ThorlabsPM100 1.2.3

Overview

This package can be used to drive a PM100A/D power meter from Thorlabs. It provides an object oriented interface to the SCPI commands using Python properties.

Installation

To install the ThorlabsPM100 driver, download the package and run the command:

python setup.py install

You can also directly move the ThorlabsPM100 to a location that Python can import from (directory in which scripts using ThorlabsPM100 are run, etc.)

Usage

The best way to connect your instrument is with the pyvisa package https://pyvisa.readthedocs.io/en/stable/. On linux, the instrument is automatically detected as a USBTMC device. A simple interface is described in the file usbtmc.py

First you need to create your instrument. Using visa:

import visa
from ThorlabsPM100 import ThorlabsPM100
rm = visa.ResourceManager()
inst = rm.open_resource('USB0::0x0000::0x0000::xxxxxxxxx::INSTR',
                        term_chars='\n', timeout=1)
power_meter = ThorlabsPM100(inst=inst)

Or using usbtmc (you nedd to have read and write access to the ‘/dev/usbtmc0’):

from ThorlabsPM100 import ThorlabsPM100, USBTMC
inst = USBTMC(device="/dev/usbtmc0")
power_meter = ThorlabsPM100(inst=inst)

Commands that set or query a value are Python properties of ThorlabsPM100 class. Other command are methods of ThorlabsPM100 class

print power_meter.read # Read-only property
print power_meter.sense.average.count # read property
power_meter.sense.average.count = 10 # write property
power_meter.system.beeper.immediate() # method

Contact

Please send bug reports or feedback to Pierre Cladé.

Vesrion History

• 1.2.1 : change ‘ask’ to ‘query’

• 1.1.1 and 1.1.2 : small bug corrections

• 1.1 : support of Python 3 with 2to3

• 1.0 : initial release

Documentation

Detailed information about the Thorlabs PM100 driver can be found on the main web site

Source code available on github.