Tektronix 222 Operator's Manual page 146

Checking Performance -222
DSO
Operators
1. Check X I SECIDIV Accuracy
a. Connect the Time Mark Generator via a 5 0 4 termination and
BNC-to-male probe-tip adapter to CH
1
probe tip.
b. Set the Time Mark Generator to output
1
ms time markers.
c. Vertically position the baseline of the time-mark signal to the
center horizontal graticule line.
d. Horizontally position the left time marker with the first vertical
graticule line.
e. CHECK-that the leading edge of each time marker is aligned
to a vertical graticule line within
2%
( f
0.1
division).
f. Disconnect the test equipment from the oscilloscope.
REV MAR 1989