Tektronix 2212 User Manual page 217

Performance Tests
Procedure Steps
Step
1.
Check Non Store Timing Accuracy
a. Connect 50 ns time markers from the time-mark gen-
erator via a 50
Q
BNC coaxial cable and a 50
Q
termina-
tion to the CH 1 OR X input connector.
b. Adjust the Trigger LEVEL control for a stable. trig-
gered display.
c. Use the Horizontal POSITION control to align the
second time marker with the second vertical graticule
line.
d. CHECK - Timing accuracy is within 3 % (0.24 divi-
sion at the tenth vertical graticule line), and the linearity
is within 5% (0.10 division over any two of the center
eight divisions).
NOTE
For checking the timing accuracy of the SEC/DIV switch
setting from 50 ms to 0.5 s, watch the time marker tips only
at the second and tenth vertical graticule lines while adjust-
ing the Horizontal POSITION control to line up the time
markers.
e. Repeat parts b through d for the remaining SEC/DIV
and time mark generator setting combinations as shown
in Table C-3.
NOTE
In X50 magnification in all "2" decade switch settings, the
associated time marker settings give only five markers per
ten divisions instead of ten with the "1 " and "5" decade
switch settings. When checking the "2" ranges, position the
time markers on the second and ninth vertical graticule
lines.
2212 User Manual
C-15