Tektronix 5441 Instruction Manual page 19

Operating lnformation-544i/R5441
CONTROLSANDCONNECTORS
(See Fig 2-1)
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STORE Pushbutton-A push-push button that
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READOUT INTENS Control-Controls brightness
selects storage operation of the crt. Button out of the readout portion of the crt display. In the fully
position selects normal operation without storage. counterclockwise position, the readout system is
inoperative.
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WRITING SPEED Control-Controls the writing
speed and brightness of the stored displays.
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BEAM FINDER Pushbutton-Brings beam on-
screen; limits display to area inside graticule and
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VARIABLE PERSIST Control-Controls the
intensifies beam.
display only when the instrument is operating in the
storage mode. If the SAVE pushbutton is in its out
(97
INTENSITY Control-Controls display brightness.
position, the control operates as a persistence
control to determine the retention of the stored
display. (fully counterclockwise is maximum
retention). With the SAVE pushbutton pushed in,
the control operates as a save-time control to
extend the retention time longer than is available
with the normal storage mode. The fully clockwise
position (maximum retention) does not allow
viewing the stored display.
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POWER Switch-Turns instrument power on or
off.
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CALIBRATOR Loop-Provides positive-going
accurate 400 mV and 4 mA square-wave at a
frequency of twice the line frequency for calibration
and compensation.
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GRAT ILLUM Control-Controls graticule
illumination.
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FOCUS Control-Provides adjustment to obtain a
well-defined display.
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SAVE Pushbutton-A push-push button that.
when pushed, prevents accidental erasure or
damage to the stored information. The pushed
position also allows the stored information to be
retained for long periods of time.
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ERASE Pushbutton-Momentary pushbutton that
initiates erasure of the displayed information stored
on the crt screen.
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EXT INTENSITY INPUT Connector-Permits
application of Z-axis signals to the crt (dc coupled).
Positive-going signal increases intensity.
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Trace Rotation Adjustment-Adjusts trace
rotation of beam.
REV MAY 1982