Check the listing for details. EG&G ORTEC 542 LINEAR GATE STRETCHER- fully functional- . Condition: Used. Listed at 228.98 USD. ORTEC 542 LINEAR GATE STRETCHER. It may have some cosmetic issues but it is fully functional.-- For passing and blocking analog signals in the range from +0.1 to +10 VUngated or gated with coincidence or anticoincidence gatingStrobed linear output with internal or external strobeAdjustable output delay and widthThe ORTEC Model 542 Linear Gate and Stretcher accepts a linear input pulse through an input linear gate, stretches the peak amplitude of the input pulse, and generates an output pulse with amplitude equal to the input, and shaped to a uniform rise time and width. It is useful for selecting and inhibiting linear signals according to chosen coincidence or timing conditions. The Model 542 features excellent temperature stability, integral linearity, response to high counting rates, and simplicity of operation. In addition, the Linear Gate section features total dc-coupling with essentially zero pedestal and feedthrough. https://www.ortec-online.com/products/electronics/delays-gates-and-logic-modules/542