Aeroflex ATC-1400A-2 Maintenance Manual page 33

( 9 ) X a n d Y C h a n n e l R a n g e a n d R - N A V D e l a 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 :
FREQUENCY
COUNTER
OUTPUT
TO DME RANGE PC BOARD
CH A
X a n d Y C h a n n e l R a n g e a n d R - N A V D e l a 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
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
S L S / E C H O O N / O F F S w i t c h
D M E 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
I D E N T T O N E / O F F / C O D E S w i t c h
T A C A N O N / O F F S w i t c h
D M E R E P L Y E F F I C I E N C Y C o n t r o l
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
D M E P D E V T h u m b w h e e l s
2
S L S / E C H O 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
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
1 F r e q u e n c y C o u n t e r
1 D u a l P u l s e G e n e r a t o r
1 O s c i l l o s c o p e
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 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 )
1 5 0 Ω C o a x i a l C a b l e ( B N C t o E - Z H o o k )
1 L - B a n d A m p l i f i e r
ASSEMBLY (TP504)
SCOPE
CH B T
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
DUAL PULSE
GEN
TRIG
L-BAND
AMP
DISPLAY SELECT
PRF SQTR Hz
VEL DME DIST
KTS NMi
RANGE XPDR
NMi CODE
FREQ
MHz
DBL INTERR / INTRF PULSE
FREQ / FUNCTION SELECT
DME REPLY
EFFICIENCY
50
40 60
0 0 0 0 0 0 0 0
OFF
30 70
20 80
10 90
0 100
PRF/SQTR XPDR P /P DEV DME P DEV
2 3 2
XPDR MODE
B
A C
T D 0 0 0 0 0 0 0 0
2 AC
1 CODE
1 AC FEET
2
TACAN IDENT P P P
2 3 2
- - + -
ON OFF TONE CODE ON OFF +
OFF CAL CAL CAL
POWER
F / P F / P T T 1.0 S 1.45 S
O D
2 2 1 1
I
INTRF
TAC CAL O
DISCRIMINATOR PULSE WIDTH CAL MARKS
SYNC
F i g u r e 3 6
S E T T I N G
1 0 9 0 M H z Y
OUT
(TTL OUTPUT)
TO J6, PIN 5
TO J22
UNIT UNDER TEST
DME-PRF Hz
XMTR FREQ MHz XMTR PWR WATTS
XPDR-% REPLY
F RANGE/VEL/ACCEL
RF LEVEL
-dBm
0 0 0 0 0 0 0 0
XPDR OFF
XXX.XX XXX0.0 XXX.00
XPDR PULSE WIDTH
SLS/ECHO L
O
A
D
0 0 0 0 0
+
RNG VEL ACCEL
C
L
E
A
CW
R
NMi KTS FT/S/S
NORM
+
VAR CAL ON OFF IN -1 NMi
OFF
AUTO SUPPRESSOR RF I/O
MAN
MAN ON OFF
OUT NORM
STEP
FREQ
/
VAR GEN XMTR
STEP
RATE
OFF
7506010
O F F
∆
-
T
D
O F F
O F F
O F F
1 0 0 %
5 . 0
0 d B
O F F
2 - 2 - 2
P a g e 3 3
F e b 2 / 0 9