MAI NTENANCE MANUAL
ATC-1400A-2
2-2-2
Page 3 7
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
STEP PROCEDURE
6. Usin g O s c i llo s c o pe, v e r ify 0 . 6 Vp - p ( typ i c a l ) a t 5 0 0 W . F
7. Adj u s t Osci l l o sco p e swee p a nd p o s iti o n i ng c o n tro l s unt i l dis p l a yed 5 0 % vi d e o
pul s e i s 1 0 g r ati c u les l o n g.
8. R otat e R F LEVE L C o n trol u n t il 50 W i s di s p l a yed o n X MTR PWR W A T T S
Disp l a y .
9. Usin g O s c ill o s c ope , v eri f y 50% v i deo p u l se i s minimum 9. 5 g rat i c u les l o ng.
NOTE: If a m p l ifie r i s co mp r e s s ing , t e st i s i nacc u r a te. A m p l i fie r m u s t be l i n e ar.
87654321
O
N
O
F
F
GPIB ADDRESS
IEEE 488 - 1978
SH1
L4
PP0
AH1
LE0
DC1
T6
SR1
DT1
TE0
RL1
C0
ON
OFF
1
0
1
0
1
0
1
0
1
0
A1A5
SW701
0103
10. Ens u r e Switc h e s 1 an d 2 of S W 7 0 1 (Rea r P a nel) a r e set t o ON.
11. Rota t e R F LEV E L C o ntro l c cw un t i l X M T R PWR W A T T S Dis p l a y ind i c a tes 2 W.
12. Ve r i f y 5 0 % vid e o pul s e d isp l a yed o n Oscil l o s cop e d oes n o t o s c i lla t e o r
dis a p p ear . D e cre a s e le v e l and v e rif y s li c e r qui t s betwe e n 1 an d 2 W r e a d i ng.
13. Rec o n n ect 5 0 Ω Termina t i o n to E X T E RNAL RF Con n e c t or (J 2 2 ) .
14. Conn e c t tes t e q uip men t t o AT C- 1 4 0 0 A-2 a s shown i n 2-2- 2 , F igu r e 3 8.
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
1.45S
1.0S
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
7506012
PULSED RF
PWR METER
PEAK
COUPLER
POWER
SOURCE
MHz
NMi
KTS
CODE
NMi
Tran s mi t t e r Po we r C a libr a t i o n Te s t S etup D i a g ram
Figu r e 38
To Next Page
Loading...
