Variable Attenuators
Provide changeable resistance values.
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Variable Optical Attenuator
CARY-VA3301B
The CARY-VA3301B handhold variable optical attenuator is used for continuously variableoptical signal attenuation. Since the variable optical attenuator is used in the laser system for the on-line testing, CARY-VA3301B can be used in the digital system of communicationdevices (such as: PHD, SDH) and also can be used in the CATV system testing.
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Variable Resistor Load Bank
REOLOAD 100
A variable resistor load-bank with fixed stages connected in parallel and switched in, as required, with an adjustable stage for fine trimming. Designed for testing equipment under load. 1000V (AC or DC). 250A and 2500
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Voltage Control Attenuator
Voltage variable attenuator offering infinite attenuation precision and broadband performance
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Fixed Attenuators
DC to 220GHz
RF Attenuators are components that reduce the amplitude level of an incoming frequency signal. They are used to protect systems from receiving a signal with a power level that is too high to process. There are various types of fixed attenuators that can fit your engineering needs. Precision MMW will help you with the highest quality fixed attenuator products needs.View more Fixed Attenuators
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USB/Ethernet Control Step Attenuator
RF Lambda’s USB / ethernet control step attenuators utilize the same RF core as our standard digital attenuators only they incorporate a USB / ethernet controller to allow users to easily setup the control from any PC or network.
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Coaxial Programmable Attenuators
Coaxial attenuators are constructed with passivated stainless steel for durable use in both engineering labs and production line environments. These coaxial attenuators are designed and manufactured for low VSWR, low insertion loss and high attenuation value accuracy. The standard offering covers the frequency range of DC to 110 GHz and includes various interface options from 2.4 mm to 1 mm connector types as well as both male and female interfaces. The power handling of standard models is 0.5 to 1 watt continuous wave (CW). Higher power handling levels and different attenuation values and connector types from those listed below can also be requested.
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Programmable Digital Attenuator
LDA-602EH
The LDA-602EH has a large attenuation range of 120 dB with an exceptional 0.1 dB step size, allowing for both precision and accuracy during fading tests or device characterizations. This attenuator also features a fast 15 us switching speed, an operating temperature from -30oC to 50oC, a maximum RF input of +28 dBm, and is priced at $875. The LDA602-EH operates with a low insertion loss of 9 dB to 6 GHz, an input IP3 of +55 dBm and a typical VSWR of 1.3:1. Easily programmed for ATE applications, the LDA digital attenuators are a cost effective solution whether you are in engineering, the production test lab, or in the field. Units are ROHS compliant and can be used with any PC or laptop computer with USB 2.0 port (or powered USB hub) and Windows operating system. Lab Brick Signal Generators are provided with easy to use Lab Brick GUI software, 32 and 64 bit API DLL files, LabVIEW and Linux compatible drivers.
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MOTORIZED VARIABLE TRANSFORMER CONTROLLED POWER SUPPLY
Motorized Variable Transformer Controlled Power Supply, P/N 18534PSInput: 460 VAC, 3 PH, 60 HzOutput: 0 to 250 VDC, 200 Amp max.Variable Transformer is used to vary the output. SCR controller is not used, as it generates harmonics.Input control is 0 to 3.6 VDC.Indoor enclosure.Output voltage and current feedback as 4/20 mA for PLC interface.All input/output connections are inside the enclosure
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POWER ATTENUATORS
TYPE ATF
National RF’s Type ATF Power Attenuators were designed to allow interfacing of linear power amplifiers to RF exciters, where a specific amount of drive to the amplifier is prescribed. Often, however, drive from the RF exciter exceeds this minimum prescribed level and some form of power attenuation must be used in order to not damage the input of the power amplifier. National RF’s type ATF-3 offers 3 dB of power attenuation (1/2 of the power) when used between the exciter and the amplifier and will handle an input power of 132 Watts, RMS (continuous power) while providing about 66 Watts RMS output power, when it is terminated into 50 ohms. In practice, the ATF-3 attenuator will handle exciters achieving Peak Envelope Power levels (PEP) in the area of 200 to 250 Watts while providing half of that power to the load. For less attenuation requirements, the ATF-1 and ATF-2 offer 1 and 2 dB of attenuation, respectively.
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Attenuation Control Unit, DC to 6 GHz, 0 to 121 dB, 1-dB Steps
J7201A
Designed for WLAN and WiMAX™ device manufacturing test and mobile handset base transceiver station (BTS) handover test.
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Millimeter-wave and Microwave GaAs Attenuators
Keysight Technologies provides MMIC attenuators ideal for microwave radio, aerospace and defense, and instrumentation applications.
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Variable Area Flowmeters
Is a meter that measures fluid flow by allowing the cross sectional area of the device to vary in response to the flow, causing some measurable effect that indicates the rate.
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Attenuators And Pulse Limiters
A bidirectional attenuator, i.e. the attenuation and power capability specification is valid for both directions. There is a large variety of applications for this attenuator: The measuring range of a spectrum analyzer can be increased. Any kind of meter can be protected against overload; it can be used to control the linearity of a meter reading. It can minimize measurement uncertainty caused by mismatched impedances. During an EMI receiver calibration an attenuator directly at the pulse generator output is inevitable.
