Chapter III – Subassemblies
3-27
C
996-0255 rev. b
Laser bench control
The CU601C provides for all of the signals and/or dc power to control
the crystal heaters, harmonic generators, shutter and Q-switch. Harmonic
generator limits are reported to the remote box and further movement is
prevented in the limit direction. The CU601C controls Q-switch delay
timing. The CU601C provides laser bench interlocks, in which the
CU601C senses shutter, laser head temp and dye laser (if used) interlock
violations. Laser bench interlock violations halt the laser operation and
report the violation to the remote box.
2. Structural organization
The CU601C has 6 circuit boards and two low voltage open frame linear
power supplies. The large circuit board is the microprocessor logic board.
The remaining circuit boards are for accessory control, front panel
variable sync, crystal oven heaters, power supply and externals.
CU601C front panel indicators, controls and interfaces
a) Power LED
When the power on LED is lit, this indicates that the ac
line voltage has been applied to the CU601C.
b) LASER ON lamp
The Rectangular incandescent lamp has various functions
listed below:
Power on delay -
Lamp will flash approximately once per
second for six seconds and then remain
on. Turning front panel key switch from
off to on initiates this sequence. A high
pitch beep will occur once during the
beginning of this mode. The laser is active
and operating after this sequence.
Interlock violation -
Lamp will flash rapidly many times and
the pause for about two seconds repeating
this over and over until interlock violation
is corrected and the key switch is cycled
from OFF to ON. A medium pitch beep
will occur once every cycle during this
mode. Laser operation is halted during
this mode.
Loss of remote box communications -
Lamp will remain on but momentarily
turn off approximately once every 9
seconds until communications with
charging end of
charge
shutter
open
Q-sw.
active
1
1
2
2
program
program
parameter
parameter
shutter
remote/
local
store parameter
select
charge start
activate reset fire stop
Q-sw.
on/off
auto/
manual
harmonic
generator
RB601 keyboard
Continuum
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