Variable Attenuators
Provide changeable resistance values.
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Manual Attenuator (Waveguide)
Manual control waveguide attenuators in both variable (continuous) or stepped in a variety of frequencies, attenuation values / step sizes and power levels
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Attenuator Assemblies
Any device designed to reduce the power of a wave or electrical signal without distorting it.
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Lake Variable Area Flow Meters
Lake Variable Area flow meters, often referred to as rotameters, measure flow rate of a liquid or gas by relating linear displacement of an internal “float” or sharp-edged orifice plate (Lake) to a corresponding flow rate. As flow rate increases, the orifice area that the flow moves through also increases – thus, the term “Variable Area.” Variable Area meters either allow flow through a peripheral orifice formed between a tapered wall and a float as in the traditional rotameter, or an annular orifice and an internal tapered metering pin in the Lake Monitor.
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Integrated Two Channel Variable Optical Attenuator with two Optical Power Meter Channels
N7752A
The Keysight N7752A combines an attenuator with 2 front-panel power meter channels, offering exceptional performance at a low price. The power meters permit measurements from any point in the measurements setup and assist in calibrating power offsets with respect to the attenuator output.
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Variable Power Supply
VS3
The VS-3 power supply is a very convenient portable, non-isolated “variable source” from 0 volts to 150 Vac or 0 volts to 150 Vdc and rated for up to 3 amps, thus the name VS-3. It is comprised of an illuminated voltmeter that reads to the first significant digit, AC variable system output voltage, DC variable system output voltage, logic output voltage and one sense (continuity) contact monitoring points. Banana jacks for connection of test leads are spaced at intervals that allow the use of dual banana test plugs if desired. The VS-3 is protected by two levels of overcurrent protection; AC input, and ground fault protection by a GFCI. All circuitry is housed inside a custom designed case made from 16 gauge steel. An Internal fan dissipates heat buildup and exhaust through louvered side vents built into the case. The carrying handle is designed with a “spring return to rest” position and is padded for comfort. The case has been sized for optimum portability and is balanced from the handle during transportation. The case has a powder coated finish that is scratch, chemical and weather resistant. Rubber padded feet support the case when in the upright position and a convenience receptacle is located on the side of the case. A unique feature of the VS-3 is that it contains “Magnet Packs” on the back of the case. These “Magnet Packs” can support the VS-3 and allow it to “hang” from any magnetic metal surface. The VS-3 can be powered by our UPS system, eliminating the need for an extension cord. The ability to magnetically attach the VS-3 near the source of connection and eliminating the need for an extension cord makes the VS-3 a “must have tool” for technicians.
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Digitally Controlled Programmable Attenuators
Broadband frequencies ranging from 30 MHz to 40 GHz. High attenuation levels up to 60 dB. PIN diode designs exhibit extremely fast attenuation step switching performance. Attenuation step size ranges from 0.03 dB to 1 dB. Programmable attenuator control bit sizes range from 5 to 10 bits. Models powered and command controlled via 15 pin female Micro-D socket or USB interface.
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3-Channel LOW PIM Attenuator
Corry Micronics' 3 channel, LOW PIM attenuator covers the 400 to 3000 MHz frequency range and has been specifically designed for major mobile access carriers who are attempting to measure or monitor passive intermodulation distortion/interference in communications systems.
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Attenuator Interconnect Kit, 3.5 mm
11716E
The 11716E attenuator interconnection kit provides the necessary parts to connect 84904K and 84906K programmable step attenuators in series.
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Variable Frequency Drives (VFD)
High performance, cost effective VFDs, ideal for both machines & process control.Unitronics VFDs offer options for both single and three phase VFDs from 0.4 kW and up to 500 kW.Unitronics VFDs can be used as a stand-alone product, or as part of a complete All-in-One package with our controllers.
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Very Low Pressure Variable Reluctance Sensor
DP103
The Validyne DP103 is designed for exceedingly low differential pressure measurement applications where high accuracy is required under rough physical conditions. With full scale ranges down to -0.008 psid (-0.56cm H2O), this instrument is being used in the measurement of very low flow rates of gases where symmetrical pressure cavities are required for dynamic response. It is also used in very small leak detection and pressure null detection systems.
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Waveguide Tunable Attenuators
*Low Insetion Loss*Full Waveguide Band Coverage*Precise Adjustment*High Maximum Attenuation
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Digital Attenuator Operating Frequency of 1 to 20 GHz
LDA Series
The LDA series of Lab Brick® RF and Microwave Programmable Digital Attenuators includes 50 Ohm and 75 Ohm bidirectional RF step attenuators with calibrated operation up to 20 GHz. These USB powered and controlled units require no additional DC supply voltage. They are easily programmable for fixed attenuation or swept attenuation ramps directly from the included GUI. Lab Brick Digital Attenuator API DLL, Linux drivers and LabVIEW-compatible drivers are also available for custom programming applications.
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Variable Gain Amplifier
VGA
RF Lambda’s variable gain amplifiers (VGA) are standard amplifiers which include a gain control pin to allow the customer to tune the gain for various applications without sacrificing performance and eliminating the need to use a separate amplifier and attenuator. Hermetically Sealed options are available upon request.