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Variable Frequency Series Resonant System
HTXZ / 120
Wuhan Huatian Electric Power Automation Co., Ltd.
The principle of series resonance is adopted to satisfy the ac/dc endurance test.
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Variable Tone Generator
> 60 Hz to 18 kHz approx> 1.3 VAC P/P> Frequency & Level Pots> Sine or Square Wave> 4.5 x 2.5 x 1.1 inches> 9 volt battery operation
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Attenuators
The National RF line of attenuators are compact, affordable attenuators which are ideal for insertion between a direction finding antenna and a receiver/transceiver, to aid in the DF process. In addition, they may be used in the laboratory for a low-power, in-line attenuation purposes. The affordable price is achieved by utilizing standard 5% tolerance resistors and commercial hardware. For laboratory purposes, an attenuation versus frequency curve (to 500mMHz) is provided.
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Coaxial Attenuators Set
11582A
The Keysight 11582A contains a set of four 8491B attenuators 3, 6, 10, and 20 dB furnished in a handsome walnut accessory case. The Keysight 8491B are type-N connectors with a maximum frequency of 18 GHz. This set is ideal for calibration labs or where precise knowledge of attenuation and SWR is desired.
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Digital Attenuator
DDA8-0.01-40G-2859
Digital Attenuator, 0.1~40GHz, Attenuation Range 0~63dB, Step 1dB, 0.5W, 2.92mm Female
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Direct Reading Attenuator with Remote Control
DA2XE
DA2XE Millimeter-Wave Direct Reading Attenuator is a measurement instrument for signal level setting or loss measurements in waveguide networks. It also can be used for calibration of other attenuation measurement instruments. Direct Reading Attenuators have rotary-vane design. The value of attenuation is determined by rotation angle of resistive film with respect to the waveguide channel. Attenuation value does not depend on frequency. The attenuator has electronic control. The attenuator can be used in local or remote (via USB 1.1 or higher) operation modes.The Attenuators are provided in waveguide bands between 18 GHz and 225 GHz.
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4 Channel Variable Gain Fast Amplifier
V974
The Mod. V974 is a 4 channel fast rise time amplifier housed in a 1-unit VME module; each channel features a voltage gain adjustable from 1 to 10 in x1 steps. Channels are non-inverting and bipolar: they amplify both positive and negative signals.
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Digital Attenuator
Chengdu KeyLink Microwave Technology Co., Ltd.
The products can be used in microwave electronic components. Its attenuation values are determined by the input TTL/LVTTL control signal. So that the link can be achieved the desired gain or loss value.KeyLink's digital attenuators can be categorized as follows.
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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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Coaxial Dynamics RF Attenuators
Coaxial Dynamics RF Attenuators offer a reliable and accurate method for reducing RF power levels. All of our designs dry convection cooled and can be used in any position.
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Voltage Controlled Linearized Attenuators To 16 GHz
Pulsar's voltage controlled, PIN diode linearized attenuators are available from 0.25-16 GHz with attenuation ranges of 32 and 64 dB. Each model includes an integrated linearizer, and a driver that controls the attenuation level. This design results in transient free switching between attenuation levels as opposed to the spurious outputs that result when an attenuation value is switched either on or off by a direct digitally controlled attenuator. Transfer function is 8 dB / Volt.
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Dual Attenuator
V859
The Model V859 is a passive dual section attenuator housed in a 1-unit VME module; the module does not require any power supply since it is made up of resistive cells
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PXI Attenuator Modules
Programmable RF Attenuators – accurate DC to 3GHz programmable attenuator has a 1dB step resolution, allowing it to adjust signal amplitudes for optimum measurement by other devices.Solid State Programmable RF Attenuators – available in triple or hex formats with bandwidths between 10MHz and 6GHz.High Voltage Attenuators – provide a convenient way of attenuating high voltage low frequency signals to levels that can be captured by other PXI devices without risk of damaging them.
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HVFO10X +/-5V (5x Attenuation) Universal Tip Accessory
HVFO100-5X-TIP-U
HVFO10X +/-5V (5x Attenuation) Universal Tip Accessory.
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HVFO10X +/-20V (20x Attenuation) Universal Tip Accessory
HVFO100-20X-TIP-U
HVFO10X +/-20V (20x Attenuation) Universal Tip Accessory.
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1KVA Variable Frequency Power Source
CX- 9001
Shenzhen Chuangxin Instruments Co., Ltd.
1KVA Variable-Frequency Power Source
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Aging and Optical Attenuation Tester
LS822
• Build-in DC Power Supply: Forward current preset: 0.1-800mA (special order) Range of forward voltage: 0.1-20.00V • Range of luminous intensity: 1mcd-3,000cd • Range of luminous flux: 1mlm-9,999,000lm(depends on the size of sphere) • Accuracy of photometer: class1; accuracy of electricity: class0.5 • Aging time: 9999Hours 59Munites 59Seconds • Tolerance of time: ±1S/10H • Record time: 16000times • Hold data automatically when the power is off and continue to work automatically when the power is turned on.
