Table of Contents
Advertisement
46
Checking and adjusting
!
4. Time base sweep times
- Set SK.2 to position ".02 ms/div.".
Apply a square wave voltage to UU2, with a frequency such that a com-
plete period is traced on each division of the graticule. The picture
•
height must be 8 divisions.
- Now the value of the frequency of the square wave voltage must lie
between 37.5 and 62.5 kc/s. If required, correct the sweep time by
selecting another value for R533.
- Check all positions of SK2 (see table below).
[
Position SK2
Frequency square wave voltage
.05 ms/div.
15,000-25,000 c/s
.1 ms/div.
7,500-12,500 c/s
.2 ms/div.
3,750- 6,250 c/s
.5 ms/div.
1,500- 2,500 c/s
1
ms/div.
750-
1,250 c/s
L
2
ms/div.
375-
625 c/s
5
ms/div.
150-
250 c/s
10 ms/div.
75-
125 c/s
20 ms/div.
37.5-
62.5 c/s
50 ms/div.
15-
25 c/s
i
i
i
i
i
i
i
i
i
Advertisement
Table of Contents
