Thorlabs PM400 Optical Handheld Power and Energy Meter - Firmware Changelog
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This firmware is a device internal program for PM400 Optical Power and Energy
Meters.



Installation Instruction
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In order to update the PM400 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 PM400. 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. Switch on the PM400 and connect it 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 PM400 should be listed. Select the PM400 and
   click Start.

6. The Optical Power Monitor switches the PM400 to DFU upload mode and begins to transfer
   the firmware image. The progress can be observed at the software and at
   the PM400's screen. Do NOT interrupt the process, this may cause your PM400
   to become inoperable!

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

8. To update the language files stored in internal memory follow these instructions. 
        1.Click Menu item on thePM400 and switch memory owner to "Owner USB". 
        2. Now use a file manager to copy files in folder "LANG" out of downloaded 
           zip file to the PM400 internal memory folder "LANG".
        3. Change memory owner back to "Owner PM400". 
        4. Now you can select the languages in the "Display" view. 
   
Changelog
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Apr.15.2024 V1.5.1
        - BUGFIX: Data loss of Customer Calibration in rare heavy load reading case
        
Oct.12.2023 V1.5.0
        - NEW: Position delta measurement in GUI and SCPI interface
        - NEW: Add FETCh:STATe? SCPI command
        - BUGFIX: Bitmask for SYST:SENS:IDN? missed one flag
        - BUGFIX: Change of adapter sensor type during sensor discovery end up in no sensor view

Apr.28.2021 V1.4.3
        - NEW: Allow user to disable view change animation
        - NEW: Enable user to name Powermeter via SCPI interface
        - NEW: New touch controller support
        - NEW: Fast measure with 10kHz to internal buffer
        - UPDATE: GUI translation improvement
        - UPDATE: Use newer version of SCPI parser 
        - UPDATE: Use newer versions of the underlying software stacks.
		
Apr.01.2019 V1.2.8
        - NEW:    Support for Thorlabs Thermopile 4Q Sensors
        - NEW:    SENS1:CORR:POW? with optional parameter to query responsivity at given wavelength
        - NEW:    New surface languages Italian and Spanish
        - NEW:    Support for delta measurement in percentage
        - NEW:    Fast boot by caching sensor information in device
        - NEW:    Show memory consumption of internal memory in device info view
        - NEW:    Support for customer sensor correction at up to 5 wavelength
        - BUGFIX: Input pin where not working directly after reboot
        - BUGFIX: Auto shutdown could interrupt capturing in rare occasions
        - UPDATE: Use newer versions of the underlying software stacks.

Feb.01.2018 V1.2.2
        - BUGFIX: value range of DISP:BRIG remote cmd now from 0 to 1
        - BUGFIX: Fixed problem with wrong unit suffixes in graphs.
        - UPDATE: Use newer versions of the underlying software stacks.
        - BUGFIX: Fixed sporadic USB connection loss problem

Oct.15.2017 V1.1.0
        - NEW:    General purpose input pins supported by device GUI and remote interface.
        - NEW:    Automatically disable delta mode if a measure parameter gets changed.
        - BUGFIX: Inverted the logic levels of the bitmask for remote interface cmd.
                  SOURce:DIGital:ENABle. 0 is input (default) and 1 is output pin direction.
        - BUGFIX: Fixed problem with wrong scales and wrong unit suffixes.
        - UPDATE: Use newer versions of the underlying software stacks.
        - BUGFIX: Allow access to sensor info view during remote lockout state.
 
Feb.09.2017 V1.0.3
        - BUGFIX: Increased hardware settle delay to avoid measurement
                  value peaks during input range switching.
        - BUGFIX: In very rare occasions a wrong SI unit prefix was
                  displayed for power measurement values.
        - BUGFIX: Wrong axis label when changing the sensor unit after
                  recording some data.
                  
Oct.13.2016 Release V1.0.2