MAI NTENANCE MANUAL
ATC-1400A-2
2-2-2
Page 3 6
Subj e c t to E x p o rt Con t r o l, s e e C o ver P a g e fo r d e tail s . F e b 2/ 0 9
(10) 50 % V ideo S l i cer a n d Tran s mi t t e r Po we r
PREREQUISITES : 2-2- 2 D ( 1 ) P ower S u p p l y
TEST EQ U I P M E N T : 1 P e a k Power Me t e r
1 Puls e d R F Power S o u rce
1 Dire c t i o nal C o u p ler
1 Osci l l o sc o p e
1 L Ba n d A mplifie r
1 50 Ω Coa x i a l Cab l e ( BNC to T y pe N)
4 50 Ω Coa x i a l Cabl e s (BNC to B N C )
SET-UP DIAGRAM:
T
CH BCH A
SCOPE
I
POWER
WATTS
MHz
UNIT UNDER TEST
XMTR PWR
XMTR FREQ
REPLY
Hz
XPDR-%
DME-PRF
DISPLAY SELECT
XPDR MODE
RANGE/VEL/ACCEL
XMTRGEN
NORMOUT
-1 NMiIN
R
A
E
L
C
D
A
O
L
FT/S/S
KTS
NMi
ACCELVEL
XXX.00XXX0.0
RNG
XXX.XX
RF I/O
OFF
NORM
CW
-dBm
RF LEVEL
F
FREQ / FUNCTION SELECT
VAR
SUPPRESSOR
OFFON
OFFON
SLS/ECHO
XPDR PULSE WIDTH
CALVAR
RATE
STEP
FREQ
OFF
STEP
MAN
MAN
AUTO
/
CAL O
CAL MARKS
1.45S
1.0S
SYNC
TAC
D
O
T
T
2
DME P DEV
-+
-
+
+
-
V
V
V V V
V
V
232
CALCALCAL
PPP
OFFON
32
XPDR P /P DEVPRF/SQTR
DBL INTERR / INTRF PULSE
PULSE WIDTH
INTRF
DISCRIMINATOR
1 1
F
/
PP
/
F
22
OFF
TONE CODE
IDENT
OFFON
TACAN
A
T
2
1
FEET
CODE
2
1
AC
AC
D
C
B
90
80
70
60
100
40
30
20
10
0
50
EFFICIENCY
DME REPLY
PRF SQTR Hz
FREQ
RANGE
VEL
XPDR
DME DIST
XPDR
000 0
OFF
00 000 0 0
OFF
0000 0
0
0
0
+
0 0 0
0 0 0
0 0 0 0
7506011
TO XMTR CONNECTOR (J11)
TO REAR PANEL (J22)
AMP
L-BAND
MHz
NMi
KTS
CODE
NMi
50% V i d e o Sl i c e r Cal i b r atio n T e st S e t u p Dia g r a m
Figu r e 37
NOTE: Dur i n g per f o r mance o f t his p r o cedu r e , if a c ert a i n co n d i tio n o r sp e c i fic a t i on
cann o t b e ve r i f ied, r e f er t o a ppro p r i a te a s sembly t e s t p r o c e dur e i n 2-2 - 4 for
test i n g an d r e pai r o f fa u l t y as s e m b l y.
STEP PROCEDURE
1. Conne c t t est e q u ipment t o ATC-14 0 0 A -2 a s s h own i n 2 - 2-2 , F i gure 3 7 .
2. S e t POWER S w i t c h to ON a n d all o w 1 0 minut e w a r m-up pe r i o d.
3. Set A T C - 1 4 00A- 2 c o ntro l s a s f o l l o ws:
CONTROL SETTING
DME DEV P
2
/CAL Swi t c h CAL
TO /TAC/TD Sw i t c h TD
PRF/SQTR ON/OFF S w i t c h OFF
PRF/SQTR T h u m b w h e els 150
FREQ/FUNCT I ON S E L E C T Thumbwhee l s 109 0 M H z Y
SELF-IN T E R R / O F F Switch ON
4. R otat e R F LEVE L C o n trol u n t il 50 0 W is d i s p lay e d o n X MTR P W R W att s D i s pla y .
5. Usin g O s c ill o s c op e , v eri f y 50% v i deo p u lse a l ign s w i th Gau s s ian s h ape d p u ls e
at 5 0 % p oint .
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