Tektronix T922 User Manual

inverts the
ull current
river stage
isolate the
trol 84306
vertically
65 provide
ige excur-
ct through
d U4134D
s in the
gain of the
~cailtrated
attings
by
i 84152 is
14162, and
Switch
np gain
ction)
1X
5X
5X
1X
5X
_5X_
1X
.5X
5X
1X
.5X
5X
lifier stage
associated
is fed back
> of
04322
n inverting
s
of 04322
~ull points)
Q4346that
and 84344
ine losses .
DELAY LINE
The delay line, DI-4339, provides approximately 200 ns delay
in the vertical signal . This allows the sweep generator
circuit time
to initiate a sweep before the vertical
signal reaches the crt
vertical deflection plates .
TRIGGER PICKOFF
A sample of the vertical voltage
signal from the emitters of
U4134A and U4134D is applied to
04176 and 04174, where it is
IV . 2
converted to a current
signal . This current signal is applied to the
trigger input amplifier (see diagram 5) . When the SOURCEswitch
is set to INT,
approximately -4 volts from the trigger input
amplifier appears at the 04176 collector circuit, reverse biasing
CR4267 . When the source switch is set to LINE, EXT, EXT=10, or
X-Y, the internal trigger signal is disconnectedfrom the
trigger
input amplifier, permitting
CR4367
to
conduct and set the
collector of 04176 at about -3
volts
.
This maintains conduction
of 04176, providing a
constant load to prevent distortion of the
main vertical signal .

Tektronix T922 Specifications

General

Brand	Tektronix
Model	T922
Category	Test Equipment
Language	English