
VC4000DAQ Manual
69
When using Auto Start, the VC4000 starts timing your run when the
vehicle reaches a ±0.2G threshold. If you launch or brake too gently
you will be accelerating or decelerating before the VC4000 considers
the run to have started, so your run will be off by that much. Be sure
to launch or brake hard enough to trigger the VC4000 the instant the
car changes motion; otherwise your data will be off by the time and
speed it takes for the car to reach the ±0.2G threshold. If you have
trouble launching or braking hard enough to trigger the Auto Start
threshold, change the G-Threshold to 0.1G. If the VC4000 is starting
too soon such as in a large truck that decelerates quickly when there
is no throttle applied, use a 0.3G threshold.
Crash mode will use the G-Threshold and multiply it by 4 for the
Crash mode G-Threshold, with a maximum of 4G.
To set G-Threshold:
1. Select
G-Threshold
from the Setup menu
2. Type in the new threshold using the keypad
a. For example for 0.100 type 100
3. Press
ENTER / YES
.
G Threshold note: Units shipped with requested New York State
specifications have a default threshold of 0.100 G.
The VC4000 allows the user to insert a vehicle ID for each test. The
I.D. will print 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
ENTER / YES
.
Vehicle ID
G-Threshold
VC4000 Setup
VC4000DAQ Manual
70
If your VC4000 is not working properly it may be that some of the
settings were
inadvertently changed
. A common problem is when
the G-Threshold gets changed to some small number the unit will
activate too soon. Try setting defaults to see if that restores it to
normal operation. Note that this will change all settings except User
Type. The user variables will be set to the values of:
G-Threshold = 0.200 (See note below)
Vehicle ID = 0
Pitch/Roll Factors = 1 (G adjust = 0.9700)
User Type = Unchanged
Units = Imperial
RS232 Port/Printer = Port 1
RS232 Port/Data Transfer = Bluetooth
Brake MPH = 20
Sensors
o
Internal: All OFF
o
Tachometers: All OFF
o
Analog Sensors: All OFF
o
OBDII Sensors: All OFF
o
Tach Factors: All = 8
o
Analog out = OFF
o
GPS Sensors: All OFF
Accelerometer
o
G Summation = Summation 3D (XYZ)
o
G Smoothing = 3
o
Zeroing ON/OFF = ON
o
Accel Range = 2G
o
G Adjust = 0.9700 (Pitch/Roll = 1)
o
Graph Range = 1.0
o
Alarm Threshold = 0.0
o
Sample Rate = 100
Performance
o
Vehicle Weight = 1000
o
Countdown = OFF
o
Tachometers: All OFF
o
Tach Factors: All OFF
G Threshold note: Units shipped with requested New York State
specifications have a default threshold of 0.100 G.
Set Defaults