Datasheet

Page 9

Web: www.maxbotix.com

PD11500c

MaxBotix

Inc.

Patent 7,679,996

HRXL-MaxSonar

WR/WRC

™

Series

MaxBotix Inc., products are engineered and assembled in the USA.

Operations and Timing Continued

Real-Time Operation - Triggered (MB7369, MB7389)

Real-time or triggered operation allows users to take advantage of a few functions unavailable during free run mode.

When operating in triggered mode, an unfiltered maximum refresh rate of 6.67Hz can be achieved. This triggered

operation allows users to range targets moving away from or closer to the sensor faster than 240mm/s.

Users can enter and remain in the Real-time or Triggered Operation by making sure that after each range cycle, the

voltage level on Pin 4 is set low. After the sensor has completed the last reading, then the voltage on Pin 4 is brought high.

This starts a brand new range cycle and the HRXL-MaxSonar-WRM (MB7369 or MB7389) will output the most recent

range data without filtering. Please reference the Real-time Triggered Operation timing diagram for full implementation

details.

Readings during triggered operation are less accurate than the filtered operation by approximately +/- 5-mm. Also,

because the range readings are not filtered, noise tolerance can be greatly reduced. Care should be taken to make sure that

only one sensor is sampling range at a time.