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Performance Tests
TAS 455 and TAS 465 Service Manual
4Ć23
Time Mark Generator
50 W Termination
Precision Cable
Figure 4Ć11:ăDual Delay Test Setup
3. Set the output of the time marker generator for 0.5 ms markers.
4. Press the AUTOSET button.
5. Set the sec/div scale to 500 ms.
6. Set the volts/div scale to 500 mV.
7. Position the time marker display to the upper half of the graticule and
align the first time marker to the second vertical graticule line.
8. Press the TRIGGER MENU button and then the MAIN/DELAY SELECT
button.
9. Set MODE to Runs After.
10. Set the delayed sec/div scale to 50 ms.
11. Press HORIZONTAL MENU.
12. Select TRCSEP and position the delayed time marker display to the
lower half of the graticule using the General Purpose Knob.
13. Select DELAY.
14. Using the General Purpose Knob, position the intensified zone on the
main sweep to the second time marker; then, slightly adjust the General
Purpose Knob until the delayed sweep time marker is at the graticule
center.
15. Press the UTILITY button and select CONFIG from the main menu.
16. Select MORE until you can select Dual Delay Enabled from the sub
menu.
17. Press the CURSOR button and set DTIME to On.
18. Using the General Purpose Knob, position the second intensified zone
on the main sweep to the third time marker; then, slightly adjust the
General Purpose Knob to superimpose the delayed sweep time markers
at the graticule center. Press the TOGGLE button to assign the General
Purpose Knob to the second intensified zone if necessary.
19. Check the Dual Delay Accuracy Reading for each time marker pair listed
in Table 4Ć6.