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VC4000DAQ Manual 

 

 
Check to see that the following items are supplied with your VC4000: 

1  VC4000 with single cup mounting assembly 
1  Power cord (to cigarette lighter) 
1  AC wall adapter 
1  USB interface cable 
1  6 port analog input junction box 
1  OBDII CAN interface cable 
1 VC4000 

manual 

1 Profile 

manual 

1 Profile 

CD 

1 Carrying 

case 

 
Optional Accessories: 

  RS232/Analog out splitter 

  RS232 (ports 2-3) splitter 

  Tachometer/CAN/digital in splitter 

 GPS 

input 

 OBDII 

input 

 Tachometer 

interfaces 

 Activation 

switches 

  Reaction time switches 

  Analog sensors (see web site for most current list) 

  Portable thermal micro printer 

  Variety of mounting bases 

  Two cup mounting system 

  Extra carrying case 

What it comes with 

 

 

Operations Basics 

VC4000DAQ Manual 

 

2. OPERATION BASICS 

 

 
 
 

This section will give you basic operating 
procedures for the VC4000DAQ. 

 

 
 

 

 
The VC4000 does not have to be level to get accurate results.  It 
uses a 3 axis accelerometer and calculates the 

vector sum

 of all 3 

axes to calculate G force, speed and distance.  G “Summation 3D 
(XYZ)” must be on in Setup.  It is 

on

 by default.  See page 86 for 

details.  Mount the VC4000 so the display is roughly facing the back 
of the vehicle, or so the X-axis is roughly along the front to back line 
of the vehicle. 

Figure 1: Single mount on windshield 

 

 

Mounting 

Summary of Contents for VC4000DAQ

Page 1: ...Brake Performance 20 Measuring Coefficient of Friction 21 Light Impact Testing 23 Measuring slope 26 Avoiding False Triggering 28 Acceleration Testing 28 4 TRANSIT USE 32 Initial Setup 32 Get VC4000 R...

Page 2: ...ff 92 Tachometer On Off 92 Tach Factors 92 Maintenance 93 Unit Information 93 Run Tests 93 Discharge Battery 93 8 SENSOR INPUT 94 Internal Sensors 95 Compass 95 Rate Gyro 95 Tachometers 95 Digital IN...

Page 3: ...Bluetooth wireless communication OBDII input compatible CAN or RS232 12 analog sensor input Analog output of sensor or tachometer 4 tachometer inputs 2 extra digital inputs event markers Compass for...

Page 4: ...rs see web site for most current list Portable thermal micro printer Variety of mounting bases Two cup mounting system Extra carrying case What it comes with Operations Basics VC4000DAQ Manual 4 2 OPE...

Page 5: ...Other mounting accessories are available See our web site for details Alternatively the VC4000 can be mounted more rigidly by using a two suction cup kit with brackets attached to the sides of the uni...

Page 6: ...idental shorting or reverse polarity of sensors or power input If a sensor draws too much current it will shut the power off to the unit Sometimes when a sensor is plugged in when the VC4000 power is...

Page 7: ...l the cursor left display a G Force graph or display detailed G Force data for an acceleration run RPM 8 Enter the numeric 8 display an RPM graph or display detailed RPM data for an acceleration run S...

Page 8: ...ero adjust itself 5 Press the Auto Start key 6 Accelerate up to target speed 7 Apply the brakes hard and fast and come to a complete stop 8 Use the arrow keys to scroll through the data For further de...

Page 9: ...instructions on how to use the VC4000 in accident reconstruction User Type When you first receive your VC4000 the User Type will be set General which displays all available data You should change thi...

Page 10: ...lating the vector sum In fact using the Z axis may introduce some error due to vertical vibration caused from the road surface Either use X or X Y summation if mounting flat and level Use the bubble l...

Page 11: ...get back to the READY screen Or use Profile to change the setup in the VC4000 from your PC 1 Start the Profile program 2 Connect the VC4000 to your computer 3 Turn on the VC4000 4 In Profile Click on...

