QAM
a digital bitstream whose values are represented by adjustments in phase and amplitude of sinusoidal electromagnetic waves.
See Also: Quadrature Amplitude Modulation
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Product
IP Converters
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SMPTE-2022 compliant standalone solutions for conversion between IP and "traditional" DTV signals such as ASI and QAM. These IP converters are hardware-based, providing low latency and zero-jitter transmission of IP signals.
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Product
IPTV Monitoring and Test Solutions
Net-x TVMS
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The NET-xTVMS is a system of specialized computer probes networked to the enterprise server and clients. The probes, strategically located at the hub sites next to edge routers and edge QAMs, continuously monitor IPTV QoS with MPEG-TS transport metrics of SPTS and MPTS multicast streams as well as DVB-C MPTS streams. The NET-xTVMS is scalable from 1 to 1000 probes. Several types of probes are available to suit many different monitoring applications. Metrics are collected at the probes and alarms are sent to the server once they exceed predefined thresholds. A system wide alarm matrix, alarm logs and periodic metrics for each location can then be viewed via Internet on client computers.
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Product
PXI-5670, 2.7 GHz PXI Vector Signal Generator
778768-02
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2.7 GHz PXI Vector Signal Generator—The PXI‑5670 has the power and flexibility you need for product development applications from design through manufacturing. It can generate custom and standard modulation formats such as AM, FM, PM, ASK, FSK, PSK, MSK, and QAM. The PXI‑5670 delivers a highly flexible and powerful solution for scientific research, consumer electronics, communications, aerospace/defense, and semiconductor test applications as well as for emerging areas including software defined radio, radio frequency identification (RFID), and wireless sensor networks.
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Product
Power Sensors
RTP5006
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Providing the highest video bandwidth and fastest rise times, the 50 MHz to 6 GHz Power Sensor by Boonton is the ideal instrument for fast, accurate and reliable RF power measurements.This module is ideal for many different applications including Crest Factor and Peak to Average Power Ratio (PAPR) measurements for Power Amplifiers and RF components; Telecommunication & Satellite signals: W-CDMA, QAM, OFDM, LTE-FDD and LTE-TDD; WiFi signals: 802.11ac and legacy 802.11 a/g/n/b; RF and Microwave pulse modulated power measurements: RADAR, MRI, Particle Accelerators; General purpose scalar measurements such as gain and return loss using modulated and pulsed signals as well as CW; and Monitoring, Recording, ALC loops, transient phenomena.
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Product
Power Sensors
RTP5540
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Providing the highest video bandwidth and fastest rise times, the 50 MHz to 40 GHz Power Sensor by Boonton is the ideal instrument for fast, accurate and reliable RF power measurements. This module is ideal for many different applications including Crest Factor and Peak to Average Power Ratio (PAPR) measurements for Power Amplifiers and RF components; Telecommunication & Satellite signals: W-CDMA, QAM, OFDM, LTE-FDD and LTE-TDD; WiFi signals: 802.11ac and legacy 802.11 a/g/n/b; RF and Microwave pulse modulated power measurements: RADAR, MRI, Particle Accelerators; General purpose scalar measurements such as gain and return loss using modulated and pulsed signals as well as CW; and Monitoring, Recording, ALC loops, transient phenomena.
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Product
PXIe-5673E, 6.6 GHz PXI Vector Signal Generator
781263-03
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6.6 GHz PXI Vector Signal Generator—The PXIe‑5673E is a wide-bandwidth module that, when combined with the appropriate software, can generate a variety of signals. With the Modulation Toolkit for LabVIEW, it can generate different waveforms including AM, FM, CPM, ASK, FSK, MSK, PSK, QAM (4‑, 16‑, 64‑, and 256‑QAM), multitone signals, arbitrary waveforms, and many others. In addition, you can combine these vector signal generators with standard-specific software to generate signals for GPS, GSM/ EDGE/WCDMA, WLAN, WiMAX, DVB‑C/H/C, ISDB‑T, ZigBee, and others. With PXIe‑5673E stream‑from‑disk capabilities, you can generate continuous waveforms that are up to several terabytes in length.
