Wireless Test System · Wireless Test System Multi-Port Full Duplex RF Communications Test Set This document explains how to install, test, and use the Wireless Test System (WTS),

GETTING STARTED GUIDE

Wireless Test SystemMulti-Port Full Duplex RF Communications Test Set

This document explains how to install, test, and use the Wireless Test System (WTS),manufacturing number NI-MCT001. The WTS is a multi-port full duplex RF communicationstest set with up to 200 MHz of instantaneous bandwidth.

The WTS includes an embedded Standard Commands for Programmable Instruments (SCPI)interface. The SCPI interface, called the Wireless Test System Instrument Software (WTSSoftware) includes SCPI commands supported by the WTS instrument. Refer to the WirelessTest System Instrument Software User Guide, available at ni.com/manuals, for SCPI commandreference and example code for performing common measurements.

You can also use the TestStand Wireless Test Module (WTM), available at ni.com/downloads,to control the WTS and test DUTs.

Note You can use any programming language that sends SCPI calls over VISA tocontrol the WTS, however, this document describes getting started using only WTSSoftware.

Caution You can impair the protection provided by the WTS if you use it in amanner not described in this document.

The most recent versions of product documentation are available at ni.com/manuals.

ContentsElectromagnetic Compatibility Guidelines...............................................................................2Safety and Configuration.......................................................................................................... 3

Safety Information............................................................................................................ 3Connecting Safety Ground................................................................................................3Connecting to Power Source.............................................................................................3

Unpacking.................................................................................................................................4Preparing the Environment....................................................................................................... 4Verifying the Kit Contents........................................................................................................ 4

Other Equipment...............................................................................................................5Software Options...................................................................................................................... 5Setting Up Your WTS Instrument.............................................................................................6

Specifying An IP Address.................................................................................................7Virus Protection................................................................................................................ 8

http://www.ni.com/manuals

http://www.ni.com/downloads


Connecting the WTS to a Client PC......................................................................................... 8Verifying WTS Instrument Setup..................................................................................... 9Verifying WTS Instrument Connection.......................................................................... 10Direct Connections to the WTS...................................................................................... 10

Hardware Front Panel Connectors and Indicators.................................................................. 11Self-Calibration.......................................................................................................................13Troubleshooting...................................................................................................................... 13

What Should I Do If the WTS Instrument Does Not Appear In MAX On theClient PC?.................................................................................................................13

Maintenance............................................................................................................................14Cleaning the WTS...........................................................................................................14Cleaning the Fans and Intake Screens............................................................................ 14

Legal Information................................................................................................................... 17Limited Warranty............................................................................................................ 17Copyright........................................................................................................................ 18Trademarks......................................................................................................................19Patents.............................................................................................................................20Export Compliance Information..................................................................................... 20WARNING REGARDING USE OF NATIONAL INSTRUMENTS PRODUCTS...... 20

Worldwide Support and Services............................................................................................20

Electromagnetic Compatibility GuidelinesThis product was tested and complies with the regulatory requirements and limits forelectromagnetic compatibility (EMC) stated in the product specifications. These requirementsand limits provide reasonable protection against harmful interference when the product isoperated in the intended operational electromagnetic environment.

This product is intended for use in industrial locations. However, harmful interference mayoccur in some installations, when the product is connected to a peripheral device or test object,or if the product is used in residential or commercial areas. To minimize interference withradio and television reception and prevent unacceptable performance degradation, install anduse this product in strict accordance with the instructions in the product documentation.

Furthermore, any changes or modifications to the product not expressly approved by NationalInstruments could void your authority to operate it under your local regulatory rules.

Caution To ensure the specified EMC performance, operate this product only withshielded cables and accessories.

Caution To ensure the specified EMC performance, the length of any cableconnected to the Monitor, REF IN, REF OUT, CAL OUT, and PORT <0..n>connectors must be no longer than 3 m (10 ft).

Caution To ensure the specified EMC performance, the length of any cableconnected to the USB ports must be no longer than 30 m (100 ft).

