Each distribution module has one input and 12 buffered outputs plus an alarm relay to signal a missing input signal or an internal error. The SDU-FO chassis fits in 19″ racks and is available with both AC and DC power supply options.
The alarm relay contact and the status LEDs in the front panel indicate to the operator whether an input signal or an internal error has been detected that could affect the output signal.
The SDU / FO base chassis equipped with one or two distribution modules is ready to amplify and distribute TTL-level signals such as 1PPS, 10MHz and unmodulated IRIG time code. An option is available for a TTL signal input instead of the FO input.