38
User’s and Service Guide N5281-90001
N5281A
Operational Check
Figure 30
N5281A Block Diagram (Option 001)
LO
IF
RF
LO
IF
RF
LO
IF
RF
LO
IF
RF
LO
IN
A
BC
D
AT
TE
NU
AT
O
RS
5
Vol
t
Po
we
r S
upp
ly
20
dB
10
dB
5
dB
20
dB
10
dB
5
dB
20
dB
10
dB
5
dB
20
dB
10
dB
5
dB
333
25-
60
01
1
+/
-9
Vol
ts
DC
+
15
Vol
ts DC
11
71
3C
N5
281
A
O
pt 001
09
50-
47
29
A
B
C
D
RF
IN
A
B
C
D
IF
O
UT