
QSFP-DD Manual rev2.0
3 | P a g e
3. Two thermal loads modes are available: Constant temperature and Constant power dissipation.
a. Constant temperature
Option 1: Used to fix the total temperature of the module (Enter the temperature value and click Set).
Option 2: Used to fix the temperature of a specified spot in the module (Select the spot that you need to
fix its temperature, enter the temperature value and click Set).
b. Constant Power Dissipation
Used to set the power value of the desired spot using the corresponding slider.
Power spots 1 and 2 are always static. However, power spots 3 and 4 can be programmable (precision
0.1W). When the Binary power values checkbox is checked, spots 3 and 4 will be static.
4. The user can set the temperature cut-off value using the Cut-off temperature field. The current cut-
off temperature could be read using the Get button.