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Performance Tests
Performance Verification
4Ć22
24. Press the MAG button, turning magnification on.
25. Set the time mark generator for 5 ns markers.
26. Set the volts/div scale to 200 mV.
27. Check that the timing accuracies at the beginning, middle, and end of
sweep over the center eight divisions are within the limits shown for
each of the sec/div scales given in Table 4Ć5. Exclude the first and last
five divisions of the magnified sweep for accuracy measurements.
TableĂ4Ć5:ăTime Base Accuracy (Mag On)
Sec/Div Scale
(Mag On)
Time Marker
Setting
Time Mark to Graticule
Over Center 8 Divisions
2ns 5ns
1
±0.24 division
2
5ns 5ns
1
±0.24 division
10 ns 10 ns ±0.24 division
100 ns 0.1 ms ±0.24 division
100 ms 0.1 ms ±0.24 division
1
Change the volts/div scale as necessary to maintain vertical amplitude.
2
At this setting, two cycles of the signal are displayed for every five horizontal divisions.
28. Set MAIN to On and DELAY to Off.
29. Set the sec/div scale to 2 ns.
30. Set the time mark generator for 5 ns markers.
31. Check that the timing accuracies at the beginning, middle, and end of
sweep over the center eight divisions are within the limits shown for
each Sec/Div Scale given in Table 4Ć5. Exclude the first and last five
divisions of the magnified sweep for accuracy measurements.
32. Press the MAG button, turning magnification off.
Check Dual Delay Accuracy
Equipment Required: One time marker generator (item 9), one precision
coaxial cable (item 5), and one 50 W termination (item 3).
1. Display channel 1, turning all others off.
2. Connect the output of the time marker generator to the CH 1 input as
shown in Figure 4Ć11.