2 | ni.com | WTS Getting Started Guide

Safety and ConfigurationRead this section before connecting the WTS to a power source.

Safety InformationCaution Before undertaking any troubleshooting, maintenance, or exploratoryprocedure, carefully read the following caution notices.This equipment contains voltage hazardous to human life and safety, and is capableof inflicting personal injury.• Grounding—The WTS requires a connection from the premise wire safety

ground to the WTS ground. The earth safety ground must be connected duringuse of this equipment to minimize shock hazards. Refer to the ConnectingSafety Ground section for instructions on connecting safety ground.

• Live Circuits—Operating personnel and service personnel must not removeprotective covers when operating or servicing the WTS. Adjustments andservice to internal components must be undertaken by qualified servicetechnicians. During service of this product, the MAINS1 connector to thepremise wiring must be disconnected. Dangerous voltages may be presentunder certain conditions; use extreme caution.

• Explosive Atmosphere—Do not operate the WTS in conditions whereflammable gases are present. Under such conditions, this equipment is unsafeand may ignite the gases or gas fumes.

• Part Replacement—Only service this equipment with parts that are exactreplacements, both electrically and mechanically. Contact National Instrumentsfor replacement part information. Installation of parts with those that are notdirect replacements may cause harm to personnel operating the chassis.Furthermore, damage or fire may occur if replacement parts are unsuitable.

• Modification—Do not modify any part of the WTS from its original condition.Unsuitable modifications may result in safety hazards.

Connecting Safety GroundCaution The WTS is designed with a three-position inlet that connects the cord-setground line to the WTS ground. To minimize shock hazard, make sure the electricalpower outlet you use to power the WTS has an appropriate earth safety ground.

Connecting to Power SourceCaution Do not install the WTS prior to performing the following power-on test.To completely remove power, you must disconnect the AC power cable.

1 MAINS is defined as a hazardous live electrical supply system that powers hardware. Suitablyrated measuring circuits may be connected to the MAINS for measuring purposes.

WTS Getting Started Guide | © National Instruments | 3

Attach input power through the rear AC inlet using the appropriate AC power cable.

Related InformationOther Equipment on page 5

UnpackingCarefully inspect the shipping container and the WTS for damage. Check for visible damageto the metal work. If damage appears to have been caused during shipment, file a claim withthe carrier. Retain the packing material for possible inspection and/or reshipment.

Preparing the EnvironmentEnsure that the environment you are using the WTS in meets the following specifications.

Operating ambient temperature(IEC-60068-2-1, IEC-60068-2-2)

0 °C to 50 °C

Operating relative humidity(IEC-60068-2-56)

10% to 90%, noncondensing

Maximum altitude 2,000 m (at 25 °C ambient temperature)

Pollution Degree 2

Indoor use only.

Verifying the Kit ContentsFigure 1. WTS Kit Contents

1 2

1. Wireless Test System2. Wireless Test System Getting Started Guide


Other EquipmentThere are several required items not included in your kit that you need to operate the WTS.Your application may require additional items not included in your kit.

Required Items

• USB keyboard.• USB mouse.• Monitor and DisplayPort monitor cable.• Ethernet cable(s).• Cable(s) with N type male connectors.• AC power cable. Choose an appropriate power cable for your region from the following

table:

Table 1. AC Power Cables

Power Cable Reference Standards

Standard 120 V (USA) ANSI C73.11/NEMA 5-15-P/IEC83

Switzerland 220 V SEV

AS C112 AS C112

Universal Euro 230 V CEE (7), II, IV, VII IEC83

North America 120 V ANSI C73.20/NEMA 5-15-P/IEC83

United Kingdom 230 V BS 1363/IEC83

Optional Items

• Client PC• BNC cable(s)

Software OptionsNI provides two software options for the WTS instrument—WTS Software and WTM.

Note WTM is an optional purchase and is not required to control the WTSinstrument.


Table 2. WTS Software Options

Software Description Use Case

WTSSoftware

WTS Software is embedded into theWTS instrument. WTS Softwareallows you to control the WTSinstrument using either SCPIcommands or the user interface (UI) toperform generation and analysisfunctions.

