Tektronix 2247A

Performance Check Procedure
Set SEC/DIV to 20 ns.
Set tlme-mark generator for 20 ns time markers.
Set:
Horizontal MODE B
B INTEN For a viewable
display
Repeat the CHECK procedure for all the B SEC/DIV settings.
A and B Magnifled Timing Accuracy and Linearity
Set tlme-mark generator for 5 ns time markers.
Set:
Horlzontal MODE A
A SEC/DIV 20 ns
Horizontal MODE B
B SEC/DIV 20 ns
X10 MAG On (for
2 ns/div sweep
speed)
CH 1 VOLTS/DIV 0.5 V (use
0.2 V for the
5 ns time
markers If
necessary)
Set the Horizontal POSITION control to 12 o'clock and then align the
rising edge of the nearest time marker to the second vertical graticule
line (center the display vertically).
NOTE
For the fastest sweep speeds, where the time marker peaks are
rounded and not well defined, greater resolution can be achieved
by vertically centering the display and using the points where the
rising edges of the time markers cross the center horizontal
graticule line as a reference.
CHECK—that the rising edge of the fourth displayed time marker
crosses the center horizontal graticule line at between 8.27 divisions
and 8.73 divisions from the left-most graticule line.
7-40 2247A Operators
oa
C3