Tektronix DG2020A, Руководство пользователя

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Appendix B: Performance Verification
BĆ30
DG2020A, P3410, & P3420 User Manual
Characteristics Confirmation Procedure
1. Load the TP7DELAY.PDA test pattern file from the performance check
disk.
2. Press the following keys in the order shown. In the present state the CH8
through CH11 delay settings will all be 0.0 ns.
Menu button Bottom button Popup menu Side button
Front panel
button
SETUP Level/Delay
Move the cursor to CH08 with the general purpose knob.
Delay
3. Press the START/STOP button on the front panel so that the button’s LED
indicator lights.
4. Observe the two clock pulses on the oscilloscope, and read off the CH8
delay value referenced to CH0 with the timing measured between points with
voltages of 50 % of the peak value. Confirm that the values measured with
the oscilloscope for the delay settings in Table B-8 fall within the delay span
ranges in the table below.
Table BĆ8: Delayprecision
Settings Delayspan range
0.0 ns -0.80 ns to 0.80 ns
2.0 ns 1.14 ns to 2.86 ns
5.0 ns 4.05 ns to 5.95 ns
10.0 ns 8.90 ns to 11.10 ns
20.0 ns 18.60 ns to 21.40 ns
5. Move the pin header cable connected to the P3420 CH8 to channels CH9
through CH11 in turn, and repeat step 3 to confirm the delay values.