EIVA Releases Accurate Time Tagging Unit

EIVA has released the Accurate Time Tagging Unit (ATTU), the successor of the EIVA TimeBox. The EIVA ATTU is a time-synchronied interface unit for precise time tagging of serial communication data from any sensor used in marine surveys. The ATTU thus facilitates time tagging of sensor data with accuracy better than 50microsec. 

This accuracy is obtained through interface with GPS PPS signal information and sophisticated application of Kalman filtering techniques to stabilise the internal clock of the ATTU. As the ATTU is synchronised through use of GPS the performance and accuracy is dependent on the availability and quality of the GPS PPS signal.

 

The ATTU features either 8, 16 or 24 ports serial RS232 communications utilizing RJ45 connections. Optionally the ATTU furthermore provides for selection of each individual port from serial RS232, RS422 or RS485 communications, if required.