THORLABS LEDD3 Series, Руководство по эксплуатации

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17 Operating the LEDD3
© 2009 Thorlabs
Figure 11 Definition of the Parameter Current and Modulation Depth
External Control Mode
This mode allows to control the LEDD3 by an external signal.
The 'External Control Mode' has no parameter settings. The LED can only be
controlled via the BNC connector at the rear panel of the LEDD3. The applied
voltage corresponds to the LED current. 1V is equivalent to a LED current of
100mA. A maximum voltage of 10V can be applied, which results in a current of
1000mA.
Please note: The maximum current is limited by the user defined current limit set in
the 'Adjust Limit' menu.
Figure 12 External Control Mode
The Modulation Frequency range is 0 to 100kHz and valid for sine wave modulation.
The last selected operation mode will be saved. After switching on the LEDD3 again
this operation mode will be automatically the active mode. All settings are saved and
validated after a shut off. The current settings in the 'Constant Current Mode' and in