Use the SCPI commands to performmeasurements of connectivity andcellular standards for wireless devicetest, and to control parameters drivenby each command.

WTM WTM provides a LabVIEW frameworkthat allows you to easily create yourown DUT control and RF test stepplugins to use in test sequencesexecuted by TestStand. WTM includessample connectivity test steps andDUT control plugins as a starting pointfor development.

Use WTM to create full wireless testplans ready for a productionenvironment. To edit or createcustom test sequences, you must alsohave TestStand installed.

For WTM installation instructions,refer to the TestStand Wireless TestModule Readme, available at ni.com/manuals.

Setting Up Your WTS InstrumentYou require a monitor, DisplayPort cable, and a computer mouse and keyboard to completethis setup.1. Connect a monitor to the WTS with a DisplayPort cable.2. Power on the monitor.3. Connect a computer keyboard and mouse to the USB ports on the WTS.4. Connect the WTS to your local access network (LAN) as a normal computer using an

Ethernet cable.5. Connect the power cable to the WTS power input and connect the other end to a wall

socket.6. Press the power button on the front panel of the WTS.7. Complete the steps on the Set Up Windows screen that opens on the monitor.




Figure 2. WTS Installation

1

2

1. WTS2. Monitor, Keyboard, and Mouse

Related InformationConnecting Safety Ground on page 3Other Equipment on page 5

Specifying An IP AddressYou can specify an IP address for the WTS instrument using DHCP (default) or a fixed IP.• DHCP (left Ethernet port)• Fixed IP (right Ethernet port)—The default IP address is 192.168.0.10.

Note Check with your network administrator if you want to add the WTS toan existing network.

1. Open Control Panel»Network and Sharing Center then click Change AdapterSettings.

2. Select the Ethernet connection to which to assign the IP address.3. Select Internet Protocol Version 4 (TCP/IPv4) and click Properties.4. Specify the IP address and click OK.


Virus ProtectionEfficient virus protection is a prerequisite for secure operation in a network.

NI recommends the following when using anti-virus software on the WTS:• To prevent negative effects on instrument performance, avoid downloading signature files

from the Internet and scanning hard disks while using the WTS.• Disable real-time virus protection of the hard disk while using the WTS.

Note National Instruments excludes any liability related to the use of anti-virussoftware on the WTS.

Connecting the WTS to a Client PCYou can connect the WTS instrument to a client PC using a direct connection or through anetwork.

Tip For best results, dedicate one Ethernet port for the SCPI communication, andconnect the Ethernet cable from that port directly to the client PC to avoid slow hubsor switches.

Note If you are connecting directly to the WTS, the Ethernet port on the client PCmust use the same subnet as the host WTS. For example, if you are using the defaultfixed IP address for the WTS (192.168.0.10), use 192.168.0.1 for the clientPC. If you are connecting multiple clients to the host WTS through a switch, eachclient must have a unique IP address on the same subnet as the host.


Figure 3. WTS Connected to a Client PC

4

1

3

2

5

1. WTS2. Fixed IP Address Ethernet Connector3. DHCP-Enabled Ethernet Connector

4. Ethernet Cable5. Client PC

Verifying WTS Instrument SetupVerify that NI Measurement & Automation Explorer (MAX) detects the WTS instrument as anEthernet device.

Note NI-VISA must be installed on the client PC to use MAX. You can search forand download the NI-VISA installer at ni.com/downloads.

1. Connect your client PC to the LAN or directly to the WTS using a shielded Ethernetcable.

2. Launch MAX on the client PC by navigating to Start»All Programs»NationalInstruments»NI MAX or by clicking the NI MAX desktop icon.

3. Expand Devices and Interfaces.4. Click Add Network Device in the right pane, then click VISA TCP/IP Resource.5. In the Create New dialog box, choose the type of LAN resource you want to add based on

your network connection and firewall settings, then click Next.6. Select the LAN resource to add or manually specify the address information for the WTS,

then click Finish.7. Verify that the WTS appears under Network Devices.


http://www.ni.com/downloads

If the WTS does not appear, press <F5> to refresh the view in MAX.

