mpylab.device.powermeter2c module

mpylab.device.powermeter2c module.

class mpylab.device.powermeter2c.POWERMETER(SearchPaths=None)

Bases: POWERMETER

Coordinate logical channels of a shared two-channel power meter.

Instances with the same GPIB address share triggers and distribute a multichannel result so that the physical instrument is read only once.

Parameters:

SearchPaths (sequence of path-like, optional) – Directories searched for device INI files and referenced limit data.

GetData()

Read or reuse the value for this logical channel.

Returns:

(status, power) where power is the channel’s scuq.Quantity value.

Return type:

tuple

GetDataNB(retrigger=False)

Return the inherited non-blocking result for this channel.

Parameters:

retrigger (bool or str, optional) – Forwarded to the base power-meter implementation.

Returns:

Status code and power value returned by the base implementation.

Return type:

tuple

Init(ini=None, channel=None, ignore_bus=None)

Initialize and register one logical power-meter channel.

Parameters:

• ini (path-like or file-like, optional) – Device configuration source.

• channel (int or str, optional) – Logical channel represented by this instance.

• ignore_bus (bool or None, optional) – Bus policy. None selects normal hardware communication.

Returns:

Device status; zero indicates success.

Return type:

int

Quit()

Release this logical channel and return the driver status.

Trigger()

Trigger the shared instrument unless a peer just triggered it.

Returns:

Device status; zero indicates success.

Return type:

int

instances = {}