Aeroflex ATC-1400A-2 User manual

MAINTENANCE MANUAL
ATC-1400A-2
2-2- 2
Page 1
Subj e c t to Exp o r t Contr o l , s ee Cov e r P age fo r d e tail s . Feb 2/ 0 9
2. Calibration/Verification
A. Gene r a l
CALIBRATION/ V E R I F I C A T I O N P R O C E D URE PAGE
Power Su p p l y - - - -------- - - - - - - -------- - - - - - - -------- - - - - - - - ------- - - - - - - - ------- - - - - - - - ------- - - - - - - - ---- 7
Coun t e r Time B a s e - -------- - - - - - - - -------- - - - - - - - -------- - - - - - - - -------- - - - - - - -------- - - - - - - - -------- - - 10
Cal Mark s - - - - - - - - -------- - - - - - - -------- - - - - - - - -------- - - - - - - - -------- - - - - - - - -------- - - - - - - - -------- - - - - - - 1 1
RF C h e c k an d L e v el ------ - - - - - - - ------- - - - - - - - ------- - - - - - - - ------- - - - - - - - -------- - - - - - - -------- - - - - - - - 12
TACAN AM -- - - - - - - - -------- - - - - - - - --------- - - - - - - - -------- - - - - - - - - -------- - - - - - - - --------- - - - - - - - -------- 16
SLS L e v el -- - - - - - - - -------- - - - - - - -------- - - - - - - - -------- - - - - - - - -------- - - - - - - - -------- - - - - - - - -------- - - - - - 1 8
XPDR/D ME P u l s e Spac i n g a n d Shap i n g - ------- - - - - - - ------- - - - - - - - ------- - - - - - - ------- - - - - - - ------ 22
XPDR/D ME W i n d ow Wid t h and P o s iti o n ing ------------ - - - - - - ------- - - - - - - - ------- - - - - - - ------- - - - - 2 8
X and Y Ch a n n el Ran g e a n d R-NA V D e l a y - ------- - - - - - - - ------- - - - - - - - ------- - - - - - - - -------- - - - - - - 3 3
50% V i d eo S l i c er a n d Tra n s m i t ter P o w er ------- - - - - - - -------- - - - - - - -------- - - - - - - -------- - - - - - - --- 36
Disc r i minato r F req u e ncy - - - - - - -------- - - - - - - - -------- - - - - - - -------- - - - - - - - -------- - - - - - - - -------- - - - - - 3 9
Paramet e r V e rif i c ati o n s - - - - -------- - - - - - - - -------- - - - - - - - -------- - - - - - - - -------- - - - - - - - -------- - - - - - - - 43
(1) Calib r a tion / V erif i c atio n S che d u l e
The Cal i b rat i o n /Ve r i f ica t i on Pr o c e dur e s s houl d b e p erf o r m e d a s a res u l t o f one o r
more o f t he f o l lowi n g c ond i t ion s :
●Fai l u r e to Meet S p e c ifi c a tio n s
If, d u r i ng th e c o u rse o f n o r mal ope r a tion , t h e ATC-1 4 0 0 A-2 or a n y m a j or fun c t i on
ther e o f f ail s t o m e e t t he pe r f o rmanc e s pec i f i ca t i o ns a c c o rdi n g t o App e n dix I ,
Calib r a tio n / V eri f i c ati o n P r oce d u r es sh o u l d be pe r f o rmed.
●Ass e m b l y Rep l a cemen t
If one o r mo r e A TC-14 0 0 A -2 as s e m b l ies a r e r epla c e d, Cali b r ati o n / Ver i f i cat i o n
Proc e d ure s s h o uld b e p e r for me d a c c ord i n g t o 2-2 - 2 , T abl e 4 7 .
●Annu a l Cali b r a tio n / V eri f i c ati o n
IFR rec o m me n d s an ann u a l Calib r a tio n / V eri f i c ati o n o n t he AT C - 1 4 0 0A- 2 t o
maint a i n pro p e r tes t i ng s t a n dar d s .
(2) Contr o l s, Conn e c tors a n d I ndi c a t ors
Refer t o A p pen d i x J , Fig u r e 1 t o loc a t e co n t rol s , c o nn e c t ors a n d i ndi c a t ors o n t h e
ATC-1 4 0 0 A-2 Fr o n t Pane l . Refer t o A p p end i x J , F igu r e 2 t o l oca t e c o ntr o l s ,
conn e c tor s a n d i ndi c a t ors o n t h e A TC-14 0 0 A -2 Rea r P a n el.
(3) Test R e c ord
A Calib r a t ion / V e rif i c a tio n D a t a S hee t i s p r ov i d e d for r e c ord i n g res u l t s obt a i ned wh i l e
perf o r m i n g t h e C a lib r a t ion / V e rif i c a tion P r oce d u r es.
N O T E : It is recommende d t h e t ech n i cia n r e p rod u c e c op i e s o f the Ca l i b rat i o n/
Ver i f i cat i o n D a ta Sh e e t r ath e r t han us e t h e cop y i n t h is manu a l .

MAINTENANCE MANUAL
ATC-1400A-2
2-2- 2
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Subj e c t to Exp o r t Contr o l , s ee Cov e r P age fo r d e tail s . Feb 2/ 0 9
B. Pr e c a uti o n s
(1) Safety
WARNING: REMOVE ALL J E W E L R Y O R O T H E R C O S M E T IC APPAREL BEFORE
PERFORMING ANY CALIBRATION/VERI F I C A T I O N P R O C E D U R E
INVOLVING LI V E C I R C U I T S.
WARNING: WHEN WORKI N G W I T H L I V E C I R C U I T S OF HIGH POTENT I A L , K E E P
ONE HAND IN POCKET OR BEHIND BACK TO AVOID SERIOUS SHOCK
HAZARD.
WARNING: USE ONLY INSULATED TROUBLESHOOTIN G TO O L S W H E N W O R K I N G
WITH LI V E C I R C UITS.
WARNING: FOR ADDED INSULATION, PLACE RUBBER BENCH MAT UNDERNEATH
ALL POWERED BENCH EQUI P M E N T , A S W E L L A S R U B B E R MAT
UNDERNEATH TECHNICIAN ' S C H A I R .
WARNING: HEED ALL WARNINGS A N D C A U T I O NS C O N CERNING MAXIMUM
VOLTAGES AND PO W E R I N P U T S .
(2) ES D
CAUTION: THE POWER SUP P L Y A S S Y , D I GITAL IF PCB ASS Y , F R O N T P A N EL
PULSE PCB ASSY, RF AS S Y A N D F R O N T P A N EL ASSY CONTAIN
PARTS SENSITIVE T O D A MAG E B Y E L E C T R O S T ATIC DISCHARGE
(ESD). A L L P ERSONNEL P E R F O R MING CALI B R A T I O N P R O C E D U R E S
SHOULD HAVE KNOWLE D G E O F A C C E P T E D E S D PRACTICES AND/ O R
BE ESD CE R T I F I E D .
(3) EMC an d Saf e t y C o mp lia n c e
All a s s e mbli e s , c ab l e s , con n e cto r s , pl a s ti c f a s ten e r s, ga s k ets , f i nge r s toc k a n d
mi sce l l a neo u s h ard w a r e w i thi n t h e T est S e t ar e c o nfi g u r ed t o s a t isf y t h e saf e t y and
EMC compl i a n ce s t a nda r d s.
CAUTION: UPON COMPLETION O F A N Y M A I N T E N A N C E A C T I O N ; ALL
ASSEMBLIES, CABLE S , C O N N E C T ORS, PLAST I C F A S TENERS,
GASKETS, FINGERSTOC K A N D MI S C E L L A N E O U S H A R DWARE MUS T
BE CONFIGURED A S I N S T A L LED AT THE F A C T O R Y .
CAUTION
THIS EQUIPMENT CONTAINS PARTS
SENSITIVE TO DAMAGE
BY ELECTROSTATIC DISCHARGE (ESD)

