National Instruments USB-5683 Bedienungsanleitung

GETTING STARTED GUIDE

NI USB-5683

10 MHz to 8 GHz RF Power Meter

This document explains how to install, configure, and set up the NI USB-5683 radio frequency

(RF) power meter. NI RF power meters make true RMS power measurements. The NI RF

power meters ship with the NI-568x instrument driver, which you can use to program the

device.

For more information about the NI 5683, refer to the NI RF Power Meters Help, at Start»All

Programs»National Instruments»NI-568x»Documentation.

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

ni.com/updates for the latest version of NI-568x driver software.

Caution You can impair the protection provided by the NI 5683 if you use it in a

manner not described in this document.

Contents

Electromagnetic Compatibility Guidelines...............................................................................1

Verifying the System Requirements..........................................................................................2

Unpacking the Kit..................................................................................................................... 2

Verifying the Kit Contents................................................................................................ 3

Preparing the Environment....................................................................................................... 3

Installing the Software.............................................................................................................. 4

Installing the Hardware.............................................................................................................4

Connecting the Device Under Test........................................................................................... 5

Front and Back Panel........................................................................................................ 6

Connector Care and Handling...........................................................................................6

Configuring the NI 5683 in MAX.............................................................................................8

NI RF Power Meter Programming Options.............................................................................. 8

NI-568x Examples............................................................................................................ 9

Where to Go Next................................................................................................................... 10

Worldwide Support and Services............................................................................................ 10

Electromagnetic Compatibility Guidelines

This product was tested and complies with the regulatory requirements and limits for

electromagnetic compatibility (EMC) stated in the product specifications. These requirements

and limits provide reasonable protection against harmful interference when the product is

operated in the intended operational electromagnetic environment.

This product is intended for use in industrial locations. However, harmful interference may

occur 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 with

radio and television reception and prevent unacceptable performance degradation, install and

use this product in strict accordance with the instructions in the product documentation.

Furthermore, any changes or modifications to the product not expressly approved by National

Instruments could void your authority to operate it under your local regulatory rules.

Caution To ensure the specified EMC performance, operate this product only with

shielded cables and accessories.

Caution To ensure the specified EMC performance, the length of cables connected

to the RF and Trigger ports must be no longer than 3 m (10 ft).

Caution To ensure the specified EMC performance, the length of the USB cable

must be no longer than 30 m (100 ft).

Verifying the System Requirements

To use the NI 5683, your system must meet certain requirements. For more information about

minimum system requirements, recommended system, and supported application development

environments (ADEs), refer to the readme, which is available on the software media or online

at ni.com/updates.

Unpacking the Kit

Caution To prevent electrostatic discharge (ESD) from damaging the device,

ground yourself using a grounding strap or by holding a grounded object, such as

your computer chassis.

1. Touch the antistatic package to a metal part of the computer chassis.

2. Remove the device from the package and inspect the device for loose components or any

other sign of damage.

Caution Never touch the exposed pins of connectors.

Note Do not install a device if it appears damaged in any way.

3. Unpack any other items and documentation from the kit.

Store the device in the antistatic package when the device is not in use.

2| ni.com | NI 5683 Getting Started Guide

Verifying the Kit Contents

56 7

21 3

1. NI RF Power Meter with Dust Cap

2. USB 2.0 A to Mini-B Cable

3. BNC (m) to MCX (m) Cable

4. Precision Type-N-to-SMA Adapter

5. NI-568x Instrument Driver Software DVD

6. Certificate of Calibration

7. NI 5683 Getting Started Guide (This Document)

Other Required Items

In addition to the kit contents, you need the following items:

• 1 N · m torque wrench

• Desktop computer, laptop, or chassis with one available USB 2.0- or USB 1.1-compliant

slot

Preparing the Environment

Ensure that the environment you are using the NI 5683 in meets the following specifications.

Operating environment

Ambient temperature range 0 °C to 50 °C (Tested in accordance with

IEC 60068-2-1 and IEC 60068-2-2.)

Relative humidity range 45% to 95%, noncondensing (Tested in

accordance with IEC 60068-2-56).

NI 5683 Getting Started Guide | © National Instruments | 3

Storage ambient temperature range -40 °C to +71 °C (Tested in accordance with

MIL-PRF-28800F (Class 3).)

Maximum altitude 4,600 m operational

Pollution Degree 2

Indoor use only.

Note For detailed specifications, refer to the NI 5683 specifications document at

ni.com/manuals.

Installing the Software

You must be an Administrator to install NI software on your computer.

