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Performance Tests
TAS 455 and TAS 465 Service Manual
4Ć21
TableĂ4Ć4:ăTime Base and Cursor Accuracies (Mag Off) (Cont.)
Time Cursor
Readout Accuracy
TimeĆmark to
Graticule Accuracy
Sec/Div Scale
(Mag Off)
2nd and 10th
Time Marks
Over Center
8 Divisions
Time Mark
Setting
200 ns 0.2 ms ±0.16 division 1.57 ms to 1.63 ms
500 ns 0.5 ms ±0.16 division 3.92 ms to 4.08 ms
1 ms 1 ms ±0.16 division 7.84 ms to 8.16 ms
2 ms 2 ms ±0.16 division 15.7 ms to 16.3 ms
5 ms 5 ms ±0.16 division 39.2 ms to 40.8 ms
10 ms 10 ms ±0.16 division 78.4 ms to 81.6 ms
20 ms 20 ms ±0.16 division 157 msto163ms
50 ms 50 ms ±0.16 division 392 msto408ms
100 ms 0.1 ms ±0.16 division 784 msto816ms
200 ms 0.2 ms ±0.16 division 1.57 ms to 1.63 ms
500 ms 0.5 ms ±0.16 division 3.92 ms to 4.08 ms
1ms 1ms ±0.16 division 7.84 ms to 8.16 ms
2ms 2ms ±0.16 division 15.7 ms to 16.3 ms
5ms 5ms ±0.16 division 39.2 ms to 40.8 ms
13. Set DTIME to Off.
14. Set the time mark generator to 20 ns.
15. Set the main sec/div scale to 20 ns.
16. Press the HORIZONTAL MENU button and set DELAY to On and MAIN
to Off.
17. Set the delayed sec/div scale to 20 ns.
18. Set the delay time to 3 ns using the General Purpose Knob.
19. Position the edge of the second time mark to the second vertical
graticule line.
20. Check that the Time Mark to Graticule Accuracy over the center eight
divisions are within the limits shown for each sec/div scale listed in
Table 4Ć4 (disregard the Time Cursor Readout Accuracy column).
21. Set MAIN to On.
22. Set the main sec/div scale to 20 ns.
23. Set MAIN to Off.