MAI NT EN ANCE MA N UAL
ATC-1400A-2
2-2- 2
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Subj e c t to Exp o r t Contr o l , s ee Cov e r P age fo r d e tail s . Feb 2/ 0 9
C. Requ i r e ments
(1) Test E q u ipmen t
App e n d ix G con t a i ns a li s t o f tes t e q uip me n t s uit a b le for p e r f ormin g a n y p roc e d ure in
this man u a l. A ny oth e r e qui p m e n t m e e tin g t h e sp e c i fic a t ion s o f e qui p m e n t lis t e d in
App e n d ix G ma y be su b s tit u t ed in p l a c e of t h e r e commen d e d m o d els .
NOTE: For c e r t ai n p r o ced u r es, e q u i pment l i s ted i n A p p end i x G ma y e x cee d t h e
mi nimum r e q u ire d s pec i f ica t i ons .
(2) Di sa s s embl y
Remove th e t o p c ove r f r o m th e ATC-1 4 0 0 A-2 a c cor d i ng to t h e d isa s s embly p r o ced u r e
in 2- 3 - 1 D(1) ( a ) . R e m o v e the Ca r d C a g e Ass e m b l y cove r a c cor d i n g to th e d i sas s e m b l y
proc e d u re i n 2 - 3-1 D ( 1 4 )(a) .
(3) Envi r o n me nt
For be s t r e sul t s , the ca l i b rat i o n/ve r i fi c a tio n e n vir o n me nta l c o ndi t i ons s h o u ld b e
ide n t i cal t o t h e env i r o nment a l c ondi t i o n s a t the n o r m a l o per a t ing l o c a tio n .
(4) Tools
Adj u s t me nts r e q uir e a n o n -co n d uct i v e a dju s t me nt to o l u p to fou r i n che s
(≈ten c e n timet e r s ) i n l e ngt h .

MAI NT EN ANCE MANUA L
ATC-1400A-2
2-2- 2
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Subj e c t to Exp o r t Contr o l , s ee Cov e r P age fo r d e tail s . Feb 2/ 0 9
87654321
O
N
O
F
F
1 2 3 4
21
12
2
14
3
TRANSPONDER CONTROL PC BOARD
TRANSPONDER PULSE PC BOARD
R327 WINDOW POSITION ADJUST
R451 SQUITTER DEAD TIME ADJUST
R417 24 S DECODER ADJUST
µ
R442 ECHO DELAY ADJUST
µDECODER ADJUSTSR412 12
R419 36 S DECODER ADJUST
µ
DME TIMING PC BOARD
TP408
C520 DELAY
DME RANGE PC BOARD
MICROPROCESSOR PC BOARD
7518017
R218
CAL MARK
PULSE WIDTH
CONTROLSW301 ADJUST
WIDTH
WINDOW
R330
ADJUST
DELAY
EQUALIZER
R613SW501 R605
TRANSPONDER DECODER PC BOARD
DME REPLY PC BOARD
TP501
TP403
Rear Pa n e l C a rd Cag e A s s embly V i e w
Figu r e 25

MAINTEN ANCE MANUAL
ATC -140 0A-2
2-2 - 2 Pag e 5 Sub j e c t t o Expo r t C o ntrol , s e e C over P a g e f o r deta i l s . Feb 2 / 0 9
RF Bulkhead Assembly
Front Panel Assembly Microprocessor PC Board Assembly XPDR Control PC Board Assembly DME Timing PC Board Assembly DME Reply PC Board Assembly XPDR Decoder PC Board Assembly XPDR Pulse PC Board Assembly Motherboard PC Board Assembly 200 MHz Generator Assembly ALC/Mixer Assembly Discriminator Assembly Counter Assembly Video Assembly RF Synthesizer Assembly DME Range PC Board Assembly
Power Supply Assembly
Rear Panel Assembly
Interface PC Board Assembly
the following Calibration Procedures must be performed.
If this assembly
is repaired or
replaced,
Power Supply
Counter Time Base
Cal Marks
RF Frequency Check and
Level
TACAN AM
SLS Level
XPDR/DME Window Width
and Positioning
X and Y Channel Range and
R-NAV Delay
XPDR/DME Pulse Spacing
and Shaping
50% Video Slicer and
Transmitter Power
Discriminator Frequency
Parameter Verifications
Asse m b ly R e place m e n t R e quire m e n ts Tab l e 47

MA I NTENANC E MANUAL
AT C -14 0 0A
2-2 - 2 Pag e 6 Sub j e c t t o Expo r t C o ntrol , s e e C over P a g e f o r deta i l s . Feb 2 / 0 9
7507021
R2603
R2623
R2671
P/J9503 J9112
J9202 J9203 J9201
J8502
J8503
J8104
J1001
R2619
J2002
J2001
J2003 R3224
J3201
J3101
J3102 J3103 J4401 J4001 J4005 J4004 J4006 J4007
J5102 J5202
TP5201
J5101 J5201
J7103 J7102
J6102
R7103 J7101 J7202 TP3501 J3501J6103
C6105 J6101 TP6101 J6104
J2004
J3204
J3202
J4102
J3203
R3229
A B
DETAIL
A
DETAIL
B
(WITH SLS MOD)
J2001
J2002 J2005
J2003
R2550
R2619 R2621
R5302
P/J9503R5313
J2601R2550J2005
R2621
S2601
S2601
J2012
J2601
R9257
R9256
J904
Loc a t i o n o f Cal i b r a tion Ad j u s t men t s a n d T est Poi n t s Fig u r e 26

