Tektronix 475 - Low-Voltage Power Supply

TM 11-6625-2735-14-1
CH 2 OR Y
Input connector for Channel 2
deflection signals or Y-axis
deflection in the X-Y mode of
operation.
GAIN (2 and 5 mV)
Screwdriver adjustments to set
the gain of the Vertical Preamp.
VOLTS/DIV
VAR
UNCAL
Input coupling
(AC-GND-DC)
Selects vertical deflection fac-
tor in a 1-2-5 sequence (VAR
control must be in the
calibrated detent for the in-
dicated deflection factor).
Provides continuously variable
uncalibrated deflection factors
between the calibrated settings
of the VOLTS/DIV switch.
Light indicates that the VAR
control is not in the calibrated
position.
Selects the method of coupling
signal to the input of the Vertical
Amplifier.
AC: Signal is capacitively
coupled
to the Vertical
Amplifier. DC component of
signal
is blocked. Low-
frequency limit (lower –3 dB
point) is about 10 Hertz.
GND: Input signal is removed
and the input circuit is ground-
ed. Does not ground the input
signal.
DC: All components of the in-
put signal are passed to the
Vertical Amplifier.
100 OR 20 MHz BW/
Multi-purpose switch that limits
TRIG VIEW
vertical bandwidth or displays
an external triggering signal.
Full bandwidth of 200 MHz is
provided in the switch position
obtained when the TRIG VIEW
is pushed in, then released. The
full bandwidth position serves
as the reference for the follow-
ing settings.
2-4
100 (MHz): When TRIG VIEW
button is pulled to the first de-
tent (100 indicated on yellow
band of TRIG VIEW knob) the
upper bandwidth of the com-
plete
Vertical Deflection
System
is limited to ap-
proximately 100 MHz.
20 (MHz): When TRIG VIEW
button is pulled to the second
detent (100 and 20 indicated on
yellow band of TRIG VIEW
knob) the upper bandwidth of
the complete Vertical Deflec-
tion System is limited to ap-
proximately 20 MHz.
TRIG VIEW: When the TRIG
VIEW button is pushed and
held, the output of the Vertical
Preamplifier is interrupted, and
the trigger signal selected by
the setting of A TRIGGER
SOURCE switch is displayed on
the crt.
When the TRIG VIEW button is
pushed and held, the crt display
available is explained in each of
the following settings of the A
TRIGGER SOURCE switch.
NOTE
The signals displayed are affecfed by the coupling
characteristics of the A TRIGGER COUPLING
switch positions (see A Trigger Coupling informa-
tion in this section).
The A TRIGGER LEVEL control affects the trigger-
ing and the vertical positioning when using a TRIG
VIEW display.
NORM: Any signal that is dis-
played in full bandwidth posi-
tion is viewed with an increase
in signal amplitude.
CH 1: Any signal that is dis-
played in CH 1 of VERT MODE,
in full bandwidth position, is
viewed with an increase in
signal amplitude.