GENERAL
4-20 / Controls, Indicators, and Features
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4-9. Vehicle Data Recorder (VDR)
Most Pierce apparatus are equipped with a Vehicle Data Recorder (VDR). The VDR is capable of reading and
storing the most recent 100 hours of vehicle information. The VDR is capable of operating in a voltage range from
8VDC to 16VDC and will continue operation upon termination of power or at voltages below 8VDC for a minimum
of 10ms. The VDR will not interfere with, suspend, or delay any communications that may exist on the CAN data link
during the power up, initialization, runtime, or power down sequence.
The vehicle data recorder is capable of recording the following data via hard-wired and/or CAN inputs:
• Vehicle Speed - MPH
• Acceleration - MPH/sec
• Deceleration - MPH/sec
• Engine Speed - RPM
• Engine Throttle Position - % of Full Throttle
• ABS Event- On/Off
• Seat Occupied Status - Yes/No by Position (1-6 Seating Capacity)
• Seat Belt Buckled Status - Yes/No by Position (1-6 Seating Capacity)
• Master Optical Warning Device Switch - On/Off
• Time - 24 Hour Time
• Date - Year/Month/Date
Stored VDR data can be downloaded and viewed using a laptop computer and the vendor’s vehicle data recorder
software; the software is provided with your vehicle on a CD-ROM.
The VDR software contains three different applications. The purpose of each application is explained below:
• VDR Configuration Tool. This application is used to name individual VDR modules, change the password
required to access data, and synchronize the clock (if necessary). The ability to name individual VDRs permits
customers to give each VDR a unique name. This beneficial for customers whose vehicle fleet contain several
vehicles equipped with VDRs.
• VDR Extraction Tool. This application is used to download data from the vehicle's VDR to a laptop computer.
Once downloaded, the data is viewed using the Viewer Tool.
• VDR Viewer Tool. This application is used to view and manipulate the downloaded VDR data.
Refer to the vehicle service manual for further information on the VDR system and instructions to use the software.
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