Tektronix 2335, Instruction Manual, Page: 64 / 104

Substituting these values in the vertical conversion factor
formula:
Vertical
Conversion
Factor
30 V
4 div x 5 V/div
1.5
Continuing, fo r the unknown signal the V O LT S /D IV
switch setting is 1 and the peak-to-peak amplitude spans
five vertical divisions. The arbitrary deflection factor is then
determined by substituting values in the formula:
reference signal (e.g., on assembly line test) may be easily
and accurately measured w ith the 2335. To accomplish
this, a reference signal o f known time duration is first set
to an exact number o f horizontal divisions by adjusting the
A SEC/DIV switch and the TIME (PULL) VAR control.
Unknown signals can then be compared w ith the reference
signal w ithout disturbing the setting o f the TIME (PULL)
VAR control. The procedure is as follows:
1. Set the time duration o f the reference signal to an
exact number o f horizontal divisions by adjusting the A
SEC/DIV switch and TIME (PULL) VA R control.
A rb itra ry
Deflection = 1.5 x 1 V/div = 1.5 V/div
Factor
2. Establish a horizontal conversion factor, using the
following formula (reference signal time duration must be
known):
The amplitude o f the unknown signal can then be deter­
mined by substituting values in the unknown signal ampli­
tude form ula:
Am plitude = 1.5 V/div x 5 div = 7.5 V
Horizontal
Conversion
Factor
reference signal time
duration (seconds)
horizontal
distance
(divisions)
A S E C /D iV
switch
setting
Time Comparison
in a similar manner to “ Amplitude Comparison",
repeated time comparisons between unknown signals and a
3. For the unknown signal, adjust the A SEC/DIV
switch to a setting that provides sufficient horizontal deflec­
tion to make an accurate measurement. Do not readjust the
TIME (PULL) VAR control.
2335 Operators
51