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Gen 3.1 & 3.2
Gen 3.1 & 3.2
  • Introduction
  • Kayak
    • Assemble your power meter
    • Configure your power meter
      • Blade tip to hand distances
      • Blade tip to blade tip distance
      • Blade twist
      • Blade type attached to shaft
      • Left blade tip to LED distance
  • Canoe/Dragon Boat/SUP
    • Assemble your power meter (Gen 3.1)
    • Assemble your power meter (Gen 3.2)
    • Configure your power meter
      • Blade tip to hand distances
      • Blade type attached to shaft
      • Blade tip to LED distance
      • Shaft to handle offset distance
  • General
    • Battery Charging
    • Clamp Adjustment
    • Web Bluetooth App
    • Zero Offset Calibration
      • How to perform a Zero Offset calibration
    • Scale Factor Calibration
      • N channel Scale Factor calibration
      • O channel Scale Factor calibration
    • Updating Firmware
      • How to update the power meter firmware using the Web Browser
      • Latest firmware version
    • Real-time Data
      • How to pair with your device
    • High Speed Data
      • How to start/stop recording High Speed Data
      • How to download High Speed Data (ANT)
      • How to download High Speed Data (Automatic Script) - Experimental
      • How to view High Speed Data
    • Deep Sleep
    • GPS Sync Box
    • Metrics
      • Power
      • Force
    • Upgrade Description
    • Manufacturer's Warranty
    • Troubleshooting
      • High Speed Data Recording Fault
    • Shaft & Blade Sizing
    • Connections using hot melt glue
  • Training Guide
    • Functional Threshold Power
    • Power Zones
    • Fitness Tracking
    • Optimum Cadence
    • Technique Efficiency
    • Training to improve 30 second or 1 minute Power
    • Training to improve 4 minute Power
    • Training to improve Functional Threshold Power
    • Training to improve Endurance
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  • For what length of time will the sync remain valid?
  • How often will the power meter search for a sync?
  1. General

GPS Sync Box

For what length of time will the sync remain valid?

Located inside every power meter is a Real Time Clock (RTC) which accurately keeps tracks of Coordinated Universal Time (UTC) since the last sync took place with a GPS Sync Box.

The RTC is accurate to ±0.432 Second/Day over the entire temperature range from -45°C to +85°C. In other words, the RTC will drift no more than ±0.432 over the course of 24 hours, even if the temperature varies significantly throughout the day.

We have defined it such that a sync will be considered expired if 6 hours or more have elapsed since that sync occurred. This equates to a worse case drift of ±0.108 seconds which closely lines up with the 100Hz High Speed Data sampling period of 0.100 seconds.

How often will the power meter search for a sync?

Searching for an active GPS Sync Box consumes power, so we want to limit the time the power meter spends searching for one. If the power doesn't currently have a valid sync, then it will start search more frequently - more specifically, the power meter will begin a short search (for 5 seconds) every 60 seconds.

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Last updated 1 year ago