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A Uniblitz VED24 shutter controller is located within the AO Rack, and it controls a Uniblitz DSS25B bi-stable shutter within the Ca HK spectrometer enclosure.
The trigger signal used to open and close the shutter is generated by the Ca HK Galil Controller.
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Relevant Devices
Description | Qty | Source | Part Number | Notes |
|---|---|---|---|---|
Shutter Controller | 4 | Uniblitz | VED24 | |
Shutter | 4 | Uniblitz | DSS25B1T0 | 25mm Optical Shutter Bi-stable (only requires power for transitions) Ordering options:  |
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Relevant Functional Block Diagram
Complete Ca H&K Spectrometer electronics schematic (shutter controller is near the top right):
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Cable Details
Cable | Qty | Details |
|---|---|---|
OTS BNC Cable | 1 | 50-Ohm impedance BNC cable, 6 feet long |
Uniblitz-Supplied 510F Cable | 41 | Ships with Uniblitz VED24 Shutter Controller |
Uniblitz-Supplied 5M203D Cable | 41 | Ships with Uniblitz VED24 Shutter Controller |
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The function switch has the following settngssettings:
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For the DSS25B shutters the function switch and pulse duration settings are:
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Note also that there is also a toggle switch on the front that sets the ‘Normally Open’ or ‘Normally Closed’ polarity of the switch (second from left in image above). The manual is not clear on how this affects a bi-stable shutter. For consistency within KPF, all shutter controllers should be set to ‘N.O.’. Each KPF VED VED24 has a label on the front to indicate this, as show in the picture above.
To manually operate a shutter, one can click the N.O./N.C. switch back and forth. However, be sure to leave it at ‘N.O.’ when done.
Two cables are needed to connect the VED24 and the DSS25B shutter, as shown in the photo of Ashley’s lab setup below.
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Relevant Datasheets & Manuals
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