Tektronix 475A - Risetime (Dm44)

RISETIME (DM44)
Set controls as follows:
FUNCTION TIME
HORIZ DISPLAY A INTEN
B SOURCE STARTS AFTER DELAV
B TIME/DIV 3 or 4 positions more
cw than A TIME/DIV
A TIME To move the time-
measurement point
to the right of the
reference point
Set the A TIME/DIV switch to a setting that displays
several events. Set the VOLTS/DIV and VAR VOLTS/DIV
so the amplitude of the displav is exactly 5 divisions.
Vertically position the display so the bottom touches the
0% graticule line and the top touches the 100% graticule
line.
60
475A/DM44
Operators
Adjust the DELAY TIME POSITION control to move the
reference point to the 10% graticule line (see Fig. 32 Point
A). Adjust the A TIME control to move the time measure-
ment point to the 90% graticule line (see Fig. 32, Point B).
The Readout and Scale Factor Lamps indicate the
risetime.
INTENSIFIED ZONES
i
i
AMPLITUDE TT
|
HORIZONTAL | >
DISTANCE
(465/DM-0-11)2039-29
Fig. 32. Risetime.