Related InformationWhat Should I Do If the WTS Instrument Does Not Appear In MAX On the Client PC? on page13

Verifying WTS Instrument ConnectionThe simplest way to verify your WTS instrument connection is to open a connection and sendthe *IDN? command to the instrument. If the WTS connection is valid, the WTS returnsinstrument information. If you have MAX installed on the client PC, you can use thefollowing procedure.1. Launch MAX.2. Expand Devices and Interfaces.3. Verify that the WTS appears in the list of devices.4. Send the *IDN? command to the WTS using the Test Panel in MAX.

If the WTS does not return instrument information, refer to the Troubleshooting section.

Related InformationWhat Should I Do If the WTS Instrument Does Not Appear In MAX On the Client PC? on page13

Direct Connections to the WTSThe WTS is a precision RF instrument that is sensitive to ESD and transients. Ensure you takethe following precautions when making direct connections to the WTS to avoid damaging thedevice.

Caution Apply external signals only while the WTS is powered on. Applyingexternal signals while the device is powered off may cause damage.

• Ensure you are properly grounded when manipulating cables or antennas connected to theWTS PORT <0..n> connectors.

• If you are using noninsulated devices, such as a noninsulated RF antenna, ensure thedevices are maintained in a static-free environment.

• If you are using an active device, such as a preamplifier or switch routed to the WTSPORT <0..n> connectors, ensure that there are no signal transients greater than the RFand DC specifications for the device that are being generated and sourced to the WTSPORT <0..n> connectors.


Hardware Front Panel Connectors andIndicators

Note The previous illustration is not representative of all WTS models. The frontpanel of your specific model may differ.

Table 3. WTS Front Panel Icon Definitions

Refer to the user documentation for required maintenance measures to ensure usersafety and/or preserve the specified EMC performance.

The signal pins of this product's input/output ports can be damaged if subjected toESD. To prevent damage, turn off power to the product before connecting cables andemploy industry-standard ESD prevention measures during installation, maintenance,and operation.


Caution Apply external signals only while the WTS is powered on. Applyingexternal signals while the device is powered off may cause damage.

Table 4. WTS Front Panel Connectors

Connector Use

PORT <0..n> Full duplex signal analyzer/signal generator channels.

REF IN Input connector that allows for the system to be locked to an external10 MHz Reference Clock.

Note Not supported on all models.

REF OUT Output connector that exports a 10 MHz Reference Clock or the 120 MHzSample Clock.

CAL OUT Output connector that provides a signal generator local oscillator outputsignal of a frequency that is specified by setting the generator outputfrequency. This signal can be used as a calibrated tone for systemcalibration.

Ethernet (2) Connects the WTS to a PC or network using an Ethernet cable.

USB (4) Connects the WTS to a keyboard and mouse using USB cables.

Monitor Output Connects the WTS to a monitor using a DisplayPort cable.

Table 5. WTS Front Panel LEDs

LED Indications

TX<0..n> Indicates that the RF chain is configured for output (default).

<0..n> Indicates that signals are being received on the channel(s) that are lit.

STATUS Indicates the power status of the WTS.Red—Power is connected but does not meet the expected powerspecifications, which could indicate a problem with the internal powerdistribution.Green—The WTS is powered on.Amber—The WTS is being accessed.

Related InformationMaintenance on page 14


Self-CalibrationSelf-calibration adjusts the WTS for variations in the environment using an onboard high-precision calibration tone. Perform a complete self-calibration after first setting up your WTSand letting it warm up for 30 minutes.

Note Warm up begins when the WTS has been powered on and the operatingsystem has completely loaded.

The WTS is calibrated at the factory; however, you should perform a self-calibration in any ofthe following situations:• After first setting up the WTS.• When the system is in an environment where the ambient temperature varies or the WTS

temperature has drifted more than ±2 °C from the temperature at the last self-calibration.• To periodically adjust for small performance drifts that occur with product aging.

NI recommends you perform a full instrument self-calibration by executing theCALibration:RF:FULL command either through the WTS Software UI or sending it as aSCPI command.

