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Modulation
the varying of amplitude, frequency, or phase.
See Also: Optical Modulation, Modulation Analysis, Modulation Analyzers, Modulation Meters, MER
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Coherent Optical Communications
Generate high-bandwidth, complex modulation format optical signals with our high-performance coherent optical communications solutions.
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Digital and Analog Communications
1. Design and implementation of RF oscillators and filters. 2. Design and implementation of analog AM and FM modulation and demodulation. 3. Design and implementation of digital and analog converter. 4. Design and implementation of ASK and FSK modulation and demodulation. 5. Design and implementation of PSK and QPSK modulation and demodulation.
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Direct Modulated 1550nm Transmitter
HT1500B
Hangzhou Huatai Optic Tech. Co., Ltd.
External modulation technology for HT1500B 1550nm transmitter, with the laser working in direct current, has the advantages of no laser chirp, low dispersion distortion, large extinction ratio, and high speed. 1550nm transmitter also has the disadvantages of high cost and high difficulty in manufacturing.
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DME/Pulse Analyzer
EDS300
The R&S®EDS300 is a level and modulation analyzer designed for installing and maintaining pulsed, terrestrial navigation services.
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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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Dual Channel Arbitrary Function Generator
TGF4000
High resolution, low jitter pulses can be generated up to 100MHz as can wide bandwidth white noise. A extensive array of modulations is provided using internal and external sources. Gated, burst and sweep modes can use internal or external trigger sources. Remote control via USB and LXI compliant LAN (standard) can be supplemented by optional GPIB if required.
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Dual Channel Bit Synchronizer for Rates up to 45 Mbps
LS-45-DB
The Lumistar LS-45-DB Dual Channel Bit Synchronizer Daughterboard provides optimal reconstruction of a serial PCM data stream that has been corrupted by noise, phase jitter, amplitude modulation, or base line variations. The all-digitaldesign assures a high performance, consistent product, with excellent reliability and long-term stability. Dual channel design can feed each channel of the LS-55-DD dual decom. The LS-45-DB also has a post D combiner that allows for optimal ratiocombining of the two input signals A unique Built-in-Test feature allows performance verification for the Bit Synchronizer to ensure the highest level of operation. Auto-test BIT is performed for a short duration on the application of power and tests more than 90% of the Bit Synchronizer components. This test verifies that power is properly applied, verifies that there are no internal bit errors, and performs other tests to ensure that the bit synchronizer is fully operational with status indication of results. Command-test BIT performs the same functions and can be initiated by the user at any time through the Lumistar software when used on Lumistar PC products. The user has the ability to generate internal pseudo-random patterns and calculate internal bit error rates with or without the injection of forced errors.Various status indicators are also available through the software. The Bit Synchronizer also contains a BER reader as well as frame sync pattern indicator.
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Flicker Measuring Probe for LCM ATS
A712306
The Chroma A712306 Flicker Measuring Probe for LCM ATS is specifically designed for adjusting the flicker on LCM automatically following the FMA(Flicker Modulation Amplitude) standards defined by VESA (Video Electronics Standards Association) and JEITA (Japan Electronics Information Technology Industries Association) for flicker measurement.
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Four outputs FTTB CATV optical receiver
B9428
Hangzhou Huatai Optic Tech. Co., Ltd.
Huatai B9428 product series, 47~862MHz operate bandwidth, output level Vo=88dBμV ( Pin=-2dBm ), suitable for FTTP optical fiber access network, which is a low power consumption, high performance, and excellent cost performance RFTV broadcast network ONU(Optical network unit). This series of product adopts high sensitivity receiving tube and Huatai special low noise matching circuit Under 3.8% modulation, when transmitting in full channels and with receiving power of -10dBm, the CNR can still reach high index of 45dB. Therefore, if adopting B9428, it is only need very low optical power to reach 45dB CNR required by the user.
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FPGA Workbench and I/O Cards
FPGA Workbench software provides a complete development environment for building customized solutions based on Concurrent’s programmable FPGA cards. FPGA Workbench includes a powerful GUI for selecting and configuring a wide range of pre-developed data acquisition and industry-specific modules to meet your application requirements. The library of functional IP modules includes pulse width modulation, analog I/O, digital I/O, SENT protocol, encoder, ignition, injection, crank/cam shaft, wheel speed sensor and change-of-state.
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FTTP Multi-Port Output 1550nm External Modulation 47~862MHz
HT8500M
Hangzhou Huatai Optic Tech. Co., Ltd.
Huatai HT8500M series, Multi-optical port output externally modulated transmitter, a research product which is designed for FTTx PON large area and multi-user access. HT8500M series, use high-power , low noise, narrow linewidth, continuous broadcast, DFB lasers. It can provide 4~10 way high linearity standard optical power output. It can connect 4~10 units high-power FTTB EDFA( Like Huatai HA5837-32). AS this product without EDFA, so each optical port can out put up to :CNR≥53.5dB, CTB≥-65dB, CTB≤-65dB, the high technical index.
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Function Generator
FG-109
*FG-109 is a function generator with a high resolution of 10MHz DDS.*Various output waveforms: Sine, Square, Triangle, Pulse, Anti-Pulse.*Variable DC offset control : ±10V(no load).*Store / Recall. 20 settings*Counter up to 60MHz high frequency.*AM with internal and external carry.*Sweep mode with Linear and Log slope.*FM wide modulation range up to 10 times.*The signal Attenuate can be -20dB or -40 dB.*USB terminal for computer operation.*LCD Display
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Function Generators
Analogue and Digital (DDS) function generators with frequency capability from 3MHz up to 50MHz. Single and dual channel models with a comprehensive range of modulations and other capabilities. Remote control models with variants of USB, RS232, GPIB and LAN interfaces.
