Thorlabs PM101 Power Meter Interface with External Readout - Firmware Changelog
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This firmware is a device internal program for PM101 Optical Power Meters series. 
The following devices are supported: PM101, PM101A, PM101U and PM101R




Installation Instruction
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In order to update the PM101 firmware, the firmware image
(file extension *.dfu) and the Thorlabs Optical Power Monitor are required.
Thorlabs Optical Power Monitor enables the user to upload a firmware image to the PM101. You
will find it installed to your computer after downloading and installing the
Thorlabs Power Meter Software package from our web site. There (tab "Firmware")
the up-to-date firmware image can be found as well.
Please download it and remember the location on your computer where you saved
it to.

1. Connect the PM101 with the supplied USB cable to the
   computer with Thorlabs Power Meter Software package installed. The computer
   recognizes the connected device and installs the required driver software.

2. Start the "Thorlabs Optical Power Monitor" from Startmenu > All Programs > Thorlabs > Power Meter
   Optical Power Monitor > Thorlabs Optical Power Monitor

3. In the main window select the tab "Help". Then click under "Options" > Tools > 
   Update > Firmware Update Tool

4. Click Browse to select the downloaded *.dfu file, then Select and Next > to
   continue.

5. In the Select Target Device the PM101 should be listed. Select the PM101 and
   click Start.

6. The Optical Power Monitor switches the PM101 to DFU upload mode and begins to transfer
   the firmware image. The progress can be observed in the Optical Power Monitor. 
   Do NOT interrupt the process, this may cause your PM101 to become inoperable!

7. When the transfer has completed click Finish. The PM400 reboots with the new firmware.



Changelog
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Mar.08.2022 V1.3.6
            - UPDATE: Update software libraries to recent versions
            - UPDATE: SCPI Parser to recent version
            - BUGFIX: Array measure SCPI commands
            - BUGFIX: Change adapter type when no sensor connected results in sensor connected state

Oct.24.2019 V1.0.2
            - BUGFIX: Change frontend routing for Photodiode bandwidth limitation
            - BUGFIX: Fixed bug in bitmask calculation for GPIO pins

Aug.02.2019 Release V1.0.0