DS2500Q Digital Handheld CATV QAM Spectrum Analyzer | Мобильные телефоны и аксессуары

DS2500Q Digital Handheld CATV QAM Spectrum Analyzer | Мобильные телефоны и аксессуары

Product Description Key Benefits • High Speed Spectrum Analysis: 4~1000MHz • Integrated DOCSIS 3.0 Cable Modem • Integrated Upstream Signal Generator (no FEC) •
Supports ITU- -T J.83 Annex A/B/C • Error Vector Spectrum: identifies interference signals under QAM carriers, with no break in
service • Auto Test

comprehensive measurement suite specifically designed for HFC network testing, troubleshooting, and maintenance. The DS2500Q's
main functions include Enhanced Spectrum Analysis, Analog & Digital TV analysis, DOCSIS 3.0 analysis, Upstream Signal Generator,
Ethernet testing, and Auto Test. The revolutionary EVS function enables users to detect coherent distortions hiding under QAM
carriers - without interrupting service. The DS2500Q supports Deviser's PC software toolkit, included with each unit, to make data
transfer a snap. High-Speed Spectrum Analysis The DS2500Q offers an enhanced spectrum analysis function, with a frequency range from 4MHz to 1000MHz and sensitivity down to
-55dBmV (@300KHz). Figure 2: Spectrograph The spectrogram provides a scrolling three-dimensional display, allowing users to track frequency and level over time - excellent
for analyzing intermittent signals. DVB-C Signal Analysis The DS2500Q supports the ITU-T J.83 Annex A/B/C standard, providing Channel Power, MER, BER, Constellation, and Digital HUM
measurements. Figure 4: Digital HUM The DS2500Q also offers Digital HUM distortion measurement, from the fundamental frequency to 4th harmonic components Figure 5: Constellation Display Figure 6: BER and MER Statistical Analysis EVS In-service Interference Detection The Error Vector Spectrum feature can find interference signals under a QAM carrier without service interruptions. Cable Modem Measurement The DS2500Q incorporates a standard DOCSIS 3.0 cable modem, compatible with DOCSIS 1.X, 2.0 & 3.0. The built-in modem supports 8x
DS and 4x US bonded carriers. Figure 8 (below) shows the CM statistical info screen - including downstream signal level,
modulation type, bandwidth, symbol rate, MER, BER, upstream signal level, symbol rate, & UCD (Upstream Channel Descriptor). Users
can select the desired DOCSIS mode, downstream channel, and UCD. Basic network test tools include Ping, Traceroute, PPPoE, FTP,
and Browser. Upstream Signal Generator The Upstream signal generator can generate a CW carrier or QAM signal. Sweeping mode is also available. Auto Test The DS2500Q comes equipped with a wide range of region standard channel plans spanning (in part) North America, Asia, and Europe,
as well as several sets of limit profiles - allowing users to design automatic tests. Tasks that can be automated include Analog
TV, Digital TV and Cable Modem testing. Once the analyzer completes an auto test, all items in the test results will indicate Pass
or Fail according to the limit profile. Results are automatically saved for later analysis

 

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