SDS5000XSeries Digital Oscilloscope Service Manual
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Steps:
1.
Set the oscilloscope Sec/Div to 1ms/div.
2.
Set the oscilloscope Volts/Divto 500uV/div.
3.
Press theMeasure button on the front panel of the oscilloscope to
display Stdev and Peak-Peak measurement.
4.
Calculate SNR (SNR =
20 ∗ log
10
8∗vdiv
2∗√2∗stdev
), pkpk/stdev.
5.
Check if the SNR and pkpk/stdev are in the limited range shown in
Table 5.
6.
Check the other analog channels in the same way as steps 1 to 5.
7.
Set the oscilloscope Volts/Div to the others in the table above, and
repeat the steps 3 to 5.
5.9
To Verify Bandwidth
This test checks the bandwidth of all analog channels. In the test, the
impedance of 9500B should be set to be the same as analog channels,
50
Ω
, and 1M
Ω.The bandwidth should be verified at
each coarse
Volts/DIV, except for 1mV/div and 2mv/div.
Steps:
1.
Connect theselected channel of the oscilloscope to the 9500B via the
active head, as shown in
2.
Set the oscilloscope Volts/Div to 5mV/div, the Sec/Div to 500us/div,
impedance to 50 Ω.
