National Instruments PXIe-5665, Руководство по калибровке

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38 | ni.com | PXIe-5665 Calibration Procedure
13. Compare the
PXIe-5665 Average Noise (dBm/Hz)
to the verification test limits in Table 18,
Table 19, or Table 20 as appropriate.
Table 18. Average Noise Verification Test Limits (Preamplifier Disabled, PXIe-5665
14 GHz VSA Preselector Disabled)
Frequency
As-Found Limit
(dBm/Hz)
As-Left Limit
*
(dBm/Hz)
>10 MHz to 100 MHz -149 -151
>100 MHz to 300 MHz -152 -154
>300 MHz to 1.7 GHz -151 -153
>1.7 GHz to 2.8 GHz -149 -151
>2.8 GHz to 3.6 GHz -148 -150
>3.6 GHz to 7.5 GHz † -148 -150
>7.5 GHz to 8.5 GHz † -146 -147
>8.5 GHz to 12 GHz † -147 -148
>12 GHz to 14 GHz † -145 -146
*
Refer to the
As-Found and As-Left Limits
section of this document for more information
about as-left limits.
† Frequencies >3.6 GHz apply only to the PXIe-5665 14 GHz VSA.
Table 19. Average Noise Verification Test Limits (Preamplifier Enabled)
Frequency
As-Found Limit
(dBm/Hz)
As-Left Limit
*
(dBm/Hz)
>10 MHz to 100 MHz -161 -163
>100 MHz to 300 MHz -162 -165
>300 MHz to 1.7 GHz -162 -164
>1.7 GHz to 2.8 GHz -161 -163
>2.8 GHz to 3.6 GHz -160 -163
*
Refer to the
As-Found and As-Left Limits
section of this document for more information
about as-left limits.