VZM 300
D1 2010BA0-GB03
4.1
4 Trigger
Menu
To conduct a measurement the VZM 300 requires a start and end signal (trigger start/stop).
These start/stop signals are actuated once a measurement exceeds or falls below a preset
value (e.g. trigger threshold of the brake deceleration > 1 m/s
2
).
The trigger start/stop signals can be released by various control elements.
Trigger: Control element (deceleration, pedal force, tractive force, hand trigger, pressure 1, 2 or
3) for starting (Trigger start) or terminating (Trigger stop) a measurement.
In addition, the value of this control element can be set by the user. This is necessary for small
decelerations (< 1 m/s
2
) which would not normally trigger the measurement at all.
Trigger threshold: Value (in m/s
2
, N, kN or bar) of the control element which starts/stops a
measurement.
Operation with pedal force meter, tractive force sensor or pressure sensor 1
1. Sensor connected after offset balance of VZM 300
Measurement is conducted as simple brake deceleration test (trigger thresholds of deceleration
activated). The value measured by the sensor is shown on the display and appears on the
printout.
2. Sensor connected before switch-on of VZM 300
The VZM 300 automatically recognizes the sensor and activates the corresponding trigger
thresholds (trigger thresholds of sensor activated). This setting is maintained until the measured
values are deleted or the setting is changed in the Trigger Menu.
3. Sensor connected before switch-on of VZM 300 (triggering with deceleration)
The operator conducts all measurements with the pedal force meter, but wants to use the
deceleration for triggering.
To do this, the trigger thresholds of the connected sensor must be deactivated. In the Setting
Menu (6.2 "Program Variables") the trigger thresholds of the sensor must be set to 65535.
4. Operation with pressure sensors 2 and 3
After completion of the offset balance the trigger menu can be activated. Here it can be
determined which pressure sensor (2 or 3) is available. In addition, the active sensors which
control the automatic start and stop triggers for test start and end can be selected.
To maintain the previous setting, exit the Trigger Menu using <ESC>.
To take over the new setting, exit the Trigger Menu using <*>.
