laser safety
8
Synrad
Firestar i401
operator’s manual
Agency compliance
Table 1
Class 4 safety features
Required by:
Feature
Location / Description
CDRH
EN60825-1
Keyswitch
1
Rear panel control
Yes
Yes
On/Off/Reset Keyswitch controls power to laser electronics.
Key cannot be removed from switch in the “On” position.
Shutter
Laser control
Yes
Yes
function
Functions as a beam attenuator to disable RF driver/laser output
when closed.
Shutter
Rear panel indicator (Blue)
No
No
indicator
Illuminates blue to indicate shutter is open.
Ready
Rear panel indicator (Yellow)
Yes
Yes
indicator
Indicates that laser has power applied and is capable of lasing.
Lase
Rear panel indicator (Red)
Yes
Yes
indicator
Indicates that Firestar is actively lasing. Lase LED illuminates when
the duty cycle of the Command signal is long enough to produce
laser output.
Five second
Firestar circuit element
Yes
No
delay
Disables RF driver/laser output for five seconds after Keyswitch is
turned to “On” or remote reset/start pulse is applied when Key-
switch is in “On” position.
Power fail
Firestar circuit element
Yes
Yes
lockout
1
Disables RF driver/laser output if input power is removed then later
reapplied (AC power failure or remote interlock actuation) while
Keyswitch is in “On” position.
Remote
Rear panel connection
Yes
Yes
Interlock
Disables RF driver/laser output when a remote interlock switch on
an equipment door or panel is opened.
Remote
Rear panel indicator (Green/Red)
No
No
Interlock
Illuminates green when Remote Interlock circuitry is closed.
indicator
Illuminates red when interlock circuitry is open.
Over
Firestar circuit element
No
No
temperature
Temperature shutdown occurs if temperature of the laser tube
protection
rises above safe operating limits.
Temp
Rear panel indicator (Green/Red)
No
No
indicator
Illuminates green when laser temperature is within operating limits,
changing to red when thermal limits are exceeded.
Warning
Firestar exterior
Yes
Yes
labels
Labels attached to various external housing locations to
warn personnel of potential laser hazards.
1 Not available on i401 OEM lasers