Tektronix 434 User Manual

Operating Instructions—434
COUPLING (cont)
if LF REJ and HF REJ are in
out position.
MODE
LF REJ: Rejects DC and attenuates
signals below approximately 30
kilohertz. Accepts signals
between about 30 kilohertz and
25 megahertz.
HF REJ: Attenuates signals above
approximately 50 kilohertz.
Accepts signals between DC and
approximately 50 kilohertz.
LEVEL
Selects the amplitude point on the
trigger signal at which the sweep is
triggered.
SLOPE
Selects slope of trigger signal which
starts the sweep.
+: Sweep can be triggered from
positive-going portion of trigger
signal.
—: Sweep can be triggered from
negative-going portion of trigger
signal.
RESET
EXT TRIG
(Rear panel)
Input connector fo r external trigger
signals.
Sweep
POSITION
Controls horizontal position of the
display.
READY Light
TIM E /D IV
Selects the sweep rate of the sweep
generator (Variable control must be
in the CAL position fo r indicated
sweep rate). Extreme
counterclockwise position of switch
selects External Horizontal mode of
operation.
EXT HORIZ
(Rear panel)
MAG
Push-to-turn switch (concentric
w ith T IM E /D IV switch) provides
sweep magnification up to a
maximum of 50 times. Extends
fastest sweep rate to 0.02 /is/’div.
Storage
STORE
(Upper and lower)
Variable
(Not labeled)
Provides uncalibrated sweep rates
between the calibrated settings
selected by the TIM E /D IV switch.
The sweep rate in each T IM E /D IV
switch position can be reduced to
at least the sweep rate of the next
adjacent position to provide
continuously variable sweep rates.
ENHANCE
(Upper and lower)
ERASE
(Upper and lower)
Determines the operating mode for
the sweep generator.
AUTO: In the AUTO position
(button in) of this pushbutton
switch, the sweep is initiated by
the applied trigger signal. In the
absence of an adequate trigger
signal, the sweep free runs and
provides a bright reference trace.
NORM: In the NORM position
(button in) of this pushbutton
switch, the sweep is initiated by
the applied trigger signal. In the
absence of an adequate trigger
signal, there is no trace.
SINGLE SWEEP: When both the
AUTO and NORM switches are
pressed in the sweep operates in
the Single Sweep mode. A fter a
sweep is displayed, further
sweeps cannot be presented until
the RESET button is pressed.
When the RESET button is pressed
(in the SINGLE SWEEP mode), a
single display w ill be presented
(with correct triggering). A fter the
sweep is completed, the RESET
button must be pressed again
before another sweep can be
displayed.
Indicates sweep has been reset and
a single display w ill be presented
upon receipt of an adequate trigger
signal.
Input connector for external
horizontal signal when TIM E /D IV
switch is set to EXT HORIZ.
In the STORE position (button in),
the CRT operates in the storage
mode. In the Non-Store position
(button out), the CRT operates in
the conventional mode.
In the ENHANCE position (button
in) the w riting rate fo r single-sweep
displays is increased (using the EN
HANCE LEVEL control).
A momentary contact switch that,
when pushed, erases a stored dis
play from the CRT.
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Tektronix 434 Specifications

General

Brand	Tektronix
Model	434
Category	Test Equipment
Language	English