Aeroflex ATC-1400A-2 - Discriminator Frequency Calibration Procedure

MAI NTENANCE MANUAL
ATC-1400A-2
2-2-2
Page 3 9
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
(11) Di s c rimina t o r Fre q u e ncy
PREREQUISITES : 2-2- 2 D ( 1 ) P ower S u p p l y
2-2- 2 D ( 4 ) RF Ch e c k and L e v el
TEST E Q U I P M E N T : 1 O s c i llos c o p e
1 Dual P u l s e Gen e r a t or
1 L Ba n d A mplifie r
1 50 Ω BNC T e e C o nnec t o r
1 50 Ω Lo a d
4 50 Ω Coa x i a l Cabl e s (BNC to B N C )
1 50 Ω Coa x i a l Cabl e ( S MB to B NC)
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
7506013
TRIG
OUT
GEN
TO DISCRIMINATOR ASSEMBLY (J5201, PIN 8)
TO VIDEO ASSEMBLY (TP3501)
DUAL PULSE
MHz
NMi
KTS
CODE
NMi
P
1
/P
2
Pos i t i onin g C a l ibr a t i on T e s t Set u p D i agr a m
Figu r e 39
NOTE: If d u ring p e rfor ma n c e of t h i s pro c e d u re, a cer t a i n co n d i tio n o r s p e c ific 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.