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PXI/PXIe Solid State Attenuator, Hex, 6GHz, 50Ω, SMA
41-182B-006
The 41-182B-006 (PXI) and 43-182B-006 (PXIe) are programmable RF attenuator modules with 6 channels in 2 slots capable of inserting a signal loss of 0 to 31.75dB in 0.25dB steps. The attenuator uses solid state switches for a long service life and fast operation with minimum settling time and no signal bounce.
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Programmable Attenuators
JFW offers 50 Ohm and 75 Ohm programmable attenuators with either relay or solid-state designs. 50 Ohm Relay Step Attenuators, 50 Ohm Solid-State Step Attenuators (TTL), 50 Ohm Solid-State Step Attenuators (USB), 75 Ohm Relay Step Attenuators, 75 Ohm Solid-State Step Attenuators, Analog Programmable Attenuators, High Power Solid-State Step Attenuators.
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Magnet & Integrated Variable Temperature Sample Space With DR Insert
Adapted MCK model DR inserted into 50 mm 1.6 K300 K VTI VTI cooling power used for condensing stage of DR Versatile solution as the magnet system can also be used with other inserts and measurement probes including He3, heated probes, rotator, VSM etc.
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Digital Step Attenuators
Analog Devices provides a range of broadband IC digital attenuators that come in low cost, leadless surface mount packages. Our digital attenuator family offers excellent attenuation and includes off chip ac ground capacitors for near dc operation, making it ideal for an extensive number of RF and IF applications.
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Fixed Attenuator (Coaxial)
Coaxial attenuators in a variety of attenuaton values, power levels and connector types.
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Step Attenuator
RSC
The R&S®RSC is a switchable, mechanical step attenuator. It is available in various models with up to 6 GHz and 18 GHz, and can also control compact external units up to 40 GHz and 67 GHz. The base units provide a GUI for various settings, calibration and configuration of external modules. All models have RF connectors on the front panel or rear panel for rack installation
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Analog Control Variable Gain Amplifiers (VGAs)
Analog Devices voltage controlled variable gain amplifiers provide continuous gain control over a wide dynamic range for a variety of audio and optical frequency bands. Our VGAs improve the dynamic range of a circuit by allowing users to adjust a signal’s amplitude in real time, which is invaluable for ultrasound, speech analysis, radar, wireless communications, and instrumentation-related applications.
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Coaxial Fixed Attenuator, DC to 18 GHz
8491B
The Keysight 8491B coaxial fixed attenuator provides precision attenuation, flat frequency response and low SWR over broad frequency ranges. The attenuator is available in nominal attenuations of 3 dB and 6 dB, as well as 10 dB increments from 10 dB to 60 dB. It has type-N connectors with a maximum frequency of 18 GHz. This attenuator is swept-frequency tested to ensure specification compliance at all frequencies. Calibration points are provided on a nameplate chart attached to each unit.
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Digital Step Attenuators (DSA)
High linearity, fast switching time with broad bandwidth. Best-in-class attenuation error with fine attenuation steps. Most robust ESD protection available.
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Programmable HiRes Wideband Digital Attenuator
LDA-133
The LDA-133 Digital Attenuator is a bidirectional, 50 Ohm step attenuator. It provides fast attenuation changes from 10 to 13000 MHz with a step size of 0.5 dB and 63 dB of control range. All attenuators are easily programmable for fixed attenuation, swept attenuation ramps and fading profiles directly from the included Graphical User Interface (GUI). Alternatively, for users wishing to develop their own interface, Vaunix supplies LabVIEW drivers, Windows API DLL files, Linux drivers, Python examples and much more.
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USB/RS232/SPI Programmable Attenuator
RUDAT-13G-90
Mini-Circuits’ RUDAT-13G-90 is a general purpose programmable RF attenuator supporting frequencies from 10 to 13000 MHz with attenuation from 0 to 90 dB in 0.5 dB steps. Its unique design maintains linear attenuation change per dB, even at the highest attenuation and frequency settings. The attenuator is controlled via USB, RS232 or SPI. It comes housed in a compact, shielded metal case with SMA(F) input/ output RF ports (RF ports are interchangeable), a USB type Mini-B socket, and a 9-pin D-sub(F) RS232 and SPI port. Power can be supplied via either USB or the D-sub port. The RUDAT-13G-90 is supplied with our easy-to-install, user-friendly GUI software, API objects for Windows® environments, and complete programming instructions for 32 and 64 bit Windows® and Linux® operating systems. See p. 9 for a complete list of included accessories.
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Attenuators
A passive electronic device that reduces the power of an electrical or optical signal without significantly distorting its waveform.
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Variable Angle Spectroscopic Ellipsometer
VUV-VASE
The VUV-VASE variable angle spectroscopic ellipsometer is the standard in optical characterization of materials used in lithography applications. Its measurement range spans vacuum ultraviolet (VUV) to near infrared (NIR). This provides incredible versatility to characterize numerous types of materials: semiconductors, dielectrics, polymers, metals, multilayers and now liquids such as immersion fluids.
