Yokogawa

Yokogawa6370 Optical Spectrum Analyzer

class instruments.yokogawa.Yokogawa6370(*args, **kwargs)

The Yokogawa 6370 is an optical spectrum analyzer.

Example usage:

>>> import instruments as ik
>>> import instruments.units as u
>>> inst = ik.yokogawa.Yokogawa6370.open_visa('TCPIP0:192.168.0.35')
>>> inst.start_wl = 1030e-9 * u.m

Example usage with TCP/IP connection and user authentication:

>>> import instruments as ik
>>> auth = ("username", "password")
>>> inst = ik.yokogawa.Yokogawa6370.open_tcpip("192.168.0.35", 10001, auth=auth)

class Channel(parent, idx)

Class representing the channels on the Yokogawa 6370. This class inherits from OpticalSpectrumAnalyzer.Channel. .. warning:: This class should NOT be manually created by the user. It

is designed to be initialized by the Yokogawa6370 class.

data(limits=None, bin_format=True)

Return the trace’s level data.

Parameters:

limits – Range of samples to transfer as a tuple of min and max value, e.g. (5, 100) transfers data from the fifth to the 100th sample. The possible values are from 0 to 50000.

wavelength(limits=None, bin_format=True)

Return the trace’s wavelength data.

Parameters:

limits – Range of samples to transfer as a tuple of min and max value, e.g. (5, 100) transfers data from the fifth to the 100th sample. The possible values are from 0 to 50000.

class SweepModes(value)

Enum containing valid output modes for the Yokogawa 6370

AUTO = 3

REPEAT = 2

SINGLE = 1

class Traces(value)

Enum containing valid Traces for the Yokogawa 6370

A = 'TRA'

B = 'TRB'

C = 'TRC'

D = 'TRD'

E = 'TRE'

F = 'TRF'

G = 'TRG'

abort()

Abort a running sweep or calibration etc.

analysis()

Get the analysis data.

clear()

Clear status registers.

data(limits=None)

Function to query the active Trace data of the OSA.

Parameters:

limits – Range of samples to transfer as a tuple of min and max value, e.g. (5, 100) transfers data from the fifth to the 100th sample. The possible values are from 0 to 50000.

query(cmd, size=-1)

todo: remove

start_sweep()

Triggering function for the Yokogawa 6370. After changing the sweep mode, the device needs to be triggered before it will update.

wavelength(limits=None)

Query the wavelength axis of the active trace.

Parameters:

limits – Range of samples to transfer as a tuple of min and max value, e.g. (5, 100) transfers data from the fifth to the 100th sample. The possible values are from 0 to 50000.

property active_trace

The active trace of the OSA of enum Yokogawa6370.Traces. Determines the result of Yokogawa6370.data() and Yokogawa6370.wavelength().

property bandwidth

The bandwidth in m.

property center_wl

A floating point property that controls the center wavelength m.

property channel

Gets the specific channel object. This channel is accessed as a list in the following manner:

>>> import instruments as ik
>>> osa = ik.yokogawa.Yokogawa6370.open_gpibusb('/dev/ttyUSB0')
>>> dat = osa.channel["A"].data # Gets the data of channel 0

Return type:

list`[`~Yokogawa6370.Channel]

property id

Get the identification of the device. Output: ‘Manufacturer,Product,SerialNumber,FirmwareVersion’ Sample: ‘YOKOGAWA,AQ6370D,90Y403996,02.08’

property operation_event

All changes after the last readout. Readout clears the operation_event Bit 4: Autosweep Bit 3: Calibration/Alignment Bit 2: Copy/File Bit 1: Program Bit 0: Sweep finished.

property points

An integer property that controls the number of points in a trace.

property span

A floating point property that controls the wavelength span in m.

property start_wl

The start wavelength in m.

property start_wl_max

property start_wl_min

property status

The status byte of the device. Bit 7: Summary bit of operation status Bit 5: Summary bit of standard event status register Bit 4: “1” if the output buffer contains data Bit 3: Summary bit of questionable status

property stop_wl

The stop wavelength in m.

property stop_wl_max

property stop_wl_min

property sweep_mode

A property to control the Sweep Mode as one of Yokogawa6370.SweepMode. Effective only after a self.start_sweep().

Yokogawa7651 Power Supply

class instruments.yokogawa.Yokogawa7651(filelike, *args, **kwargs)

The Yokogawa 7651 is a single channel DC power supply.

Example usage:

>>> import instruments as ik
>>> import instruments.units as u
>>> inst = ik.yokogawa.Yokogawa7651.open_gpibusb("/dev/ttyUSB0", 1)
>>> inst.voltage = 10 * u.V

class Channel(parent, name)

Class representing the only channel on the Yokogawa 7651.

This class inherits from PowerSupply.Channel.

Warning

This class should NOT be manually created by the user. It is designed to be initialized by the Yokogawa7651 class.

property current

Sets the current of the specified channel. This device has an max setting of 100mA.

Querying the current is not supported by this instrument.

Units:

As specified (if a Quantity) or assumed to be of units Amps.

Type:

Quantity with units Amp

property mode

Sets the output mode for the power supply channel. This is either constant voltage or constant current.

Querying the mode is not supported by this instrument.

Type:

Yokogawa7651.Mode

property output

Sets the output status of the specified channel. This either enables or disables the output.

Querying the output status is not supported by this instrument.

Type:

bool

property voltage

Sets the voltage of the specified channel. This device has a voltage range of 0V to +30V.

Querying the voltage is not supported by this instrument.

Units:

As specified (if a Quantity) or assumed to be of units Volts.

Type:

Quantity with units Volt

class Mode(value)

Enum containing valid output modes for the Yokogawa 7651

current = 5

voltage = 1

trigger()

Triggering function for the Yokogawa 7651.

After changing any parameters of the instrument (for example, output voltage), the device needs to be triggered before it will update.

property channel

Gets the specific power supply channel object. Since the Yokogawa7651 is only equiped with a single channel, a list with a single element will be returned.

This (single) channel is accessed as a list in the following manner:

>>> import instruments as ik
>>> yoko = ik.yokogawa.Yokogawa7651.open_gpibusb('/dev/ttyUSB0', 10)
>>> yoko.channel[0].voltage = 1 # Sets output voltage to 1V

Return type:

Channel

property current

Sets the current. This device has an max setting of 100mA.

Querying the current is not supported by this instrument.

Units:

As specified (if a Quantity) or assumed to be of units Amps.

Type:

Quantity with units Amp

property voltage

Sets the voltage. This device has a voltage range of 0V to +30V.

Querying the voltage is not supported by this instrument.

Units:

As specified (if a Quantity) or assumed to be of units Volts.

Type:

Quantity with units Volt