TB 9-6625-1200-24
Oscilloscope calibrator
Test instrument
Test instrument
MARKER
TIME/DIV
Err display
output
switch settings
(%)
3.0
1
ms/div
1
ms/div
s/div
3.0
0.5
500
ns/div
s/div
s/div
3.0
1
1
s/div
s/div
3.0
2
2
s/div
s/div
3.0
5
5
s/div
s/div
3.0
10
10
s/div
s/div
3.0
20
20
s/div
s/div
3.0
50
50
s/div
3.0
0.1
ms/div
100
s/div
3.0
0.2
ms/div
200
s/div
3.0
0.5
ms/div
500
3.0
2
ms/div
2
ms/div
3.0
5
ms/div
5
ms/div
3.0
10
ms/div
10
ms/div
3.0
20
ms/div
20
ms/div
3.0
50
ms/div
50
ms/div
3.0
0.1
s/div
100
ms/div
3.0
.2
s/div
200
ms/div
3.0
.5
s/div
500
ms/div
(4) Set TIME/DIV switch to .5 SEC and pullout X10 MAG switch. Set oscilloscope
calibrator MARKER output to 50 ns.
(5) Repeat technique of (1) and (2) above. If oscilloscope calibrator Err displayed
does not indicate within 5 percent, perform b (4) below.
(6) Turn horizontal POSITION control until center portion of magnified sweep has
marker aligned behind 2d vertical graticule line. If 8th marker from 2d vertical line is not
aligned behind 10th vertical graticule line within 2.5 minor divisions, perform b (5) below.
(7) Set oscilloscope calibrator to standby.
b. Adjustments
(1) Adjust R512 (fig. 2) for best compromise of TIME/DIV switch positions from 1
mSEC through 20 SEC (R).
(2) Adjust C440A (fig. 2) for best compromise of TIME/DIV switch positions from 10
SEC through 1 SEC (R).
(3) Adjust C537 (fig. 2) for .5 SEC position of TIME/DIV switch (R).
NOTE
SEC through 1
SEC
If C537 was adjusted, recheck 10
TIME/DIV switch positions.
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