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Subj e c t to Exp o r t Contr o l , s ee Cov e r P age fo r d e tail s . Feb 2/ 0 9
D. Calib r a tion / V eri f i c ati o n P roc e d ures
(1) Power S u p ply
PREREQUISITE S : None
TEST E Q U I PMENT: 1 Digit a l M u l timeter
SET-UP DI A G R A M: None
NOTE: Duri n g p e rfo r m a n c e of th i s p r oce d u r e, if a c e rta i n c o ndi t i on or s p e cif i c ati o n
cann o t b e v eri f i e d, re f e r t o app r o p ria t e a sse mb l y t est pr o c edu r e i n 2 -2- 4 f o r
tes t i n g and r e p air o f f a u lty a s s e mbly .
STEP PROCEDURE
1. Veri f y o n S W 301 (X P D R De c o d er PC Boar d A s sembl y ) , dip s w i t c h #1 i s s e t t o
UP and d i p s w i tch # 2 i s s et to DOWN ( 2 - 2-2, F i gure 2 5 ) .
2. Ver i f y o n SW5 0 1 ( D M E R a n g e PC Boar d A s sembly ) , d ip swit c h # 1, #2 an d # 3
are se t t o U P a nd di p s w i t ch # 4 i s s e t to DOWN ( 2 - 2 -2, F i g ure 2 5 ) .
3. Remove Mic r o p roce s s o r PC Boar d A sse mb l y ( 2-2- 2 , F igur e 2 5 ) par t wa y o u t
fro m Car d Ca g e A sse mb l y a n d con n e ct Dig i tal Mul t i me ter p o s iti v e l e ad to X 7 2 5,
pin 14 a n d n ega t i v e lea d t o g r oun d ( 2 - 2-2 , F i g ure 2 7 ) .
- +
7506020
VOLTMETER
DIGITAL
X725
Y701
R705
Mi cro p r o ces s o r PC Bo a r d As s e m b l y De t a i l
Figu r e 27
4. Rein s t a ll Micr o p r oce s s o r PC Boa r d A sse mb l y i n Card Ca g e A s semb l y .
5. Set A T C - 1 4 0 0A-2 P O W E R S witch t o ON . Ver i f y A TC-140 0 A - 2 fro n t p a nel
dis p l a ys a r e i n a cc o r d anc e w i t h powe r - up se l f t est i n 2 - 2 -4, T a b l e 55.
6. All o w a 1 0 mi n u te war m- u p p e rio d b e f ore p r o c eed i n g .

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STEP PROCEDURE
7. Ver i f y v olt a g e d isp l a y ed on Di g i tal Mult i m e t er is 4 . 9 V d c (±0 . 0 5 V ). I f not,
adj u s t R 9 932 a s f o llo w s :
WARNING: THE FRONT AND REAR PANE L A S S E M B L I E S C A R R Y 1 2 0 OR
240 VAC POTE N T I A L W HEN THE POWER CORD IS C ONNECT E D
TO THE ATC-1 4 0 0 A - 2 A N D EXTERNA L A C P O W E R S OU RCE. D O
NOT CONTACT THE S E O R A N Y A S S O C I A T E D C O M P O N E N T S
DURING CALIBRATION.
●Set ATC- 1 4 0 0 A-2 POWE R S w i t c h t o OFF.
●Disco n n ect a c p ower c o r d fr o m A C I NPUT Con n e ctor .
●Remove th e b o ttom cov e r f rom the AT C - 1 4 00A - 2 a c cor d i n g to th e
disa s s embly p r o ced u r e in 2 - 3 -1D( 1 ) ( a).
●Recon n e c t ac po w e r c o rd to A C INP U T C o n n ect o r .
●Set A T C - 1 4 0 0-2A P O W E R S witch t o ON .
●Adju s t R 9 932 (+ 5 V A d jus t me n t ) thr o u g h the s ma l l a d jus t m e n t h ole o n t h e
unde r s i de of t h e A T C-140 0 A - 2 (di r e c tly u n d e rne a t h t he Po w e r S upp l y
Asse mb l y ), as ne e d e d for 4 . 9 V d c (±0 . 0 5 V ).
8. Set ATC- 1 4 0 0 A-2 POWE R S w i t c h t o OFF.
9 Remove Mic r o p roc e s s or PC Bo a r d A sse mb l y (2- 2 - 2 , Fig u r e 2 5) par t w a y o u t of
Card Cag e A s sembl y . Disc o n n ect Di g i tal Mul t i me ter l e a d s.
10. Rei n s tall Mi c r o pro c e s sor P C B o a r d As s e mb ly in Ca r d C a g e Ass e m b l y.
11. Set POW E R S w i t ch to ON. Ve rify A T C - 1 400 A - 2 f ron t p a n el di s p l ays a r e i n
acco r d anc e w i t h p ower - u p s elf t e s t in 2-2 - 4 , Tab l e 5 5 .
12. Co n n e ct Dig i t al Mult i m e t e r pos i t ive l e a d to P/ J 7 1 01, p i n 1 a nd ne g a t ive l e a d to
P/J7 1 0 1 , pin 2 . Re fer to J 7 1 01 (2- 2 - 2, Fig u r e 2 6) on V i d e o Ass e m b l y .

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Subj e c t to Exp o r t Contr o l , s ee Cov e r P age fo r d e tail s . Feb 2/ 0 9
STEP PROCEDURE
13. Ve r i fy vo l t a ge di s p lay e d o n D i git a l M u l timet e r i s 5 V dc (± 0 . 2 5 Vdc ) . If vo l t a ge
exc e e d s 5.2 5 V , a dju s t R 9 9 32 as f o l lows :
WARNING: THE FRONT AND REAR PANE L A S S E M B L I E S C A R R Y 1 2 0 OR
240 VAC POTE N T I A L W HEN THE POWER CORD IS C ONNECT E D
TO THE ATC-1 4 0 0 A - 2 A N D EXTERNA L A C P O W E R S OU RCE. D O
NOT CONTACT THESE OR ANY ASSOCIATED COMPONENTS
DURING CALIBRATION.
●Set A T C - 1 4 0 0A-2 P O W E R S witch t o OF F.
●Disco n n ect a c p ower c o r d fr o m A C I NPUT Con n e ctor .
●Remove th e b o ttom cov e r f rom the AT C - 1 4 00A - 2 a c cor d i n g to th e
disa s s embly p r o ced u r e in 2 - 3 -1D( 1 ) ( a).
●Recon n e c t ac po w e r c o rd to A C INP U T C o n n ect o r .
●Set ATC- 1 4 0 0 A-2 POWE R S w i t c h t o ON.
●Adju s t R 9 932 (+ 5 V A d jus t me n t ) thr o u g h the s ma l l a d jus t m e n t h ole o n t h e
unde r s i de of t h e A T C-140 0 A - 2 (di r e c tly u n d e rne a t h t he Po w e r S upp l y
Ass e m b l y ), as n e e ded t o s e t v olt a g e ≤±5. 2 5 Vdc.
●Set A T C - 1 4 0 0A-2 P O W E R S witch t o OF F.
●Repea t S t eps 3 t h r o ugh 1 3 u n t il Micr o p roce s s or PC Bo a r d A sse mb l y v o lta g e
is 4. 9 V d c ( ±0.0 5 V ) a n d Vid e o A sse mb l y v o lta g e i s ≤5. 2 5 V dc.
14. Di s c o nn e c t D i git a l M u l time t e r p osi t i ve l e a d from P/J 7 1 01, pi n 1 . Conn e c t D i git a l
Mu lti me t e r p osi t i ve le a d t o P /J7 1 0 1, pi n 3 . Refer t o J 7 1 01 (2- 2 - 2 , Figu r e 2 6 ) on
Vide o A s sembl y . Veri f y + 12 Vdc ( ±0 . 2 V) is d i s p lay e d o n D i git a l M u l timet e r .
15. Di s c o nn e c t D i git a l M u l time t e r p osi t i ve l e a d from P/J 7 1 01, pi n 3 . Conn e c t D i git a l
Mu lti me t e r p osi t i ve le a d t o P /J7 1 0 1, pi n 5 . Refer t o J 7 1 01 (2- 2 - 2 , Figu r e 2 6 ) on
Vide o A s sembl y . Veri f y - 12 Vdc ( ±0 . 5 V ) is di s p laye d o n D i git a l M u l t imete r .
16. Di s c o nn e c t D i git a l M u l time t e r p osi t i ve l e a d from P/J 7 1 01, pi n 5 . Conn e c t D i git a l
Mu lti me t e r p osi t i ve le a d t o P /J7 1 0 1, pi n 6 . Refer t o J 7 1 01 (2- 2 - 2 , Figu r e 2 6 ) on
Vide o A s sembl y . Veri f y - 5 V dc (±0 . 2 V ) i s dis p l ayed o n D i g ita l Mu l t i meter .
17. Set POW E R S w i t ch to OF F .
18. Di s c o nne c t tes t e qui p m e n t .
19. Re i n sta l l a ll as s e mb li e s .

