Check Sample Rate And Delay Time Accuracy - Tektronix MSO70000 Series Technical Reference

Performance Tests (MSO/DPO5000 Series)

Check Sample Rate and Delay Time Accuracy

4–40
13. Repeat the tests at all bandwidth settings as follows:
a. Push the front-panel oscilloscope Vertical Menu button.
b. Set the Termination to 1M Ω.
c. Select the next Bandwidth at which to test.
d. Starting at step 5, repeat the procedure for each bandwidth setting in the
test record.
14. Press the Menu Off button.
This test checks the sample rate and delay time accuracy (time base).
1. Connect the output of a time mark generator to the oscilloscope channel 1 input
using a 50 Ω cable, as shown in the following illustration.
WARNING.
The generator is capable of providing dangerous voltages. Be sure to
set the generator to off or 0 volts before connecting, disconnecting, and/or moving
the test hookup during the performance of this procedure.
2. Set the time mark generator period to 80 ms. Use a time mark waveform
with a fast rising edge.
3. Push the front-panel Default Setup button.
4. Set the impedance to 50 Ω as follows:
a. Push the front-panel oscilloscope Vertical Menu button.
b. Set the Termination to 50 Ω.
5. If it is adjustable, set the time mark amplitude to approximately 1 V
6. Set the Vertical Scale to 500 mV.
7. Set the Horizontal Scale to 20 ms/div.
MSO70000/C, DSA70000B/C, DPO7000B/C, DPO7000, MSO5000, DPO5000 Series
.
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