iseg-nhr

Python interface for an ISEG NHR high-voltage power supply

Example

from iseg_nhr import NHR, Polarity

psu = NHR("COM3")

polarity = psu.channel0.voltage.polarity
print(polarity)

psu.channel0.voltage.setpoint = 1_000
psu.channel0.on()
print(psu.channel0.voltage.measured)
print(psu.channel0.current.measured)

Implementation

The main NHR class has the following attributes and methods:
NHR

• channel{i}
Channel class specifying all options for a specific channel
• supply
Supply class containing the supply voltages
• identity
  *IDN?; model, serial number etc.
• status_clear()
  *CLS
• reset
  *RST
• operation_complete
  *OPC
• instruction_set
  instruction set used by the module
• lockout()
  Disable local control of the module
• local()
  Enable local control of the module
• control_register
  module control register
• status_register
  module status register
• event_register
  module event register
• event_clear()
  clear the module event register
• temperature
  module temperature
• number_channels
  number of module channels
• firmware_version
  firmware version
• firmware_release
  firmware release date
• config
  config mode, either normal or configuration mode
• config_save
  save current configuration
• voltages
  return the measured voltage of each channel
• currents
  return the measured current of each channel
• setpoints
  return the setpoint voltage of each channel
• on([0,1])
  turn on channels 0 and 1
• off([0,1])
  turn off channels 0 and 1

Channel

• voltage
Voltage class
• current
Current class
• on_state
  boolean for on state of channel
• on()
  turn channel on
• off()
  turn channel off
• emergency_off()
  turn channel off immidiately, ignoring ramp settings
• emergency
  boolean for channel emergency
• emergency_clear
  clear channel emergency
• event_clear()
  clear channel events
• control_register
  channel control register
• status_register
  channel status register
• event_register
  channel event register
• polarity
  channel polarity
• polarity_list
  list of channel polarity options
• output_mode
  channel output mode
• output_mode_list
  channel output mode options
• inhibit
  channel inhibit setting
• inhibit_options
  channel inhibit options

Voltage

• ramp
Ramp class
• measured
  measured output voltage
• setpoint
  voltage setpoint
• limit
  voltage limit
• maximum
  nominal output voltage
• maximum
  voltage mode with polarity sign
• mode_list
  voltage mode options
• bounds
  output voltage bounds

Current has the same attributes and methods, excluding the setpoint

Ramp

• speed
  ramp speed in unit/s
• speed_up
  upward ramp speed in unit/s
• speed_down
  downward ramp speed in unit/s
• speed_min
  minimum ramp speed in unit/s
• speed_max maximum ramp speed in unit/s