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Product
Analog TV Analyzer
BT-QAM-PRO
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Blonder Tongue Laboratories, Inc.
The BT-QAM-PRO is an economical feature-packed test instrument for analyzing CATV QAM and Broadcast 8VSB digital channels, as well as NTSC analog channels. This compact instrument is designed with field service technicians in mind and provides many of the features that are typically only found in many higher-priced units. The BT-QAM-PRO comes complete with a soft water-resistant case and a micro USB charging/PC cable.
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Product
Handheld Signal Level Meter
CT-DLM870D
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The CT-DLM870D is a hand held signal level meter capable of reading analog, digital QAM and digital off air signal levels as well as Carrier to Noise, Bit Error Rate (BER), Modulation Error Rate (MER) and tilt.
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Product
Non-RMS Responding Power Detectors
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Recognized as the pioneer and leader in RF detectors, Analog Devices offers a broad portfolio of high performance logarithmic amplifiers and TruPwr™ rms detectors. ADI logarithmic amplifiers measure signals up to 100 dB dynamic range, from dc to microwave, and accuracies of ±0.2 dB, and are well-suited for both RSSI and transmit power level detection. The TruPwr rms detectors address the challenge of measuring complex waveforms found in spread spectrum CDMA/W-CDMA and higher order QAM modulation systems and provide an accurately scaled dc voltage, which is the rms equivalent of the input waveform.
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Product
QAM And PCM Analyzers
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GAOTek provides a wide range of high performance and inexpensive QAM/PCM analyzers. Quadrature amplitude modulation (QAM) and pulse code modulation (PCM) analyzers are convenient instruments with top to bottom estimations and adaptable setups. Additionally, these devices have integrated functions of analog signal generators/receivers, BERT, signaling generators/receivers, selective level meters, ring generators/ identifications, dialers, DC loop circuits (ICT, OGT), balanced bridges and reflecting bridges into solitary instruments. These analyzers are ideal for installing and maintaining digital and analog networks.
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Product
QAM Signal Analyzer
1720/1730
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he very excellent signal analyzers of choice for field testing of QAM digital signals on your CABLE-TV SYSTEM.They demodulate and accurately measure the QAM signals carried through the cable system.They provide the measurement power the field technicians need for the latest 64-256QAM digital technologies and are very simple to use, measuring SNR(MER), EVM, Pre-BER, Post-BER, Constellation Diagram.
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Product
Multi-standard Cable/terrestrial Modulator For PCI
DTA-115
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DekTec's PCI modulator for most QAM-, OFDM- and VSB-based modulation standards. The DTA-115 has a programmable output level with perfect signal quality.
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Product
Digital TV signal analyzer
1750QAM
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DIGITAL TV SIGNAL ANALYZER 1750QAM? The very excellent signal analyzers of choice for field testing of QAM digital signals on your CABLE-TV SYSTEM.They demodulate and accurately measure the QAM signals carried through the cable system.They provide the measurement power the field technicians need for the latest 64-256QAM digital technologies and are very simple to use, measuring SNR(MER), EVM, Pre-BER, Post-BER, Constellation Diagram.
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Product
8VSB/QAM And ASI Analysis Probe For USB-2
DTU-236A
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DekTec's USB-2 hardware-based analyzer for 8VSB and QAM. Equipped with advanced RF measurement options and designed to operate USB powered, this is a very convenient tool for analysis in the field.
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Product
IP QAM
SFT-IPSR3
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Hangzhou Softel Optic Co., Ltd.
SFT-IPSR33 is a 2RU rack-mount IPTV streamer server. It is optimal for small and medium internet service providers to initial setup in large network.