1. Install an ADE, such as LabVIEW or LabWindows™/CVI™.

2. Insert the driver software media into your computer. The installer should open

automatically.

If the installation window does not appear, navigate to the drive, double-click it, and

double-click autorun.exe.

3. Follow the instructions in the installation prompts.

Note Windows users may see access and security messages during

installation. Accept the prompts to complete the installation.

4. When the installer completes, select Restart in the dialog box that prompts you to restart,

shut down, or restart later.

Installing the Hardware

Install the NI-568x software before installing the hardware.

1. Ensure that the NI-568x software is installed.

Note If you connect the NI 5683 to a PC or chassis before installing the

software, the PC or chassis does not recognize the NI 5683.

2. Connect the A-Type USB connector to the PC or chassis and secure the Mini-B USB

connector to the power meter using the anchor screw.

Note The NI 5683 has a power requirement of approximately 450 mA. If you

plan to use the device through a USB hub, NI recommends using an external

power source.

Refer to the following figure for an example of a completed installation.

4| ni.com | NI 5683 Getting Started Guide

Figure 1. Installing the NI 5683

NI PXI-1042

NI USB-568x

1. PXI Chassis

2. USB Cable

3. Mini-B USB Port

4. Mini-B USB connector

5. NI RF Power Meter Back Panel

Connecting the Device Under Test

NI recommends that you zero the NI RF power meter after connecting to a USB port and

before taking power measurements. If you make frequent low-power measurements, zero the

power meter often.

1. Connect the NI RF power meter to a computer or chassis.

2. Zero the NI RF power meter.

3. Connect the Type-N front panel connector to the RF source connection.

Note You may need to use the included Type-N-to-SMA adapter, depending

on the RF source connection.

Caution Always refer to the specifications document before connecting

signals. Failure to observe the specified maximum signal ratings can cause

shock, a fire hazard, or damage to the devices connected to the NI RF power

meter. NI is not liable for any damage or injuries resulting from incorrect signal

connections.

Caution Do not turn the sensor body when mating the connectors. Always

use the specified torque wrench. Do not over-torque the connectors.

4. The back panel LED indicates the status of the NI RF power meter. To confirm that the

device is properly connected, refer to the following table for LED information.

NI 5683 Getting Started Guide | © National Instruments | 5

Table 1. LED Status Indication

LED Color Status

Green The NI RF power meter is connected to a computer or a chassis and is

functioning properly.

Yellow An error has occurred or the firmware is being updated.

Off The NI RF power meter is not initialized.

Front and Back Panel

Figure 2. NI 5683 Front Panel

1. Type-N Connector

Figure 3. NI 5683 Back Panel

1. Status LED

2. External Trigger In Terminal

3. USB 2.0 A to Mini-B Port

4. External Trigger Out Terminal

Note External Trigger Out capability is currently unsupported.

Connector Care and Handling

The NI 5683 is a high-quality precision laboratory device and should be carefully handled.

Follow the precautions listed in this section when handling or connecting devices. Complying

with these precautions guarantees longer component life and lower equipment downtime

because of connector or device failure.

6| ni.com | NI 5683 Getting Started Guide

Avoid Touching Connectors with Bare Hands

Avoid touching connector mating planes with bare hands. Natural skin oils and microscopic

dirt particles are difficult to remove.

Observe Pin Depth of Mating Connectors

Make sure to use the proper connectors to mate with the NI 5683.

NI recommends that you use precision or industrial grade Type-N connectors or that you use

SMA connectors when using the Type N-to-SMA adapter. Always check the pin depth of a

connector before use to determine if they are out of the specified range.

Avoid Lateral Pressure

Never put lateral pressure on the center pin of the connector.

Avoid Overtorquing Connectors

Do not overtorque connectors; doing so may damage the connector center pin. Always use a

1 N · m torque wrench when tightening connectors. Never use pliers. Never tighten the

connectors, adapters, or cables such that the center pin rotates.

Avoid Applying Excessive Power

The NI 5683 is rated for a specific maximum continuous input power. Exceeding the

maximum input power level permanently damages the internal components. Before making

connections, verify the maximum input levels labeled below the ports on the module front

panel.

Avoid Mechanical Shock

Precision connectors are designed to withstand years of normal bench handling. Handle the

connectors carefully and avoid dropping them. Mechanical shock significantly reduces their

service life.

