The SH-2 shutter card allows you to control the operation of two ASI shutters, and takes up a single slot in the PWR-ASI-6 power supply. Typically the SH-2 is used along with other modules, such as the FW-1000 filter wheel controller.
Shutters connected to the SH-2 can be controlled with the front panel toggle switch, with TTL inputs via BNC connectors on the front panel, by a foot switch connected to the same BNC connectors, and with RS-232 commands via the FW-1000 filter wheel controller (if one is installed in the same cabinet with the SH-2).
|Methods of Control||Serial Interface, TTL or Footswitch, Front Panel Toggle Switch|
|Number of Shutter Channels per Card||2|
|0%-to-100% Opening Time from Trigger (N.C. shutter)||8 ms|
|100%-to-0% Closing Time from Trigger (N.O. shutter)||7 ms|
|Minimum 50%-to-50% Open Time (N.C. shutter)||5 ms|
|Minimum 50%-to-50% Closed Time (N.O. shutter)||13 ms|
|Minimum Total Window 0%-to-0%||14 ms|
|Minimum Trigger Width||7 ms|
|Peak Unsustained Repetition Rate||40 Hz|
|Maximum Sustained Repetition Rate||5 Hz|
* using 25 mm aperture shutters equipped with standard black Teflon® coated shutter blades.
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