2.3-inch (5.8 cm) Multi-Network Digital Display

The MDN multi-functional digital display syncs to an internal or external NTP (Network Time Protocol) source for accurate, USNO legally traceable time. Alternatively, the MDN can be remotely programmed to sync to and display IRIG B or choose to auto detect and display varieties of IRIG analog (CS3) and digital (CS5)  countdown time codes or planned times that can be received by cable or from an almost unlimited choice of counts available by Ethernet by using Masterclock CS5 Ethernet injectors.


  • 2.3 inch (5.8 cm) LED digits  in red, green, blue, or amber
  • Supports CS5, CS3, IRIG-B1, NTP
  • Fully configurable via Windiscovery software, Telnet, or SSH
  • Configurable time zone and daylight saving time offsets
  • Configuration is saved to non-volatile memory and survives power losses
  • Display time in 12 or 24 hr format – hh:mm:ss
  • Display hundredths of second
  • Adjustable brightness levels
  • Visibility: 100 feet (30 meters)
  • Dry contact relay option
  • PM indicatior


Holdover Accuracy

  • With loss of power, device reverts to an internal battery-backed real-time clock chip with accuracy of ± 1min/year or < 165ms per day

Network Compatibility

  • Supports NTP, DHCPv4, DHCPv6 for automatic acquisition of network address, name servers, and timeserver configuration
  • Supported network protocols: Telnet/SSH
  • SNMP with custom MIB


  • RJ45 for TCP/IP, IRIG-CS-3 or IRIG-CS-5246 
  • BNC for IRIG-B1 or IRIG-CS-3 
  • USB for configuration 
  • IEC AC Power



  • International 115/230, 50/60 Hz
  • Power consumption < 15W

Operating Parameters

  • Temperature: 0 to 60°C
  • Humidity: Up to 90% (non-condensing)


  • Black powder-coated steel chassis
  • Size: 22.25w x 3.6h x 2.25d in (56.5w x 9.14h x 5.7d cm)
  • Weight: 4.6 lb (2.08 kg)


  • FCC, CE Marked, ROHS, ANSI