THORLABS DC4104, Руководство по эксплуатации

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3 Operating Instruction
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3.1.2 Brightness Mode
This mode can be used to apply a constant current in terms of percentage. This can be useful if
two or more beams are superimposed with each other. A maximum current can be defined,
which corresponds to 100%. Each channel can be set individually or all channels can be set
simultaneously.
The actual brightness in percent for each channel is displayed. If you connect a Thorlabs LED
with an internal EEPROM or the 4 Color LED LED4Cx the corresponding wavelength will dis-
played instead of the channel number. There are two different output modes: 'Single Selection'
and 'Multi Selection'. The output mode can be selected in the 'Setting' menu (see
Settings) .
The 'Multi Selection Mode' is illustrated by square indicators. More than one LED at a time can
be switched on and is indicated by a little check mark in the square box.
The 'Single Selection Mode' features small circles as output indicators which are filled with a
dot when the LED is on. Only one LED at a time can be switched on within this mode. This is
convenient when you want to switch between two LEDs quickly. It is not necessary to switch a
LED off prior to switch on another LED.
Select a channel with the multicontrol knob and press the 'LED' button to switch the LED on or
off, respectively. If you press and hold the 'LED' button for more than 3 seconds you will switch
on all LEDs at once. If all LEDs are already on you can switch them off using this procedure.
If no LED is connected to a channel it will be marked with 'n/a'.
In order to change the brightness of a certain channel, this channel has to be selected using
the multicontrol knob and confirmed with the 'OK' button. A new screen appears and the bright-
ness of the selected channel can be set directly using the multicontrol knob. The change takes
affect immediately. To confirm the adjusted brightness, press the 'OK' button. To reject the set
brightness, press the 'ESC' button. Both actions yield back to the channel selection menu. The
LED brightness can be changed when the LED is off as well as when it is in operation. This al-
lows to increase or reduce the brightness of the LED. The resulting current is displayed at the
bottom of the screen. In the upper left corner the selected channel is displayed.
Return to the main menu by pressing the 'ESC' button.
The brightness mode offers the opportunity to set the brightness of all channels simultaneously.
Select 'All Channels' in the channel selection menu and confirm by 'OK' button. Now the bright-
ness in percent can be set and will take affect immediately. The value in percent is for all chan-
nels the same. The adjusted brightness can be confirmed with 'OK' or rejected with 'ESC'. It will
return to the channel selection menu.
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