Performance Verification
Check Residual Spurious
Response
This check veri
fies that the oscilloscope m eets the specification for residual
spurious response. This check does not require an input signal.
1. Terminate the
oscilloscope RF input in 50 Ω and make sure that no input
signal is applied.
2. Set the reso
lution bandwidth (RBW) as follows: Push the front-panel BW
button. Push the side-bezel RBW Mode button to select Manual. Push the
side-bezel RBW button. Set the resolution bandwidth to 50 kHz.
3. Turn auto level on as follows:
a. Push the fr
ont-panel Ampl button.
b. Push the side-bezel Auto Level button to turn the auto level feature on.
The instr
ument will automatically set the reference level correctly.
4. Check in the range of 50 kHz to 3 GHz as follows:
a. Push the front-panel Freq/Span button. Push the side-bezel Start button.
Set the start frequency to 50 kHz. Push the side-bezel Stop button. Set the
stop fr
equency to 3 GHz.
b. Observe any spurs that are greater than - 80 dBm and note them in the
test r
ecord.
5. Check in the range of 2.75 GHz to 4.5 GHz as follows:
a. Change the oscilloscope start frequency to 2.75 GHz and the stop
frequency to 4.5 GHz.
b. Observe any spurs that are greater than - 78 dBm and note them in the
test record.
6. Check in the range of 3.5 GHz to 6.0 GHz as follows:
a. Change the oscilloscope start frequency to 3.5 GHz and the stop frequency
to 6.0 GHz.
b. Observe any spurs that are greater than - 78 dBm and note them in the
test record.
104 MDO4000 Series Specifications and Performance Verification
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