GMR5000 Master Clock

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The GMR5000 is a master clock that can reference a variety of timing sources and provide a range of outputs including NTP, PTP, SMPTE, and IRIG-B.  The internal modular design allows the unit to be factory-configured per the user’s requirements. The base model includes both NTP server and client functionality compatible with IPv4/IPv6 networks and offers AES 256 SSH encryption for secure communications. Optionally, the device can act as a IEEE1588v2 PTP grandmaster or slave clock, time code generator, NENA time server, frequency generator and more. Optionally, an OCXO or Rubidium oscillator enhances holdover stability to minimize timing drift.


Specifications

Inputs/Reference Sources

Base Model

  • NTP client with 10/100 Mb Ethernet (Dual-port)

  • NMEA 0183 via RS-232 or RS-422/485

  • NENA Format 0, 1 and 8 via RS-232 or RS-422/485

Options

  • GPS or GPS/GLONASS receiver options

  • Time Code

    • SMPTE 24fps (Film), 25fps (EBU), 30fps and 29.97 drop frame

    • IRIG-B0 (DCLS) and IRIG-B1 (AM)

    • IRIG-A0 (DCLS) and IRIG-A1 (AM)

    • IRIG-E0 (DCLS) and IRIG-E1 (AM)

  • Synchronizing signals: PPS, PPM, PPH

  • IEEE 1588 Precision Time Protocol

  • 10 MHZ Input (CMOS or Sinusoidal)

Outputs

Base Model

  • NTP server with 10/100 Mb Ethernet (Dual-port)

  • NMEA 0183 via RS-232 or RS-422/485

  • NENA Format 0, 1 and 8 via RS-232 or RS-422/485

  • 5V at 100mA Pulse Per Second (PPS)

Options

  • Time Code

    • SMPTE 24fps (Film), 25fps (EBU), 30fps and 29.97 drop frame

    • IRIG-B0 (DCLS) and IRIG-B1 (AM)

    • IRIG-A0 (DCLS) and IRIG-A1 (AM)

    • IRIG-E0 (DCLS) and IRIG-E1 (AM)

  • 5V at 100mA Programmable Pulse Output (PPO)

  • IEEE 1588 Precision Time Protocol

  • 10 MHZ Output (Sinusoidal)

 

Other Features

  • IPv4 and IPv6 compatible

  • SSH secure communication

  • SNMP with Masterclock MIB

  • MD5 authentication

  • Internal TCXO maintains time during loss of external sync within ± 3 seconds/year

Other Options

  • 13-Digit display (Date/Time or Day of year/Time)

  • Programmable relay closure, one event per day with SPDT dry contact relay

  • Optical Fiber LAN

High-Stability Oscillator Options

  • Internal high-stability OCXO oscillator ± 0.25 sec/year

  • Rubidium ooscillator ±1 mS/year

Power, Physical Dimensions, Operating Parameters

  • AC input (90-264VAC, 47-63Hz)

  • 18.9w x 1.750h x 5.174d in (48w x 4.445h x 13.14d) cm

  • Temperature: 0 to +60°C (32 to +140°F)

  • Humidity: up to 90%, non-condensing