Agilent / HP 8491C

The Agilent 8491C is a DC coaxial fixed attenuator.

The 8491C provides precision attenuation, flat frequency response, and low SWR over broad frequency range. The attenuator is available in nominal attenuations of 3 dB and 6 dB, also 10 dB increments from 10 dB to 30 dB. This attenuator is swept-frequency tested to make sure that they meet specifications at all frequencies. The calibration points are on a nameplate chart that is attached to each unit.