1 – 2
Getting Started
1.1
Introduction to the Instrument
The SR474 Four Channel Shutter Driver is ideally suited for appli-
cations requiring one or several laser shutters in situations where
external timing or control signals are available.
1.1.1
Overview
The basic function of the SR474 Four Channel Shutter Driver is to
provide power, manual control, and I
/
O interfaces to between one
and four SR470 Series Laser Shutters. The shutters connect to outputs
on the rear panel of the instrument, and can be controlled by rear-
panel TTL level inputs or manually from either the front panel or
remote interfaces.
1.1.2
Power-on State
The SR474 stores its operation state in non-volatile memory, includ-
ing the configurations of the four shutter channels and the remote
interfaces.
At power-on, the SR474 will return to its previous configuration after
a brief system check and initialization.
1.2
Front-Panel Operation
The front panel of the SR474 (Figure 1.1) provides simple controls
for the operator and displays the shutter states at a glance. The
panel is divided into five sections: four identical sections that each
correspond to a single shutter channel, and a Global Control section.
1.2.1
Individual channel controls
The four shutter channels can be individually controlled and moni-
tored through the front panel sections labeled “
Channel 1
” through
“
Channel 4
.” The interface for each channel is identical.
The top half of the channel interface has two keys,
State
and
Enable
along with status indicators for four possible states that
are possible for each shutter channel:
OPEN
,
CLOSED
,
OFF
, and
FAULT
. These states are mutually exclusive and in most cases ex-
actly one of the four indicators is lit.
The bottom half of the channel interface has the key
Source
and as-
sociated indicators for selecting and monitoring the mode of channel
control. The
Align
key provides automatic opening and closing to
assist with mechanical alignment of your shutter head.
SR474 Four Channel Shutter Driver