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GaAs pHEMT MMIC Power Amplifier, DC - 28 GHz
HMC994APM5E
The HMC994APM 5E is a GaAs pHEMT MMIC Distributed Wideband Power Amplifier which operates between DC and 28 GHz. The amplifier provides 15 dB of gain, +29 dBm of saturated output power, and 25% PAE from a +10V supply. With up to +38 dBm Output IP 3 the HMC994APM 5E is ideal for high linearity applications in military and space as well as test equipment where high order modulations are used. The HMC994APM 5E exhibits a positive gain slope from 2 to 20 GHz making it ideal for EW , ECM, and test equipment applications. The HMC994APM5E amplifier I/Os are internally matched to 50 Ohms and is packaged in a leadless QFN 5x5 mm surface mount package.
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Handheld Signal Level Meter
CT-DLM870D
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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HDTV Encoder Modulators
All-in-one 4 Channel Full HD Compact Encoder Modulator which integrates encoding MPEG-2, MPEG-4/H.264 modulation to convert HDMI/YPbPr /CVBS signals to digital RF output. To meet customers various requirements the B-QAM-HDMI-IP-4CH is also equipped with 1 ASI input and 2 ASI output ports.
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High Performance Function/Arbitrary/Pulse Generator 25MHz Or 50MHz, 1 Or 2 Channels
TG251xA/501xA Series
One or two channels0.001mHz to 50MHz/25MHz range; 14 digits or 1uHz resolution.Standard waveforms include sine, square, ramp, pulse, sin(x)/x, noise, exponential, logarithmic and PRBS.True pulse generator with variable delay and variable rise/fall.Arbitrary waveforms of up to 128K points at up to 125MS/s.Waveform storage using USB flash drives.Large graphic LCD with simultaneous text and waveform display.Comprehensive internal and external digital modulations including AM, FM, PM, PWM, FSK, BSPK, Sum and PRBS.20mV to 20V pk-pk output from 50Ohms ; plus multi function aux. out.Storage for multiple instrument set-ups in non-volatile memory.Waveform Manager Plus for Windows software included.Programmable via USB and LAN (LXI) interfaces; GPIB optional
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High Voltage Power Supplies
FuG high-voltage power supplies of all types except HYN are primary switched-mode power supplies with pulse width modulation . The rectified mains voltage is chopped into square pulses of constant frequency, transformed, rectified and smoothed. The square-wave voltage is pulse-width modulated for regulation.
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HUM DETECTOR (DEMODULATOR)
HD-500
Matrix Test Equipment Incorporated
The MATRIX Model HD-500 is a detector-amplifier designed to demodulate the low frequency amplitude modulations on any RF carrier over the range of 5 to 1500 MHz. These modulations are usually the undesirable result of the 50 or 60 Hz power source and are not necessarily sinusoidal. The unit is calibrated to the SCTE definition of hum modulation, which is the ratio of the peak-to-peak hum modulation to the peak of the carrier.
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Laser Diode Drivers
Arroyo Instruments offers a broad range of laser drivers to meet your exact test needs. From 100 milliamps to 100 Amps, all of Arroyo Instruments' LaserSource benchtop laser drivers include unique features not found on competing products such as optically isolated photodiode and modulation inputs, programmable PD bias, and both RS232 and USB computer interfaces. The LaserSource also has laser diode protection circuits such as interlock, ESD protection, and hardware limits for current and voltage.
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Leakage Current Sensors / Small Current Sensors
ChenYang Technologies GmbH & Co. KG
This current sensor is based on magnetic modulation and compensation principle, and can beused for measurement of small DC current and leakage current, current difference between two ormore conductors.
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LED Stroboscopes
Our LED stroboscopes use solid-state light sources that are very durable and long lived with no heat generation or drift over time. They feature push button control of all digital functions and pulse width modulation to ensure sharp images at high speeds and aluminum housings.
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Long Range, High Resolution Perimeter Surveillance Doppler Radar
Ranger® R5D
The Ranger® R5D is a dual mode, ground surveillance radar designed specifically for the environmental conditions common to the Middle East region. As a dual mode radar, the Ranger R5D uses FMCW modulation and can be operated in either Fast Scan or Doppler mode with a Fast Scan range up to 5km. Low minimum detection velocity (MDV), high resolution, and advanced tracking algorithms result in low false alarm rates.
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Modulatable Lasers
06-01 Series
*Plug and play ultra-compact diode lasers (MLD) and diode pumped lasers (DPL)*405 nm, 445 nm, 473 nm, 488 nm, 515 nm, 532 nm, 553 nm, 561 nm, 633 nm, 638 nm, 647 nm & 660 nm*Up to 250 mW, integrated electronics*Fiber pigtailed option*Optional integrated clean up filter*Fast and high aspect ratio option, modulation up to 150 MHz*Perfect for fluorescence microscopy, flow cytometry
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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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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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Multi-standard Cable/terrestrial Modulator For PCI
DTA-115
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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Multi-standard Cable/terrestrial Modulator For PCIe
DTA-2111
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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MULTI-STANDARD SIGNAL GENERATOR
VENTUS 2.0
Ventus 2.0 is a portable multi-standard signal generator operating with USB 2.0. It supports all common terrestrial broadcasting to satellite signals. Changing from one modulation to another is very easy with T-PUMP, included software.