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(2) Co unt e r T ime Ba s e
PREREQUISIT E S : 2-2 - 2 D ( 1 ) Power S u p ply
TEST E Q U I P M E N T : 1 F r e quen c y C o unte r
1 50 ΩCoa x i a l Cabl e ( B NC to S MB )
SET-UP DIAGRAM:
OUTPUT
FREQUENCY
COUNTER
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
TT
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
00 0
+
0 0 0
0 0 0
0000
50 OHM COAXIAL CABLE
TO COUNTER ASSEMBLY
(TP6101)
7506004
MHz
NMi
KTS
CODE
NMi
Count e r T i me Base Ca l i b rat i o n T est S e t u p Diag r a m
Figu r e 28
NOTE: Duri n g p e rfo r m a n c e of th i s p r oce d u r e, if a c e rta i n c o ndi t i on or s p e cif i c ati o n
cann o t b e v eri f i e d, re f e r t o app r o p ria t e a sse mb l y t est pr o c edu r e i n 2 -2- 4 f o r
tes t i n g an d r epa i r of f a u lty a s s embl y .
STEP PROCEDURE
1. Conne c t t est eq u i pment to A T C - 1 400 A - 2 a s sho w n i n 2 - 2-2 , F i g ure 2 8 .
2. Set ATC- 1 4 0 0 A-2 POWE R S w i t c h t o ON. V e rify A T C - 1 4 00A - 2 f r o nt pa n e l
dis p l a ys a r e i n a cc o r d anc e w i t h powe r - up se l f t est in 2 - 2 -4, T a b l e 55.
3. All o w a 1 0 mi n u te warm-u p p e riod .
4. Ver i f y fre q u enc y d i s pl a y e d on Fr e q uen c y C o unt e r i s 5 M H z ( ±3 Hz). Ad j ust
C6105 ( C o u n ter As s e m b l y) (2 - 2 - 2, Fi g u re 26 ) a s n e ede d f o r p rope r f r eque n c y.
5. Set POWER Sw i t c h to OFF.
6. Disc o n nec t t est e q uip me n t .

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(3) CA L MA R K S
PREREQUISIT E S : 2-2 - 2 D ( 1 ) Power S u p ply
TEST E Q U I P M E N T : 1 F r e quen c y C o unte r
2 50 ΩCoa x i a l Cabl e s ( B NC to BNC)
SET-UP DI A G R A M: None
NOTE: Duri n g p e rfo r m a n c e of th i s p r oce d u r e, if a c e rta i n c o ndi t i on or s p e cif i c ati o n
cann o t b e v eri f i e d, re f e r t o app r o p ria t e a sse mb l y t e st pr o c e dur e i n 2 -2-4 f o r
tes t i n g and r e p air o f f a u lty a s s e mbly .
STEP PROCEDURE
1. Set AT C - 1 4 00A- 2 c o ntro l s a s f oll o w s :
CONTROL SETTING
CAL Ø Con t r o l CCW
1.0 µs / 1 . 45 µs Swit c h 1.45
µ s
PRF/S QT R ON/OFF S w i t c h OF F
PRF/S QT R T h u mbwhee l s 000 0
FREQ/FUN C T I O N S E L ECT Thumbw h e e l s 1000 X P D R
2. Conne c t F requ e n c y Coun t e r t o CAL MARKS Conn e c t or (J 1 9 ) .
3. Set POWER Sw i t c h to ON. A l low a 10 min u t e w a rm-up pe r i o d.
4. Ver i f y fre q u e nc y d i s pla y e d on Fr e q u en c y C o u nte r i s 6 896 5 5 H z ( ±34 Hz ) .
5. Set CAL MARKS Sw i t c h to 1.0
µ s.
6. Ver i f y fre q u enc y d i s pl a y e d on Fr e q uen c y C o unt e r i s 1 M H z ( ±5 0 Hz) .
7. Remove F r e q uenc y C o u nter f r o m C A L MARK S C o n n ect o r ( J 19) . Co n nec t
Os cil l o s cop e t o C A L M A R K S C o n nec t o r ( J19) . Set 1.0 µs/ 1 . 4 5 µs Swit c h t o
1.4 5
µ s.
8. Ver i f y pul s e w i dth d i s pla y e d on Osci l l osc o p e is 0. 4 5 µs a t 50% p o i nt. Ad jus t
R218 (X P D R P u l s e PC Boa r d A s sembly ) ( C A L M A R K P u l se Wid t h C o n trol )
(2-2 - 2 , F igu r e 2 5 ) as ne e d e d for pr o p er pul s e w i d th.
9. Conn e c t O s c ill o s cop e E x t ern a l T r igg e r t o S YNC Conn e c t or.
10. Se t P R F / SQTR Thumbwh e e l s to 20 0 0 , PRF/ S Q T R O N / O F F S w i tch to ON and
TO/TAC/T DS w i t ch to TO.
11. Al i g n lea d i n g edg e o f f i rst p u l se on le f t -mos t v e rtic a l g rat i c u le. Va ry CAL Ø
Cont r o l a nd ve r i fy pu l s es move a min i m u m o f 3 6 0°.
12. Set POW E R S w i t ch to OF F .
13. Di s c o nne c t tes t e qui p m e n t .

