HP 8340A Service Manual page 132

Synthesized sweeper 10 mhz to 26.5 ghz
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�--'
IOIOi•
FRO• A29
RE F ERENCE
PHASE OETECTOR
"OUTPUT SWI T CH OPERATION
AF•
>I OOl(Hz
CIMH1 TO
IOOt<Hr
TO loOHz
Model 8340A
,. -----------------,
I
I
I
.:'}MHz
I
I
NI'
3,80-13.97
A37
PLLI DIVIDER
..
- - - - - - - - - - -
- - - - _
.. �H*IOUHr
Fl
POSlTHlll!
Figure
8C-6.
Scans by HB9HCA and HB9FSX
Service
-
,.-------------------------------------,
1
?.00 TO 300Lfi•
I
I
GAIN
SWlTCHlN<i
A36
PLLI
VCO
,.--------------------,
I
I
1
A38
:
PLLI IF
�---------
.... - - - - - - - _ ..
160. I� TO 166Lfit
FROM A39 PLL3
UPCONVERTER
PLLJ
Simplified Diagram
«ounur
SWITCH! I
I
I
:
F PLL3
NI
+
I
I
- - .. - - .... - - - - _ ..
I
I
I
F20/30
T
15
30t.IH•
O
fnOM A40
P LL2 VCO
8-177/8-178

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