Download Print this page

HP 8731B Operating And Service Manual page 9

Pin modulators

Advertisement

I
"
.
:'
",'
',',
"
'
,.
"
"
;1
,
:
, ,I
I i I
\
'~
. I
i '
',I,
\
J
" ,
'.1 -, \..
:~
""",:.' "
.,
,
,0
-,
"
"
)
i"
:
"
\
.:;
}
\
t '
\
r.: ..
t,
0,
j
,
,
"
""
''',
",
"
., :.' ' I
.~\
,I
;
.'
.
.':,
I"
,
,
,.
3300
.1
\ '
"
,"
I."
.'\'
,',":
"
-.:
. ; .., OUTpUT
., I
.... i·iov
lI/,.lOA-C-1
\
:
~
, .,.1,
'"
"
"
, \ \,
\1"\;.;:" - - -•
I '
,
1
, ' , .
)
il' "
i
.
"
I '
i'
I,
'\'
~"
'
,"
"
,
,,'
'I
,,360'
I'
.
1,1
'
2000
10K
,
"
0"
i'51<
<. ")'
"
"II-
\,
'.,",
'l,'
";"
.:'
./
,\
'
'./' ,!OOO
"
I,,'
,
1
"
\ , \
II
·;:;20V
I
' . '
:1"
\
J,I
,
"
JI, .
j
,
,
'
. ' ,
I
,I"
,
\,
1',1
)
1'1
"
..
'
,
,
.)
"
,
"
a ,
',I'
.;",',1
""
i3Q
I,'
':'':'20'/'
I",
,,_
' ..
"r:,:::.' , . ')';,','
','1,
,\
".
\,
.
.
NOTE
,
!
\
,
, I '
To
,properl).' a£/jus( the input ~ivider,
slarr'bY,4Pplying ground to the, input,
,and going positive.
'
\
"
I
.
"1)
,
'.'.
I
,
(c) For,
fm,~d
adjustment, observe RF output sig.
nal and'adjust circuit for f?PU:rhum operation.
' \
l
,
,
.
)t~~:>:·~'
.r:
\' ',I' /
""
.,
\
,
:.
-f,'
"
,
.;
"
';'j"'",I'/'
.:
",',':/'.' ',:.'
I'
J
~',
\
,
,
I'
'I
.:\1:,
I
\'
.
y
,
,
't,'
,"
,
,
"
' , <,,:' > ? '
.' : ,'
. .
:,' (' ,
,'.
~
.
I
l
\,',
,')
"I, '
.
,
j
i '
,
':'
!
JJ'i,ure
12B..
1'ypica/ Sh,QpiligCircuit, . '
"ft',',1
I. ,.
'
,'\
.
I
'. ,
I ,
I ,
;' .',
.~
I •
.
,
,,'
.,
'I
",
.I,i' ,
,,'
' I '
"
I..
"
'
,
\ "
,
.\
,,/
,.','
,
"
j.
,"
:'
, i'
/
'I
)
,
.1
)
,
:.~
"
') i,
~
, .
I
+
,,'
\
.1
:.1 I, \
~t2V· ~.'
"1\ I,
~
" . ",I .'"
. .",,,,'.' '..
,,
I
'
, )'
,~
,:i!
",
NOTES ';, .'
. . "
"
' "
P
ALL
,~PN~"TR'ANS;IStCR~'ld'54~000'5
2,PNP
TRAN'siSTORS
185~'·'OQ09
',\ '
:~" ,'[>tOCES
1901
~,0627.
I,' ,
,',' .':" , ' ,
4;CIRC,l,lIT
GROUND
\'t1UST:'!Be;CO~MON
'
WmiplN:
MOQULATOR' . . ' ::
I , )
"
",' ,
5,
:RE~hsT~NC~ "~OHl'S;">CAPA~'!iT~~C~
,i.. \ ",., ;"
<I!"
,
'n.MIC~OFA~AO,S Ut:-l4E;S~~"
"
,
,
",1)'~!,:
I\" ::'
I:,"~',
OTH,ERWISf.
"INOICA:r.~":.',,,<
"
/,\
/"
,':(,'
' I '
\'
,o'
)
.
I,' ,"
, "l ,
'
'.'
'
' \
' :
.,'
I
"
',;'
/i,'.',
,/\, (' ,
'.', .'/
,'"
I
' \ ' I , '
"
\
)
It',
"
,'\
\
J
,.
!'
" , ;
.'
"
' , , ' : '
.. ',
' , ' : '
" , "
'l"'::!''1'(L\
, /
I '
'"
\'1:,
'"I~,.' ':'I:~tw/c'ir~,~i't\ il~l~s,tl'ateit ~b?\re
,Will
typically
meet
I '
2.,1 . .
CttcuitArlju,GtrrtP.llt;'h:'"
I
"\ .•.
:>: .;th~(~:~~~~l~g ~~~f~~~,a~te feat~~s:
. . : ' " .. " . ' ..
">',~~\l~~~~r:~~,:'~~~ft~e~~~:~~i~~t~n~:l~~~
,,<,':;)
"!, )
,:,,(~) rrhc"~«;Ji&hs(er cheraeteristlc is within
2(r,j:"or
' , ' '
~:F':,~igQal::f~eq~~~~cy of interest.
/
'.'
i
. '\ i ' . . '
"so ~t,/lh~~iir: ~'t ,1.S'OHz. Slncethe PIN Modl.d~tor:,,'
I.:
~~)iroadju~t~' apply de voltage ~o
the input
.and
,~!
:"atten;6ati~n'i
I
bias
I
curr~nt ' chararit~rbtic,
variJs
':'",,'
adjusit~e'alipropriate potentiometer. in
the input
"""', " , "','\vl'dely.::,:II,"
' " '\I,~!
' , " \ ; : /
' "
divider
as'
irJ,dlcated
for'
the "initi~l 'setup volt-
:,V
"
./,"
' \
,I,
"
I,'r,', ",
,
,,"'" '
I'
,
"ages'
(s6~'Fig",ure' 12A). ' .
,':(b), The,;, ban'~~id,t~" '~,f t,~e circu~t is
,limited' to. , "
:'
t
~~out'
/4
MH,~ '.<~odulating
signal, frequency).
I
' : (c
)':J'~~a1. ha~ti,~nic'disto~iionshould
be
gre~~~
'i
,:~~~n'
20
'~B dOW~1' :,~
.
,:1 \
\,
fl,
,
j
""1'1'"
, ,
j
'I"
,
.li ,":
.
','t
il':
\
\
,,(d) .
~~rp,,()p~r:,'drr.uit opera~ion" it:is nec~ssarY \':;
. i"to.'
have an
8~v,o~,t
signal on ,the base
()f
th~,input\
'
:,,~'~ansist?r',l8 ~?!~ts',p,OS~~i;ve re~ferenced:to g!~~fl,~r
'
'J
.',1,'.:'
" , j
. ,
"
I
1
I'
\\
",
:
I
\'

Advertisement

loading

This manual is also suitable for:

8732b8733b8734b8735b8731a8732a ... Show all