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(4) RF Che c k and L e vel
PREREQUISIT E S : 2-2 - 2 D ( 1 ) Power S u p ply
2-2- 2 D ( 7 ) XPDR/DME P u l s e Sha p i n g
TEST E Q U I P M E N T : 1 F r e quen c y C o unte r
1 Power Met e r w i th 510 7 5 S e nsor
1 Spe c t r um Ana l y z er
1 Powe r S u ppl y
1 50 ΩCoa x i a l Cabl e ( B NC to Type N)
1 VSWR B r i d ge
SET-UP DI A G R A M: None
NOTE: Duri n g p e rfo r m a n c e of th i s p r oce d u r e, if a c e rta i n c o ndi t i on or s p e cif i c ati o n
cann o t b e v eri f i e d, re f e r t o app r o p ria t e a sse mb l y t est pr o c edu r e i n 2 -2- 4 f o r
tes t i n g an d r epa i r of f a u lty a s s embl y .
STEP PROCEDURE
1. Set AT C - 1 4 00A- 2 c o ntro l s a s f oll o w s :
CONTROL SETTING
CW/NORM/OFF Switc h CW
TACAN ON/OFF Sw i t c h OF F
XPDR MODE Contro l A
FREQ/FUN C T I O N / SELECT T h u m b w h e els 10 0 0 X PDR
∆F Thu mb w h e e ls 000 O F F
2. Conne c t F requ e n cy Coun t e r to RF I/O Conn e c tor (J 1 5 ).
3. Set POWER Sw i t c h to ON. A l low a 10 min u t e w a rm-up pe r i o d.
4. Adjus t RF LE V E L Cont r o l for 0 d B m as d i s pl a y e d o n R F LE V E L -dBm D i s play .
5. Ver i f y fre q u enc y d i s pl a y e d on Fr e q uen c y C o unt e r i s 1 00 0 MHz (±1 0 k Hz).
6. Set FREQ/F U N C T I ON SELECT T h u m b w h e els to 1 0 9 0 XPDR.
7. Remove Fr e q uenc y C o u n ter fr o m RF I / O Co n n e cto r ( J 1 5). C o nne c t P o wer Meter
to RF I / O C o n nec t o r (J15 ) .
8. Ver i f y p ower l e v e l dis p l a yed o n P o w e r Meter i s 0 d B m . Adju s t R 3 2 29
(ALC/ Mi x e r A ssemb l y ) ( 2-2- 2 , F i gur e 2 6 ) a s nee d e d f or pr o p e r RF powe r l e v el.
9. Remove S MB c o a x ial c o n n ect o r f rom J 3 2 0 2 (AL C / M i x e r Asse mb l y ) (2-2 - 2 , F igu r e
26). Ve rify RF p o w e r l eve l ( A L C headr o o m) i ncr e a s es mini mu m of 4 d B f r om
lev e l i n S t e p 8.
10. Us i n g e xte r n a l Powe r S u p ply , a p p ly 5 V d c t o cen t e r c ond u c tor o f J 3 2 02
(ALC/ Mi x e r A ssembl y ) ( 2 -2- 2 , F i gure 2 6 ) . V e r ify RF o u t p ut le v e l dec r e a ses
mi nimum of 4 d B f r o m l e vel i n Step 8 .
11. Remov e e x tern a l P ower Su p p ly fro m J 3 2 02. Re c onn e c t coa x i al ca b l e to J3 2 0 2.
12. Set FR E Q / F U N CTION SEL E C T T h u mb wheel s t o 9 62 MHz. V eri f y R F po w e r leve l
is 0 dB (±0 . 6 d B).
13. Di s c onn e c t c oa x i a l cab l e f rom J32 0 2 . Ve r ify RF po w e r l e vel (A L C h e a droo m)
inc r e a ses m i n imum of 4 d Bm fr o m l eve l i n S t e p 12.
14. Us i n g e xte r n a l Powe r S u p ply , a p p ly 5 V d c t o cen t e r c ond u c tor o f J 3 2 02
(ALC/ Mi x e r A ssembl y ) ( 2 -2- 2 , F i gure 2 6 ) . V e r ify RF o u t p ut le v e l dec r e a ses
mi nimum of 4 d B f r o m l e vel i n Step 1 2 .

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STEP PROCEDURE
15. Remov e e xte r n a l Po w e r Supp l y from J 3 2 02. Re c onn e c t co a x ial c a ble t o J3 2 0 2 .
16. Set FR E Q / F U N CTION SEL E C T T h u mb wheel s t o 1 213 MHz . Ve rify R F p ower
lev e l i s 0 d B (±0. 6 d B ).
17. Di s c onn e c t c oa x i a l cab l e f rom J32 0 2 . Ve r ify RF po w e r l e vel (A L C h e a droo m)
inc r e a ses min i m u m o f 4 d B m fr om leve l i n S t ep 16 .
18. Us i n g e xte r n a l Powe r S u p ply , a p p ly 5 Vd c t o cen t e r c ond u c t or of J 3 2 0 2. V eri f y
RF outp u t l eve l d e c rea s e s a m i nimum of 4 dB f r o m l e v el in S t e p 1 6.
19. Remov e e xte r n a l Po w e r Supp l y fro m J 3 2 0 2.
20. Rec o n nec t S M B c o a xia l c onn e c t or to J 3 2 02.
21. Set FR E Q / F U N CTION SEL E C T T h u mb wheel s t o 1 090 XP D R .
22. Ve r i fy RF powe r l e v el di s p laye d o n P ower Mete r i s 0 d Bm. A d j ust R3 2 2 9
(ALC/ Mi x e r A ssemb l y ) ( 2-2- 2 , F i gur e 2 6 ) a s nee d e d f or pr o p e r RF powe r l e v el.
23. Us i n g P ower Met e r , v eri f y R F p o wer lev e l a s shown i n 2 - 2-2, T a b le 48 fo r
frequ e n c ies s e lec t e d o n FREQ/F U N C T ION SELE C T T h u mb whee l s .
FREQ/FUNCTION S E L E C T T H U M B W H E ELS SETTING RF P O W E R O U T P U T
962 M H z
100 0 M H z
105 0 M H z
110 0 M H z
115 0 M H z
121 3 M H z
0 dB m ( ±0 . 6 dB)
0 dB m ( ±0 . 6 dB)
0 dB m ( ±0 . 6 dB)
0 dB m ( ±0 . 6 dB)
0 dB m ( ±0 . 6 dB)
0 dB m ( ±0 . 6 dB)
RF Po we r L eve l v ers u s Fre q u e ncy
Tab l e 48
24. Set FR E Q / F U N CTION SEL E C T T h u mb wheel s t o 1 090 MHz .
25. De c r e ase R F L E V EL Co n t r o l in 1 dB i n c r ements f r o m 0to - 30 dBm. Ve r ify R F
LEVE L - d B m di spl a y a n d Powe r Me t e r r efl e c t s ame RF lev e l ( ±0.3 d B ) .
26. Dis c o n nec t P o w e r Me ter f r o m RF I / O C o n nect o r . Conn e c t V SWR Bri d g e with
Spec t r u m Anal y z e r to R F I /O Conn e c t or. Verif y V SWR, o n S p ect r u m A n aly z e r ,
is 1.2 : 1 f rom 102 0 t o 1 1 55 MHz.
27. Dis c o n nec t V S WR Br i d g e fr o m R F I /O Con n e c tor . Co n nec t S pect r u m Anal y z e r
to RF I/O Conne c t o r. S e t Spe c t r um Anal y z e r con t r ols a s f o l lows :
CONTROL SETTING
Cent e r Freq u e ncy C o n tro l 109 0 M H z
Sen s i t ivi t y Cont r o l 2 dB / D i v
Vide o F ilt e r C o ntr o l 300 H z
Disp e r sio n C o ntr o l 50 k H z / Div
Ban d w i d th Co n t rol 30 k H z
Refer e n ce L e v el -30 d B m
Sweep C o n trol 20 ms/ D i v