Note Self-calibration may take up to 10 minutes to complete.

TroubleshootingIf an issue persists after you complete a troubleshooting procedure, contact NI technicalsupport or visit ni.com/support.

What Should I Do If the WTS Instrument Does NotAppear In MAX On the Client PC?1. Start MAX on the WTS instrument and perform the steps in Verifying WTS Instrument

Connection directly from the instrument itself, using the local host IP address,127.0.0.1.

The SCPI Interface Module window should appear. If the WTS instrument is availableon the instrument itself, but the WTS still does not appear in MAX on the client PC, theproblem is with the network connection, which can be physical, such as a bad networkcable, or logical, such as a bad network connection or incorrect firewall settings.

2. Try to ping the instrument from the client PC using the WTS instrument IP address.3. If the SCPI Interface Module window is not present in step 1, start the SCPI Interface

Module from the Start menu.4. If the problem persists, reboot your client PC and the WTS, then repeat the previous

steps.

Related InformationVerifying WTS Instrument Connection on page 10


http://www.ni.com/support

MaintenanceThis section describes basic maintenance procedures you can perform on the WTS.

Power off the WTS and disconnect the AC power cable before performing maintenance orcleaning the WTS. After maintenance is complete, ensure that the WTS is completely dry andfree from contaminants before returning it to service.

Cleaning the WTSClean the WTS exterior and interior as needed, based on the operating environment. Periodiccleaning increases reliability.

Interior CleaningUse a dry, low-velocity stream of air to clean the interior of the WTS. Use a soft-bristle brushfor cleaning around components.

Exterior CleaningClean the exterior surfaces of the WTS with a dry lint-free cloth or a soft-bristle brush. Do notuse abrasive compounds on any part of the chassis.

Caution Do not use harsh chemical cleaning agents; they may damage the WTS.Avoid chemicals that contain benzene, toluene, xylene, acetone, or similar solvents.

Cleaning the Fans and Intake ScreensClean the WTS fans and metal intake screens from dust and other impurities regularly toensure proper functionality of the WTS.

Removing the Fans and Intake ScreensComplete the following steps to remove the fans and intake screens from the WTS for propercleaning. Refer to the following figure for exact part locations.1. Carefully turn over the WTS and locate the fan access panel on the bottom of the

instrument.2. Remove the fan access panel screws and the fan access panel.3. Remove the two fan shoulder screws that fasten each fan.4. Carefully remove the fans from the WTS. Do not disconnect the fan cable from the inline

connector.5. Remove the intake screens.6. Clean the fans and intake screens. Refer to Interior Cleaning on page 14 for cleaning

information.


Figure 4. WTS Part Locations (WTS Shown Upside Down)

1

3

4

6

5

2

1. Fan Shoulder Screw (x4)2. Fan Access Panel Screw (x2)3. Fan Access Panel

4. Fan (x2)5. Intake Screen (x2) (Visible Through Fan)6. WTS

Installing the Fans and Intake ScreensComplete the following steps to install the fans and intake screens after cleaning.1. Place the intake screens back in the original location below the fans.

Note Ensure that the intake screens do not fall out.

2. Place the fans inside the fan bracket with the square slot oriented as shown in thefollowing figure.

Note Air flows into the chassis, so the plastic grill and label on the fansshould face toward the front of the WTS.


Figure 5. WTS Fan Housing

FLOW

AIR

1

1. Square Slot on Fan Housing

3. Install the fan shoulder screws and tighten the screws to between 3.0 lb · in minimumtorque and 3.6 lb · in maximum torque.

4. Place the fan access panel over the opening and secure with the access panel screws.Tighten the access panel screws to between 3.0 lb · in minimum torque and 3.6 lb · inmaximum torque.

5. Caution Ensure there are no loose parts prior to plugging in the power cord.

Reorient the WTS to an upright position.


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Documents

Wireless Test System · Wireless Test System Multi-Port Full Duplex RF Communications Test Set This document explains how to install, test, and use the Wireless Test System (WTS),