SDS5000XSeries Digital Oscilloscope Service Manual
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10 mV/div
100 mV, 50 mV,0,- 50 mV,-100 mV
±1.5%
±0.0032
5 mV/div
50 mV,25 mV,0,-25 mV,-50 mV
±1.5%
±0.0026
2 mV/div
20 mV, 10 mV,0,-10 mV, -20 mV
±1.5%
±0.00224
1 mV/div
10 mV, 5 mV,0,-5 mV, -10 mV
±1.5%
±0.00224
5.3
To Verify Time Base Accuracy
This test verifies the time base accuracy of the oscilloscope. In the test,
the impedance of both the 9500B and the oscilloscope should be set to 1
MΩ.
Time Base Accuracy: Frequency Error < 10 Hz
Steps:
1.
Connect the selected channel of the oscilloscope to the 9500B.
2.
Set the oscilloscope Volts/Divto 100 mV/div.
3.
Set the oscilloscope Sec/Div to 50ms/div.
4.
Set the Memory Depth to 12.5Mpts.
5.
Set waveform of the 9500B to sine, amplitude to 600 mV, and
frequency to the value (10MHz).
6.
Check if the trigger (hardware-measured) frequency which is on the
top right of the screen is in the range of 999910~1000010.
