Zenith ABV341 Series, Service Manual

Page: 43 / 190

3-48 3-49
• WAVEFORMS
* IC301 Waveform
IC301 Pins 20, 21, 22
100mV/10msec DIV
VV/EE
20 Main DE Emphasis Filter
21 Main DE Emphasis out
22 Clamp in
IC301 Pin 32
200mV/10msec DIV
EE
(VIDEO IN) IC301 Pin 41
100mV/0.2msec DIV
REC/PB
(2fsc) IC301 Pin 25
1.0V/20msec DIV
VV/EE
(C-SYNC OUT)
IC301 Pin 49
100mV/0.2msec DIV
PB/REC
(3.58MHz X-TAL IN) IC301 Pin 14
100mV/5msec DIV
PB
(PB RF out) IC301 Pin 73
500mV/2msec DIV
SP REC
(REC RF) IC301 Pin 26
500mV/10msec DIV
VV/EE
(VIDEO OUT)
IC301 Pin 66
500mV/2msec DIV
EP REC
(REC RF)
* IC501 Waveform
Tek Stop : 10.0KS/s 280 Acqs
M5.00ms Ch1 Ch1 3.04 V 1.00 V
T
T
1
Tek Stop : 250KS/s 299 Acqs
M 200 µ s Ch1 Ch1 3.04 V 1.00 V
T
T
1
Tek Stop : 10.0KS/s
18 Acqs
M 5.00ms Ch1 Ch1 3.04 V
Trigger Position: 12%
1.00 V
T
1
T
Tek Stop : 10.0KS/s 27 Acqs
M5.00ms Ch1 Ch1 3.04 V 1.00 V
T
T
1
Tek Stop : 10.0KS/s 35 Acqs
M5.00ms Ch1 Ch1 3.04 V 1.00 V
T
T
1
Tek Stop : 50.0KS/s 120 Acqs
M1.00ms Ch1 Ch1 3.04 V 1.00 V
T
T
1
T
Tek Stop : 5.00KS/s 2 Acqs
M 10.00ms Ch1 Ch1 340V
Trigger Level: 340mv
500mV
T
1
IC501 Pin 18
REC/PB IC501 Pin 13
QUE/REV IC501 Pin 13
QUE/REV IC501 Pin 95
REC
IC501 Pin 87
REC/PB IC501 Pin 90
REC/PB
(DPG/DFG)
(DPG)
(DFG)
IC501 Pin 97
PB
(CTL OUT) IC501 Pin 94
REC