Tektronix 453 User Manual

(A)
(8)
Fig. 5-36. Typical CRT display showing correct one-microsecond
timing, (8) location of C530A and C740A (behind swing-.out side
panel).
e. Set the HORIZ DISPLAY switch to DELAYED SWEEP (8).
f. CHECK-CRT display for one marker each division,
-+-3%, between the
first- and ninth-division vertical lines
(see Fig. 5-36A).
g. ADJUST-C740A (see Fig. 5-368) for one marker each
division.
53. Check/ Adiust High-Speed Linearity
·a. Change the following control settings:
CH l VOLTS/DIV
A and 8 TIME/DIV
HORIZ DISPLAY
20mV
.l µs
A
0
b. Set the time-mark generator for 10-nanosecond markers.
c. Position the display horizontally so the sweep starts
at the left edge of the graticule.
d. Set the MAG switch to X 10.
e. CHECK-CRT display for optimum linearity over the
center eight divisions of the graticule
(see Fig. 5-37 A).
©
Performance Check/Calibration-Type 453/R453
I
(A)
Fig. 5-37. (A) Typical CRT display showing correct high speed
linearity, (8) location of C882 and C892 (8 Sweep circuit board).
f. ADJUST-C882 and C892 (see Fig. 5-378) for optimum
linearity over the center eight divisions of the graticule (at-.
tempt to keep
C882 and C892 nearly equal in capacitance
by adjusting each capacitor about the same amount).
54. Check A Sweep Timing Accuracy
a. Change the following control settings:
CH l VOLTS/DIV
MAG
.2
OFF
b. CHECK-Using the A TIME/DIV switch and time-mark
generator settings given
in Table 5-5, check A sweep timing
within 0.24 division, over the middle eight divisions
of the
display
(within 3%).
CAUTION
To prevent possible burning of the CRT phosphor
at slow sweep rates, position the baseline of the
marker display below the viewing area.
5-35

Tektronix 453 Specifications

General

Brand	Tektronix
Model	453
Category	Test Equipment
Language	English