Tektronix 3B5, Instruction Manual

Page: 118 / 187

Calibration — Type 3B5
Fig. 6-12. Typical CRT display showing delayed sweep magnifier jitter.
(A) DELAY dial near 1.00, (B) DELAY dial near 9.00.
d. ADJUST — 1 μ s Cal adjustment, C 1 68 (see Fig. 6-1 4B),
for one marker each division,
e. INTERACTION — Check steps 15 —20.
15. Adjust 1 0-Microsecond Timing
a. Set the time-mark generator for 10-microsecond markers.
b. Set the MANUAL TIME/DIV switch to 10 μ s.
c. CHECK —CRT display for one marker each division
between the first and ninth vertical graticule lines (see Fig.
6-15A).
d. ADJUST — 10 μ s Cal adjustment, C315 (see Fig. 6-15B),
for one marker each division.
(A)
Fig. 6-13. (A) Typical CRT display showing correct one-second timing, (B) Location of 1 s Cal adjustment (Time-Base Board).
6-14