The HP/ Agilent 8956A is a used System Interface, with its multiple paths and connections, provides added flexibility in the designing of systems in the frequency range from dc to 1GHz. The HP Agilent 8956A has two RF test ports for deplex testing, stimulus/response testing, and reduced connect/disconnect times. A built-in switchable 120 watt 30 dB attenuator can be inserted for transmitted and removed for receiver testing, increasing receiver measurement range. Additional functions include current drain and timing measurements.