d2:laser_controller
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Both sides previous revisionPrevious revisionNext revision | Previous revisionNext revisionBoth sides next revision | ||
d2:laser_controller [2019/03/25 23:21] – Michael Radunsky | d2:laser_controller [2019/07/25 17:11] – Michael Radunsky | ||
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**Setpoint In** | **Setpoint In** | ||
- | SETPOINT IN is an analog input. When the SETPOINT ENABLE is LOW (0 V) the SETPOINT IN voltage value sets the injection current instead of the front panel dial. | + | SETPOINT IN is an analog input. When the SETPOINT ENABLE is LOW (0 V) the SETPOINT IN voltage value sets the injection current instead of the front panel dial. |
This input is rolled off at 14 Hz, which is not much higher frequency than the front panel dial, which rolls off at 8 Hz, with a second pole at 4 Hz. Therefore, noise can enter the circuit at this point and this input should be used with caution. | This input is rolled off at 14 Hz, which is not much higher frequency than the front panel dial, which rolls off at 8 Hz, with a second pole at 4 Hz. Therefore, noise can enter the circuit at this point and this input should be used with caution. | ||
Line 275: | Line 275: | ||
When disconnected, | When disconnected, | ||
- | The Servo Input on the front panel continues to function when the SETPOINT ENABLE is pulled low. | + | The Servo Input on the front panel continues to function when the SETPOINT ENABLE is pulled low. Only the Coarse and Fine Current Adjustments are disabled. |
=====Turning on the Laser Diode===== | =====Turning on the Laser Diode===== |
d2/laser_controller.txt · Last modified: 2024/03/27 15:33 by Thomas Bersano