Hameg Instruments HM 307 Bedienungsanleitung Seite 26

TIMEBASE AND TRIGGER
(Main Board; T -Board)
T "g. Signal
trp (from EY80ardi
0.55 V pp/cm
0.33u
C108
TRIG. CIRCUIT
6.89 R104
33k
33k
gn
C' 02 6.89
Trig. ext.
51k
.69
PS 1 02
100k
R 09
10k
rd
6BpL
390 R231
Hor.
RI 16
c 09
+5VX
PS103
I On
R 142
Clio
250V
In-p. ext.
CNICI
BNC
GOICT
PS002
6.79
CIRCUIT, TIMEBASE SWITCH, SWEEP AND X.AMPLIFIER,
+5VX
Automatic Sensor
2.
IN 4149
22k
10k
35V
0107
R 106
10k
22n
4 70
470k R103
R 130
4
Co para
40 v
clog
N7271
101
3
6
3V 74LS74
RI 05 •
221--1
Sweep Flip
AT Norm C107
Autony Without Sign. +5V
o'hermse •4 SV
102) Autom. Tng. Bithout
1k2
othermse
Base T 101 . Autom T r 'g 'v 'thout
Trig
Norma•
Tr•g Without
ZPD5,6
Nor Tr 19 With S.gnai
ZIOI
Level
TIMEBASE
DS 101
400 V
D 109
RI 19
RIS7
220k
R120
47u
35V
C134
-12V
T 101
BC239C
51
51k
R 124
to base
T 109
RI 21
220
Y-lienecnon
gn
voltage
S
to PS002
X. FINAL
Unblankinq Pulse
CRT.C.rcuit)
Switch
100k o,' p
R 113 C 105
1
k 22n
11
0107 D108
T 101
239C
IN4149
D 104
1 N4149
ov
IHOU
IN4149
06
0106
51 N414
c 113
R' 32 0105
10k
R 133
Flop Sweep Amplit.
10k
Dl T103
103 R 1
S.gnal •4.8V
1.11
•o.2V os 101
• 5 V (Hor
ov
Signa' to,8V
With Signal
S•qna•
CIRCUIT
4 3.5V 5.5V
0110
149
SWEEP AND X.AMPLIFIER
BC 239 c
ZPt)12
35V
C' 33
12k
+12VX
R 125
DS '02
R 23
24 v
14
220
Mams
0m
AMPLIFIER
Tjme/dvv,
o.sps
Ips
o
100k HOId Off o o
5ps
o o
o
20ps
o o
BC 237B
8135
509 s
C13
09 D12
O,2 ms
IC102
O,5ms
08
p 10
74LS74
Hold Off
R 36
Switch
20 m S
. ...I,SV
50 ms
. O.SV
o,ls
-3,5V
o,2s
51
R 137
2209
2k2
c 121
R 138
Sweep
phtude
HO
220
R222
35V
6R8
70 c 132
R 39 R 1 56
+24VX +24 V
COMPONENT
rd
SW Itch
TIMEBASE SWITCH UNIT
TB B
—
Discharg
SW itch
BSX
10k
R 150
20k
40.2k
R 152
22n
R 144
123
100k
F 153
200k
54
T 106
BC307B
BC 557
2.2B 402k
O
0
Constant
O O ur rent
Stage
122
O o
o o
.10.5...19
c 128
o o
100k
RI 49
R224 10k R 146 33k
ime Cal.
.24 V X
R 147 47k
10k
T Var iable
OSA
2
70
rovx S,.
*5VX
LOCATIONS TIMEBASE SWITCH
19
51
B
V
3
C