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STEP PROCEDURE
28. De c r e ase R F L E V EL Con t r o l in 1 dB in c r ements f r o m -3 0 t o -110 d B m . Veri f y
RF LEV E L - d Bm Displ a y a n d Spec t r u m An aly z e r r e fle c t s a me R F LEVE L
(±0.5 d B from - 3 0 t o - 9 0 d Bm an d ±0 . 7 dB fro m -9 0 t o - 1 10 dBm).
NOTE: Depe n d i ng on S p e c tru m An a l y zer u s e d , a 30 dB A mp l i f ier may b e
nec e s s ary o n R F I / O C o n nec t o r t o dis p l ay le v e l s bel o w - 1 00 dB m.
29. Se t A T C - 1400 A - 2 c ont r o l s as fo l l o ws:
CONTROL SETTING
RF LEVE L C o n t rol 0 dBm
CW/NORM/OFF Switc h CW
PRF/S QT R T h u mbwhee l s 000 0
FREQ/FUN C T I O N S E L ECT Thumbw h e e l s 1090 X P D R
30. Se t S p ectr u m A n a lyze r r e fere n c e leve l t o 0 d Bm.
31. Ad j u s t Spe c t r um Analy z e r C e nte r F r equ e n cy to p o s iti o n p e ak a mp l i t ude o f C W
sig n a l a t cen t e r of di s p l ay.
32. Set C W / N OR M / O F F Swit c h t o O F F a nd Sp e c t rum Ana l y z er Ref e r e nce L e v e l for
-70 d B . Veri f y 80 dB i s dis p l aye d o n Sp e c t rum A n a l yze r .
33. Set FR E Q / F U N CTION SEL E C T T h u mb wheel s t o 1 09 0 MHz X. Ve rify 8 0 dBc i s
dis p l a yed o n S p ect r u m A n a lyz e r .
34. Se t S p ect r u m A n a lyz e r r eso l u t ion t o 5 0 k H z . V e rif y p h a se no i s e is 55 d B c a t
150 k H z fro m c e n ter f r equ e n c y.
35. Set FR E Q / F U N CTION SEL E C T T h u mb wheel s t o 9 62 MHz X. V e rif y p h ase n o i s e
is 55 d B c a t 1 50 kHz f r o m ce nte r f r equ e n cy.
36. Se t S pec t r u m Anal y z e r co n t rols a s fol l o w s :
CONTROL SETTING
Sen s i t iv i t y C o ntr o l 10 dB / D i v
Disp e r s ion Co n t rol 1 MH z /Div
Sweep Co n t r ol 50 ms / D i v
Refe r e n ce Le v e l 0 dBm
NOTE: Do not o v e r dri v e S p ect r u m A n a lyz e r v e r t i c al ampl i f ier , a s t his g i v e s a
fal s e i n dic a t ion o f s p u rs on A T C - 1 400 A - 2 R F l eve l o u t put .
37. Af t e r v eri f i c ati o n o f s ign a l f r om ATC-14 0 0 A -2 is r e f e ren c e d a t 0 dB, se t
Spec t r u m Analy z e r r efe r e n ce le v e l t o -20 d B .
38. Wh i l e tun i n g S pec t r u m An aly z e r cen t e r fre q u ency f r o m 35 0 to 18 0 0 M H z , v e rif y
any o r a l l s pur s a p pea r i ng on d i s pla y a r e 60 dB c .
39. Set FR E Q / F U N CTION SEL E C T T h u mb wheel s t o 1 100 MHz .
40. Wh i l e tun i n g S pec t r u m Analy z e r cent e r fre q u e ncy f r o m 35 0 to 18 0 0 M H z , v eri f y
any o r a l l s pur s a p pea r i ng on d i s pla y a r e 60 dB c .

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STEP PROCEDURE
41. Set FR E Q / F U N CTION SEL E C T T h u mb wheel s t o 1 200 MHz .
42. Wh i l e tun i n g S pec t r u m Analy z e r c ent e r fre q u e ncy f r o m 35 0 to 18 0 0 M H z , v e rif y
any o r a l l s pur s a p pea r i n g on d i s pla y a r e 6 0 dBc .
43. Set FR E Q / F U N CTION SEL E C T T h u mb wheel s t o 1 034 MHz .
44. Se t S p e ctru m An a l y zer ce n t e r fre q u enc y t o 8 34 MHz an d v e r if y a l l s pu r s
app e a r ing o n dis p l ay a r e 60 d B c .
45. Set FR E Q / F U N CTION SEL E C T T h u mb wheel s t o 1 124 MHz .
46. Se t S p e ctru m An a l y zer ce n t e r fre q u enc y t o 9 24 MHz an d v e r if y a l l s pu r s
app e a r ing o n dis p l ay a r e 60 d B c .
47. Set FR E Q / F U N CTION SEL E C T T h u mb wheel s t o 1 213 MHz .
48. Se t S p e ctru m An a l y zer ce n t e r fre q u enc y t o 1 01 3 MHz a n d v e ri f y a l l sp u r s
app e a r ing o n dis p l ay a r e 60 d B c .
49. Se t A T C - 1400 A - 2 c ont r o l s as fo l l o ws:
CONTROL SETTING
RF LEVE L C o n t rol 0 dBm
PRF/S QT R T h u mbwhee l s 270 0
FREQ/FUN C T I O N S E L ECT Thumbw h e e l s 109 0 M H z X
50. Se t S pec t r u m Anal y z e r co n t rols a s fol l o w s :
CONTROL SETTING
RF Inpu t L e v el 0 dBm
Fre q u enc y T uni n g 109 0 M H z
Fre q S pan / D i v 200 k H z
Reso l u t io n C o n t ro l 100 k H z
dB/Di v 10 d B
Time/Di v As r e q u ire d
51. Con n e c t Sp e c trum A n a l yzer t o RF I/ O Co n n ecto r .
52. Ad j u st fr e q u enc y t u n ing o n S p ectr u m A n a lyz e r s o cen t e r of di s p lay e d s ign a l i s
cent e r ed on d i s p lay . Vary RF L E V EL Co n t r ol so d i s p lay s i g n al is a t t o p
gra t i c ule . Re cor d a m p l itu d e o f d isp l a yed s i g n al.
53. Set C W / N OR M / O F F Swit c h t o N O R M . Re cor d a m p l i tud e o f d isp l a y ed si g n al at
±800 k H z fro m c e n ter f r equ e n c y.
54. Su b t rac t a m p l i tud e o f s ign a l n o ted i n S t ep 55 f r o m c e n ter f r e q uen c y l evel .
Ver i f y l eve l d i ffe r e n ce is > 6 0 d B c.
55. Set POW E R S w i t ch to OF F .
56. Di s c o nne c t tes t e qui p m e n t .