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Product
Power Sensors
RTP5518
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Providing the highest video bandwidth and fastest rise times, the 50 MHz to 18 GHz Power Sensor by Boonton is the ideal instrument for fast, accurate and reliable RF power measurements. This module is ideal for many different applications including Crest Factor and Peak to Average Power Ratio (PAPR) measurements for Power Amplifiers and RF components; Telecommunication & Satellite signals: W-CDMA, QAM, OFDM, LTE-FDD and LTE-TDD; WiFi signals: 802.11ac and legacy 802.11 a/g/n/b; RF and Microwave pulse modulated power measurements: RADAR, MRI, Particle Accelerators; General purpose scalar measurements such as gain and return loss using modulated and pulsed signals as well as CW; and Monitoring, Recording, ALC loops, transient phenomena.
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Product
16 Mux-scrambling Modulator
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Hangzhou Softel Optic Co., Ltd.
SFT3394C is a high performance and cost-effective QAM modulator designed by Softel. It has 16 DVB-S/S2 FTA tuner input to 16 non-adjacent carrier output with multiplexing, scrambling and QAM modulating included. It also supports maximum 512 IP input port and one IP (MPTS) output through GE1 and TS input for re-mux through 2 ASI ports. SFT3394C is also characterized with high integrated level, high performance and low cost. It supports dual power supply (optional). This is very adaptable to newly generation CATV broadcasting system.
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Product
CATV Meters & Instruments
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GAOTek offers high quality, affordable CATV meters and testers to industry engineers. These instruments are used by professionals to automatically or manually test, measure, and maintain a wide collection of systems and channels. Our products are portable and durable to ensure long operational use during everyday field use by CATV technicians. Additionally, we offer QAM analyzers, PCM channel analyzers and TDR cable fault locators.
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Product
ATSC/DVB-T/QAM VHF/UHF Modulator For PCI
DTA-112
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Cost-effective variant of DTA-115 with 75-Ω BNC main output and support for ATSC, QAM-A/B/C and DVB-T.
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Product
Digital TV Spectrum Analyzer
DS2831
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Fast Spectrum Analyzer: detect and troubleshoot ingress with exceptional sensitivity of -60dBmV @ 300KHz RBW. Color-Coded Persistence Test: find transient noise hiding under upstream bursty signaling, without disrupting service. MER Measurement: up to 47 dB MER with 48 hours of statistical recording with 1 second resolution. Analog TV and SC-QAM: troubleshoot typical analog interference and distortions as well as SC-QAM performance. Time-Domain EVS Measurements: uncover interference from LTE signals under downstream QAM carriers with no service interruptions.Characterize OFDM carrier performance and DOCSIS 3.1 cable modem performance.
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Product
Digiair PRO CATV
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Perfect for digital CATV installations (QAM).• Handy spectrum-analyzer for frequency 45-860MHz.• Easy digital readout of MER, BER and Constellation diagram.• QAM16, QAM32, QAM64, QAM128 & QAM256.• Analog signal level reads out in dBuV, dBmV and dBm with maxholdfunction.• Presents one channel readout with high resolution or six channelssimultaneously or the complete spectrum.• Very sensitive, easy to maximize weak and strong signals.• Built in beeper (pitch tone) and maxhold function.• Tilt function.• Replacable, rechargeable battery (8x AA 1200mA).• Power supply and car-charger enclosed.• Rubber carrying-case enclosed.
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Product
PXIe-5673E, 6.6 GHz PXI Vector Signal Generator
781340-04
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6.6 GHz PXI Vector Signal Generator—The PXIe‑5673E is a wide-bandwidth module that, when combined with the appropriate software, can generate a variety of signals. With the Modulation Toolkit for LabVIEW, it can generate different waveforms including AM, FM, CPM, ASK, FSK, MSK, PSK, QAM (4‑, 16‑, 64‑, and 256‑QAM), multitone signals, arbitrary waveforms, and many others. In addition, you can combine these vector signal generators with standard-specific software to generate signals for GPS, GSM/ EDGE/WCDMA, WLAN, WiMAX, DVB‑C/H/C, ISDB‑T, ZigBee, and others. With PXIe‑5673E stream‑from‑disk capabilities, you can generate continuous waveforms that are up to several terabytes in length.
