Firmware update process
The easiest way to update instrument firmware is online:
- Provide the instrument with an Internet connection using Wi-Fi or Ethernet
- Access update screen (System settings > Update)
- The instrument will detect the latest firmware version, follow on-screen prompts to download and install the update
Updating an offline instrument is accomplished with the following steps:
- Click on the desired version number below. This is a link to the .lsfw firmware update file
- Copy or save the .lsfw file onto the root directory of a USB flash drive. Make sure it is the only .lsfw file in that location
- Plug the flash drive into the USB-C port on the back of the instrument, if you don't have a newer flash drive with a USB-C connection, use the adapter that was supplied with the instrument
- Restart the instrument to be given the option to perform a firmware update.
- Disconnect the USB flash drive once the update is complete
M91 firmware changelog
Added
- GPIB terminators detail moved to info circle
- GPIB now works at 3 MB for higher throughput
- Memory conservation processes improved
Fixed
- :RESult[:STANdard][:SUMMary]? query inconsistencies and errors
- Link commands missing and ignoring Sampling Time parameters
- Sheet Hall Coefficient Standard Error units naming is incorrect
- GPIB comms timeout issue
- Broken wire detection with high resistance samples inconsistent
- GPIB info circle sometimes does nothing when adapter is unplugged
- Cancel button on GPIB address selection dialog does not cancel the selection
- DC Hall standard result query order is incorrect
- DC Hall missing RESult[:STANdard]:POINts? query
Added
- Allow user settable sampling time on all measurements
- Add support for external GPIB connection. Implement SCPI commands for display settings and display lock
- Remove redundant Contact Check from optimization sequence
- Add enhanced error messages and diagnostic data to optimization process
- Modify current autoranging sequence to optimize hardware performance
- Improve display formatting of numerical values
- Change default initial excitation current in Contact Check Optimization to 100 mA
- Improve blanking (settling) time determination
- Add minimum SNR check to DC Hall measurement
- Display "High Resistance" on main page when option is enabled
- Determine if broken wire exists during contact check and notify user
- Allow for full factory reset of instrument
Fixed
- Update broken wire check logic to account for high resistance option license
- Fix off by one issue when calculating DC hall results with field reversal
- Allow contact check to be properly canceled when blanking (settling) time is being calculated
- Clear out previous four-wire measurement results before next test is run
- Fix incorrectly reported carrier type in DC Hall measurement
- Improve measurement auto-ranging when using voltage excitation (Hi-Res) mode
- Update four-wire measurement to accept excitation measurement range
Added
- Zero and negative field values can be entered for DC Hall and FastHall applications
- Improved measure autorange setpoints to enhance measurement linearity
Added
- Default sample thickness setting now dependent upon if resistivity measurement was run prior in sequence or not
- DEFault = Set to 0 m if resistivity test not run (added)
- DEFault = Set to measured resitivity result (no change)
Fixed
- Incorrect displayed measurement range (not identical to programmed range in all states)
- Improved error messaging when user entered sample thickness is invalid value or format
Added
- When using optimized setting and in voltage source mode, improved range and compliance auto parameter selection
Fixed
- Improved functionality when cycling into and out of sleep mode
Initial release