National Instruments mmWave Manuale utente
USER GUIDE
mmWave OTA Validation Test
Reference Architecture
The mmWave OTA Validation Test Reference Architecture integrates mmWave signal
generation and analysis instrumentation, an anechoic chamber, a positioner, and positioner
control, providing the ability to measure the complete radiated field of the DUT in all
transmitting directions.
This manual contains hardware and software information, including step-by-step procedures
and basic information about how to begin using the mmWave OTA Validation Anechoic
Chamber and instrumentation with the mmWave OTA Validation Test Software.
Notice The protection provided by this equipment may be impaired if it is used in
a manner not described in the documentation.
Contents
Hardware Overview.................................................................................................................. 2
Software Overview................................................................................................................... 2
Hardware Components..............................................................................................................4
mmWave OTA Validation Anechoic Chamber Exterior................................................... 4
mmWave OTA Validation Anechoic Chamber Interior.................................................... 8
Getting Started.......................................................................................................................... 8
What You Need to Get Started..........................................................................................9
Operating the Chamber................................................................................................... 10
Verifying Hardware Connections....................................................................................11
Performing System Calibration.......................................................................................18
Getting Started with Step-by-Step Position Sweeping................................................... 22
Getting Started With Autonomous Position Sweeping................................................... 23
Software Reference................................................................................................................. 25
Soft Front Panels.............................................................................................................25
mmWave OTA Test Visualizer........................................................................................27
OTA Measurement Interface...........................................................................................33
Antenna Plugin................................................................................................................33
Where to Go Next................................................................................................................... 34
Hardware Overview
The mmWave OTA Validation Test Reference Architecture comprises the following hardware:
• mmWave OTA Validation Anechoic Chamber
• mmWave OTA Validation Accessories Kit
• Instrumentation
– PXIe-5831 Vector Signal Transceiver—IF and mmWave instrument configuration
with two mmRH-5582 mmWave Radio Heads (direct TRX ports only)
– PXIe-6361 Multifunction I/O Module
– PXIe-1092 or PXIe-1095 PXI Chassis
Note This manual contains only detailed reference information for using the
mmWave OTA Validation Anechoic Chamber with the instrumentation. Refer to the
documentation for the individual instruments for basic information about
installation, configuration, and operation of each instrument.
Note Refer to the documentation included with the mmWave OTA Validation
Anechoic Chamber for safety requirements and maintenance information.
Related Information
mmWave OTA Validation Anechoic Chamber Interior on page 8
mmWave OTA Validation Anechoic Chamber Exterior on page 4
What You Need to Get Started on page 9
Software Overview
The mmWave OTA Validation Test Software comprises the following components for
interfacing and controlling the mmWave OTA Validation Anechoic Chamber and
instrumentation.
mmWave OTA Test Configuration UI
Use the mmWave OTA Test Configuration UI open-source LabVIEW graphical user interface
(GUI) to configure connection settings and measurement and sweeping parameters in the test
matrix file.
TestStand Template Startup Sequences
Use the installed TestStand template sequences to run the configuration files that you create
with the mmWave OTA Test Configuration UI. The template sequences control all aspects of
your OTA test and are open-source to enable customization of your test plan.
mmWave OTA Test Visualizer
Use the mmWave OTA Test Visualizer to complete offline analysis of the test data for antenna
measurements.
2| ni.com | mmWave OTA Validation Test Reference Architecture
mmWave OTA Test Positioner SFP
Use the mmWave OTA Test Positioner SFP to control the movement of the positioner.
Positioner Modes of Operation
The 3GPP standard for OTA test of 5G NR DUTs requires making power measurements in a
spherical grid around the DUT. This process can take a significant amount of time due to the
large number of points to test, the movement of the DUT positioner, and coordination with the
measurement equipment. NI provides two modes of operation for the positioner: Step-by-Step
Position Sweeping and Autonomous Position Sweeping.
OTA Measurement Interface (OTAMI)
Use the OTAMI LabVIEW interface to store your measurements and compute the most
common OTA measurements:
Measurements • Effective isotropic radiated power (EIRP)
• Total radiated power (TRP)
• Error vector magnitude (EVM)
• Half power beamwidth (HPBW)
• Beam center
• Beam direction
• First null beamwidth
Visualizations • 1D cut analysis
• 1D polar plot
• 3D antenna pattern
• Heat map
• Best beam index
Plugin Interfaces
Use the LabVIEW plugin interfaces to customize and adapt the mmWave OTA Validation Test
Reference Architecture for your testing environment. To enable the highest degree of
customization, NI provides the source code for the plugins. The following plugins are installed
with the mmWave OTA Validation Test Software.
