR WATTS
RANGE/VEL/ACCEL
RF LEVEL
-dBm
0 0 0 0 0
OFF
XXX.XX XXX0.0 XXX.00
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
VAR GEN XMTR
0103
PEAK
PWR METER
7506012
2 - 2 - 2
P a g e 3 7
F e b 2 / 0 9