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| slice:dcc [2020/04/29 22:51] – [Setting the Operation Mode] Michael Radunsky | slice:dcc [2020/04/30 23:50] – [Laser and Photodiode Connections] Michael Radunsky |
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| ===== SLICE-DCC Operation ===== | ===== SLICE-DCC Operation ===== |
| The Home screen displays the status of both channels (<imgref home_scr_dcc>). The data for each channel is arranged vertically. At a glance, for each channel, I<sub>set</sub>, and Compliance Voltage can be read. Touching the blue window labelled Voltage [V] will cause this window to toggle from displaying Compliance Voltage to displaying dissipated Power. | The Home screen displays the status of both channels (<imgref home_scr_dcc>). The data for each channel is arranged vertically. At a glance, for each channel, I<sub>set</sub>, and Compliance Voltage can be read. Touching the blue window labelled Voltage [V] will cause this window to toggle from displaying Compliance Voltage to displaying dissipated Power. |
| ==== Connecting to the Laser Diode ==== | ==== Laser and Photodiode Connections ==== |
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| | === Connection to Laser Diode === |
| The SLICE-DCC requires that the cathode of the laser diode is at ground (<imgref cath_gnd>). The anode is connected to the center conductor of the SMA connector on the rear of the SLICE-DCC and the cathode is connected to the sheath. | The SLICE-DCC requires that the cathode of the laser diode is at ground (<imgref cath_gnd>). The anode is connected to the center conductor of the SMA connector on the rear of the SLICE-DCC and the cathode is connected to the sheath. |
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| <imgcaption cath_gnd|Wiring configuration for laser diode>{{ :slice:dcc:cathode_ground.png?430 |}}</imgcaption> | <imgcaption cath_gnd|Wiring configuration for laser diode>{{ :slice:dcc:cathode_ground.png?430 |}}</imgcaption> |
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| | === Connection to Monitor Photodiode === |
| | Either of the two configurations of the monitor photodiode seen in <imgref mon_pd> will work for the signal proportional to the laser diode power for operating in Constant Power mode. Depending on how you have completed the monitor photodiode circuit, you may have to adjust the [[slice:dcc#setting_the_operating_power_in_constant_power_mode|sign of the Constant Power feedback loop]]. |
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| | <imgcaption mon_pd|Wiring configuration for monitor photodiode>{{ :slice:dcc:anode_cathode_ground_monitor_pd.png |}}</imgcaption> |
| ==== Setting the Operation Mode ==== | ==== Setting the Operation Mode ==== |
| The SLICE-DCC has two operation modes: Constant Current and Constant Power. The operation mode, as with most other operating parameters can be set independently for each channel. To toggle between Constant Current and Constant Power modes, from the Home screen, touch the window labelled either CH X Constant Current or CH X Constant Power. If the channel is in Constant Current Mode, you will be presented with the window seen in <imgref cc_param>. \\ | The SLICE-DCC has two operation modes: Constant Current and Constant Power. The operation mode, as with most other operating parameters can be set independently for each channel. To toggle between Constant Current and Constant Power modes, from the Home screen, touch the window labelled either CH X Constant Current or CH X Constant Power. If the channel is in Constant Current Mode, you will be presented with the window seen in <imgref cc_param>. \\ |
