dodal.devices.tetramm.TetrammController

class dodal.devices.tetramm.TetrammController

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()
disarm()
get_deadtime(exposure)
prepare(trigger_info)
set_exposure(exposure)	Tries to set the exposure time of a single frame.
wait_for_idle()

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)

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