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(5) TA C A N AM
PREREQUISIT E S : 2-2 - 2 D ( 1 ) Power S u p ply
TEST E Q U I P M E N T : 1 Os c illo s c o pe
1 Mo dul a t i on Met e r
1 50 ΩCoa x i a l Cabl e ( B NC to Type N)
1 50 ΩCoa x i a l Cabl e ( B N C t o B NC)
SET-UP DI A G R A M: None
NOTE: Duri n g p e rfo r m a n c e of th i s p r oce d u r e, if a c e rta i n c o ndi t i on or s p e cif i c ati o n
cann o t b e v eri f i e d, re f e r t o app r o p ria t e a sse mb l y t est pr o c edu r e i n 2 -2- 4 f o r
tes t i n g an d r epa i r of f a u lty a s s embl y .
STEP PROCEDURE
1. Set AT C - 1 4 00A- 2 c o ntro l s a s f oll o w s :
CONTROL SETTING
CW/NORM/OFF Switc h CW
DME D E V P 2/ CAL Swit c h CAL
TO/TAC/T DS w i t c h TAC
PRF/S QT R ON/OFF S w i t c h ON
IDENT TONE/ OF F / C O D E S w itch OF F
TACAN ON/OFF Sw i t c h OF F
DME R EPLY EFFI C I E N C Y C ontrol 100 %
PRF/S QT R T h u mbwhee l s 200 0
FREQ/FUN C T I O N S E L ECT Thumbw h e e l s 109 0 M H z Y
∆F Thu mb w h e e ls 000 O F F
2. Adju s t R F L E VEL Co n t r o l from -50 dB m to 3 d B p a s t Loc k - On , on Modu l a tio n
Me ter , a p p rox i m a t e ly -2 5 d B m, a s dis p l a yed on R F L E V EL -d B m D i s p lay.
CAUTION: DO NOT OVERDRIVE INP U T T O MODULATION M E T E R , A S T H I S
CAUSES ERRONEOUS % MODULATION READINGS ON THE
MODULATION METER DISPL A Y .
3. Conne c t M o d ulat i o n M e ter to RF I / O Co n n e cto r .
4. Set Modu l a tion Met e r c ontr o l s a s fol l o w s :
CONTROL SETTING
Tuni n g ( Auto / E x t) Auto
High P a s s F i l t er ( H z ) 300
Low P a s s Fil t e r (kHz ) 3
Peak Pk-P k / 2
Rang e 10
Fun c t ion kHz De v i ati o n
5. Set POWER Sw i t c h to ON and a l l ow 10 minut e w a r m- up pe r i o d.
6. Ver i f y peak t o p e ak FM is <5 k H z a t 1 0 90 MHz.
7. Set FREQ/F U N C T I ON SELECT T h u m b w h e els to 9 6 2 M H z . V e rify p e ak t o p eak
FM is ≤5 kHz.
8. Set FREQ/F U N C T I ON SELECT T h u m b w h e els to 1 2 1 3 MHz. V erif y p eak t o peak
FM is ≤5 kHz.
9. Set TACA N ON/ OF F S w i t ch to ON. C o n nec t O s c i llo s c ope e x t e rna l t r igg e r t o
SYNC Conn e c tor ( J 2 0 ) an d Os c i llo s c o pe Cha n n el A , u s ing X1 0 p r o be, t o P 3 2 01,
Pin 7 ( A LC/Mixe r A ssembl y ) (2-2 - 2 , Figu r e 2 6).

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STEP PROCEDURE
10. Se t O s c ill o s c op e c o n tro l s a s fol l o w s :
CONTROL SETTING
Ver t i c al S e n sit i v ity 0 .05 V / Div
Coupl i n g Swi t c h DC
Trig g e r Sour c e C o ntro l EXT S Y N C
Sweep 2 ms/Di v
11. Set C W / N OR M / O F F Swit c h t o N O R M .
12. Ad j u s t R32 2 4 ( TACAN A M N U L L Contr o l ) (ALC/ Mi x e r Asse mb l y ) (2-2 - 2 ,
Figu r e 2 6) fo r mi n i m u m r i p ple o f w a v e for m (t o p p u lse s ) d i spl a y ed on
Os cil l o scop e ( 2-2 - 2 , Fig u r e 29 ) .
7503001
Disp l a y ed W a vef o r m w i th Mi n i mu m Ripp l e
Figu r e 29
13. Set C W / N OR M / O F F Swit c h t o C W .
14. Se t M o d ula t i o n Mete r C o ntro l s as f o l l ows:
CONTROL SETTING
Tuni n g Auto
High P a s s Fi l t er ( H z ) 10
Low P a s s Fil t e r (kHz ) 3
Peak Pk-P k / 2
Rang e 100
Func t i on % AM
15. Pr e s s spri n g l oade d S 2 601 (T A C A N T e st Swi t c h ) (20 0 MHz Gen e r a tor A s s e mbly)
(2-2 - 2 , F igu r e 2 6 ) to le f t - mo st po s i t ion ( 1 5 H z ). V e rify M o d u lati o n Me ter
dis p l ay s 2 1 % ( ±1%).
16. Pr e s s s pri n g l o ade d S 2 6 01 (T A C A N T e st Swi t c h ) (20 0 MHz Gen e r a tor A s s e mbly)
(2-2 - 2 , F igu r e 2 6 ) to rig h t - most po s i t ion ( 1 3 5 Hz). Ve rify Mo d u l ati o n M e t er
dis p l ay s 2 1 % ( ±1%).
17. Wi t h S W26 0 1 i n c ent e r p o sit i o n (bo t h 1 5 a nd 135 Hz ) , v eri f y M o d u lat i o n M e t er
dis p l ay s 4 2 % ( ±2%).
NOTE: Compos i t e mo dul a t ion may c a u se er r o neo u s r ead i n gs du e t o p h as e - l ock
cir c u i try i n mo d u lat i o n m e t er.
18. Set POW E R S w i t ch to OF F .
19. Di s c o nne c t tes t e qui p m e n t .

MAI NT EN ANCE MANUA L
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Subj e c t t o Exp o r t C o ntr o l , s ee Cov e r P a ge fo r d e t ails . Feb 2/0 9
(6) SLS Le v e l
PREREQUISIT E S : 2-2 - 2 D ( 1 ) Power S u p ply
2-2 - 2 D ( 4) RF Chec k a n d Lev e l
TEST E Q U I P M E N T : 1 Os c illo s c o pe
1 Sign a l Ge ner a t o r
1 Hete r o d yne Mo n i t or
3 50 ΩCoa x i a l Cabl e s ( B NC to BNC)
1 Power M e t e r wit h 5 7318 s e nso r
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
1.45æS
1.0æS
SYNC
TAC
D
O
TT
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
00
+
0 0 0
0 0 0
0 0 0 0
7506008A
HET
LO IN RF IN IF OUT
MONITOR
GEN
SIGNAL
OUTPUT
MHz
NMi
KTS
CODE
NMi
XPDR/DME Pu l s e S paci n g a nd Sha p i ng
Figu r e 30
NOTE: Duri n g p e rfo r m a n c e of th i s p r oce d u r e, if a c e rta i n c o ndi t i on or s p e cif i c ati o n
cann o t b e v eri f i e d, re f e r t o app r o p ria t e a sse mb l y t est pr o c edu r e i n 2 -2- 4 f o r
tes t i n g an d r epa i r of f a u lty a s s embl y .
STEP PROCEDURE
1. Set AT C - 1 4 00A- 2 c o ntro l s a s f oll o w s :
CONTROL SETTING
CW/NORM/OFF Switc h NORMAL
SLS/ECHO ON/ O F F S w i t c h OFF
XPDR PULSE WID T H V A R / C A L S w itch CAL
FREQ STEP R A T E C o n trol OF F
MA N / AUTO/MAN STEP Sw i t c h MA N
XPDR DEV P3/CAL Sw i t c h CAL
XPDR DEV P2/CAL Sw i t c h CAL
TO/TAC/T DS w i t c h TO
PRF/S QT R ON/OFF S w i t c h ON
POWER Switc h ON
TACAN ON/OFF Sw i t c h OF F
XPDR MODE Contro l A
PRF/S QT R T h u mbwhee l s 100 0
FREQ/FUN C T I O N S E L ECT Thumbw h e e l s 1090 X P D R
SLS/ E C H O T h umbwhe e l s -0
RF LEVE L C o n t rol -10

