SDS5000XSeries Digital Oscilloscope Service Manual
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5.11
To Verify Trigger Sensitivity
This test checks trigger sensitivity at the frequency of 10 MHz and also at
the bandwidth frequency.
In the test, the impedance of 9500B should be set to 50 Ω
.
Table 11
Trigger sensitivity data
Volts/Div
Frequency
Trigger Range
100 mV/div
10 MHz
9.9~10.1 MHz
100 mV/div
bandwidth
bandwidth±1%
Steps:
1.
Connect the selected channel of the oscilloscope to the 9500B, as
shown in
2.
Set the oscilloscope Volts/Div to 100mV/div, Sec/Divto 50ns/div,
coupling mode to AC.
3.
Set impedance of the 9500B to 50 Ω, frequency to 10 MHz, and
amplitude to 80 mV, and set the impedance of the oscilloscope
channels to
50 Ω.
4.
Set trigger slope of the oscilloscope to Positive.
5.
Press Trigger Level knob to set the level to the center of the
waveform.
6.
Adjust the trigger level within the waveform range to achieve a
stable trigger.
7.
Record the (hardware-measured) frequency which is on the top right