HP 654A Operating And Service Manual page 67

CI4
A
8
D
RI3
R14
CIO
RIT
UNDER
WAFER C
E
RI5
RANGE SWITCH
S2
hp
Part
No. 00653-61901
H
A2 SCHEMATIC
COMPONENT LOCATIONS
R El C
CR L DSV R
a CR R
1 B13 £14 D13 114 B17 C22 16
- - - 31 E20
2 D13 C16 JIS H14 C18 17 D16
32 - - -
3 .
D13 E16 116 J14 F18 18 F16 33 C22
4 J13 C17 J15 F16 19 F17 34 B25
5 J14 DI8 J16 C17 20 B20 35 C24
6 H14 E18 - - - C15 21 B18 36 C24
7 F115 E20 - - - D17 22 D18 37 D24
8 J16 C23 B17 E17 23 E18 38 C23
9 F13 C25 HIS F19 24 F18 C26 39 D24
10 £14 C26 E18 FI9 25 F14 40 326
11 DIS
E19
E20 26 F19 D15 41 - - -
12
F15 £20 B26
27 E19 42
13 1114 B19 28 F18 43 D26
14 EIS
- - - 29 --- 44
15
B16
30 E19 45
2 3 A I 6 I
7
I
8 9
S2RI 52R 3
I2M I.24M
P/0 S2
I RANGE
620(F)
•
•
•
CIA/ tiC113
14-6I7PF 14-617PF
FREQUENCY
A
P/O S2
I RANGE
• vi:,*;
Ar
dc
I4-617PF
S2D(R)
P/O S2
[ RANGE
szo(q)
S2R2
*
150K
EICI
ElE
3100
X100
S2R4
I24K
S2R5
I2.4K
I S
i
2
F
C 16
*
S2CI
*
p
e
j1.5PF
Fag< 0 CEI3
10KHz
ADJUST
MOM
S2C2
2-10PF
O
o
X100 X 1K
OEM
IS2C3 *
..-s
82PF
0
—
X1OK
411.
S2R6 5
.
2 R7
I.24K: 124
X 100K
IMHz
ADJUST
MUM
S2C4
2-10PF
X 00K
10MHz
ADJUST
MOM
S2C6
2-10PF
S2C5 *
82PF
I X 100K I
raa
S2C7 *
10PF
12 13
Fvo42
14 15
OSCILLATOR AND OUTPUT ( 00654
-
66502)
18 19 I
20 I
21 I
FREQUENCY ADJUSTABLE OSCILLATOR
935 iII Pos AC FEEDBACK
• •
NEO AC
AND OC
FEEDBACK
RI
2210
FEEDBACK
LEVEL ADJ
mIZI•
S2 R17
1K 5
-1111-
••
• • s • • • • 4- -411- • • -44- 4- le • .0
0 P/0 S2
RANGE
S2B(R)
S2R10
*
1.8M
o P/0 S2
RANGE]
S213(F)
XIO X100 KIKI
10KHz
ADJUST
MOB
O
X 10K
S2R9
24.3M
ElE
S2Ri
2.6114
52C17 *
I.5PF
X100
S2RI2
261K
S
2
C
8
/
2
-10PF
52C13 *
1.5 PF
X1K
S2RI3
26.1K
1MHz
ADJUST
M g.
O
IX OOKI
S2C10/
2-10PF
_S2C9 5
"5PF
e—
O
S2
X1OK
10MHz
ADJUST
O
•-
52C12
2-10PFr
_szcii*
T5PF
• • •
S2RI4e S2RI5
2.6IKP 274
01)000K
!RANGE
CD
()
0 A
A
(F) ( R) ( F) ( R) ( F) ( R) ( F) ( R) ( F) ( R)
rim
_S2C15 *
10PF
P/0 S2
0 RANGE [
o
SEC(F) Ella
O
O
ElE
Elm
NOTES
R3
100
Ree
1910?
DISTORTION
ADJ
MOM
DC LEVELS WERE OBSERVED UNDER THE FOLLOWING CONDI-
TIONS:
A. 654A.
RANGE - X1OK
DIAL - 1
IMPEDANCE - 75 UNEIAL
OUTPUT LEVEL -. 10 dB/n
AMPLITUDE- SET FOR 0 ON METER.
11 ALL VOLTAGES . 1-10%.
C. VOLTAGES WERE TAKEN WITH AN - HP- MODEL 3440A
DIGITAL VOLTMETER HAVING A 3443A PLUG-IN. HOWEVER,
ANY DC VOLTMETER WITH APPROXIMATELY 10 MEGOHMS
INPUT IMPEDANCE WILL YIELD ABOUT THE SAME RESULTS.
10MHz ADJ
MO.
2-10PF
T PI
40mV AC
RIO
1K
R9*
23.7K
-26V
Q I
RII
D
f1.3.21/
02
ei.IV
RI?
©
026
20
.4.3v
R22
10
RI2 eR18 RI9 R24
2.21K 91 1.2 K 2.7
_C9
RI3 0.1
20K
CR2
i
r.
7
•
e
R7
?2.7
•
C4 C3
22 .— 2900
C5
e
R5 CR3 C2
100
•
CRI
7
[ R P A I ° NG S E 2
S2E(F)
R8
10K
90
3
310
500
12
o
o
Elm
o
E1313
CUM
LEVEL FEEDBACK
R28
12.1 K
4 +5.5V OC
K
5V TO
6V P- P
+31V
TP2
-.25V TO -. 45* OC
R20
10
OV OC
4 >>
22 23 24 25 26
BUFFER AMPLIFIER
R33 R38
I.69K 499 0V
20
20
+31 V
Re Q
-.6V
R35 R36
100 100
2 7 9K
-26.1
4- AK- 4 ye.
R39
2K
+31 ,/
Z12 K
•22.9*
OV
DC AND AC FEEDBACK
4
LEVEL CONTROL FROM
AMPLITUDE CONTROL INTEGRATOR
TO S2CI4 IN X10 POSITION
OF THE RANGE SWITCH
P/
0
43
+31 V
CRI2
6.49V
R4 9 0
4.9
.23.5V
010
-.7v
( 4 D CR24
-26V
12.1 V
"c2
METER AND LEVELING (00654-66503)
—
I
COUNTER EMITTER
FOLLOWER
+31 V
R4
301
C3
CRI
20V
COPYRIGHT 1968 BY HEWLETT- PACKARD COMPANY
27 28
+31 V —4> e -= 4-31 V
-26V->>-:-"
1
= 26v
• F e-- j*
TO BALANCED
AMPLIFIER
r- C OUNTER ouTPu - r
L
A
D
E
H
1
P/0 Figure 7-2. Oscillator and Buffer Amplifier
S2, A2, Ai.
7-5