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Interface to the PM100A/D power meter from Thorlabs.

Project Description


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.


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

python 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.)


The best way to connect your instrument is with the pyvisa package On linux, the instrument is automatically detected as a USBTMC device. A simple interface is described in the file

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 # 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


Please send bug reports or feedback to Pierre Cladé.

Vesrion History

  • 1.1.1 and 1.1.2 : small bug corrections
  • 1.1 : support of Python 3 with 2to3
  • 1.0 : initial release


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

Source code available on github.

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Release History

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File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
ThorlabsPM100-1.1.2.tar.gz (12.4 kB) Copy SHA256 Checksum SHA256 Source Jul 28, 2017

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