•Antenna Control—An API framework that allows you to create a plugin to control your
specific active antenna module.
•Positioner Control—An API that allows you to use a different positioner with the
mmWave OTA Validation Anechoic Chamber. If your application requires a different
positioner, contact the NI services personnel contracted on your project for more
information about using this plugin.
mmWave OTA Validation Test Reference Architecture | © National Instruments | 3
Measurement Software
Use RFmx SpecAn and RFmx NR for compliant 3GPP 5G NR measurements and spectrum
measurements. You can also use the RFmx SpecAn SFP or RFmx NR SFP to control the
instrumentation.
Related Information
mmWave OTA Test Positioner SFP on page 25
RFmx Soft Front Panels on page 26
OTA Measurement Interface on page 33
mmWave OTA Test Visualizer on page 27
Antenna Plugin on page 33
Hardware Components
mmWave OTA Validation Anechoic Chamber Exterior
Top Bulkhead
Notice To avoid damage to chamber connectors, connect only cables that have the
correct connector type.
1A
2A
1B
2B
1A
2A
1B
2B
3A
4A
3B
4B
VHDCI
RJ45-1 USB2.0-1
VGA
RESET AM
E-STOPButton
15
1
DC
USB3.0/2.0
RFfilter
ThermalT Type 1/2
1A 2A 1B 2B
1A
2A
1B
2B
1A
2A
1B
2B
3A
4A
3B
4B
4| ni.com | mmWave OTA Validation Test Reference Architecture
Table 1. Connector Descriptions
Connector Connector Type Use
1A through 4A 2.4 mm Connects to the measurement antenna for horizontal and
vertical polarization. Ports 3A and 4A are reserved for
applications that use multiple antennas.
1B through 4B 2.92 mm Reserved for applications ≤40 GHz. The mmWave OTA
Validation Accessories Kit includes only 2.4 mm cables.
Side Control Panel
1A
2A
1B
2B
1A
2A
1B
2B
3A
4A
3B
4B
VHDCI
RJ45-1 USB2.0-1
VGA
RESET AM
E-STOPButton
15
1
DC
USB3.0/2.0
RFfilter
ThermalT Type 1/2
1A 2A 1B 2B
VHDCI
RJ45-1 USB2.0-1
VGA
RESET A M
E-STOP Button
15
1
Table 2. Connector Descriptions
Connector Connector
Type
Use
VHDCI VHDCI Connects to the PXIe-6361 Multifunction I/O Module
VHDCI connector for data acquisition of the state of the
positioner. This is required for autonomous operation.
RJ45-1 RJ45 Connects to the Ethernet port 1 on the PXI controller to
control the positioner.
USB2.0-1 USB Reserved for internal use.
VGA VGA Reserved for internal use.
mmWave OTA Validation Test Reference Architecture | © National Instruments | 5
Table 2. Connector Descriptions (Continued)
Connector Connector
Type
Use
E-Stop — Stops all motion within the chamber immediately.
Reset — Resets the chamber to the default operational state.
A — M
(Automatic or
Manual)
Key Switch Overrides the automatic lock feature on the exterior of the
chamber door when set to Manual. NI does not
recommend using the override feature during normal
operation.
Rear Bulkhead
1A
2A
1B
2B
1A
2A
1B
2B
3A
4A
3B
4B
DC
USB3.0/2.0
RF filter
Thermal T Type 1/2
1A 2A 1B 2B
DC
USB3.0/2.0
RFfilter
ThermalT Type 1/2
1A 2A 1B 2B
VHDCI
RJ45-1 USB2.0-1
VGA
RESET AM
E-STOPButton
15
1
Table 3. Connector Descriptions
Connector Connector Type Use
DC RF Filter Eight 4A 24 V filtered
DC connectors,
5.08 mm (8 position)
Supplies power to the DUT or other internal
DC needs.
Thermal T Type (x2) Thermocouple Monitors two different temperatures inside
the chamber.
6| ni.com | mmWave OTA Validation Test Reference Architecture
Table 3. Connector Descriptions (Continued)
Connector Connector Type Use
1A through 2A 2.4 mm Reserved for system calibration and DUTs
with >40 GHz inputs.
1B through 2B 2.92 mm Reserved for DUTs with ≤40 GHz inputs.
USB 3.0 USB Supplies a filtered USB connection into the
chamber for any DUT needs. Use the USB
3.0, 1.5 m maximum length cable included
in the chamber shipping kit to connect the
chamber to your PC.
