http://web.njit.edu/~ransom/Tektronix2235.html 9/9/2007 12:44 PM
(5) PROBE ADJUST Connector-Provides an approximately 0.5-V, negative-going, square-wave voltage (at
approximately 1 kHz) that permits an operator to compensate voltage probes and to check operation of
the oscilloscope vertical system. It is not intended for verifying the accuracy of the vertical gain or time-
base circuitry.
(6) BEAM FIND Switch-When held in, compresses the display to within the graticule area and provides a
visible viewing intensity to aid in locating off-screen displays.
(7) TRACE ROTATION Control -Screwdriver adjustment Press in for ON; press again for OFF. Used to
align the CRT trace with the horizontal graticule lines.
(8) A and B INTENSITY Controls-Determine the brightness of the A and the B Sweep traces.
VERTICAL CONTROLS
(9) CH 1 VOLTS/DIV and CH 2 VOLTS/DIV Switches-Used to select the vertical
deflection factor in a 1-2-5 sequence. To obtain a calibrated deflection factor,the
VOLTS/DIV
variable control must be in the calibrated (CAL) detent (fully clockwise).'
1X-Indicates the deflection factor selected when using either a
1X probe or coaxial cable.
1OX PROBE-indicates the deflection factor selected when using a 1OX probe.
(10) VOLTS/DIV Variable Controls-When rotated counterclockwise out of their
calibrated detent positions,these controls provide continuously variable,
uncalibrated deflection factors between the calibrated settings of the VOLTS/DIV
switches.
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