Tektronix T922 User Manual

Fig
.
2-2 . Rear panel controls and connectors .
Bottom of Cabinet-T921/T922 only (see Fig . 2-4)
@
120 V/240 V-Screwdriver actuated
switch selects
either 120 V or 240
V nominal power input voltage .
WARNING
To avoid electric
shock and equipment damage, do
not attempt to replace the infernal fuse or change
the
settings of the
power input range selector switch or
HI1LO switch . This mustbe done by qualified service
personnel only .
@
HI/LO-Screwdriver actuated switch selects either
high or low nominal
power-input-voltage regulating
range : LO selects 100 V or 220 V and HI selects
120 V or 240 V .
REV . B APR 1977
Operating Instructions-T921/T922/T922R
@
CH 1 DC BAL-Screwdriver adjustment
. When
properly adjusted,
prevents trace shift when
switching between
adjacent positions of the CH 1
VOLTS/DIV
switch .
CH 2 DC BAL-Screwdriver
adjustment . When
properly adjusted,
prevents trace shift when
switching between
adjacent positions of the CH 2
VOLTS/DIV switch .
FrontPanel (Fig . 2-5)
B . VERTICAL AMPLIFIER
O
VOLTS/DIV-Selects the vertical
deflection factor in
a 1-2-5 sequence
(VAR control must be in detent
position
to obtain the indicated deflection factors) .
Read the correct deflection factor for a 1X probe
from the 1X position and a 10X probe
from the 10X
position .
O
VAR-Provides continuously variable
uncalibrated
deflection factors between the
calibrated steps of
the VOLTS/DIV switches .
Extends the maximum
deflection factor to 25
V/div in the 10 V position .
Detent
position provides calibrated
VOLTS/DIV
deflection factors .
Input Coupling-Selects
the method of coupling
the
input
signal to the vertical input signal
amplifier .
AC :
Signals are coupled
capacitively . Any do
signal component is blocked .
Low frequencies
are attenuated (3 dB
down at about 1 Hz using a
10X probe) . Ac
coupling causes tilting of square
wavesbelow
about 1 kHz .
GND :
Grounds the input of the vertical
amplifier
to provide a ground reference
display . Connects
the input signal to
ground through the input
coupling capacitor
and a 1 Mil resistor to allow
the input coupling
capacitor to be precharged
by
the input signal .
DC : All components
of the input signal are
passed to
the vertical amplifier .
Channel 1 or Y Input-Connector
for applying an
external signal to the vertical
deflection system .
Provides the Y input in the
X-Y mode when CH 1
vertical mode button
is in .
O
Channel 2 Input-Connector for
applying an exter-
nal signal to the vertical deflection
system .
2-3

Tektronix T922 Specifications

General

Brand	Tektronix
Model	T922
Category	Test Equipment
Language	English