Appendix B: Performance Vcrii%at,ion
7.
x.
Y.
Adjust the horizontal POSITION to move the trigger T to the right and on
to the screen. Continue to position the trigger T to align it to the cenler
vertical gaticulc lint.
Press the main menu button Time Rase; then press the side menu button
Delayed Only.
Set the hodzontal SCALE of the D (delayed) time base to 1 ms/div. Then
use chc General Purpose knob to set delay time to 10 ms.
‘10. Set the horizontal SCALE of the D (dclaycd) time base to 500 ns/div.
NOTE When you change the SECDIV in step 10, the delay time readout
changes to IO.00001 or 9.99999. This is normal and has rzza effect on the
verijication
11. Check that the rising edge of the marker crosses the center horizontal
graticule line at a point within ti.0 divisions of the gratlcule cerner.
NOTE One division ofdisplacementfrom the center graticule corresponds to
a SO ppm time base errox
12. Disconnect the test hookup.
Delta Time Measurement
Accuracy
Della time measurcmcnt accuracy is verified by successful completion of the
previous procedure.
Trigger System Checks
Check Edge Trigger
Sensitivity, DC Coupled
These procedures check those characteristics that relate to the trigger system and
are listed as checked under Warranted Characteristics in the Spccificacnlions
section
Equipment Required: One leveled sine wave gcncrator (Item 7 or 8), two
precision 50 SZ coaxial cables (Item 2), one 50 Q tcrmlnation (Item I), and one
BNC T connector (Item 4).
Time Required: Approximately 10 minutes.
Prerequisites: See page B-5.
TDS 340, TDS 360 & ‘IDS 380 User Manual
B-11
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