Ladder Type Stepped Attenuators This attenuator is formed by 2 resistors and 2 switch contacts per step, making up a unique combination of resistors per step. Their function is to add up the impedance of the stepped attenuator. That forms a high quality of voltage divider network. Each resistor set has an equal total series of resistance; therefore, the impedance of the signal source can always be the same. > 10 000 cycles. CNC machined AL6063 aluminum. All our products have been checked and packed in good condition. We will do our best to resolve the issues for you. Attention to all Intellectual Property Rights Owners. We are willing to comply with your policy and remove any offending listing.