Thursday, 01 December 2022

Hard- & Software Product Change Notification LDD-1137

We inform you that from now on all newly delivered LDD-1137 devices have the new Hardware version v1.30 and will be programmed with the updated firmware version v1.31 by default. Please let us know if you need the older firmware version on your LDD (v1.30).


The most important hardware changes:

  • Hardware version v1.20 becomes hardware version v1.30
  • Interlock is now galvanically insulated
  • Changed TTL inputs slightly to match the TLL specifications better

Further and detailed information can be found in the LDD-1137 Hardware Release Notes.


Attention: hardware version 1.30 requires firmware version v1.31+.

The most important software changes:

  • Firmware version v1.30 becomes firmware version v1.31
  • New and Improved Features
    • LDD system can be reset separately without reboot.
    • Control system improved.
    • Feature: Pulse current low display option.
    • Feature: External Temperature Measurements with limits
    • Feature: RS485_1 Interface usable with options
  • Bug fixes:
    • Communication between the current measurement circuit and the FPGA adapted to changes in hardware version 1.30.
    • Overcurrent raises LDD Error and not System error anymore.

Detailed information can be found in the LDD-1137 Software Release Notes.

The new firmware version is  compatible with all hardware versions of the LDD-1137. The firmware v1.31 can be updated by yourself. Just download the latest Software package and install the Firmware under the tab “Device” -> "Firmware Update"

If you have any further questions or concerns, please do not hesitate to contact us. We will be glad to help you.