Tektronix 2221A - Appendix C: Performance Verification; Step 3: Check Variable Range; Step 4: Check Position Range; Step 5: Check Store Expansion Range

Appendix C: Performance Verification
NOTE
Pulses with fast rise and fall times have only a few sample points
and it may not be possible to place the cursors at exactly the same
voltage levels.
r. CHECK — The AT readout is between 3.990 ps and 4.010 ps.
Q Step 3: Check Variable Range
b. Select 0.5 ms time markers from the time-mark generator.
c. CHECK — Time markers are one division or less apart.
FH Step 4: Check Position Range
b. Select 10 ps time markers from the time-mark generator.
c. CHECK — Start of the sweep can be positioned to the right of the
center vertical graticule line by rotating the Horizontal POSITION
control fully clockwise.
d. CHECK — The 11th time marker can be positioned to the left of the
center vertical graticule line by rotating the Horizontal POSITION
controi fully counterclockwise.
e. Select 50 ps time markers from the time-mark generator.
f. Align the 3rd time marker with the center vertical graticule line using
the Horizontal POSITION control.
g. Set the X10 Magnifier knob to On (knob out).
h. CHECK — Magnified time marker can be positioned to the left of the
center vertical graticule line by rotating the Horizontal POSITION
control fully counterclockwise.
i. CHECK — Start of the sweep can be positioned to the right of the
center vertical graticule line by rotating the Horizontal POSITION
control fully clockwise.
n Step 5; Check Store Expansion Range
a. Set:
SEC/DIV
SEC/DIV Variable
STORE/NON-STORE
0.2 ms
Fully counterclockwise
NON-STORE (button
out)
a. Set;
SEC/DIV
10 ps
a. Set:
SEC/DIV
X I0 Magnifier
0.1 ms
Off (knob in)
I
2221A User Manual
A-41