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Product
Test Solutions
AT/CX/CM Series
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The VeEX AT/CX/CM series are next generation test solutions designed for analog and digital cable TV networks supporting VoIP, WiFi, and Internet service. Analog and Digital SLM, ingress noise sweep, deep interleave support, and QAM constellation analysis are among many standard features. Enhanced optional features include QAM16/64/128 Upstream Generation (USG), Reverse Path QAM Analysis, and DOCSIS 2.0/DOCSIS 3.0 Cable Modem emulation. A high capacity LiIon battery pack provides extended autonomy for a full day use with only a single charge.
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Product
Satellite Meters
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Wuhan Sunma Technology Co., Ltd.
Satellite Meter is a dedicated instrument for the direct version of the program using ST-Tech, integrated market-seeking Satellite, launched digital search Satellite.Satellite lock accurate, not false positives or missing signals, just listen to the sound of a few seconds can rapidly lock signal frequency. SunmaFiber provide all kinds of CATV meters, such as Signal Level Meter, QAM Analyzer, Spectrum Analyzer, DVB/DVC/DVT Analyzer and other TV testers.
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Product
Dual QAM-A/B/C Receiver For PCIe
DTA-2136
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DekTec's PCIe QAM-receiver card for J.83 Annex A, B and C. The DTA-2136 has two onboard demodulators, combined with two ASI output ports for monitoring the receiver output or for independent stream playback.
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Product
Measurement Power Amplifier
Qam
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The amplifier is DSP controlled, with a very straightforward operation. Included is a white/pink noise signal generator. The internal signal module provides low crest noise signals to be able to reach high power levels from sound sources or electromagnetic shaker. External input ofsignal is equally possible, with spectral linearisation or without. This can be used for music, RASTI or any other signal
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Product
Mobile Problem Locator
MPL
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The ComSonics Mobile Problem Locator (MPL) application is a smart phone application designed to provide cable technicians with a simple tool to help maintain their network. Targeted for use with ComSonics' QAM Compass via Bluetooth connection to provide contractor work verification.
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Product
MUX-scrambling Modulator
SFT3316
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Hangzhou Softel Optic Co., Ltd.
SFT3316 IP Mux-Scrambling modulator is the latest generational Mux-scrambling-modulating all-in-one device developed by SOFTEL. It has 16 multiplexing channels, 16 scrambling channels and 16 QAM (DVB-C) modulating channels, and supports maximum 1024 IP input through the GE port and 16 non-adjacent carriers (50MHz~960MHz) output through the RF output interface. The device is also characterized with high integrated level, high performance and low cost. This is very adaptable to newly generation CATV broadcasting system.
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Product
Multi-standard Cable/terrestrial Modulator For PCIe
DTA-2111
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DekTec's PCIe modulator for most QAM-, OFDM- and VSB-based modulation standards. The DTA-2111 has a programmable output level with excellent signal quality due to digital upconversion.
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Product
Radio Vector Tester
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Wuhan Sunma Technology Co., Ltd.
Radio & Vector Network Analyzer adopts the advanced digital and RF combination design technology, fundamental wave frequency mixing technology, digital IF processing technology, intelligent power management technology, etc. It comes with features of high precision, small size, light weight, battery power, can measure SWR, Return Loss, Cable Loss, Impedance, DTF, etc, is used to the field test of cable, feeder, and the reflection parameters test of RF components in science and teaching. SunmaFiber provide all kinds of CATV meters, such as Signal Level Meter, QAM Analyzer, Spectrum Analyzer, DVB/DVC/DVT Analyzer and other TV testers.