Note Use the AC switch on the rear of the chamber to power on the system.
Related Information
External Connections on page 11
Operating the Chamber on page 10
mmWave OTA Validation Test Reference Architecture | © National Instruments | 7
mmWave OTA Validation Anechoic Chamber Interior
1 2
3
1. Arch
2. Measurement Antenna Fixture
3. Positioner
Note Although the arch can hold multiple antennas to support multi-antenna
positions at equidistant places from the DUT center of rotation, it holds only one
antenna for the mmWave OTA Validation Test Reference Architecture.
Related Information
Internal Connections on page 13
Getting Started
Refer to the topics in this section to get started using the mmWave OTA Validation Test
Reference Architecture. Complete the tasks in the following table in sequential order to ensure
your system is ready for use.
8| ni.com | mmWave OTA Validation Test Reference Architecture
Step Task Where to Go
1 Verify external chamber and
instrument connections.
External Connections on page 11
2 Verify internal chamber cable
connections and attach antennas.
Internal Connections on page 13
3 Align the measurement and reference
antennas.
Aligning the Antennas on page 16
4 Calibrate the system. Performing System Calibration on page 18
5 Perform a full antenna pattern test. Getting Started with Step-by-Step Position
Sweeping on page 22
6 Perform a fast full antenna pattern
test.
Getting Started With Autonomous Position
Sweeping on page 23
What You Need to Get Started
The following items are required to operate the mmWave OTA Validation Test Reference
Architecture.
Depending on your application, you may require a different variation of the items listed below.
Contact the NI services personnel contracted on your project to help you determine which
variation your application requires.
Required Hardware Components
• mmWave OTA Validation Anechoic Chamber
– Laser Alignment Kit
– Dual-Polarized Measurement Antenna Fixture
– DRH50 Dual Ridge Horn Antenna Fixture
• mmWave OTA Validation Accessories Kit
– PXIe-6361 Multifunction I/O Module
– SHC68-C68-RDIO2 Digital Cable
– Dual-Polarized Measurement Antenna
– DRH50 Dual Ridge Horn Antenna
– 3 dB 2.4 mm attenuator (x4)
– 1.85 mm (m)-to-1.85 mm (m) cable, 8 in. (x4)
– 2.4 mm (m)-to-2.4 mm (m) cable, 48 in. (x2)
– 2.4 mm (m)-to-2.4 mm (m) flexible cable, 48 in. (x2)
– Ethernet cable
– SMA (m)-to-SMA (m) cable, 48 in. (x4)
– SMA (f)-to-2.4 mm (m) adapter
mmWave OTA Validation Test Reference Architecture | © National Instruments | 9
Required Instrumentation
• PXIe-5831 Vector Signal Transceiver—IF and mmWave instrument configuration with
two mmRH-5582 modules (direct TRX ports only)
• PXIe-1092 or PXIe-1095 PXI Chassis
• PXI Express embedded controller or MXI controller system that meets the system
requirements specified in the chassis documentation.
• AC power cable
Optional Items
• A 0.9 N · m (8 lb · in.) calibrated torque wrench, 5/16 in. (NI part number 751120-01).
Required Software
You must install the following software to use the mmWave OTA Validation Test Reference
Architecture. NI recommends installing application software before installing the mmWave
OTA Validation Test Software.
• mmWave OTA Validation Test Software
• TestStand
• LabVIEW
• RFmx SpecAn
• RFmx NR
Note Refer to the mmWave OTA Validation Test Software Readme for more
information about compatible software versions.
Required Software for Instrumentation
The following instruments require specific drivers that are not installed with the mmWave
OTA Validation Test Software. Refer to the instrument documentation available at ni.com/
manuals for more information about installing required driver software.
•PXIe-5831 Vector Signal Transceiver and mmRH-5582 mmWave Radio Head
•PXIe-6361 Multifunction I/O Module
•PXIe-1095 Chassis or PXIe-1092 Chassis
Operating the Chamber
You must complete the following actions when operating the chamber.
Notice The leakage current from the EMI AC filter inside the chamber may cause
certain residual current circuit breakers (RCCB) to trip. Use the external isolator
provided with the chamber if you are connecting the chamber to an RCCB.
Power On and Reset the Chamber
Complete either of the following actions after you power on the chamber.
• If the key switch is set to Manual, press the Reset button.
• If the key switch is set to Auto, close the chamber door, then press the Reset button.
10 | ni.com | mmWave OTA Validation Test Reference Architecture
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