Rev: 1.1, 23-Sep-2021
© 2021 Thorlabs
Page 7
3 Operation
upLED™
used for Thorlabs LED’s with EEPROM too. In this case the lower value of EEPROM val-
ue or User Current Limit is the resulting current limit.
5. To turn off the LED:
a. turn the POWER dial counter-clockwise, or
b. switch off power supply or unplug the upLED™ from the power supply or
c. unplug the LED from the upLED™.
6. To reactivate the LED again after turning it off with the POWER dial, use the POWER dial
again.
Note
In that case, no current limit was saved by the upLED. Please ensure to stay below
the LED current limit to avoid damage to the LED.
3.6 Exchange or Replug LEDs
The upLED allows to easily unplug and replug LEDs or to quickly exchange LEDs with the up-
LED™ being active such that the LED immediately emits light.
In that case, the current supplied to the LED equals either:
a) the current set in the upSERIES software as described in the respective manual.
or
b) the current set at the potentiometer.
Note
The upLED features an output open protection with a hardware solution to protect the connec-
ted LED from destructive excess current immediately after connecting it to the upLED™.
3.7 Status LED
The status LED indicates the following states:
Used States:
Green:
Power supply available and LED connected and switched
on.
Green Blinking:
LED is switched off (power supply available and LED
connected)
Yellow:
No LED connected (power supply available)
Yellow, Red, and Green Blinking:
The upLED™ is connected to the LED and the PC, but
not to the power supply. To drive the LED, please con-
nect the power supply.
Special States:
Blue:
Device firmware update (DFU) is running
White / Magenta Blinking:
Fatal Hardware Error
