Tektronix 2335, Instruction Manual, Page: 73 / 104

12. Calculate rise time using the same form ula listed in
the "Tim e D uration" measurement procedure.
EXAMPLE: With the A SEC/DIV switch set to 1 jus,
the first B DELAY TIME POSITION dial setting (Point
A) is 2.50 and the second B D ELAY TIM E POSITION
dial setting (Point B} is 7.50.
Substituting the given values in the time difference
form ula:
Rise Time - ( 7 .5 0 - 2.50) (1
ms
) = 5
ms
Time Difference Between Repetitive Pulses
1. Preset instrument controls and obtain a Normal
Sweep Display.
2. A pply the signal to either vertical-channel input
connector and set the VERTICAL MODE switch to display
the channel used.
3. Set the appropriate VO LTS/DIV switch to produce a
display o f approximately 5 divisions in amplitude and
vertically center the display.
4. Set the A SEC/DIV switch to display the measure­
ment points of interest w ithin the graticule area.
5. Select the A INTEN HORIZ MODE and set the
B SEC/DIV switch to the fastest sweep speed that provides
a usable (visible) intensified zone.
6. Adjust the B D ELAY TIME POSITION control to
move the intensified zone to the first pulse (see Figure 26A,
Point A).
7. Select the B HORIZ MODE. Observe the B trace and
adjust the B D ELAY TIME POSITION control to move the
rising portion o f the pulse to a convenient vertical reference
line (see Figure 26B).
8. Record the B D ELAY TIME POSITION control dial
setting.
9. Adjust the B D ELAY TIME POSITION control
clockwise until the second pulse is positioned to the same
vertical reference line (see Figure 26B).
@
2335 Operators
59