monochromator module
- class monochromator.Monochromator(com)[source]
Bases:
objectImplements Monochromator for Princeton Instruments HRS-300.
Note: HRS-300 has manual filter wheel controls on the device. Users should periodically query the current monochromator filter wheel position.
- checkFilter()[source]
Function to read position of monochromators filter wheel.
- Returns:
current monochromator’s filter position
- Return type:
int
- Raises:
LoggerError – Raises error if monochromator is not connected or Exception handling
- checkGrating()[source]
Function to update monochromator grating position from GUI defaults.
- Parameters:
wavelength (float, required) – Current wavelength position of monochromator
- Returns:
Current grating position
- Return type:
int
- Raises:
LoggerError – Raises error if monochromator not connected or Exception handling
- chooseFilter(filterNo)[source]
Function to send filter selection command to filter wheel.
- Parameters:
filterNo (float, required) – Filter position
- Return type:
None
- Raises:
LoggerError – Raises error if monochromator not connected or Exception handling
- chooseGrating(gratingNo)[source]
Function to send grating command to monochromator.
- Parameters:
gratingNo (float, required) – Monochromator grating number
- Return type:
None
- Raises:
LoggerError – Raises error if monochromator not connected or Exception handling
- chooseScanSpeed(speed)[source]
Function to send scan speed command to monochromator.
- Parameters:
speed (float, required) – monochromator grating scan speed
- Return type:
None
- Raises:
LoggerError – Raises error if monochromator not connected or Exception handling
- chooseWavelength(wavelength)[source]
Function to send wavelength command to monochromator.
- Parameters:
wavelength (float, required) – target wavelength
- Return type:
None
- Raises:
LoggerError – Raises error if monochromator not connected or Exception handling
- connect()[source]
Function to establish connection to monochromator.
- Returns:
True if connection successful, False otherwise
- Return type:
bool
- Raises:
LoggingError – Raises Loggingerror for Exception handling
- initializeFilter(filterDiff)[source]
Function to initialize filter wheel.
- Parameters:
filterDiff (int, required) – Difference between filter position and initialization position
- Return type:
None
- Raises:
LoggerError: – Raises error if monochromator not connected or Exception handling
- waitForOK()[source]
Function to wait for acceptance signal from monochromator.
- Returns:
True if connection successful, False otherwise
- Return type:
bool
- Raises:
LoggingError – Raises error if monochromator connection failed or Exception handling
Notes
After 10 unsuccessfull readouts, the function interrupts itself.