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HP 740B Operating And Service Manual page 92

Dc standard/differential voltmeter

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Section VII
Model 740B
2
IlooMV 1 3
[JU
0
~
0
~
0
IIOOOV I
0
10
4
IFUNCTION I
P/O SIHIR)
QlliJ
II
Hooovi
I
1
W
1
8J
IFUNCTIONI
IFUNCTIONI
I RANGE
I
S1R20
r--vu--l
r-:---J
~ SOIG.(:.,Fc».'.o:15'-------.....JV\I0IV-_--<~-=20S-II.(RO)~
~ ~E(R)
~()4--O-=II-+-===17<J~~
~
~3
~
0
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00~3=1
= S=T=D=-.I
--4---=1
=10=M=V=.; 1 3
" o
IIOOMV
1
0
[JU
0
MOMENTARY CONTACT
1
BETWEEN POSITIONS
~o
.--==-,----"IO~
~o
+--====I0"<l
IIOOOV 1 0
Functional and Component Location
Diagram (Sheet 3 of 4)
R9
IOV
27K
R~~~E
RIOtJ~
20
R6
900K
~9
MAIN LOOP
P/O
FEEDBACK
DIVIDER
1
I
R4
900K
R5
1000V
900K
R~~~E
R12b~
1
2K
I
\01
2
Figure 7-3.
IRANGEI
~SICIR)
o
o:MYJ
IRANGEI
~SIBIR)
o
CIMYJ
I
5
L - - - - - - - - - - - - - - - - - - - - - - i
16VMI
II
1
+-----1---+-----
16VMI
9
S:~!i'
!I(~
7
0 5
I
FUNCTION
I
SIH(F)
[]M]
MOMENTARY
CONTACT
BETWEEN
POSITIONS
ISTD
I
L---------------------------------=~30
I FUNCTION I
PIO
SII(F)
rnD
04
-o",--,
10
®
12
~
o
TO +IV REFERENCE
LOOP OUTPUT
9
S
10
5
I
STANDARD
I
16VMI
I
VERNIER
I
~
I
S9B 15
I STD I
S9R6
IK
+---"0
S9R7
IK
+--""'0
S9RS
lK..-_~1I0
S9R9
IK~
S9RI0
IK
14
SIR3
16K
I
XI04
~I
VOLTMETER S2E
SENSITIVITY
P/O A3
~~.==~~
~~J IN~l.TRO
,...-
OVERLOAD
22'
IOVERLOADI
W
~
D~iGE~~~R
051
Ip/oAI7I;~
GAIN
{ ,
~,
~
.....-T-PI-O-----'
I
:
Q~\:
C~~gK
0 TO -IOMV
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1
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TPII
I~~?.A~
,"t"1
D
I
92
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OTO+IV~
L...-.!.
t~~EL
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_ _
_1_----::~=TA=N:!--_?I_--_to--T-f"'~I__<>+==92=6:!---r-"il..,jI~I_.,--=1iZ£!./=7----,,--=2'1
1
OPEF~~~I~~AL I------------~=---------------------------_J
V
MPLIFIER
C5
'-.J
..,...
o-------l~
FIG 7-S
17 FIG 7-7
IRANGEI
I
V4
,
r
SIB(F)~
1
( t \ V 3
I
~g'~~~~¥:BERS
I
RANGEl
22
~
1
~\
1
~
VR!J
AND ABOVE
..-;--oSOIA(F)
L . . . . - - - - - - - - - - :
2 "O--0[JMY]
L -
Q~
---l ,-
-1
~
IIOMV
I
IQI
o
_'-.
BTl
\II
I
11.~4V
1
OIIOOMVI
I
-,11t-
1
DY::J
~J
0 =
P/oA11 _
~
~
Itooovi
~
S9RI
IK
2
59 R2
0--------=0
IK
4
S9R3~
IK
5
S9R4~
IK~
I2Qgj
S9~~
+---"0
S9R21
7
1.IIIK
XI0
4
DIVIDER
SS
FIG 7-14
IRANGE I
SIF(Rl
[==::::J
o
5
f----<>--
\S7R5
1111.11
" ' 0 TO +looOV MAIN LOOP FEEDBACK
XIO'
DIVIDER
57
FIG 7-14
\S6R5
1111.11
XI0
2
DIVIDER
56
FIG 7-14
f----<>--
\S.5R5
1112.22
I
VOL"P~~TER
I
S2B
SENSITIVITY
I
......
~.
5
XIO
DIVIDER
55
FIG 7-14
SIR9
2.2M
5
®
--+-
SIRB
2.2M.
SIRIO
S200
I
VOL
T~'nER I
S2A
SENSITIVIT~
I
...
~t
XI
DIVIDER
54
FIG 7-14
~==============REFERENCE DIVIDER===============::::!I
SEE FIG 7-5 FOR
INTERNAL ALIGNMENT
IT:l
o
';!7m
0
m
o
W
o
IT:l
o
ITl
o
[]]o
ITI
1
10
TO
:
S3E(F-IOl
II
A
I
I.1J
500H
'l'-.J
I
052
I
R2
562
B
~QI
.• \QJ
A
~DJ 4~IK
I W
I!J
-30V
~
I
I
140B-J-0729A SH I
~IT-
--~
A2TP7
~
FINE
TPI
'
+12VIREF
1
REF ADJ
.~+5.9V
(REF
TOd:?)
1
COARSE
r--->
~
• •
TO
d:? )
'(f
J.
I' y t
INTERNAL
I
REF ADJ
.,.
ALIGNMENT
..... A 13
a
PIO
A2
~J
R41
R42
S3RI
10PERATEI S3A(F)
OVEN
a
OVEN
k
21
f/-+-l-'l/v'v-~
50
6S
~~i,>-4"",S",91o-3--==.=:::::;,;()oo_0;E\
....
~~GN~~~~
:
R2 4g
1
S3R2
[IJI6
0
15
1
f
-.l
I
R39
I
1111.11
OW
12__
I
L _ _ _
-----.l
INPUT
GUARD
FROM INPUT
CABLE ASSY (AIS)
SEE FIG 7-4
7-8
01794-1

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