dodal.devices.tetramm.TetrammController#

class dodal.devices.tetramm.TetrammController[source]#

Controller for a TetrAMM current monitor

base_sample_rate#

Fixed in hardware

Type:: int

Parameters:

drv (TetrammDriver) – A configured driver for the device
maximum_readings_per_frame (int) – Maximum number of readings per frame: actual readings may be lower if higher frame rate is required
minimum_values_per_reading (int) – Lower bound on the values that will be averaged to create a single reading
readings_per_frame (int) – Actual number of readings per frame.

Methods

`arm`(num, trigger[, exposure])	param num:
`disarm`()
`get_deadtime`(exposure)	param exposure:
`set_exposure`(exposure)	Tries to set the exposure time of a single frame.

Attributes

`base_sample_rate`
`max_frame_rate`	Max frame rate in Hz for the current configuration
`minimum_exposure`	Smallest amount of time needed to take a frame

async set_exposure(exposure: float)[source]#

Tries to set the exposure time of a single frame.

As during the exposure time, the device must collect an integer number of readings, in the case where the exposure is not a multiple of the base sample rate, it will be lowered to the prior multiple ot ensure triggers are not missed.

Parameters:

exposure (float) – The time for a single frame in seconds

Raises:

ValueError – If exposure is too low to collect the required number
of readings per frame. –

property max_frame_rate: float#: Max frame rate in Hz for the current configuration

property minimum_exposure: float#: Smallest amount of time needed to take a frame