Clean Connectors Carefully

Dirt and other contamination on the connector interfaces can affect the performance of the RF

components. To clean the connector interfaces, use only pure isopropyl alcohol as a cleaning

solvent. Do not use excessive amounts of alcohol, as this prolongs drying time. Apply the

alcohol with a foam-tipped swab instead of cotton swabs, because the cotton can become

lodged in the connector.

Use low-pressure compressed air to remove foreign particles and to dry the connector. After

cleaning, verify that the center pin has not been bent or damaged.

Store Connectors Properly

When not in use, keep the connectors covered with the dust cap included in the NI 5683.

Related Information

Refer to the RF Connector Care white paper for more information about proper connector

care.

NI 5683 Getting Started Guide | © National Instruments | 7

Configuring the NI 5683 in MAX

Use Measurement & Automation Explorer (MAX) to configure your NI hardware. MAX

informs other programs about which devices reside in the system and how they are configured.

MAX is automatically installed with NI-568x.

1. Launch MAX.

2. In the configuration tree, expand Devices and Interfaces to see the list of installed

devices.

Note If you do not see your device listed, press <F5> to refresh the list of

installed devices. If the device is still not listed, power off the system, ensure

the device is correctly installed, and restart.

3. Record the device identifier MAX assigns to the hardware. Use this identifier when

programming the NI 5683.

4. Self-test the device by selecting the device in the configuration tree and clicking Self-Test

in the MAX toolbar.

The MAX self-test performs a basic verification of hardware resources.

NI RF Power Meter Programming Options

You can acquire data with the NI 5683 by using the NI-568x soft front panel (SFP), or you can

control the NI RF power meter programmatically using the NI-568x instrument driver.

8| ni.com | NI 5683 Getting Started Guide

Table 2. NI 5683 Programming Options

Application

Programming

Interface (API)

Location Description

NI-568x Soft

Front Panel (SFP)

Available from the Start

menu at Start»All

Programs»National

Instruments»NI-568x»

NI-568x Soft Front Panel.

The SFP is a software representation of a

traditional benchtop power meter. Launch

the NI-568x SFP to use the NI RF power

meter interactively.

NI-568x

Instrument Driver

LabVIEW—Available on

the LabVIEW Functions

palette at Instrument I/O»

Instrument Drivers»

NI-568x.

NI-568x features a set of operations and

attributes that exercise all the functionality

of the NI 5683 including configuration,

control, and other device-specific

functions.

Tip You can modify an

NI-568x C example to create an

application with Microsoft

Visual C/C++, and all required

include and library files are

automatically added to the

project.

C or LabWindows/CVI—

Available at Program

Files\IVI

Foundation\IVI

\Drivers\ni568x and

Program Files

(x86)\IVI

Foundation\IVI

\Drivers\ni568x.

Header Files—Available at

Program Files\IVI

Foundation\IVI

\Include and Program

Files (x86)\IVI

Foundation\IVI

\Include.

Related Information

Refer to the Creating an Application with Microsoft Visual C and C++ topic of the NI RF

Power Meters Help if you prefer to manually add all required include files and library files to

the project.

NI-568x Examples

The instrument driver examples are instructional tools that demonstrate some of the

functionality of the NI RF power meter. You can use these examples separately or integrate

NI 5683 Getting Started Guide | © National Instruments | 9

them into your systems. NI-568x includes examples for getting started and other power meter

functionality.

The examples are available from the Start menu at Start»All Programs»National

Instruments»NI-568x»Examples.

Where to Go Next

Refer to the following figure for information about other product tasks and associated

resources for those tasks.

CREATE

custom applications with

an application programming

interface (API).

about hardware features

or review device

specifications.

more about your products through ni.com.

the application

development environment (ADE)

for your application.

*This item is also installed with the driver software.

EXPLORE LEARN

DISCOVER

Support

ni.com/support

RF Solutions

ni.com/rf

Updates

ni.com/updates

Services

ni.com/services

Getting Started with

LabVIEW

Getting Started with

LabWindows/CVI

Located using the NI Example Finder

Located online at ni.com/manuals

NI-USB 568x

Specifications*

NI RF Power Meters Help*

NI-568x Instrument Driver

NI RF Power Meters Help*

NI-568x Examples*

Tip The NI RF Power Meters Help is an HTML version of a traditional user

manual that includes detailed information about RF fundamentals, device features,

and programming the NI 5683.

Worldwide Support and Services

The National Instruments website is your complete resource for technical support. At ni.com/

support, you have access to everything from troubleshooting and application development

self-help resources to email and phone assistance from NI Application Engineers.

10 | ni.com | NI 5683 Getting Started Guide

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