Schematic Layout
Note that not shown on the diagram above are two other shutters that will be connected to this same basement Galil as shown below.
Given these shutters also d
Max Signal Voltages Allowed by Devices
Description | Device | Source |
|---|---|---|
Shutter Controller | Uniblitz VED24 | Email from Uniblitz: Steven, It would be recommended to use 5VDC for the TTL ‘High’ and 0VDC for TTL ‘Low’ when interfacing to the VED24 drive controller’s Pulse Input BNC. Regards, |
Ca HK Detector | Andor Newton | Email from Andor: Hi Steve, 12 volts will damage the external trigger. Please use between 3.3 to 5 volts TTL. Kind Regards, |
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.” |
The Pulse Input BNC of the VED24 driver functions as such:
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/COSE” the bi-stable shutter. Let me know if I can be of any further assistance.
Regards,
Adam J. Lamb | ||
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