Data Sheet

Page 10
Web: www.maxbotix.com
PD11500Y
MaxBotix
®
Inc.
Copyright 2005 - 2012 MaxBotix Incorporated
Patent 7,679,996
HRXL-MaxSonar
®
- WR/WRC
™
Series
MaxBotix Inc., products are engineered and assembled in the USA.
Sensor Timing Diagrams Cont.
Triggered—Real-time Operation Timing
Pulse Width data sent (Colum A) - Column A shows the approximate time that the sensor starts to output the pulse
width data. The Pulse Width output time can be as short as 300uS (minimum reported distance). For 5 meter sensors, the
pulse width can take as long as 5000uS (maximum reported distance) to be sent. For 10 meter sensors the Pulse Width
can take as long as 9999uS (maximum reported distance) to be sent.
Serial data sent (Colum B) - Column B shows the approximate time during each range cycle when the serial data is
output for the sensor. Range data takes ~8mS to be reported from the serial data output.
RX Pin set low (Column C) - When operating the HRXL-MaxSonar-WR in Triggered Operation, Pin 4 is must be
brought high for a time frame greater than 20uS (0.02mS) and less than the time in Column C in the chart above. If Pin 4
remains high for a period of time greater than the value in Column C, the sensor will switch into free-run filter operation.
End of Range Cycle (Colum D) - Column D shows the approximate time each range cycle takes to complete for each
sensor.
Product
Maximum
Refresh
Rate
Pulse
Width
sent
(A)
Serial
Data sent
(B)
RX Pin
set low
(C)
End of
range
cycle
(D)
MB7360, MB7367, MB7380, MB7387 7.5 Hz ~118mS ~123mS ~132mS ~133mS
MB7369 and MB7389 6.67Hz ~135mS ~140mS ~147mS ~148mS
MB7363, MB7366, MB7383, MB7386 6Hz ~148mS ~158mS ~165mS ~166mS
MB7368 and MB7388 5.17Hz ~163mS ~173mS ~180mS ~181mS
MB7375 and MB7395 6.33Hz ~148mS ~150mS ~157mS ~158mS
Power up timing has
already occurred