Spirent Upgrades An Existing Sentinel (w/ S/n 300xxx) W/ One 100m, 1gbe & 10gb Ethernet Interface (sfp/sfp+, Rj45). Synce Clock Rx/tx, Esmc Rx/tx. Inlcudes Synce Measurement Capability Up To 10gb Line Rate (electrical Or Optical) Please Note: Option 654...