Waveforms - Zenith ABV341 Series Service Manual

• WAVEFORMS

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