Aeroflex ATC-1400A-2 Maintenance Manual page 41

SCOPE
CH A CH B T
D i s c r i m i n a t o r F r e q u e n c y 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 T E P
1 5 . 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 .
1 6 . S e t 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 t o 1 0 9 0 M H z Y a n d a d j u s t R F
L E V E L C o n t r o l u n t i l a p p r o x i m a t e l y 5 0 0 W i s o n X M T R P W R W A T T S D i s p l a y .
1 7 . A d j u s t R 5 3 0 2 ( O f f s e t A d j u s t ) ( 2 - 2 - 2 , F i g u r e 2 6 ) u n t i l f r e q u e n c y o n X M T R F R E Q
M H z D i s p l a y i s e q u a l t o f r e q u e n c y o n D I S P L A Y S E L E C T R e a d o u t .
1 8 . S e t 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 t o 1 0 9 0 X P D R , P R F / S Q T R O N / O F F
S w i t c h t o O N a n d 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 ( ± 5 0 W ) i s o n X M T R
P W R W A T T S D i s p l a y .
1 9 . A d j u s t R 5 3 1 3 ( N a r r o w P u l s e O f f s e t A d j u s t ) ( 2 - 2 - 2 F i g u r e 2 6 ) u n t i l f r e q u e n c y o n
X M T R F R E Q M H z D i s p l a y i s e q u a l t o f r e q u e n c y o n D I S P L A Y S E L E C T R e a d o u t .
2 0 . S e t 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 t o 1 0 2 0 M H z Y a n d P R F / S Q T R
O N / O F F S w i t c h t o O F F . V e r i f y f r e q u e n c y o n X M T R F R E Q M H z D i s p l a y i s w i t h i n
± 2 0 k H z o f f r e q u e n c y o n D I S P L A Y S E L E C T R e a d o u t .
2 1 . S e t 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 t o 1 1 5 5 M H z Y . V e r i f y f r e q u e n c y
o n X M T R F R E Q M H z D i s p l a y i s w i t h i n ± 2 0 k H z o f f r e q u e n c y o n D I S P L A Y
S E L E C T R e a d o u t . R e c o r d f r e q u e n c y .
2 2 . S e t P R F / S Q T R T h u m b w h e e l s t o 2 H z , P R F / S Q T R O N / O F F S w i t c h t o O N a n d
S E L F - I N T E R R / O F F S w i t c h t o O F F . V e r i f y X M T R F R E Q M H z D i s p l a y i s w i t h i n
± 2 0 k H z o f f r e q u e n c y o n D I S P L A Y S E L E C T R e a d o u t .
2 3 . S e t 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 t o 1 0 2 0 M H z Y . V e r i f y X M T R
F R E Q M H z D i s p l a y i s w i t h i n ± 2 0 k H z o f f r e q u e n c y o n D I S P L A Y S E L E C T
R e a d o u t .
2 4 . S e t P R F / S Q T R T h u m b w h e e l s t o 1 0 2 .
2 5 . 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 4 0 W ( ± 5 W ) i s o n X M T R P W R W A T T S D i s p l a y .
V e r i f y X M T R F R E Q M H z D i s p l a y i s w i t h i n ± 2 0 k H z o f f r e q u e n c y i n S t e p 2 0 .
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
TO REAR PANEL (J22)
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
60
40
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
F i g u r e 4 0
P R O C E D U R E
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
RF I/O
SUPPRESSOR
ON OFF OUT NORM
VAR GEN XMTR
L-BAND
AMP
7506014
2 - 2 - 2
P a g e 4 1
F e b 2 / 0 9