Page 12: ...speed After reaching the desired initial braking speed hit the brakes PUSH AUTO START Measuring Drag Factor Accident Recon Use VC4000DAQ Manual 20 hard and fast applying maximum brake pedal pressure u...

Page 13: ...hing the desired initial braking speed hit the brakes PUSH AUTO START Measuring Coefficient of Friction Accident Recon Use VC4000DAQ Manual 22 hard and fast applying maximum brake pedal pressure until...

Page 14: ...press ENTER YES 6 Scroll to Sample Rate and press ENTER YES 7 Choose 500 or 1000Hz and press ENTER YES 8 Press CLEAR NO twice to get back to the READY screen Or use Profile to change the accelerometer...

Page 15: ...isplay the run number being saved and then display SAVE IN FILE MEMORY DEPRESS YES or NO PUSH AUTO START Accident Recon Use VC4000DAQ Manual 26 4 Press the Auto Start key The VC4000 will display Auto...

Page 16: ...ates by more than the default 0 200G threshold when shifting or lifting from the accelerator to avoid false triggering of your braking run you may press the Auto Start key any time after zero adjustin...

Page 17: ...he vehicle at a complete stop The VC4000 will zero adjust the accelerometers and applicable sensors show the available record time in seconds display the run number being saved and then display 0 30 m...

Page 18: ...the typical transit vehicle brake test To change the User Type to Transit follow these steps 1 Press the Tools key 2 Scroll to Setup and press ENTER YES 3 Scroll down to User Type and press ENTER YES...

Page 19: ...roughly along the front to back line of the vehicle Figure 10 Single mount on windshield Alternatively mount the VC4000 flat and level using the single suction cup mount or the dual bracket option wi...

Page 20: ...r more details The VC4000DAQ includes an SD flash memory card to store run data onto To transfer runs onto the SD flash memory card follow these steps 1 From the READY screen press the Tools key 2 Scr...

Page 21: ...key again to scroll through multiple graphs such as G Force or Sensor While reviewing the data after a braking test if the braking key is pressed the VC4000 will start a new braking test using the zer...

Page 22: ...2 Scroll to Setup and press ENTER YES 3 Scroll down to Sensors and press ENTER YES 4 Choose the sensor you want to record and press ENTER YES 5 See Setup Sensors on page 77 for details on each sensor...

Page 23: ...n number being saved and then display PUSH AUTO START Testing Brake Performance Engineering Use VC4000DAQ Manual 42 4 Press the Auto Start key The VC4000 will display Auto Start Ready and the current...

Page 24: ...art 1 4 mile 3 From the READY screen press the 1 Acceleration key with the vehicle at a complete stop The VC4000 will zero adjust the Acceleration Testing Engineering Use VC4000DAQ Manual 44 accelerom...

Page 25: ...points reached waypoints during the test QuickSet Accel Run 1 4 mile 8 90 sec 170 0 mph Gx 0 38 Avg Gx 0 88 Accel Display 4 Engineering Use VC4000DAQ Manual 46 Data from the Vericom VC4000 QuickData D...

Page 26: ...ital inputs On or Off See section 6 TOOLS Monitor Data on page 49 for details Tools VC4000DAQ Manual 48 6 TOOLS This section explains the available tools in the VC4000 The VC4000 has several tools ava...

Page 27: ...axis peaks 4 Tachometers peaks 12 Analog sensors OBDII Sensors GPS speed location and altitude Rate Gyro yaw rate in Deg Sec Compass heading in Degrees 2 Digital inputs On or Off Some sensors have to...

Page 28: ...002 Monitor G Mode Pk 0 000 Gx 0 001 Gy 0 001 Monitor G Mode Pk X 0 002 X 0 004 Pk Y 0 003 X 0 001 Gz 0 000 Pk Z 0 035 X 0 021 Tools VC4000DAQ Manual 52 2 2 2 Gz Gy Gx G Note that when tilting the VC...

