National Instruments PXIe-5665, Calibration Manual, Page: 59 / 85

PXIe-5665 Calibration Procedure | © National Instruments | 59
5. Disable the RF source 1 and RF source 2 outputs.
Note
When disabled, the RF source 1 and RF source 2 output signals should be less
than -60 dBm.
6. Set the RF source 1 power to the
RF Source 1 Programmed Power
1 corresponding to one
of the following values:
•
Preamplifier disabled: -10 dBm
• Preamplifier enabled: -30 dBm
7. Set the RF source 2 power to the
RF Source 2 Programmed Power
2 corresponding to one
of the following values:
•
Preamplifier disabled: -10 dBm
• Preamplifier enabled: -30 dBm
8. Configure the PXIe-5665 Reference Level to one the following values:
•
Preamplifier disabled: -10 dBm
• Preamplifier enabled: -30 dBm
9. For each test frequency from Table 32 or Table 33, calculate the following four frequencies:
•
IMD Low Frequency
= Test Frequency - 1.05 MHz
•
P1 Frequency
= Test Fre 350 kHz
•
P2 Frequency
= Test Frequency - 350 kHz
•
IMD High Frequency
= Test Fre 1.05 MHz
1
The RF Source 1 Programmed Power
value was measured in the
Characterizing RF Source Power
(Combined) for Frequencies >700 MHz
equipment characterization procedure.
2 The
RF Source 2 Programmed Power
value was measured in the
Characterizing RF Source Power
(Combined) for Frequencies >700 MHz
equipment characterization procedure.
Table 32. PXIe-5665 3.6 GHz VSA TOI (Frequencies >700 MHz)
Verification Test Frequencies
Start Frequency Stop Frequency Step Size
800 MHz 3.3 GHz 500 MHz
3.59895 GHz — —