33300 series step attenuators provide wideband programmable signal level control. Magnetic latching solenoids switch indiviadual attenuationg elements into and out of contact with a 50-ohm transmission line. C/D models have separate indicator contacts and A/B models have no indicator contacts. Three three-digit connector options (0XY) must be specified. X is the input connector, Y is the output connector, first digit is always 0.