Page 29: ...to turn it on The display will show the rotation rate in Degrees per second Rotating counterclockwise is negative and clockwise is positive Speed 0 000 Lat 45 12 84734 N Long 93 32 97201 W Valid 2 Sat...

Page 30: ...turned on using Setup The VC4000 stores the file as a monitor mode file so when importing to profile it will be an acceleration test not a braking test Crash Mode Tools VC4000DAQ Manual 56 Start Cras...

Page 31: ...square or other right angle to prop against the bottom to keep the bottom perpendicular to the surface Hold it there until the unit beeps Tools VC4000DAQ Manual 58 Figure 18 Calibration check on righ...

Page 32: ...00DAQ Manual 60 The data printed will be the summary information such as Time Speed Distance Average G and Peak G along with a graph of the acceleration vs time Connect the printer to one of the RS232...

Page 33: ...c Press CLEAR NO 3 times to get back to the Tools menu 3 Scroll down to Compass Calibration and press ENTER YES 4 Drive the vehicle in 2 or more complete tight circles 5 Press a key to stop the calibr...

Page 34: ...the SD Card 1 Select SD Card Options and press ENTER YES 2 Select Erase SD Card and press ENTER YES 3 Press ENTER YES twice to confirm erasure The VC4000 stores the data on the SD Card with the file...

Page 35: ...d to be turned on or off Following is a flowchart to help you navigate to the setting you may want to change All of these settings can be changed using Profile software as well and will be easier usin...

Page 36: ...old OBDII PIDS ON OFF OBDII PIDS All OFF OBDII Delay OBDII Port Tach x 1 99 Analog Out GPS Sensors OFF Long Accel Gx Lat Accel Gy Vert Accel Gz G Summation TACH 1 TACH 2 TACH 3 TACH 4 Rate Gyro Compas...

Page 37: ...on the thermal printer and will also display in the vehicle field when imported to Profile To set Vehicle ID 1 Select Vehicle ID from the Setup menu 2 Type in the new ID using the keypad 3 Press ENTE...

Page 38: ...Manual 72 Figure 27 Vehicle axes The VC4000 is affected slightly by the tilt of the car caused by suspension shifts under acceleration or deceleration This effect is slight and for the purposes of the...

Page 39: ...r from 0 to 4 using the keypad 3 Press ENTER YES Changing the user type changes the data that is displayed after a test and when runs are selected from memory In some cases it will change how the test...

Page 40: ...Select User Type from the Setup menu 2 Select user type 3 Press ENTER YES The VC4000 can give Imperial or metric data for braking or acceleration runs Imperial Metric VC4000 Setup VC4000DAQ Manual 76...

Page 41: ...s o 14 EPA mandated sensors on USA spec vehicles o Connect using CAN cable or VSI interface 1 Analog output port o Output various sensors see list o Connect to other data acquisition systems GPS Senso...

Page 42: ...00 monitors and stores any of the 4 channels that are turned on at the selected sample rate If the signals from the VC4000 Setup VC4000DAQ Manual 80 tachometer source are not coming in very fast the R...

Page 43: ...ge threshold If you don t want the G threshold to start the run set it high 1 000 G for example To turn the analog sensors on 1 Select Sensors from the Setup menu 2 Select Analog Sensors 3 Select Sens...

Page 44: ...s Internal Tachometers Tach Factors Tach Factor Number of signals per two engine revolutions Numbers from 1 to 99 may be entered Distributor less ignitions systems will be 2 if connecting to one coil...

Page 45: ...othing Smooth acceleration data Zeroing On Off Zero the accelerometers before a test Accel Range Choose 2G or 6G maximum acceleration G adjust Finely tune the pitch and roll factors Graph Range Set th...

Page 46: ...he display tilted up or down NOTE ON 3D SUMMATION Since the Z axis accelerometer is included in the calculations when 3D summation is on the VC4000 s Z axis accelerometer is sensitive to road vibratio...

Page 47: ...purposes of the VC4000 is considered to be similar for all vehicles designed to be driven on the highways including motorcycles passenger cars semi tractor trailers and most off road vehicles The VC40...

