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ITC8000

6.3.9 Temperature Window

A temperature window can be set to ensure that a laser diode is operated within a defined

temperature interval. Particularly, this function can be used with an external control computer. In

local mode, the “ERR” led will light up, if the temperature exceeds the window.

To set the window select the parameter Twin and adjust the desired value.

Press

to apply the setting.

Activating the temperature protection

To activate or deactivate the temperature protection select the parameter Twin ON resp. Twin

OFF in the channel menu of the module.

6.3.10 Setting the P, I and D Share of the Control Loop

The temperature control behavior of the ITC8000 can be adapted to the individual laser setup by

optimizing the P, I and D share parameters of the control loop.

They can be set separately in a range between 2.5 % and 100 %:

Psh = P share

Ish = I share

Dsh = D share

To change the three parameters select them one by one and set them to the desired value.

Press

to apply the setting.

For adjustment of the parameters, it is sometimes necessary to switch off the I-share completely.

There is a separate switch parameter for this purpose:

Ishare = ON/OFF

Toggle the function using the right soft key.

Press

to terminate input.

6.4 Switching ON and OFF

Attention

ITC8000 modules can be switched on or off at any time, with no regard if any parameters have

been set! So make sure that the appropriate Pre-Settings are made prior to switching on the

module!

Select the module to be switched on or off in the main menu . The LED “SEL” of the selected

module lights up.

Switching ON / OFF the laser current ILD in the channel menu

Press the key to switch on the laser current of the selected module. The LED “LD ON” of the

selected module will light up, this way indicating that the laser current is enabled.

The status display changes from CC [CP] off to CC [CP] on; in the main menu (main

parameters) the displayed set current value is replaced by the actual laser current.

THORLABS ITC8000 User Manual

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