Anritsu 680 C Series, Maintenance Manual

Page: 53 / 317

FUNCTIONAL RF DECK
DESCRIPTION ASSEMBLIES
2-24 690XXB/691XXB MM
F M
M A I N
B I A S
M o d u l a t o r
C o n t r o l
S w i t c h
C o n t r o l
> + 1 7 d B m
5 0 0 M H z
D o w n C o n v e r t e r A s s y .
D 2 7 3 3 0
8 . 4 - 2 0 G H z
2 - 8 . 4 G H z
> + 4 d B m
3 . 3 G H z L P F
5 . 5 G H z L P F
8 . 4 G H z L P F
1 3 . 5 G H z L P F
L e v e l
C o n t r o l
6 . 5 1 - 8 . 5 G H z
J 5
J 2
J 3
L P F
6 . 5 G H z
J 3
J 1
S a m p l e r
( - 7 t o - 1 4 d B m
t y p i c a l )
J 6
J 2
J 1
2 - 2 0 G H z
Y I G O s c i l l a t o r
S w i t c h
C o n t r o l
B i a s
0 . 0 1 - 4 0 G H z
> + 1 0 d B m
S w i t c h e d F i l t e r A s s y . - D 4 5 1 9 8
0 . 0 1 - 2 G H z
> + 1 6 d B m
8.5
G
H
z L
P
F
x 2
2 0 - 2 5 G H z B P F
2 5 - 3 2 G H z B P F
3 2 - 4 0 G H z B P F
> + 2 0 d B m
2 0 G H z L P F
S w i t c h e d D o u b l e r M o d u l e - D 2 8 5 4 0
J 1
J 4
B i a s
B P F
S o u r c e Q u a d r u p l e r M o d u l e
J 1
M o d u l a t o r
C o n t r o l
x 4
0 . 0 1 - 6 5 G H z
( 0 . 0 0 0 0 1 - 6 5 G H z
w i t h O p t i o n 2 2 )
9 0 d B
S t e p
A t t e n u a t o r
( O p t i o n )
D i r e c t i o n a l
C o u p l e r
C o n t r o l L e v e l
C o n t r o l
R F O u t p u t
J 2
( J 1 )
À
J 2
F o r w a r d
C o u p l e r
J 3 Á
1 6 . 8 G H z L P F
& 6 d B P A D
Â
S o u r c e Q u a d r u p l e r M o d u l e
P a r t N u m b e r s :
D 2 8 1 8 5 ( 4 0 - 5 0 G H z )
6 0 - 1 4 1 ( 4 0 - 6 0 G H z )
6 0 - 1 4 2 ( 4 0 - 6 5 G H z )
S Q M P / N D 2 8 1 8 5 c o n t a i n s a
F o r w a r d C o u p l e r .
F o r w a r d C o u p l e r P / N C 2 7 1 8 4 i s
u s e d w i t h S Q M P / N s 6 0 - 1 4 1 a n d
6 0 - 1 4 2 .
À
Á
T h e 1 6 . 8 G H z L P F a n d 6 d B P A D ,
P / N B 2 8 6 1 2 , i s u s e d w i t h
S Q M P / N s 6 0 - 1 4 1 a n d 6 0 - 1 4 2 .
Â
D i p l e x e r
4 6 5 0 4
0 . 0 0 0 0 1 - 2 G H z
D i p l e x e r
2 9 8 5 0
0 . 0 1 - 1 0 M H z
R F P a t h w i t h O p t i o n 2 2
L o s s A - C < 2 d B
L o s s B - C < 2 d B
A
B
C
L o s s A - C < 1 . 5 d B
L o s s B - C < 1 . 5 d B
A
B
C
A 1 3
D D S
( O p t i o n 2 2 )
C o n t r o l
C o n t r o l
> + 1 5 d B m
R F P a t h
w i t h
O p t i o n 2 2
Figure 2-7. Block Diagram of the RF Deck Assembly for
Models 69077B/69177B, 69087B/69187B, and 69097B/69197B.