Agilent Technologies 8935 Series, Manual

Page: 316 / 343

Ch
ap
te
r 10
31
5
Bl
oc
k D
ia
gr
ams
Ref
er
ence
/R
eg
u
lator
S
ect
ion
F
ig
u
re
1
0
-2
1
Re
fe
r
e
n
c
e As
s
e
mb
ly
, A2
A2
3
REFERENCE ASSEMBLY, A2A23
S
Y
N
T
H
+10/
+50
500 kHz
HPF
10 MHz
REF IN
10MHz
OUT-OF-LOCK
OVERRIDE
EXT REF
X2 FREQ
DOUBLER
10-20MHz
10
00 MH
z
ON
/OFF
OUT-OF-LOCK
+50
OSC
FREQ
LOCK
2 DACS
ADJUST
FREQ
10MHz TCXO
OR
OPTIONAL OCXO
1GHz
VCO
1GHz
+2
1000 MHz
ON/OFF
1
000M
H
z
LO
I.O.
SG
REF
SY
N RCVR
REF
20M
H
z
TO
COUNT
ER
TO
SA
10MH
z
TO
SI
D
E
PA
N
E
L
GND
20
M
H
z
A A A
MOTHERBOARD P/O
A2A1
10MHz
OUT
(GENREF)
7dBm
MIN
SINE
+5dBm
UPCONVERTER
REF
TO SA
CMOS CMOS
1MHz
1MHz
TO
RCVR
SYNTH
RCVR
TO
SYNTH
+1
2
.4
+5
.1
-12
.4
CK D EN
/I
DIAG
DIAG
5
00MH
z
LO
(2 DACS
ADJUST)
.20M +10M REFS OUT:
ARE < -90dBc SPURS
> 5K OFF
10M (RCVR) < -110 dBc > 5 kHz
10MHz
REF IN
(GENREF)
10MHz
SINE
-10dBm
TO RCVR
SSB BFO
TO
OCXO
+12V
AUX