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  • Comtech EF Data SMS-451 1:1 Protection Switch

Comtech EF Data SMS-451 1:1 Protection Switch

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  • 1:1 Configuration
  • Simultaneously switches Data and IF
  • Front Panel or remote control of functions
  • Simple installation


General Specifications
Data InterfaceG.703
OptionsASI, HSSI (<52 Mbit/s)
Operation ModesAuto/Manual, Local/Remote
Power90 to 264 VAC, 10W max.
Size19 inch W x 18 inch D x 3.5 inch H (2 RU)

(48.2 x 45.7 x 8.9 cm)
Weight10 lbs. (4.53 kg)
ModulatorA/B online select or auto
DemodulatorA/B online select or auto
Power Supplies1/2 ON
Remote ControlRemote/Local mode
ModulatorA/B online, A/B fault
DemodulatorA/B online, A/B fault
Monitor and Control
Remote MonitorForm C contacts provided on 25-pin D

connector for A/B online modulator

indicator, A/B online demodulator indicator,

and local/remote mode
Remote ControlVia external contact closure for A/B select

modulator and A/B select demodulator

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