Koheron CTL200 digital laser diode controller

class pymeasure.instruments.koheron.koheron_ctl200.CTL200(adapter, name='Koheron CTL200', baud_rate=115200, **kwargs)

Bases: Instrument

PyMeasure driver for the Koheron CTL200-0 digital laser diode controller.

property analog_input_1: Any: Get the voltage on auxiliary input AI1 in V (float).

property analog_input_2: Any: Get the voltage on auxiliary input AI2 in V (float).

ask(command, query_delay=None): Write a command and return its reply without echo and prompt.

property baud_rate_setting: Any: Control the UART baud rate of the device (int, strict_range from 9600 to 460800). The new baud rate takes effect immediately, which desynchronizes the current connection: reconnect with a matching baud_rate to keep communicating. Use save() to persist it across power cycles.

property board_temperature: Any: Get the current temperature of the driver board in °C (float).

property board_version: Any: Get the board model version (str).

check_errors()

Read the error status flag, log the errors, and clear them.

Returns:: List of error entries.

clear_error(): Clear the error code.

property error_status: Any: Get the current error status (KoheronError). The device returns the error code in hexadecimal format.

property firmware_version: Any: Get the firmware version (str).

property interlock_enabled: Any: Control whether the hardware interlock is enabled (bool).

property laser_current_limit: Any: Control the laser current software limit in A (float, strict_range from 0 to 1).

property laser_current_setpoint: Any: Control the laser current setpoint in A (float).

property laser_delay: Any: Control the delay time between controller startup and laser startup in s (float, strict_range from 0.01 to 100).

property laser_enabled: Any: Control whether the laser output is enabled (bool).

property laser_modulation_gain: Any: Control the laser current modulation gain of auxiliary input 1 in A/V (float, strict_range from -100 to 100).

property laser_voltage: Any: Get the laser voltage in V (float).

property photodiode_current: Any: Get the photodiode current in A (float).

property pid_differential: Any: Control the differential gain of the TEC PID controller (float, strict_range from 0 to 0.1).

property pid_integral: Any: Control the integral gain of the TEC PID controller (float, strict_range from 0 to 0.1).

property pid_proportional: Any: Control the proportional gain of the TEC PID controller (float, strict_range from 0 to 0.1).

save(): Save the current configuration to internal non-volatile memory.

property serial_number: Any: Get the serial number (str).

property status: Any: Get a dict with all status values (“lason”, “vlaser”, “itec”, “vtec”, “rtact”, “iphd”, “ain1”, “ain2”).

property tec_current: Any: Get the TEC current in A (float).

property tec_enabled: Any: Control whether the TEC output is enabled (bool).

property tec_modulation_gain: Any: Control the temperature modulation gain of auxiliary input 2 in Ω/V (float, strict_range from -100000 to 100000).

property tec_voltage: Any: Get the TEC voltage in V (float).

property tec_voltage_limit_max: Any: Control the maximum TEC voltage limit in V (float, strict_range from 0 to 3).

property tec_voltage_limit_min: Any: Control the minimum TEC voltage limit in V (float, strict_range from -3 to 0).

property temp_protection_enabled: Any: Control whether temperature protection is enabled (bool). If temperature protection is enabled, the laser current is automatically disabled if the thermistor resistance is outside the set thermistor window.

property thermistor_actual: Any: Get the actual thermistor resistance in Ω (float).

property thermistor_setpoint: Any: Control the thermistor resistance setpoint in Ω (float).

property thermistor_window_max: Any: Control the maximum thermistor resistance in Ω to trigger temperature protection if enabled (float).

property thermistor_window_min: Any: Control the minimum thermistor resistance in Ω to trigger temperature protection if enabled (float).

property user_data: Any: Control the user data string saved on the device (max. 31 chars, str)

write(command, **kwargs)

Write a command and consume the echo and the reply.

The device replies to every command with a single value line, settings included. It is discarded here to leave no unread data behind.