PXIe-5673E Calibration Procedure
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© National Instruments
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5
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Ensure that the PXI/PXI Express chassis fan speed is set to HIGH, that the fan filters, if
present, are clean, and that the empty slots contain filler panels. For more information, refer
to the
Maintain Forced-Air Cooling Note to Users
document available at
ni.com/
manuals
.
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Keep relative humidity between 10% and 90%, noncondensing.
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Maintain an ambient temperature of 23 °C ± 5 °C.
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Allow a warm-up time of at least 30 minutes after the chassis is powered on. The warm-up
time ensures that the PXIe-5611 is at a stable operating temperature.
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Perform a self-calibration on the PXIe-5450/5451 Waveform Generator.
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In each verification procedure, insert a delay between configuring all devices and acquiring
the measurement. This delay may need to be adjusted depending on the instruments used
but should always be at least 1,000 ms for the first iteration, 1,000 ms when the power level
changes, and 100 ms for each other iteration.
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Zero and calibrate the power meter sensors before each test.
Initial Setup
Refer to the
PXIe-5673E Getting Started Guide
for information about how to install the software
and hardware and how to configure the device in MAX.
Test System Characterization
Use the following procedures to characterize the test system response. Use the results of these
procedures in the
section of this document.
Characterizing the Power Splitter
Several procedures in this document require using a splitter that has been characterized to
remove error from future measurements. Complete the following steps to characterize a splitter
using a PXIe-5650/5651/5652, power meter, and spectrum analyzer, as shown in Figure 1.
1.
Disconnect the PXIe-5611 LO IN front panel connector from the PXIe-5650/5651/5652
RF OUT front panel connector.
2.
Connect the power meter power sensor to the PXIe-5650/5651/5652 RF OUT front panel
connector.
3.
Generate a tone with the PXIe-5650/5651/5652 with the following niRFSG property
settings:
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Frequency (Hz): 85 MHz
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Power Level (dBm): -10 dBm
4.
Use the power meter to measure the output power.
