Table of Contents
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Combining everything together leads to the following wiring diagram. Back-illumination LEDs are also included here as a way to simplify their connections, in that their cabling could be included within the source select shutter cables.
Details on resistors - only Archon ones were changed
The same Galil model is used for the Ca H&K exposure control. Since similar (and fewer) devices are being controlled by the Galil for that system, the same 12V-to-5V adapter PCB was utilized, with just some many of the pins going unused.
Details on resistors - all were changed
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12V to 5V Voltage Divider Board Details
Description | File | |||||
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12V to 5V Voltage Divider Board Schematic |
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TTL Details per Device
Description | Device | Notes |
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Shutter Controller | Uniblitz VED24 | Screengrab from VED24 manual:  Note the VED24 manual is somewhat confusing about what the PULSE INPUT trigger needs. I clarified with Uniblitz and they replied with this description: “When the input signal goes Low [0V], the shutter will Open . The input signal should stay Low[0V] for the duration of the desired exposure time and be at least a minimum duration of the pulse width needed to make sure that shutter will properly ‘Open’ for the VED24. In the case of the DSS25B series shutter the minimum exposure pulse would need to be greater than 35ms. When the input signal is removed and/or return to the High[5V] state the shutter will close. The shutter will stay in the Close position until the Pulse Input signal goes Low[0V]. The VED24 Driver, when configured for the appropriate shutter device, will provide the fixed pulses need to ‘OPEN/CLOSE” the bi-stable shutter. Let me know if I can be of any further assistance.” Regards, Adam J. Lamb |
Ca HK Detector | Andor Newton | Screengrab from Andor Newton manual:  |
Archon Controller | STA Archon | From the Archon manual: “The Trigger In circuit is shown in Figure 4. A 3.3V input at 2 mA is sufficient to trigger the optoisolator. Inputs up to 10V are tolerated.” |
Exposure Meter | SBIG Aluma 47-10 |  |
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