Measurement Computing DASYLab - Manual (Page 61)

DASYLab – Standard Driver 989593 Configuring DASYLab for Daq Devices B-7
Configuration Files
The Hardware Configuration File saves ALL hardware settings not saved with the worksheet. Including the
main unit type, DBK expansion options, trigger settings, etc. Note that the worksheet only saves the
channel number and gain. The default configuration file is loaded when DASYLab first loads.
Hardware Configuration File
The configuration file PATH and NAME is saved with every worksheet. When a saved worksheet is
loaded, the hardware configuration file is read. If the file does not exist there will be an opportunity to load
another. The default file is used when DASYLab loads.
¾ The configuration file is updated whenever any setting is accepted, i.e., OK is clicked.
¾ When creating a new configuration file, change the name before changing any settings.
¾ When sharing worksheets include the configuration file.
Trigger Settings
The trigger setup is done in the Hardware Setup / Hardware Configuration dialog box.
Clicking on the Trigger button brings up the following dialog box:
Trigger Dialog Box
The Trigger Mode selects how the acquisition will run. The default, “Trigger starts a continuous
acquisition” means that once the trigger event occurs, the acquisition will begin and will not stop until the
acquisition is manually terminated.
The Trigger Event is what will cause the acquisition to begin. If “Without Trigger” is selected, the start
button in DASYLab begins the acquisition immediately. DASYLab software trigger modules can then be
used for event detection. The DASYLab trigger modules are much more flexible than the Hardware
Triggers.
If a level is selected (above, below, positive, or negative), then the signal on the first activated channel in
DASYLab will begin the acquisition. The level can be between -10V and +10V. Once the signal crosses
the level in the appropriate direction, the acquisition will start. Setting the trigger to a TTL edge will begin
an acquisition on a rising or falling edge of the TTL trigger input.
Note: For Daq* series devices, TTL trigger inputs are located on P1.
The TTL triggers are hardware triggers.