Datasheet > USB-5680

USB-5680

更新时间： 2024-09-13 08:21:55

品牌	Logo	应用领域
美国国家仪器公司 - NI		二极管
页数	文件大小	规格书
4页	425K
描述
True RMS power measurements/Diode power meter

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中文翻译

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数据手册

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USB-5680 数据手册

6 GHz True RMS Power Meter

with Bus-Powered USB Connectivity

NI USB-5680 NEW!

• True RMS power measurements

• Diode power meter

Operating System

• Windows Vista/XP/2000

• -40 to +23 dBm power range

• 50 MHz to 6 GHz frequency range

• 10 and 100 Hz typical

channel bandwidth

Recommended Software

• LabVIEW

• LabWindows^™/CVI

Driver Software (included)

• NI-568x

•

0.13 dB accuracy at ꢀ+18 dBm

0.18 dB accuracy at ≥+18 dBm

• Internal zeroing capability

• ꢀ3 percent sensor linearity

• Standing wave ratio ꢀ1.2 to 6 GHz

• 100 mA typical power consumption

• USB bus connectivity

Calibration

• Gain and offset self-calibration

• 1-year external calibration cycle

• N-type connector

^>>For complete specifications, visit ni.com/manuals

and search for USB-5680 Specifications.

Overview

Architecture

The National Instruments USB-5680 is a 6 GHz true RMS (root-mean-

The USB-5680 RF power meter features a dual-path architecture to

square) power meter that features high measurement accuracy and wide achieve 63 dB of dynamic range. This architecture improves power

dynamic range. As a true RMS power meter, the NI USB-5680 is ideal

for measuring the power of continuous wave (CW) signals. In addition,

it offers better than 0.18 dB of linearity across all frequency ranges and

all power levels. This functionality, combined with a flexible API, makes

it ideal for measuring path loss in automated test applications. In

addition, its small size (less than 9.6 cubic in.) frees up valuable rack

space without sacrificing performance. One of the biggest benefits of the

USB-5680 is its USB connectivity. Powered solely from the USB cable, it

consumes only 100 mA of current. Thus, you can use this power meter in

both production test and field applications with a laptop. Moreover, USB

connectivity helps you easily integrate the power meter with PC and PXI

systems in an automated test environment.

measurement accuracy by ensuring that the diode sensors are used in

their most linear region. A block diagram of the USB-5680 architecture

is shown in Figure 1.

As Figure 1 shows, the first measurement range is from -5 to +23 dBm

and the second is from -40 to -5 dBm. This accounts for a combined

dynamic range of -40 to +23 dBm with a single power head.

27 dB

Attenuator

Averaging

Pre-Amp

Detector A

(-5 to +23 dBm)

10 dB

Attenuator

6 dB

Splitter

ADC

Microprocessor

DC Block

Input

USB

(-40 to -5 dBm)

6 dB

Attenuator

Averaging

Pre-Amp

Detector B

Figure 1. Block Diagram of the NI USB-5680

12 3 4

中文翻译

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