iv
General Information
Safety and Preparation for Use
Dangerous voltages, capable of causing injury or death, are present
WARNING
in this instrument. Use caution whenever the instrument covers
are removed. Do not remove the covers while the unit is plugged
into a live outlet.
Never connect any of the shutter output ports to anything besides an
CAUTION
SR470 Series Laser Shutter head.
Line Voltage
The universal input power supply of the SR470 accommodates any
voltage in the range 90 VAC to 260 VAC, with a frequency in the range
47 Hz to 63 Hz.
Line Cord
The SR470 has a detachable, three-wire power cord for connection
to the power source and to a protective ground. The exposed metal
parts of the instrument are connected to the outlet ground to protect
against electrical shock. Always use an outlet which has a properly
connected protective ground.
The shields of the six rear-panel BNC ports, the rear-panel Chassis
Ground binding post, and the metal chassis of the instrument are all
connected to Earth through the power-line-outlet ground.
Line Fuse
There are two line fuses internal to the SR470 that may not be serviced
by the user.
If no front panel LEDs are lit when line power is applied and the
power switch is in the “on” position, contact Stanford Research Sys-
tems.
Service
Do not attempt to service or adjust this instrument unless another
person, capable of providing first aid or resuscitation, is present.
Do not install substitute parts or perform any unauthorized modi-
fications to this instrument. Contact the factory for instructions on
how to return the instrument for authorized service and adjustment.
SR470 Shutter Controller