MAI NT EN ANCE MA N UAL
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Subj e c t t o Exp o r t C o ntr o l , s ee Cov e r P a ge fo r d e t ails . Feb 2/0 9
STEP PROCEDURE
2. Conne c t t est eq u i pment to A T C - 1 400 A - 2 a s sho w n i n 2 - 2-2 , F i g ure 3 0 .
3. Set Si g n a l Gener a t o r for 1 0 9 0 M H z a t + 5 dBm.
4. Set Os c i l los c o pe co n t rol s a s f o llo w s :
CONTROL SETTING
Ver t i c al Se n s iti v i t y Cont r o l 0.0 1 V / D i v
Trig g e r S ourc e C o n t r ol EXT SY N C Tr i g g er
5. Usin g V e rni e r C o n tro l , p o sit i o n pea k o f p o sit i v e goin g P 1pul s e on t h i r d
hor i z o nt a l a x is (o n e g rat i c ule d i v i si o n ab o v e m a j or ho r i zont a l a xis ) . Adju s t
ver t i c al v e r n ier s o P 1p uls e a m p l itu d e i s fiv e g r at i c u le d i v i si o n s o n Osci l l osc o p e
dis p l ay.
6. Set Os c i l los c o pe Ve r t i cal S e n sit i v i ty Con t r ol to 0 . 0 05 V/Di v .
7. Usi n g p o sit i o nin g c o n tro l , p osi t i o n pea k o f P 1pu l s e on ho r i z on t a l a xis o n e
gra t i c ule p o s iti o n f r om top of CRT d i s p lay .
8. Set CW/ N O R M/ OF F S w i tch to CW . Verif y d i ffer e n ce bet w e e n tran s p ond e r p u lse
lev e l a nd CW is ≤2 % .
9. Set CW/ N O R M/ OF F S w i tch to NORM, FRE Q/ F U N C TION SELE C T T h umbwheel s
to MHz X an d T O/ T A C/TDSw i t c h t o TD.
10. Ve r i fy di f f e ren c e b etwee n D ME p u l se le v e l a nd CW is ≤2 % .
11. Se t P R F /SQTR T h u m b w h e els t o 101 0 . Recor d r e fere n c e leve l . Set P R F / S QTR
Thu mb w h e e ls t o 1 0 a n d ve r i f y % ch a n g e is <1%.
12. Se t T O/ T A C /TDSwi t c h t o TO, PRF / S Q T R T humbwhe e l s to 1 0 1 0 and
FREQ/FUN C T I O N S E LECT Thu mbw h e e l s to 10 9 0 X P DR.
13. Rec o r d r efe r e n ce le v e l . S e t PRF/S QT R T h u mb wheel s t o 10 a n d ver i f y % c h a n ge
is < 1 % .
14. Us i n g pos i t i oni n g c ont r o l , pos i t ion p e a k of P 1p u l se on h o r izo n t al ax i s o n e
gra t i c ule f r om to p o f CRT d i spl a y .
15. Set XPDR PUL S E W I D T H V AR/CAL Sw i t c h to VAR an d X P D R PULSE WI D T H
T h u m b w h ee l s to 0 . 2 0
µ s. V e r ify c h a nge i n a m p l i tud e i s < 3 %.
16. Set X P D R P ULSE W I D T H T humbwhe e l s to 0.45 µ s. V e r ify c h a nge in a mp l i tud e
is < 2 % .
17. Dis c o nne c t t est e q u ipmen t a n d con n e ct po w e r meter s e n s or to AT C - 1 4 0 0A-2
RF I/O as sh o w n i n F igu r e 3 1 .

MAI NT EN ANCE MANUA L
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Subj e c t t o Exp o r t C o ntr o l , s ee Cov e r P a ge fo r d e t ails . Feb 2/0 9
STEP PROCEDURE
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
WATTS
MHz
UNIT UNDER TEST
XMTR PWR
XMTR FREQ
REPLY
Hz
XPDR-%
DME-PRF
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
TT
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
DISPLAY SELECT
PRF SQTR Hz
MHz
NMi
KTS
CODE
NMi
FREQ
RANGE
VEL
XPDR
DME DIST
XPDR
000 0
OFF
00 000 0 0
OFF
0000 0
0
00
+
0 0 0
0 0 0
0000
7506008
RF IN TRIG IN
Power Meter
Ext
POWER
I
SLS Le v e l C a lib r a t ion T e s t S etu p D i a g ram
Figu r e 31
18. Se t A T C - 1 400 A - 2 c ont r o l s as fol l o w s :
CONTROL SETTING
SLS/ECHO ON/ O F F S w i t c h ON
XPDR PULSE WID T H V A R / C A L S w itch CAL
FREQ STEP R A T E C o n trol OF F
MA N / AUTO/MAN STEP Sw i t c h MA N
XPDR DEV P3/CAL Sw i t c h CAL
XPDR DEV P2/CAL Sw i t c h CAL
TO/TAC/T DS w i t c h TO
PRF/S QT R ON/OFF S w i t c h ON
XPDR MODE Contro l A
PRF/S QT R T h u mbwhee l s 100 0
SLS/ E C H O T h umbwhe e l s -0
RF LEVE L C o n t rol -10
STEP PROCEDURE
19. Set P o w er Met e r a s fo l l o w s:
CONTROL SETTING
Me asu r e P u lse Mo d e
Of fse t 0
Fre q u enc y 1 0 90 MHz
Aver a g ing 6 4
Cal fac t o r 0.0
Vide o B a ndwid t h High
Vert i c a l Spa n 20 d B
Vert i c a l Cent e r -10 d B m
Unit Lo g dBm
Reso l u t io n X.XXX
Ma rke r Mo d e Vertic a l
Time Spa n 5.0 u S
Time Po s i t ion Mi ddle
Time De l a y 2.0 u S
Tri g L e v el -10 d B m
Trig S l o p e Posi t i v e
Hold o f f 0.0 0
Trig S o u r ce Se nsor 1
Trig Mod e A u t o
20. Pu s h t h e “GRAPH’ b u t t on twi c e t o g et menu s e t t ing s a t t o p of sc r e e n.