ug123UG123: SiOCXO1-EVB Evaluation Board User's Guide The Silicon Labs SiOCXO1-EVB (kit) is used to help evaluate Silicon Labs Precision Jitter AttenuationFrequency Translation productUG-123 from Bimba at RS. Description. Cylinder, Ultran Rodless Gold Coupling Strength; 1-14In Bore 12; Stroke: 3