HP 3320A Operating And Service Manual page 161

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TO XA9B PIN B
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XAI2B PIN I
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DC REFERENCE
VOLTAGE
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10VdCt!r
5.9Vdc
R26
56K
t!t2.6VdC
-6.0Vdc'-..
CR3
6.8V
-ISV
R21
2.2K
RI7
2.2K
R2
20K
C2
.01
+SV
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8
Q
IC7
SEE
NOTE
•
MONOSTABLE
MUl.Tl- 14
VIBRATOR
Q
8
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8
COUNT/LOAD (STROBE)
COUNTER
TN
+5V
SEE
NOTE
3
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L . - - - - - - - - _ _
SEE NOTES I ANO 2
FROM XA21A PIN
XA22A
FROM XA21A PIN
XA22A
F ROM
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PI N 4
FROM
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PIN C
on
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1 19 MOTHER
BO"A;D~-~6-SI-9--
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73320B
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I 03320-66540 (3320B OPTION 001) I
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+15V R31
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REFERENCE •
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SEE;TES I
ANO~2
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II . . . .
ADJUST
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XA21A I
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5.6
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FROM XA22A PIN D : L - L - - k
CLOCK
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RIS 05 :
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FROM
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PIN
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-15V
1
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13 :
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4 VIBRATOR
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80
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FROM
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FROM XA21A PiN B I
XA22A
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6
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H 200: (
7 10 COUNTER
IC4
H 400: ( F
(----"-I
FROM XA21A PIN 2
J~H
800'
H
XA22A
FROM XA21A PIN A
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XA22A", / I
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COPYRIGHT 1971 BY HEWLETT-PACKARD COMPANY
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Figure 7-29. Amplitude Reference A 11. 33208.
7-59/7-60