Constant Current Mode Operation - Newport LDC-3706 Series User Manual

Constant Current Mode Operation

1. Plug the LDC-3706 instrument into an AC power source supplying the correct mains voltage
and frequency for instrument (refer to the rear panel for the correct ratings)
2. Turn on the LDC-3706; the output will be disabled at power up and the unit will automatically
configure its parameters to the state which existed when the power was last shut off
3. Press the SELECT soft button in the TEC MODE section of the front panel until the TE
CURRENT LED is selected
4. Press the TEC button in the PARAMETER section of the front panel to enable the menu
structure and adjust the applicable limits, sensor type, calibration constants, and external fan
control. Use the SET button to select the parameter to adjust and then use the ADJUST
KNOB to change the parameter to the desired value. Clockwise rotation will increase the
parameter and counter-clockwise rotation will decrease the parameter. Allow the parameter
adjustment to time out (three seconds) or press the SET button to save the new parameter in
non-volatile memory
5. Adjust the TEC current setpoint by enabling the TEC adjustment mode by pressing the TEC
button in the ADJUST section of the front panel and rotate the ADJUST KNOB to the desired
value
6. The user can display measured voltage, sensor value, or temperature or the current setpoint
on the TEC side (left) display by pressing the LEFT (left) and RIGHT (left) display buttons
7. Enable the TEC output of the LDC-3706 instrument by pressing the ON soft button (left) in
the TEC MODE section of the front panel. This button has a toggling action so pressing this
button once more will disable the TEC output
December 2019 38 LDC-3706 Series Laser Controller