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LEA-M8F time & frequency reference breakout board
  • LEA-M8F time & frequency reference breakout board
  • EAN-4751046550191 (LEA-M8F time & frequency reference breakout board)

LEA-M8F time & frequency reference breakout board

ELT0019

LEA-M8F time & frequency reference GPS/QZSS, GLONASS, BeiDou breakout board

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This product comes with 1 years worldwide warranty

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Description

LEA-M8F GPS, Glonass, Beidou breakout board with time & frequency reference description

This time and frequency products provide multi-GNSS synchronization for cost-sensitive network edge equipment including Small Cell and Femto wireless base-stations. The LEA-M8F module is a fully self-contained phase and frequency reference based on GNSS, but can also be used as part of a complete timing sub-system including macro-sniff Synchronous Ethernet and packet timing.

The LEA-M8F module includes a low-noise 30.72 MHz VCTCXO meeting the master reference requirements for LTE Small Cells and provides 100 ppb autonomous hold-over. The LEA-M8F module can also measure and control an external TCXO or OCXO for TD-LTE, LTE Advanced and other applications requiring extended hold-over. External sources of synchronization are supported through time-pulse and frequency inputs and a message interface.

This allows measurements from macro-sniff, Sync-E or packet timing to be combined with measurements from GNSS. u-blox time and frequency products include timing integrity alarms that report phase and frequency uncertainty both during normal operation and hold-over. They feature a high dynamic range radio with both analog and digital interference mitigation supporting their inclusion as an integral part of a local area base station design.

LEA-M8F Highlights

  • Reception of GPS, QZSS, GLONASS, BeiDou
  • Integral low phase-noise 30.72 MHz system reference oscillator disciplined by GNSS
  • Accurate measurement and control of external oscillators
  • High sensitivity acquisition and single-satellite timing
  • Automatic hold-over
  • Prepared for integration with external PTP, Sync-E and network listen
  • u-center u-blox Evaluation Software

LEA-M8F Features

Frequency output: 30.72 MHz disciplined

Phase noise:

    • 10 Hz: –90 dBc/Hz
    • 10 kHz: –147 dBc/Hz
    • 100 Hz: –126 dBc/Hz
    • 100 kHz: –153 dBc/Hz
    • 1 kHz: –140 dBc/Hz
    • 1 MHz: –156 dBc/Hz

Jitter (100 Hz - 1 MHz): 0.15 ps

EVM (100 Hz - 1 MHz @ 2100 MHz): < 0.2%

Frequency control (internal oscillator)

    • GNSS locked: 5 ppb
    • Hold-over: 100 ppb, 24 hr

Frequency control (external oscillator)

    • Resolution: <5 ppb
    • Frequencies: 19.2, 20, 26, 30.72 MHz
    • Hold-over: Determined by external oscillator

Phase control

    • Clear sky: < 20 ns
    • Indoor: < 500 ns typ.

Time-pulse input Resolution: <50ns

Time-pulse output Jitter: <2ns

u-blox M8 positioning engine:

    • 72-channel u-blox M8 engine
    • GPS/QZSS L1 C/A, GLONASS L10F, BeiDou B1
    • SBAS L1 C/A: WAAS, EGNOS, MSAS
    • Galileo-ready E1B/C (external Flash required)

A-GPS: AssistNow Online and AssistNow Offline services, OMA SUPL and 3GPP compliant

Accuracy

    • GPS 2.5 m CEP
    • GLONASS: < 4 m CEP

Acquisition

    • Cold starts: GPS 26 s, GLONASS 30 s
    • Hot/Aided starts: GPS 1 s, GLONASS 3 s

Sensitivity

    • Tracking: GPS –167 dBm, GLONASS –158 dBm
    • Cold start
      • (aided): GPS –155 dBm, GLONASS –138 dBm
      • (autonomous): GPS –148 dBm, GLONASS –138 dBm
    • Reacquisition: –160 dBm

  • Assistance: AssistNow Online
  • OMA SUPL & 3GPP compliant interface
  • LNA: Built-In
  • Internal oscillator: VCTCXO
  • Anti jamming: Active CW detection and removal
  • Supported antennas: Active and passive
  • Internal SQI Flash: For firmware update
  • Onboard UF.L antenna connector

LEA-M8F (timing) Product Summary

LEA-M8F (timing) Data Sheet

LEA-M8F (timing) Hardware Integration Manual

Product Details
ELT0019
4751046550191
ELT0019
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