Page 48: ...multiply HP 1000 by vehicle weight including cargo to get actual rear wheel HP and torque To set the Vehicle Weight 1 Select Performance from the Setup menu 2 Select Vehicle Weight 3 Type in a number...

Page 49: ...r Input VC4000DAQ Manual 94 8 SENSOR INPUT This section explains the hardware associated with each sensor input Sensor inputs list Internal sensors Built into the VC4000 circuitry o 1 Compass o 1 yaw...

Page 50: ...y fast the RPM will remain at Internal Sensors Sensor Input VC4000DAQ Manual 96 the last known RPM until a new signal is taken A new RPM reading is calculated for every Tach Factor so for a Tach Facto...

Page 51: ...000 has twelve 16 bit A to D converters built in See Setup Sensors Analog Sensors on page 81 to turn sensors on Analog to Digital converter specifications Input Range 0 5VDC Resolution 16 bits Accurac...

Page 52: ...rs Non USA spec vehicles may have some data through the OBDII port but not necessarily all the data All USA spec vehicles after 1996 are OBDII compliant The vehicle will have an OBDII connector under...

Page 53: ...to Tach 1 If more than one tachometer is required the CAN Tach splitter must be used Vericom recommends using our tachometer adapters to make sure the signals are clean and the voltages are correct Co...

Page 54: ...t GPS position can be stored at the beginning of the test and at the end of the test Also GPS Speed can be stored at GPS Input Sensor Input VC4000DAQ Manual 104 every sample period The VC4000 will sto...

Page 55: ...en using the external activation switch because of the increase in time due to the braking systems mechanical reaction time The activation switch may be connected to any 5 36VDC input Figure 46 Extern...

Page 56: ...tart key is pressed but the next time the brake lights come on the unit will activate You may need to set the G Threshold high enough so it doesn t activate before the external trigger If the G Thresh...

Page 57: ...er the data to our Profile software RS232 port o One of three RS232 ports o 19 2Kbps baud rate o Can use wireless modem 7 mile range USB port o USB 1 1 compatible o 12Mbps baud rate o Requires Vericom...

Page 58: ...ter will only work on port RS232 1 Analog out RS232 Ports RS232 port 2 3 RS232 port 1 PC Interface VC4000DAQ Manual 112 RS232 2 3 is port 2 and 3 Vericom s RS232 splitter is required to use port 3 or...

Page 59: ...uetooth in Setup to work Only one VC4000 should be powered on within proximity of the Bluetooth enabled computer To set the VC4000 to send data via Bluetooth Bluetooth USB port PC Interface VC4000DAQ...

Page 60: ...5 Connect VC4000 to computer See PC Interface on page 110 6 Erase all run memory in the VC4000 a Press the CLEAR NO key from the READY screen b Then press ENTER YES twice 7 Set the port to Auto or sp...

Page 61: ...tection But continuous over voltages or reverse voltages may eventually cause damage to the input circuitry VC4000DAQ Manual 118 Customer Service 13 CUSTOMER SERVICE This section describes Vericom s w...

Page 62: ...I Monitoring GPS position and 5Hz GPS speed Portable micro thermal printer 12V activation cable Brake pedal activation switch Brake Reaction Timer hardware software is included standard Junction box f...

Page 63: ...manually Vibration Mount level and turn Summation to VC4000DAQ Manual 122 Troubleshooting 2D or mount straight and level and turn summation off Or mount on foam pad RPM inaccurate Wrong Tach factor S...

Page 64: ...esolution 12 bits Accuracy 2 LSB Angular Rate Gyro Range 150 sec Accuracy 0 15 sec Linear Acceleration effect 0 2 s G Shock survival 2000 G Compass Range 6 gauss 360 degrees Resolution 1 degree Tachom...

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Page 66: ...ines around some pictures May 21 2008 1 2 Added Data Streaming and Variable Sample Rate Changed Bluetooth baud rate to 57 6K Aug 8 2008 1 3 Added Crash mode Added how to update firmware Moved TOC to t...

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