Tektronix 422 - Page 44

Circuit Description-Type 422 AC-DC
SW110
SW195
Internal
calibrator
signal from
Calibrator
and Regu
lators circuit
Channel 2
signal to
Vertical
Switching
and Output
Amplifier
circuit
SW150
Fig. 3-3. Channel 2 Input Amplifier detailed block diagram.
Channel 1
signal from
Channel 1
Input
Amplifier
circuit
Channel 2
signal from
Channel 2
Input
Amplifier
circuit
Alternate
trace
sync pulse
from _
Sweep
Generator
circuit
CH 1 & 2
Trigger
Pickoff
Network
A l s \ ^
ernate
Trace Sw-
Switching
itching *
Multivibrator
------ V
Amplifier
Q265, Q275
Q 2 6 4 ^ ^
- - „
Composite
trigger signal
to Sweep
Trigger
circuit
Delay Line
(^ 1 5 0 ns)
Chopped
blanking
to CRT
Circuit
Vertical
deflection
signal to
vertical
deflection
plates
Fig. 3-4. Vertical Switching and Output Amplifier detailed block diagram.
3-6