Appendix B: Performance Verification
B–10
TDS 340A, TDS 360 & TDS 380 User Manual
19. Disconnect the test hook up from the CH 2 input connector.
Time Base System Checks
This procedure checks those characteristics that relate to the Main and Delayed
time base system and are listed as checked under Warranted Characteristics in
the Specifications section.
Equipment Required: One time-marker generator (Item 9), one precision
coaxial cable, (Item 2) and one 50 W termination (Item 1).
Time Required: Approximately 5 minutes.
Prerequisites: See page B–5.
Procedure:
1. Connect, through a 50 W precision coaxial cable and a 50 W termination, the
time-mark output of a time-marker generator to CH 1, as shown in Figure
B–5. Set the output of the generator for 10 ms markers.
Time-Mark
Generator
Output
50 W Termination
Figure B–5: Hookup for sample rate check
2. Press SAVE/RECALL SETUP ! Recall Factory Setup ! OK Confirm
Factory Init.
3. Set the vertical SCALE to 500 mV/div.
4. Press SET LEVEL TO 50%; use the vertical POSITION knob to center
the test signal on screen.
5. Set the horizontal SCALE to 1 ms/div.
6. Press HORIZONTAL MENU ! Trigger Position ! Set to 10%.
Check Long-Term Sample
Rate and Delay Time
Accuracy
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