datalogd.plugins.thorlabspm100_datasource module¶
-
class
datalogd.plugins.thorlabspm100_datasource.
ThorlabsPM100DataSource
(sinks=[], serialnumber=None, usb_vid='0x1313', usb_pid='0x8078', interval=1.0)[source]¶ Bases:
datalogd.DataSource
Provide data from a Thorlabs PM100 laser power meter.
This uses the VISA protocol over USB. On Linux, read/write permissions to the power meter device must be granted. This can be done with a udev rule such as:
SUBSYSTEMS=="usb", ACTION=="add", ATTRS{idVendor}=="1313", ATTRS{idProduct}=="8078", OWNER="root", GROUP="usbusers", MODE="0666"
where the
idVendor
andidProduct
fields should match that listed from runninglsusb
. Theusbusers
group must be created and the user added to it:groupadd usbusers usermod -aG usbusers yourusername
A reboot will then ensure permissions are set and the user is a part of the group.
Parameters: - serialnumber – Serial number of power meter to use. If
None
, will use the first device found. - interval – How often to poll the sensors, in seconds.
- serialnumber – Serial number of power meter to use. If