PXIe-5665 Calibration Procedure
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© National Instruments
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14. Commit the PXIe-5665 settings to hardware.
15. Enable the RF source 2 output and wait 250 ms, or wait 100 ms if the output is already
enabled. This wait time allows the PXIe-5665 and RF source 2 amplitudes to settle.
Note
Settling times are a characteristic of the RF source device. Refer to the
section of this document for a list of NI-recommended source devices and
device specifications. If you use an RF source device with different device
specifications, your settling times may differ from those listed in this procedure.
16. Read the power spectrum from the PXIe-5665.
Table 50.
Gain Compression Verification Test Settings
(Preamplifier Enabled)
Device
Setting
Frequency
Range
Limit
Value (dBm)
PXIe-5665
3.6 GHz VSA
RF Source 1
Programmed
Power
801 MHz to
1.701 GHz
As-Found
-15
As-Left
*
-13
>1.701 GHz to
3.601 GHz
As-Found
-18
As-Left
*
-16
RF Source 2
Programmed
Power
800 MHz to
3.600 GHz
Both
-54
PXIe-5665
Reference
Level
800 MHz to
3.600 GHz
Both
-30
PXIe-5665
14 GHz VSA
RF Source 1
Programmed
Power
801 MHz to
1.701 GHz
As-Found
-15
As-Left
*
-13
>1.701 GHz to
14.001 GHz
As-Found
-18
As-Left
*
-16
RF Source 2
Programmed
Power
800 MHz to
14.00 GHz
Both
-54
PXIe-5665
Reference
Level
80 MHz to
14.00 GHz
Both
-30
*
Refer to the
section of this document for more information
about as-left limits.