http://web.njit.edu/~ransom/Tektronix2235.html 9/9/2007 12:44 PM
horizontally(X-axis).
(16) GND Connector-Provides direct connection to the instrument chassis ground.
(17) SERIAL and Mod Slots-The SERIAL slot is imprinted with the instrument's serial
number. The Mod slot contains any option number that is installed in the instrument.
HORIZONTAL CONTROLS
(18) A and B SEC/DIV Switches-Used to select the sweep speeds for the A and B Sweep
generators in a 1-2-5 sequence. To obtain calibrated sweep speeds, the A and B
SEC/DIV Variable control must be in the calibrated detent (fully clockwise).
A SEC/DIV-The calibrated sweep speed is shown between the two black lines on the
clear plastic skirt. This switch also selects the delay time for delayed-sweep
operation when used in conjunction with the 8 DELAY TIME POSITION control.
B SEC/DIV-The B Sweep speed is set by pulling out the (DLY'D SWEEP PULL) knob and
rotating
it clockwise to a setting opposite the white line scribed on the knob. The B Sweep
circuit is used only for delayed-sweep operation.
(19) A and B SEC/DIV Variable Control -provides continuously variable, uncalibrated
A Sweep speeds to at least 2.5 times the calibrated setting. It extends the slowest
sweep speed to at least 1.25 s per division.
(20) X10 Magnifier Switch-To increase displayed sweep speed by a factor of 10, pull
out the A and B SEC/DIV Variable knob. The fastest sweep speed can be extended to 5
ns per division. Push in the A and B SEC/DIV Variable knob to regain the X1 sweep
speed.
(21)HORIZONTAL MODE Switch-This three-position switch determines the mode of
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