The Trimble Thunderbolt® PTP Grandmaster Clock is designed for the telecom market, for use at the edge of wireless networks requiring phase synchronization. The GM200 provides continuous availability of UTC traceable time for phase synchronization, a must for LTE-Advanced networks and services.

The Thunderbolt PTP GM200 employs industry-leading Trimble GNSS performance, and world class holdover technology.

The PTP GM200 tolerates harsh environmental conditions, supporting both indoors and outdoors deployments with an extended operating temperature range (-40 to +85 C).

The Thunderbolt PTP GM200 supports small cells networks that require phase synchronization. Although it is designed with keeping small cells in mind, it meets Marco base station requirements for synchronization.

Due to the Trimble GM200’s small size, low cost, superior accuracy, reliability and flexibility of deployment options, the risk of network re-configuration and load variance on IEEE-1588 signal quality is reduced.

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Thunderbolt® PTP Grandmaster Clock GM200
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Key Features & Benefits

Key Features

  • IEEE-1588 PTP Grandmaster Clock
    • Multiple PTP Profiles(G.8265.1, G.8275.1, G.8275.2,Telecom-2008 Profile, SMPTE – Broadcast Profile)
    • Supports 16 PTP unicast clients @ 128pkt/s
  • Multi-Constellation (GPS, GLONASS, Beidou & Galileo)
  • ±15ns (1-sigma) time accuracy relative to GNSS reference
  • Holdover of ±1.5us over 4hours (constant temperature and when locked to GPS for 7 days)
  • Inputs: GNSS, 1588-PTP and SyncE
  • Outputs: 1588-PTP, NTP, SyncE, PPS,and 10MHz
  • Dedicated management port (1xRJ45)
  • Network Management: SNMP, Web UI, CLI
  • VLAN support
  • IPv4 and IPv6


  • Low cost reduces CAPEX of LTE TDD, LTE-A & small cell projects
  • Extended environmental capabilities enable deployment in difficult locations where small cells and LTE-A base stations are deployed
  • Superior holdover performance via Trimble proprietary technology gives extra time error budget for network design and dimensioning

Parts & Accessories

Part Number
Thunderbolt PTP GM200 Grand Master
GMC Antenna Kit
Bullet 360 Antenna 5V TNC
Surge Protector - 800MHz to 2500MHz
Power Adapter - 110/220VAC to -48VDC
Cable - 75' TNC (m) to TMC (m)
Cable - 12' TNC (m) to SMA (m)
Antenna Pole and Mount

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