National Instruments PXIe-5665, Руководство по началу работы, Страница: 24 / 33

The MAX self-test performs a basic verification of hardware resources.
Related Information
Troubleshooting on page 27
If an issue persists after you complete a troubleshooting procedure, contact NI technical
support or visit
ni.com/support
.
Interconnecting the PXIe-5665 Modules on page 8
Refer to the NI RF Vector Signal Analyzers Help for more information about renaming
devices.
Self-Calibration
It is important to perform a self-calibration after first connecting your system because of
cabling and mismatch effects and some degree of residual error, which result from module
interconnections. You can determine and reduce these undesired effects through self-
calibration, which adjusts the PXIe-5665 with respect to an onboard high-precision calibration
tone. Additionally, you should periodically run a self-calibration to adjust for performance
drifts that occur with product aging.
The PXIe-5665 modules are independently calibrated at the factory; however, you should
perform a self-calibration in any of the following situations:
•
After first installing and interconnecting your PXIe-5665 system
• When there is a physical change to any of the system components, such as replacement of
modules
• When there is a change to the system cabling
• When the system is in an environment where external variables, such as temperature, can
affect measurements
You should also perform a self-calibration if your device has exceeded any of the following
temperature or time limits since the last device self-calibration:
•
IF flatness: ±5 °C and/or 7 days
• Gain reference: ±5 °C and/or 7 days
• LO self-calibration: ±10 °C and/or 30 days
• Digitizer self-calibration: ±5 °C and/or 90 days
• Preselector alignment (PXIe-5605 only): ±5 °C and/or 7 days
Performing a Device Self-Calibration Using the
NI-RFSA SFP
NI recommends you run the self-calibration from the NI-RFSA SFP. You can also run a self-
calibration programmatically using the NI-RFSA API.
1. Launch the NI-RFSA SFP by navigating to
Start » All Programs » National
Instruments » NI-RFSA » NI-RFSA Soft Front Panel .
2. Click
Device/System
»
Calibration
»
Self Calibration
.
3. Select the self-calibration steps you want to perform from the Self-Calibration dialog
box.
PXIe-5665 Getting Started Guide | © National Instruments | 23