M-system 73VR21 Series User Manual page 10

REMOTE TRIGGER RECORDING
In the remote trigger recording mode, data is automatically stored while the external trigger condition (analog or
discrete input) is true.
With an analog trigger, the signal are continuously compared with a preset threshold, and the 73VR21x starts and
stops recording when it is in a pre-determined condition (higher or lower than the threshold).
With a discrete trigger, the signal logic state is continuously monitored, and the 73VR21x starts and stops recording
when it is turned to a pre-determined state (ON or OFF).
n Trigger Conditions for Analog
Value > Threshold
Value < Threshold
Value ≥ Threshold
Value ≤ Threshold
n Trigger Conditions for Discrete
ON
OFF
How to Set the Remote Trigger Recording
Figure 2.3.2. Remote trigger setting, analog.
1. Storing setting: Pull down the arrow to the right of Storing Field and select Remote trigger. Choosing the Remote
trigger on the Data storing method view changes the subsequent menu items to those suitable for the remote
trigger recording mode.
2. Discrete / Analog: Choose a type of trigger signal.
Discrete Contact signal trigger
Analog Analog signal trigger
3. Threshold: For analog signals, set a threshold in an engineering unit value.
Threshold
4. Condition: Choose among the abovementioned options.
5. Pen number: Choose a pen to be designated as trigger.
Data is stored while the trigger input signal value is higher
than the threshold setpoint.
Data is stored while the trigger input signal value is lower
than the threshold setpoint.
Data is stored while the trigger input signal value is equal to
or higher than the threshold setpoint.
Data is stored while the trigger input signal value is equal to
or lower than the threshold setpoint.
Data is stored while the trigger input signal logic is ON.
Data is stored while the trigger input signal logic is OFF.
Figure 2.3.2a. Remote trigger setting, discrete.
A discrete signal triggers recording.
An analog signal triggers recording.
Engineering unit value. Max. 6 digits including decimal
point and minus (–) sign. 'e' is used to set an exponential
value.
73VR21BLD USERS MANUAL EM-7395-C Rev.7 10