Check the listing for details. Agilent Hewlett Packard HP Keysight 11713A Attenuator / Switch Driver. Condition: Used. Listed at 99.00 USD. HP / Keysight 11713A Attenuator/Switch Driver The 11713A is capable of driving up to ten switch or attenuator sections. It drives with steady-state 24 Vdc and is compatible with any switch or attenuator that requires +24 Vdc common, with ground for individual line activations. Switch and attenuator control can be accomplished manually from the front panel push-buttons or automatically over the GPIB interface bus. For applications requiring more than ten pairs of drive lines, multiple 11713A may be used. The 11713A attenuator/switch driver provides GPIB or "local" front panel drive control for programmable attenuators and electromechanical switches. Concurrently drive up to two Agilent 8494/5/6/7, Agilent 84904/6/7K/L programmable attenuators and two electromechanical switches (Agilent 8761, 8762, or 8765 series). The Agilent 11713A can also be used to supply +24 V common and ten pairs of current sinking contacts (total current draw less than 1.3A peak for 1 second, 0.65A steady state) to independently control up to 10 relays. An integral power supply with short circuit protection eliminates the need for an external power source. Switching time is less than 10 milliseconds. The item is in good condition, tested and working.