Tektronix 453 - Check B Sweep Length; Check a Sweep Length

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IA)
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181
Fig. 5-32. Typical CRT display showing correct magnifier register.
IAI MAG switch to XlO, 181 MAG switch set to OFF, !Cl location
of
Mag Register adjustment (8 Sweep circuit board).
d. CHECK-CRT display for one marker each division
between the
first- and ninth-division vertical lines (see Fig.
5-33A).
e. ADJUST-B Sweep Cal adjustment, R741 (see Fig. 5-
338).
f. INTERACTION-Check steps 51 and 56.
©
Performance Check/Calibration-Type 453/R453
IA)
Fig. 5-33. IAI Typical CRT display showing correct 8 Sweep cali-
bration, (81 location of the 8 Sweep Cal adjustment of (8 Sweep
circuit board).
47. Check B Sweep Length
a. Set the time-mark generator for 1- and 0.1-millisecond
markers.
b. Move the eleventh large marker to the center vertical
line with the horizontal POSITION control (see Fig. 5-34).
c. CHECK-B Sweep length must be between 10.5 and
11.5 divisions, as shown by 0.5 to 1.5 divisions of display to
the right of the center vertical
line (see Fig. 5-34). Large
markers indicate divisions and small markers indicate
0.1
division.
48. Check A Sweep Length
a. Set the HORIZ DISPLAY switch to A.
b. Set the A TIME/ DIV switch to 1 ms.
c. Move the eleventh marker to the center vertical line
with the horizontal POSITION control (see Fig. 5-34).
d. CHECK-A Sweep length must be between 10.5 and
11.5 divisions as shown by 0.5 and 1.5 divisions of display to
the right of the center vertical
line.
5-33