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Quadrature Amplitude Modulation
a digital bitstream whose values are represented by adjustments in phase and amplitude of sinusoidal electromagnetic waves.
See Also: QAM, QAM Analyzers
- DragoonITCN
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Countermeasures Sequential Timing & Amplitude Tester
C-STAT
C-STAT, or Countermeasures Sequential Timing and Amplitude Tester, is a Firing Pulse Interval Test Set, a suite of test components designed to analyze firing pulse timing and amplitudes from a CMDS system such as ALE-47.
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DSP Upconverters
Renesas digital signal processing (DSP) upconverter products include a quad programmable upconverter (QPUC) which is a QASK/FM modulator/FDM upconverter designed for high dynamic range applications such as cellular basestations and a wideband programmable modulator (WPM) which is a quadrature amplitude modulator/upconverter designed for wideband digital modulation.
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QAM And PCM Analyzers
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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Quadrature Input PCI Cards
PCI-QUAD-8
The PCI-QUAD-8 provides quadrature counting on a convenient half-length PCI card. Up to eight differential encoders (each with A, B, and Index) can be monitored simultaneously.
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PCI Counter/Timer with Quadrature
APC482
Several models with a variety of configurations provide up to ten counter/timer channels for counting events, generating waveform control signals, measuring pulse-widths, periodic rates, or quadrature position and monitoring operations.
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Optical Modulation Analyzer
Signaling has migrated from simple on-off keying to complex modulation formats such as DP-QPSK and PM-16QAM. Advanced test tools are required to test the latest communication systems for 100G, 400G, 1Tb/s and beyond. Tektronix is the only test and measurement vendor that can offer a complete coherent optical test system from signal generation, to modulation, acquisition, and analysis.
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Couplers (Quadrature, 180, Directional)
PMI offers the highest quality quadrature couplers for commercial and military applications in the frequency range of a few MHz to 40 GHz. If you do not see exactly what you need, please email your requirement to sales@pmi-rf.com so we can propose an instant solution.
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Stream Processing & Modulation
MediaKind’s broad range of Video Processing Management products are engineered for the full range of control and monitoring needs and applications.
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Amplitude Detectors
Amplitude detection, which eliminates the carrier (or the subcarrier) at the Doppler filter output
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Modulation Distortion For E5081A Up To 20 GHz
S960704B
The Keysight S960704B modulation distortion software application enables fast and accurate active device modulation distortion characterization under modulated signal conditions up to 20 GHz. The wide dynamic range and vector error correction of the ENA-X yield an extremely low residual EVM of the test setup, delivering a complete picture of your device’s signal distortion performance without test system interference. S960704B software measures EVM, NPR, ACPR, and decomposes linear and nonlinear signals by spectrally correlating input and output spectrum without needing to demodulate. Integration with the ENA-X measurement flexibility enables quick modulated signal distortion measurements along with traditional VNA tests.
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Optical Modulation
Unlocking the potential of optical modulation at Exail involves navigating a landscape of challenges. Essential objectives include high-speed modulation for efficient data transmission, precise modulation depth control, and minimizing signal distortion. Managing power consumption and ensuring stability across varied environmental conditions are equally critical. These challenges propel us to refine and innovate, meeting the dynamic demands of tomorrow's optical applications.
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Modulation Distortion For E5081A Up To 44 GHz
S960707B
The S960707B modulation distortion software application provides nonlinear DUT behavior tests (EVM, NPR, and ACPR) under modulated stimulus conditions.
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Amplitude Detectors with Isolators
Full band waveguide detectors are GaAs beam lead Schottky diode-based detectors that are specially designed for millimeterwave network analyzer applications. With a proprietary circuitry design and careful diode selection, these zero-biased detectors exhibit high sensitivity and extremely flat output characteristics. The below standard offering covers the frequency range of 18 to 170 GHz and offers a 1 MHz video bandwidth and 1 MΩ video output impedance. The standard models also have the capacity to handle a maximum RF input power of up to +17 dBm. The RF interface of these detectors is a standard waveguide with an integrated Faraday isolator to improve the port VSWR. The output voltage polarity is negative and the connector type is a female SMA. Other configurations are offered as custom models.
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Optical Modulation Index
OMI
*Automatically measures OMI*Helps to optimize transmitters in just minutes*Eliminates the need for expensive equipment*Useful for multiple CATV system procedures*DOCSIS 3.1 compatible
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3MHz Multi-Waveform Signal Generator with Modulation
Model MSGM3M
- 0.3Hz to 3MHz Frequency Output in 8 Ranges- Versatile Waveforms: Sine, Square, Triangle, Ramp, Pulse and DC outputs- Standard AM, Balance AM, FM, ASK, FSK, PWM Modulation and Sweep Mode- Internal / External Modulation
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Modulation Analyzer
8201A
The Model 8201A provides precision modulation and audio analysis in a single, easy-to-operate package. Measures AM, FM, PM, carrier and audio frequencies, SINAD, distortion and carrier level.
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PCI Counter/Timer with Quadrature Board
APC483
Several models with a variety of configurations provide up to ten counter/timer channels for counting events, generating waveform control signals, measuring pulse-widths, periodic rates, or quadrature position and monitoring operations.
