HP 120A - Page 59

+100V
GATE (-)
8.5 V (BROAD PATTERN
DUE TO RF)
+ 3 BOV
+ 380 V
2
l — i J GATE INVERTER
(SEE SWITCH DETAIL )
3
R24I
:. IOOK GA TE (+)
(SEE SWITCH DETAIL )
! S 101
/ S20
: : CIOI
.. C2O3
-150 V
0-4
R20I
-150 V
B
R246
(SEE HORIZ. AMPL. SCHEMATIC)
R2I2
+IOOV
-!50V
1
50 K
| TRIGGER LEVEL |
REF. DESIGNATORS
R233
14-150
STABILITY
|0
- 150 V
-I50V
-150 V
AC- 21 A PROBE
itOA -s a . , OIA
OS202 1
K
R2O9
IOOK
R229
33K
R224
27K
R22I
IOOK
R238
2.0M
1206
NE 2
SWEEP
TIME
R248
24K
R250
3900
C2I2
• OIHF
C209
2000
C2I6
.02UF
R23I
250K
C2I0
100
R235
24K
1208
NE2
1207
NE2
1203
NE2
R243
470
1204
NEE
HORIZ.
SENS.
R205
83K
R249
270K
R206
3.6K
R227
33K
R2I5
I5K
1201
NE2
R226
I8K
R225
680 K
R223
I.5K
C2H
100
SWEEP
LENGTH
R2I9
20K
1202
NEE
C2I3
820
R239
470
C2I5
.01 L1F
R240
27K
1205
NE 2
R242
820K
0201
1.0
C2I7
47
0
208
.05IUF
R237
IM
R228
I0K
R222
47K
R244
47K
unassigned :
C2I8 -220
R2I7
100
-Wr
C2O7
68
— IH
FROM
VERT AMP
R220
33K
(SEE SWITCH
DETAIL )
o-
CAL
TO
HORIZ.
AMP. R214
47K
VA-
V204A
'/ 2 I2AU7
0 UNBLANKING
LEVEL
V205A
‘ / 2 6U8
SAWTOOTH
INTEGRATOR
I (SEE SWITCH
DETAIL )
V203A
‘ / 2 I2AU7
R204
3.0K
C204
10
V204B
‘ / 2 I2AU7
INTEGRATOR
SWITCH
V202
6U8
START-STOP
TRIGGER
V203B
I2AU7
HOLD-OFF
CATHODE
FOLLOWER
V205B
*/ 2 6U8
SAWTOOTH
INTEGRATOR
C202 R202
.022LLF 100
R236 7^C2I4
isoK it ::
L20I
* 500plH
[ J JOI
| HORIZ
,8 SYN(
INPUT
COFYRIOKT 1W8 IY HEWLETT>PACKA*D COMPANY
TNi drowing li Intended for the operation
ond maintenance of Hewlett-Pockord equlp-
m»nj ond It not to bo vied otherwlte or
'•produced without written content of the
Hewlett.Pockord Company.
@ TRIGGER SENSITIVITY
R247
1 I SWEEP I I
I TIME |
Io
| SWEEP TIME | SWITCH TO |,5 MICROSECONDS / ChT]
ON MODEL I50A OSCILLOSCOPE.
CONDITIONS OF MEASUREMENT OF WAVEFORMS!
| VERT. SENSITIVITY | IN | CAL. |
|
SYNC | SWITCH IN | INT — |
+ 100 V
1
SENS.
R2I0
200K R2II
I20K
SWEEP
OUTPUT
+ 380V
—
/I \ ___
7 2
' / _L x ’
9 V20I
6AN8
trigger generator
B
R207
IOK
C205 C206
20 UF 20J1F
jr it
R2O8
I24K
j
C20I -
217
1201 -
208
J 201
L20I
R20I -
250
S20I -
202
V20I -
205