SYNC4 Synchronization Hub
Twinleaf devices can be synchronized by distributing a clock to the sensors. The clock is distributed on a dedicated pair of wires using low voltage differential signaling (LVDS). Using the sync-in port, multiple SYNC devices can be chained to form arbitrarily large synchronized systems. With the internal GPS module, the system can synchronize a sensor using GPS time. The unit also makes a good logging system thanks to the microSD card socket.
- Synchronize 4 sensors (each port supplies sensor power, serial data, sync clock)
- ±3 ppb master oscillator stability over temperature range
- Operating temperature: −20 °C – +70 °C
- GPS module option for position and global time synchronization (±10 ppb stability)
- GPS high performance amplified antenna included
- Volume: 31×34×65 mm³
- Power consumption: 710 mW with GPS; 300 mW GPS off
- Mass: 45 g
- USB control port
- microSD card for logging data
- Power Input (JST PA)
- Power +5–15V
- 4 sensor ports
- 1 upstream control port
- LVTTL Serial control port (JST GH)
- Power +5V
- Serial TX (3.3V)
- Serial RX (3.3V)
- 1PPS input (3.3V)
- GPS antenna (SMA)
- Supplies diltered power for amplified antennas
- Software support
The light blinks according to the system status.
|0b01000||Blue/*||GPS time locked|
|0b10000||*/Red||Logging to SD card|
The colors can combine in sequence to reflect combined state. For example, alternating blue/red blinking indicates the GPS time is locked and the system is logging to SD card.
- R7: 2021-05-25-cd6687 improves SD card operation, recovery from write errors.
- R7: 2021-05-04-b7eed4 improves GPS time synchronization reliability.
- R6: 2020-07-10-0e54ca enables the external GPS input connector with the command
- R6: 2020-06-10-8f16d8 logs the GPS data stream to the microSD card.