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Quadrature Incremental Decoder Interface for VMEbus
VME323
The VME323 is an Intelligent Quadrature Incremental Decoder VMEbus Board which can be configured for interfacing quadrature incremental encoders with or without an index channel. In index mode up to sixteen encoders with two quadrature channels and an index channel can be connected, and in non-index mode up to twentyfour encoders with two quadrature channels can be connected. The VME323 operates on two encoder input channels and decodes a pair of out-of phase signals in order to increment or decrement a counter.
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Arbitrary Load Control For Modulation Distortion - Export Control
S94571B
Load pull capability for modulation distortion measurements up to 50 GHz for export controlled countries
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0.3Hz-3MHz Amplitude Display Functional Generator
MFG-8303
Features:*Max. frequency up to 15MHz*Single-chip function generating module provides high stability and low distortion waveforms*5 digit frequency display, 3 digit amplitude display.*Built-in frequency meter for testing external signal up to 20MHz*Linear and Logarithmic sweep function.*AM/FM function optional(Models with suffix “A”)*5W Power Output function optional(Models with suffix “W”)
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Modulation Distortion Up To 43.5 GHz
S930704B
S930704B enables fast and accurate active-device modulation distortion characterization under modulated stimulus condition up to 43.5 GHz. The wide dynamic range and vector error correction of the PNA-X result in an extremely low residual EVM of the test setup, so you can get a complete picture of your device’s performance without test system interference. S930704B can measure EVM, NPR, ACPR, and can decompose nonlinear signals and linear signals with the spectral correlation between input and output spectrum without doing demodulation. Integration with the PNA-X SCCM provides quick modulation distortion measurements while making other VNA measurements.
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Modulation Distortion Up To 13.5 GHz
S930701B
S930701B enables fast and accurate active-device modulation distortion characterization under modulated stimulus condition up to 13.5 GHz. The wide dynamic range and vector error correction of the PNA-X result in an extremely low residual EVM of the test setup, so you can get a complete picture of your device’s performance without test system interference. S930701B can measure EVM, NPR, ACPR, and can decompose nonlinear signals and linear signals with the spectral correlation between input and output spectrum without doing demodulation. Integration with the PNA-X SCCM provides quick modulation distortion measurements while making other VNA measurements.
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Rack Mount, 1U, Switchable Dual 2x4/1x8, LL/UL/S Bands, Programmable Amplitude Balance
LS-16A-R1-24SLUS
High Performance rack mount 1U x 12” deep switchable Multicouplers are available in multiple IN X OUT configurations, such as 1×8, dual 2×4, 1×4 and 1×6. The LS-16 product line covers 300 MHz to 6000 MHz. High output/output isolation and Ethernet / USB controllable gain adjustments for each channel are available as options.
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Quadrature Digital Up Converters
QDUC
Analog Devices digital up/downconverters serve as the frequency translator and digital filter between data converters and DSP blocks. These innovative products enable highly programmable and configurable receive and transmit signal chains, allowing multichannel, multicarrier radio platforms in 3G wireless base stations. They also meet the digital data conversion requirements for many other communications applications.
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Eight and Four Channel Quadrature Encoder Input Cards
mPCIe-QUAD
The mPCIe-QUAD-8 consists of a type F1 PCI Express Mini Card (mPCIe) interface board that connects to two DB-37F Modules via included 9” cables. The mPCIe-QUAD-4 consists of a type F1 PCI Express Mini Card (mPCIe) interface board that connects to one DB-37F Module via an included 9” cable. The modules are designed to be easily panel-mounted in any application environment, and have convenient mounting holes for non-panel-mount applications. Up to eight differential (or single-ended) encoders (each with A, B, and Index) can be monitored simultaneously.
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Modulation Distortion Up To 8.5 GHz
S930700B
S930700B enables fast and accurate active-device modulation distortion characterization under modulated stimulus condition up to 8.5 GHz. The wide dynamic range and vector error correction of the PNA-X result in an extremely low residual EVM of the test setup, so you can get a complete picture of your device’s performance without test system interference. S930700B can measure EVM, NPR, ACPR, and can decompose nonlinear signals and linear signals with the spectral correlation between input and output spectrum without doing demodulation. Integration with the PNA-X SCCM provides quick modulation distortion measurements while making other VNA measurements.
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PC/104 Digital Quadrature Encoder Input Board
104-QUAD-8
The 104-QUAD-8 card is a general purpose Quadrature Encoder Counter/Interface board. It is provided in the popular 104 format and conditions and monitors the outputs of 8 encoders. I/O connectors are right-angle 34-pin headers.
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Integrated Optical Modulation Analyzer
N4392A
The new Keysight N4392A is an ultra-compact, portable fully integrated optical modulation analyzer with a 15'' laptop-size screen. It is optimized for daily R&D work and designed for the most affordable performance verification in manufacturing and component test for 40/100G components, modules and systems. It is the first optical modulation analyzer that provides built-in performance verification and recalibration, extending the factory recalibration cycles significantly.
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Modulation Measurement System
MMC
This connector panel is used to bring test signals from the rear side of a rack up to the front side of the rack so that measurements can be made without climbing in behind the rack.
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Signal, Spectrum, & Modulation Analyzers
A tool used to analyze data. For example, a gas analyzer[1] tool is used to analyze gases. It examines the given data and tries to find patterns and relationships. An analyser can be a piece of hardware or software.
