Gentec-EO T-Rad-USB (LEMO) - Manual (Page 14)

T-RAD-LEMO-USB Instruction Manual Version 2.0 June 2012 14
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.
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.
Range
Selects the desired device measurement range.
Filter Tau
Sets the time constant of the low pass filter used in the Lock In Amplifier.
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.
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.
Reset
The Reset button resets the current data set in all collection modes.
Auto Reset
Resets the batch when the Current Sample meets the Batch Size if in Fixed Sample Collection
mode.
Sample Collection
Sample Collection is:
Continuous. Data is streamed whenever Data Collection is on. Always only withTime Interval Collection
mode.
Fixed. Data is collected whenever Data Collection is on until the Current Sample meets the Batch
Size.
Collection Mode
Collection Mode is:
Streaming. Data is streamed at the data frequency rate. Always only with Fixed Data Sample Collection
mode.
Time Interval. Data is collected when the selected time interval is met. The Time Interval control