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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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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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
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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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 capacit...show more -
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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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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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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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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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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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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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Satellite TV External Modulation Optical Transmitter
HES-26S ( 950~2600MHz )
Hangzhou Huatai Optic Tech. Co., Ltd.
Huatai 1550nm satellite TV external modulated optical transmitter HES-26S, adopts external modulated technology, no laser chirp, very low dispersion distortion, high extinction ratio. It applies to long distance, high quality network application. It can transmit 950~2600MHz satellite SAT-IF signal through one fiber.
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Quadrature Sensor
SPECTEC Innovative Sensor Solutions
DIGISPEC Hall Effect Quadrature Sensors provide two digital output signals, 90º out of phase to each other, detecting speed (down to true zero speed) and direction of rotation of gear teeth and ferrous targets. Gear teeth as small as module 0.10" wide can be sensed. Standard output is provided from a 2.2kOhm internal pull-down resistor to a collector, which can sink 25 mA. Open collector can be provided. Output is protected against reverse voltage.
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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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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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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 Distortion Up To 125 GHz
S930712B
S930712B enables fast and accurate active device modulation distortion characterization under modulated stimulus conditions up to 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. S93072B 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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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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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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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...show more -
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Modular Optical Modulation Analyzer
M8292A
Optimized for the 400G speed class, the M8292A optical modulation analyzer provides a compact, faceless and rack-mountable test instrument that connects to the optical output of coherent transmitters. It leverages the full feature set of Keysight's vector signal analyzer and optical modulation analyzer software ensuring a known-good customer experience for analyzing complex modulated data signals.
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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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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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Arbitrary Load Control For Modulation Distortion
S94570B
Extend the modulation distortion application by computing figure of merits such as EVM and ACPR for any desired load with arbitrary load control (ALC). Modulation distortion with ALC integrates the powerful capabilities of the PNA-X with an electromechanical tuner so a non-50 Ω load can be presented to the DUT and changes in device performance or sensitivity to varying load conditions can be accurately measured.
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Quadrature Position & Rate Meter
Accepts low-level differential or single-ended 5 V logic level quadrature signals from shaft encoders to display scaled position or scaled rate. One, two or four transitions may be counted at a maximum combined rate of 250 kHz and be mathematically scaled to display in engineering units from -999,999 to +999,999. An analog output scaled to the display and relay outputs are optional.
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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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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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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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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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Modulation Distortion Up To 90 GHz
S930709B
S930709B enables fast and accurate active device modulation distortion characterization under modulated stimulus conditions up to 90 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. S930709B 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.
