d2:laser_controller
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d2:laser_controller [2019/03/25 21:41] – Michael Radunsky | d2:laser_controller [2019/07/19 18:19] – Michael Radunsky | ||
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**Temp Servo Input (BNC)** | **Temp Servo Input (BNC)** | ||
- | The temperature servo input is summed to the T2 temperature set point signal and can be used to make electronic perturbations to the laser diode temperature. | + | The temperature servo input is summed to the T2 temperature set point signal and can be used to make electronic perturbations to the laser diode temperature. |
+ | |||
+ | <WRAP center round box 570px>< | ||
When the gain is set to " | When the gain is set to " | ||
Line 263: | Line 265: | ||
**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. Zero volts sets zero current and 6 V sets the maximum value of 200 mA (500 mA for 500 mA version). | + | 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. Zero volts sets zero current and 4 V sets the maximum value of 200 mA (500 mA for 500 mA version). |
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. |
d2/laser_controller.txt · Last modified: 2024/03/27 15:33 by Thomas Bersano