Euro Test HPP120256 High Voltage Power Supply

class pymeasure.instruments.eurotest.EurotestHPP120256(adapter, name='Euro Test High Voltage DC Source model HPP-120-256', query_delay=0.1, write_delay=0.4, timeout=5000, **kwargs)

Bases: Instrument

Represents the Euro Test High Voltage DC Source model HPP-120-256 and provides a high-level interface for interacting with the instrument using the Euro Test command set (Not SCPI command set).

hpp120256 = EurotestHPP120256("GPIB0::20::INSTR")

print(hpp120256.id)
print(hpp120256.lam_status)
print(hpp120256.status)

hpp120256.ramp_to_zero(100.0)

hpp120256.voltage_ramp = 50.0  # V/s
hpp120256.current_limit = 2.0  # mA
inst.kill_enabled = True  # Enable over-current protection
time.sleep(1.0)  # Give time to enable kill
inst.output_enabled = True
time.sleep(1.0)  # Give time to output on

abs_output_voltage_error = 0.02 # kV

hpp120256.wait_for_output_voltage_reached(abs_output_voltage_error, 1.0, 40.0)

# Here voltage HV output should be at 0.0 kV

print("Setting the output voltage to 1.0kV...")
hpp120256.voltage_setpoint = 1.0  # kV

# Now HV output should be rising to reach the 1.0kV at 50.0 V/s

hpp120256.wait_for_output_voltage_reached(abs_output_voltage_error, 1.0, 40.0)

# Here voltage HV output should be at 1.0 kV

hpp120256.shutdown()

hpp120256.wait_for_output_voltage_reached(abs_output_voltage_error, 1.0, 60.0)

# Here voltage HV output should be at 0.0 kV

inst.output_enabled = False

# Now the HV voltage source is in safe state

class EurotestHPP120256Status(value, names=None, *, module=None, qualname=None, type=None, start=1, boundary=None)

Bases: IntFlag

Auxiliary class create for translating the instrument 16bits_status_string into an Enum_IntFlag that will help to the user to understand such status.

ask(command): Overrides Instrument ask method for including query_delay time on parent call. :param command: Command string to be sent to the instrument. :returns: String returned by the device without read_termination.

property current: Measure the actual output current in mAmps (float).

property current_limit: Control the current limit in mAmps (float strictly from 0 to 25).

property current_range: Measure the actual output current range in mAmps (float).

emergency_off(): The output of the HV source will be switched OFF permanently and the values of the voltage and current settings set to zero

property id: Get the identification of the instrument (string)

property kill_enabled: Control the instrument kill enable (boolean).

property lam_status: Get the instrument lam status (string).

property output_enabled: Control the instrument output enable (boolean).

ramp_to_zero(voltage_rate=200.0): Sets the voltage output setting to zero and the ramp setting to a value determined by the voltage_rate parameter. In summary, the method conducts (ramps) the voltage output to zero at a determinated voltage changing rate (ramp in V/s). :param voltage_rate: Is the changing rate (ramp in V/s) for the ramp setting

shutdown(voltage_rate=200.0): Change the output voltage setting (V) to zero and the ramp speed - voltage_rate (V/s) of the output voltage. After calling shutdown, if the HV voltage output > 0 it should drop to zero at a certain rate given by the voltage_rate parameter. :param voltage_rate: indicates the changing rate (V/s) of the voltage output

property status: Get the instrument status (EurotestHPP120256Status).

property voltage: Measure the actual output voltage in kVolts (float).

property voltage_ramp: Control the voltage ramp in Volts/second (int strictly from 10 to 3000).

property voltage_range: Measure the actual output voltage range in kVolts (float).

property voltage_setpoint: Control the voltage set-point in kVolts (float strictly from 0 to 12).

wait_for_output_voltage_reached(voltage_setpoint, abs_output_voltage_error=0.03, check_period=1.0, timeout=60.0)

Wait until HV voltage output reaches the voltage setpoint.

Checks the voltage output every check_period seconds and raises an exception if the voltage output doesn’t reach the voltage setting until the timeout time. :param voltage_setpoint: the voltage in kVolts setted in the HV power supply which should be present at the output after some time (depends on the ramp setting). :param abs_output_voltage_error: absolute error in kVolts for being considered an output voltage reached. :param check_period: voltage output will be measured every check_period (seconds) time. :param timeout: time (seconds) give to the voltage output to reach the voltage setting. :return: None :raises: Exception if the voltage output can’t reach the voltage setting before the timeout completes (seconds).

write(command, **kwargs)

Overrides Instrument write method for including write_delay time after the parent call.

Parameters: command – command string to be sent to the instrument