The SR474 Four-Channel Driver interfaces with up to four shutter heads. Rear-panel TTL level inputs are provided for your external timing signals.
Each of the four channels can be set for normally open or normally closed operation.
Each channel has a front-panel State button which allows you to manually change the shutter state.
The channel Source buttons set each channel to manual, external TTL or remote state control.
Each channel also has an Align button that drives its shutter head at a 1 Hz rate making laser alignment simple.
The Global Control section of the front-panel allow you to set or reset all channels to their "normal" states.
As with the SR470, remote operation is supported with GPIB, RS-232 and Ethernet computer interfaces.
All instrument functions can be controlled and read over any of the interfaces.
Shutter faults are automatically detected and result in audible, visible and electronic alarms.