Tektronix 7B10 Instruction Manual page 13

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Operating Instructions—
7B 10
Operators
TRIGGERING
LEVEL Control—
Selects
a
point on
the trigger signal
where
triggering occurs.
SLOPE
Switch
Permits
sweep
to
be
triggered
on
negative or positive-going portions of the
trigger signal.
READY
Indicator—
Illuminates
when sweep
circuit
is
armed (SINGLE
SWP
Mode).
TRIG'D
Indicator— Illuminates
when
the display
is
triggered.
MODE
Pushbuttons—
Selects the operating
mode
of
the
triggering
circuit.
COUPLING
Pushbuttons—
Selects the
method
of coupling the
trigger signal to triggering
circuit.
SOURCE
Pushbuttons—
Selects source
of
the
trigger signal.
SWEEP
POSITION
Control
—
Provides horizontal positioning.
FINE Control—
Provides
precise horizontal positioning.
MAG
Pushbutton
—
Selects magnified
X10
or unmagnified sweep.
HOLD
OFF
Control—
Permits hold
off period to
bo
varied to improve
trigger
stability
on
repetitive complex
waveforms.
TIME/DIV
Selector—
Selects the
sweep
rate of the
sweep
generator.
VARIABLE
Control
and
CAL
Switch—
Selects calibrated or uncalibrated sweep
rates. Uncalibrated
sweep
rates can
be continuously reduced
to at least the
sweep
rate of the next slower
position.
SWP CAL
Adjustment— Compensates
for basic timing changes duo
to the differences
in sensitivity of
mainframes.
EXTERNAL TRIGGER
INPUT
EXT TRIG
Button—
Selects input impedance.
EXT TRIG
IN
Connector—
Connector (BNC
type) provides input
for external trigger
signals.
2317-03
Fig.
2-1
(cont.).
Front-panel
controls, connectors, and
indicators.