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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
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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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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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Quadrature Signal Generator
TE5100-PCI
The TE5100 is a 100MHz Direct Digital Synthesized Signal Generator available in a 3U, CompactPCI or straight PCI format. The TE5100 generates Sine and ACMOS/TTL output signals simultaneously up to 100MHz in 1 µHz steps. Sweep, FSK, Chirp and Single Tone are generated on board. The virtual panel allows control up to 100MHz of all parameters. The TE5100 is equipped with a ±1ppm on-board TCXO clock and can accept an external clock source.
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Time to Amplitude Converters and Calibrator
A Time-to-Amplitude Converter (TAC) can achieve exceptional precision by using an analog technique to convert small time intervals to pulse amplitudes. When a timing application demands picosecond precision, a time-to-amplitude converter is a prime candidate. A time-to-amplitude converter is a productive solution for measurements less than 10 μs when time resolutions from 10 ps to 50 ns are required.
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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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Quadrature Decoder Board
MSXB 050
The MSXB 050 Quadrature Decoder Board allows a Data Acquisition Processor to read quadrature-encoded signals through its digital port. Quadrature-encoded signals are often used to measure the angular velocity and angular position of wheels, gears, and motors.
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Amplitude Detection
DLVA
BSC have full design and manufacture expertise in house to offer high reliability mixed technology Microwave and RF modules such as Successive Detection Log Video Amplifiers (SDLVA).
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Modulation Distortion Up To 53 GHz
S95070B
S95070B software enables fast and accurate active device modulation distortion characterization under modulated stimulus conditions up to 53 GHz. The wide dynamic range and vector error correction of the PXI VNA results in an extremely low residual EVM from the test setup, giving you a complete picture of your device’s performance without test system interference. S95070B software measures EVM, NPR, ACPR, and decomposes nonlinear signals and linear signals through spectral correlation between the input and output spectrum, without doing demodulation. Integration with the PXI VNA’s measurement flexibility enables you to do quick modulation distortion measurements along with traditional VNA tests.
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Coherent Modulation Transmitter
IQTX
Generating and controlling phase modulated optical signals is easy with the IQTX. The IQTX is referred to as a ‘Golden’ reference optical signal source because of its high repeatability and reliability.Its high bandwidth of 40 GHz ensures high quality optical signal generation, making it the ideal optical signal source for coherent communications applications.
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Modulation Distortion Up To 26.5 GHz
S930702B
S930702B enables fast and accurate active-device modulation distortion characterization under modulated stimulus condition up to 26.5 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. S930702B 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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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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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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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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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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Amplitude Detectors
Amplitude detection, which eliminates the carrier (or the subcarrier) at the Doppler filter output
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Modulation Distortion Up To 50 GHz
S930705B
S930705B enables fast and accurate active-device modulation distortion characterization under modulated stimulus condition up to 50 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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Optical Modulation Analyzer and High-speed Digitizer Test Solution
M8290A
The M8290A is a flexible solution platform for 400G coherent component and transmitter test. It incorporates a 92 GSa/s modular optical modulation analyzer and a 92 GSa/s 4-channel electrical digitizer. Besides these modules an additional arbitrary waveform generator module up to 92 GSa/s, such as the M8196A, can be added to the same AXIe chassis. This setup results in a compact and flexible coherent test solution that can be used together with additional specialized solution software for Integrated Coherent Receiver (ICR) and Analog Coherent Optical (ACO) module characterization.
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IRIG Amplitude Modulated Time Code Distribution Amplifier
1205A / 1205A-MC
Precise Time and Frequency, Inc.
The ptf 1205A is a 12-channel IRIG amplitude modulated time code distribution amplifier housed in a 1U high, 19″ rack package. The ptf 1205A uses an RF design combining the latest technology in low noise components to minimize input/output delays which are of the order of nano seconds.The unit uses two stages of input signal buffering to distribute the input signal to 12 separate outputs, and insure maximum isolation between individual output signals.
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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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Modulation Distortion Up To And Beyond 125 GHz
S930713B
S930713B enables fast and accurate active-device modulation distortion characterization under modulated stimulus conditions up to and beyond 125 GHz. The wide dynamic range and vector error correction of the PNA-X results in an extremely low residual EVM of the test setup, delivering you a complete picture of your device’s performance without test system interference. S930713B measures EVM, NPR, ACPR, and decomposes 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 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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Optical Modulation Generator Software
81195A
The Optical Modulation Generator Software 81195A introduces a new approach to optical test. Combined with the M8195A AWG it speeds up your test by a factor of up to 100 with its unique real-time mode. This helps design engineers of long-haul and metro optical transmission applications to maximize test efficiency and thus reduce development time and cost.
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Modulation Analyzers
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
APC484
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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Modulation Distortion Up To 70 GHz
S930707B
S930707B enables fast and accurate active-device modulation distortion characterization under modulated stimulus condition up to 70 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. S930707B 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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0.3Hz-6MHz Amplitude Display Functional Generator
MFG-8306
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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Analog Modulation and Frequency-Dependent Measurements
Modern lightwave transmission systems require accurate and repeatable characterization of their optoelectronic, optical and electrical components to guarantee high-speed performance.
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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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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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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.
