Gentec-EO T-Rad (DB-15) - Manual (Page 21)

T-RAD-DB15--USB Instruction Manual Version 2.1 December. 2012 21
1.7.3 Digital Controls
The Controls on the Digital Display area are:
Data Collection
Log to File
Range
Filter Tau
Null
Batch Size
Reset
Auto Reset
Sample Collection
Collection Mode
Time Interval
1.7.4 Data Collection
Data Collection Control. When active the data is collected for display if the device is triggered. Data
Collection is suspended if another control is activated, then resumed when the other control is
released. This is done to prevent the communications buffers from overflowing.
Do Not disconnect the device when Data Collection is active.
1.7.5 Log to File
Log data to selected file. if no file is currently open, a prompt will request the file to log data to.
Data files can be opened, saved, closed and viewed via the File menu.
1.7.6 Range
Selects the desired device measurement range.
1.7.7 Filter Tau
Sets the time constant of the low pass filter used in the Lock In Amplifier.
1.7.8 Null
Subtracts the value of displayed Power or Irradiance when pressed from the subsequent
measured values. Releasing the control returns to normal measurements.
Note that the total maximum displayed measurement, that is the measured value plus the Nulled
value, cannot exceed the selected Range when Null is active.
1.7.9 Batch Size
The Batch Size to collect in Fixed Sample Collection Mode. Resets with the Reset Button or Auto
Reset.
If the Current Sample exceeds the Batch Size when Fixed Sample Collection is selected, a Reset
must be issued to start the new batch.