National Instruments NI PXIe-5673E, Процедура калибровки

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PXIe-5673E Calibration Procedure | © National Instruments | 21
• Attenuation: 5 dB
• Preamplifier: On
6. Repeat steps 4 through 5 for the following LO frequency ranges in 250 MHz increments,
including endpoints:
•
PXIe-5650: 85 MHz to 1.3 GHz
• PXIe-5651: 85 MHz to 3.3 GHz
• PXIe-5652: 85 MHz to 6.6 GHz
Store the resulting measurements.
7. Compare the measured values to the corresponding limits in Table 10.
8. Repeat steps 4 through 7 for the remaining output power values listed in Table 10.
If the results are within the selected test limit, the device has passed this portion of the
verification.
Verifying RF Harmonics
Complete the following steps to verify the harmonic performance of an PXIe-5673E module
using a spectrum analyzer.
1.
Connect the PXIe-5611 RF OUT front panel connector to the spectrum analyzer RF INPUT
front panel connector through the SMA(m)-to-SMA(m) cable.
2. Connect the PXIe-5650/5651/5652 REF IN/OUT front panel connector to any rubidium
frequency reference rear panel BNC connector through the BNC(m)-to-SMA(m) cable.
3. Connect any available rubidium frequency reference rear panel BNC connector to the
spectrum analyzer REF IN rear panel connector through the BNC(m)-to-BNC(m) cable.
4. Generate a signal with the following niRFSG property settings:
•
Frequency (Hz): 100 MHz
• Power Level (dBm): 0 dBm
• Generation Mode: CW
• Reference Clock Source: RefIn
Table 10. Noise Floor Upper Test Limits
Output
Power
(dBm)
PXIe-5650/5651/5652
PXIe-5651/
5652 PXIe-5652
LO Frequencies
85 MHz to
250 MHz
LO Frequencies
>
250 MHz to
1.3 GHz
LO Frequencies
>
1.3 GHz to
3.3 GHz
LO Frequencies
>
3.3 GHz to
6.6 GHz
+10 -133 dBm/Hz -134 dBm/Hz -134 dBm/Hz -134 dBm/Hz
0 -140 dBm/Hz -141 dBm/Hz -141 dBm/Hz -141 dBm/Hz
-10 -145 dBm/Hz -145 dBm/Hz -145 dBm/Hz -145 dBm/Hz
-30 -152 dBm/Hz -152 dBm/Hz -152 dBm/Hz -152 dBm/Hz