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PXIe-5665 Calibration Procedure
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© National Instruments
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45
5.
Configure the PXIe-5665 according to the following fixed property settings. These settings
remain unchanged during the test.
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Acquisition Type: Spectrum
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Averaging Mode: RMS Averaging
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Number of Averages: 10
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Ref Clock Source: PXI_Clk
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Ref Clock Rate: 10 MHz
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Preamp Enabled: Disabled
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Reference Level: -10 dBm
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FFT Window Type: Flat Top
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Resolution Bandwidth Type: Bin Width
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Channel Coupling: AC Coupled
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Device Instantaneous Bandwidth: 50 MHz (25 MHz for the PXIe-5665 with the
25 MHz bandwidth)
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(PXIe-5665 14 GHz VSA)
Preselector Enabled: Disabled
6.
Set the RF source 2 mode to Single Frequency.
7.
Connect the frequency reference source to the spectrum analyzer reference frequency input.
8.
Set the spectrum analyzer reference source to External.
Note
If the RF source you use for this test has consistent, known offset spurs, these
spurs can be characterized independently of the LO-related spurs. You can ignore
these offset frequencies to save time during testing.
9.
Set the PXIe-5665 center frequency according to the first row in either Table 22 or
Table 23.
Table 22.
PXIe-5665 3.6 GHz VSA Test Frequencies
Start Frequency
Stop Frequency
Step Size
100 MHz
3.5 GHz
200 MHz
3.6 GHz
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Table 23.
PXIe-5665 14 GHz VSA Test Frequencies
Start Frequency
Stop Frequency
Step Size
100 MHz
13.9 GHz
200 MHz
14 GHz
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