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slice:dcc [2019/08/29 17:42] – [Table] Michael Radunsky | slice:dcc [2019/09/24 22:11] – [Triggering] Michael Radunsky |
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The SLICE-DCC Current Controller is intended for driving laser diodes. When using lasers particular care must be given to exposure hazards. | The SLICE-DCC Current Controller is intended for driving laser diodes. When using lasers particular care must be given to avoid exposure hazards. |
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{{ d2:d2-100:class_iiib.png?430 }} | {{ d2:d2-100:class_iiib.png?250 }} |
=====Description===== | =====Description===== |
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===== Purchase Includes ===== | ===== Purchase Includes ===== |
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* SLICE-DCC dual-channel Current Controller | * SLICE-DCC dual-channel Current Controller |
* AC power cord with appropriate wall plug for you location (if known) | * AC power cord with appropriate wall plug for you location (if known) |
* Two 6 ft SMA cables | * Two 6 ft SMA cables |
* Two D2-007 Breakout boards (<imgref 007>) | * One BNC grounding cap for door safety interlock |
* One 50 Ω terminator for rear-panel safety interlock | |
* Two keys for lock out | * Two keys for lock out |
* Final Test Documentation | * Final Test Documentation |
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<imgcaption 007|D2-007 Breakout board.>{{ :d2:d2-105:d2-007.jpg?200}}</imgcaption> | |
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===== Absolute Maximum Ratings and Power Input ===== | ===== Absolute Maximum Ratings and Power Input ===== |
Note: All modules designed to be operated in a laboratory environment. | Note: All modules designed to be operated in a laboratory environment. |
<imgcaption enter_butt|Enter button>{{ :slice:slice-qt-enter.jpg?76x76 |}}</imgcaption> | <imgcaption enter_butt|Enter button>{{ :slice:slice-qt-enter.jpg?76x76 |}}</imgcaption> |
Accepts parameter edits and exits keypad. | Accepts parameter edits and exits keypad. |
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| ==== Extendable Legs ==== |
| The SLICE-DCC has four extendable legs (<imgref belly>). Extending the front legs allows easy viewing from above (<imgref dcc_prod_shot>) and extending the rear legs (<imgref side>) allows easy viewing from below. |
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| <WRAP half column><imgcaption belly|Underside of SLICE-DCC>{{ :slice:dcc:dcc_underbelly_labelled.png |}}</imgcaption> |
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| <WRAP half column><imgcaption side|Side view of SLICE-DCC configured for viewing from below>{{ : slice:dcc:slice-dcc_looking_down.png?400 |}}</imgcaption></WRAP> |
===== 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. |
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| {{ :warning-sign.png?300&nolink }} |Although there is protection circuitry to avoid reverse biasing the diode, it is not advisable to modulate under conditions where the current would be driven in reverse polarity. | | | {{ :warning-sign.png?300&nolink }} |Although there is protection circuitry to reduce reverse biasing the diode, negative voltages as high as -0.5 V can be applied. It is not advisable to modulate under conditions where negative voltage would be applied. Avoid low current set points with large-amplitude modulation.| |
| {{ :warning-sign.png?300&nolink }} |Make sure that the modulation input cannot drive the current above the maximum rated current for your device by [[slice:dcc#Setting the Current Limit|setting the Current Limit appropriately]]. | | | {{ :warning-sign.png?300&nolink }} |Make sure that the modulation input cannot drive the current above the maximum rated current for your device by [[slice:dcc#Setting the Current Limit|setting the Current Limit appropriately]]. | |
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External control of the SLICE-DCC is accomplished via a TTL trigger.((https://en.wikipedia.org/wiki/Logic_level)) 0 to 0.8 V TTL is low and 2 to V<sub>CC</sub> is TTL high. | External control of the SLICE-DCC is accomplished via a TTL trigger.((https://en.wikipedia.org/wiki/Logic_level)) 0 to 0.8 V TTL is low and 2 to V<sub>CC</sub> is TTL high. |
=== Trigger Out === | === Trigger Out === |
The Trigger Out on the back panel of the SLICE-DCC can be programmed to go high if an interlock (key or door) is opened. The screen shown in <imgref trigger_out> will be reached by touching I/O > Trigger Out. Checking either box will cause the Trigger Out to go high if either the door interlock or the key interlock is opened. | The Trigger Out on the back panel of the SLICE-DCC can be programmed to go high if an interlock (key or door) is opened. The screen shown in <imgref trigger_out> will be reached by touching I/O > Trigger Out. Checking the box will cause the Trigger Out to go high if either the door interlock or the key interlock is opened. |
<imgcaption trigger_out|Setting an output trigger>{{ :slice:dcc:output_trigger.png?430x254 |}}</imgcaption> | <imgcaption trigger_out|Setting an output trigger>{{ : slice:dcc:trigger_interlock.png?430x254 |}}</imgcaption> |
=== Trigger In === | === Trigger In === |
The input trigger can be used to turn on or off the current for either or both channels. From any screen, touch I/O > Trigger In. You will be presented with the window in <imgref trigger_in>. Select which channels you wish to control with the incoming trigger. In <imgref trigger_in_2>, current to CH 2 will be disabled if the Trigger In goes high. | The input trigger can be used to turn on or off the current for either or both channels. From any screen, touch I/O > Trigger In. You will be presented with the window in <imgref trigger_in>. Select which channels you wish to control with the incoming trigger. In <imgref trigger_in_2>, current to CH 2 will be disabled if the Trigger In goes high. |