Communications Analyzer
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A spectrum analyzer is a type of electronic test equipment which measures an electrical, optical or audio waveform. A spectrum analyzer displays the frequency response curve as it occurs in real time. It can also measure the power spectrum when used with an antenna which has been properly calibrated.
There are two types of spectrum analyzers, analog and digital. The analog variety breaks down into two further sub-types. One type works by the means of a variable band-pass filter whose mid-frequency is swept through the range of frequencies to measure in the spectrum. The other type uses a superheterodyne receiver where an oscillator is swept through the range of frequencies to be measured. A digital spectrum analyzer works by computing the discrete Fourier transform (DFT). The DFT is a mathematical formula which transforms a waveform into the components of its frequency spectrum. Due to the superiority of digital technology, a digital analyzer will always outperform an analog analyzer in frequency resolution for a given acquisition time.
Some spectrum analyzers use a method of measurement which combines both the analog and digital methods. In this type of analyzer the incoming signal is down-converted to a lower frequency using superheterodyne techniques and then analyzed using fast fourier transformation (FFT) techniques.
Spectrum analysis equipment, especially optical spectrum analyzers, are widely used in the telecommunications industry to determine occupied network bandwidth. This type of test equipment is also used extensively in the audio industry. One such use is in room conditioning for high end stereo and home theater installs. A spectrum analyzer can pinpoint frequencies to cut or boost to compensate for room conditions thus leading to a more accurate representation of the source audio material. For many reasons they're an indispensable tool in ensuring the accuracy of network communications and audio systems.
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Visit Fiber Optic Tool Supply to find new and used optical spectrum analyzers, optical loss test sets and other fiber optic equipment at discount closeout prices.
Article Source: ArticlesBase.com - What Is A Spectrum Analyzer And How Does It Work?
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FingerTec Time Attendance TA200 Plus Color Fingerprint + RFID Time Clock $540.25 A time and attendance RFID and fingerprint reader with 256MB of flash memory, a 10,000 user capactiy and a 200,000 transaction capacity, as well as TCP/IP and USB flash disk communication and a built-in siren... |
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Watts Up Net Power Analyzer/Watt Meter USB Port 72222 $224.15 Now you can determine what it costs to run the electric water heater, energy-efficient refrigerator or any plug-in appliance. Just plug an appliance into The Watts Up .net, and it will instantly start measuring electricity thousands of times a second and displays that information in true dollars and cents. With all the same features as the Watts Up Pro ES, the Watts Up .net takes things a step fur... |
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Wohler 6466 E 380 Combustion Analyzer/Econometer Kit $1,336.77 The Wohler E380 Combustion Analyzer/Econometer is the industries most compact analyzer and it delivers outstanding performance for residential and light commercial applications.... |
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Hybrid Battery System Analyzer Features and Benefits: Tests Battery Pack performance while in the vehicle Tests auxillary AGM battery Read and erase trouble codes One person test - easy to use Safe - no exposure to dangerous high voltage Put your shop in the hybrid service business. The HYB provides technicians with the capability to perform battery service maintenance testing on several leading Hybrid vehicles. Simply ... |
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Quad-Band Yaesu VX-8DR Submersible VHF/UHF Amateur Radio Transceiver $510.00 The Yaesu VX-8DR is the ultimate HandHeld transceiver for Amateur radio use!Transmits on 4 Ham radio bands (50-54Mhz Six meter, 144-148Mhz Two meter, 222-225Mhz 1.25M, 430-450Mhz 70cm), & receives 0.5-999Mhz. With the optional FGPS-2 GPS module sold seperate, the radio is fully ready for APRS. Ready to go package Includes Wall charger, 1100ma LioN battery, antenna & belt clip. Other Optional avai... |
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NEW KENWOODEXCELON KDC-X993 CAR CD RECEIVER w/BLUETOOTH $319.00 The Kenwood Excelon KDC-X993 CD receiver features built-in Bluetooth® for hands-free calling and makes it easy to use your iPod® on the go. Its direct iPod connection lets you control your playlists and albums with the receiver's controls, while the multi-line display shows off your artist and song info in clear detail. Hook your iPod to the receiver's USB input, and you'll bypass your iPod's di... |
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Practical Packet Analysis: Using Wireshark to Solve Real-World Network Problems $25.96 It's easy to capture packets with Wireshark, the world's most popular network sniffer, whether off the wire or from the air. But how do you use those packets to understand what's happening on your network?With an expanded discussion of network protocols and 45 completely new scenarios, this extensively revised second edition of the best-selling Practical Packet Analysis will teach you how to make ... |
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Wireshark Network Analysis: The Official Wireshark Certified Network Analyst Study Guide $99.95 Wireshark is rated #2 in the Top 100 Network Security Tools by sectools.org. Wireshark is the world's most popular network analyzer tool. This book is the ultimate resource on Wireshark which is a MUST HAVE tool used by network IT professionals to troubleshoot, secure and optimize networks. Readers learn to capture wired and wireless traffic, focus on the cause of slow web browsing, identify why a... |
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Digital Logic Circuit Analysis and Design $129.99 For introductory digital logic design or computer engineering courses in electrical and computer engineering or computer science at the sophomore- or junior-level. Many recent texts place instructors in the difficult position of chosing between authoritative, state-of-the art coverage and an approach that is highly supportive of student learning. This carefully developed text was widely praised by... |
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PQR D50 Power Line Monitor $449.95 The PQR D50 Power Quality Recorder is a state of the art, fully integrated instrument which measures, records, and reports power disturbances, aiding in the analysis of power quality for AC power in medical, commercial and industrial applications. Disturbances detected on the Hot and Neutral Lines are recorded by their time, date, magnitude, and duration in a FLASH RAM memory. This data is then r... |
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