Embedded Files
February 2025 Updates
February 2025 Updates
Output Data File Format
The Output data file format was changed to capture all the exposures for an acquisition and add it to the file in the following format
RED - Wavelength
GREEN - Selected Shot
BLUE - All the shots
2. The NumExposures variable determines the number of exposures it will wait for in an acquisition instance.
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Introduction:
Install and run HamamatsuSpectrometerDAQ device on new computer.
Setup Instructions:
The instructions are important because the spectrometer requires an external DAQ device to recieve a trigger and then it signals the spectrometer to acquire
Connect both spectrometer and DAQ to the same computer.
Open NI Max
Change the DAQ device name to "Dev1"
Go to the device panel and click "Create Task"
Expand Acquire signals> Digital Input> Line Input (for Ext Trigger)
Specify the port/line (depends on how you have connected to DAQ to the trigger line)
Name the task as 'ExtTrigger' and press finish.
In Master Control, open database editor > Device Ops > Device Variable Ops > Device Variable.
Navigate to the Device you are setting up. Navigate to the variable called 'task'
Set the default value to 'ExtTrigger'
Important Notes:
1. This device uses a NI daq pad. Users need to create a DI task and enter the task name as a variable in the db for this devicetype. triggerbeforepulse variable is the time between the trigger pulse input to the daq task and the arrival of the actual laser pulse. The hamamatsu always runs in asynchronous mode with internal software triggers. It will acquire a minimum of 3 acquisitions if the exposure time is equal to or greater than the triggerbeforepulse time.
example: triggerbeforepulse = 10 ms, exposure = 5 ms , No of acquisitions = (triggerbeforepulse/exposure)+3 = 5 acquisitions. Try to keep the exposure nearly equal but slightly smaller than triggerbeforepulse. It will ensure the capture of the spectral signal.
Procedure:
Steps to run device:
Follow steps 1 and 2 if the device type is not already in your database
1. Follow steps of Add/Edit new device type
2. Enter Name “HamamatsuSpectrometerDAQ” and Relative Path “HamamatsuSpectrometerDAQ\HamamatsuSpectrometerDAQ.lvclass” and click on create/Modify Devicetype.
3.Then Add New HamamastuDAQ Device by following steps of Create New Device and Launch New Device
GUI exe path "\General GUIs\Device GUIs\GUI_HamamatsuSpectrometer\GUI_HamamatsuSpectrometer.exe"
4. Modify Devicetype Variable for HamamastuDAQ device
5. Launch local GUI from master control
6. HamamastuDAQ_GUI will open.
7. User can also set Devicetype variable values from HamamastuDAQ_GUI.
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