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350D Agilent Step Attenuator

Used

The 350D is a step attenuator from Agilent. Attenuators are a type of radio frequency (RF) test equipment that’s useful during RF design. When an engineer needs to reduce (attenuate) the level of an electronic signal, he or she uses an attenuator. Attenuation can protect circuit stages from receiving signal levels that are too high. RF attenuators may be fixed, switched, or variable, depending on their capabilities and applications.

Additional Features:

  • 5W, 55V 600Ω
  • Attenuation: 110 dB in 10 dB and 1 dB steps (additive)
  • Accuracy, 10-dB Section: From dc to 100 kHz, error is less than ±0.125 dB at any step; from 100 kHz to 1 MHz, error is less than ±0.25 dB at any step
  • Accuracy, 100-dB Section: From dc to 100 kHz, error is less than ±0.25 dB at any step up to 70 dB, less than ±0.5 dB above 70 dB; from 100 kHz to 1 MHz, error is less than ±0.5 dB at any step up to 70 dB; less than ±0.75 dB above 70 dB.
  • Power Capacity: In 600 ohms: 5 watts (55 Vdc or rms) maximum continuous duty
  • Dimensions: 6-3/32 in. high, 5-1/8 in. wide, 8 in. deep

The Agilent 350D is an accurate, wide frequency range attenuator which provides attenuation from 0 dB to a maximum of 110 dB. The Model 350D will dissipate a maximum of 5 watts in continuous use with good accuracy from dc to1 MHz. The Model 350D consists of two sections: (1) 100 dB adjustable in 10 dB-steps, and (2) 10 dB, adjustable in 1-dB steps. The two sections are additive, allowing attenuation in 1-dB or 10-dB increments over the full 110-dB range. A floating input is included which isolates the attenuator circuit ground from cabinet ground, allowing an ac input to be a dc level.

The modular enclosure design allows convenient conversion from a bench model to a model which mounts in a standard 19-inch rack. The modular design provides the mechanical stability necessary for stacking instruments on a flat surface.

Wide frequency range, high power dissipation capability, and accuracy make the Model 350D useful in such applications as attenuating an oscillator output, checking gain and frequency response of an amplifier, and determining transmission loss. Use of the Model 350D is possible with a mismatched load or source impedance.

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