Precision II Operation and Maintenance Manual C
3-26
996-0255 rev. b
• harmonic generator control
• shutter control
• Q-switch delay
• charging and firing control
• mode selection
• rep rate
• pulse division
• single shot
• storage & retrieval of user programs
• shot counter display.
Rack mount controls
The CU601C provides all of the signals required to control up to four
power units. The CU601C initiates charging of the capacitor banks by
means of signal exchange with the power units under control. The
CU601C also provides cooling group interlocks, which sense water
temperature, water level and water flow. A cooling group interlock
violation halts the laser operation and reports the interlock violation to
the remote box, see drawing on next page.
During a charge sequence, the charge command is sent to the power
units to charge the capacitor banks. The CU601C then looks for an EOC
(End of Charge) signal from the power units. When all EOC signals are
received, the CU601C then is ready to send a fire command. If the
CU601C fails to receive an EOC, the CU601C reports an “EOC failure” to
the remote box and halts any further fire commands.
CU601C front
& rear panels.
: : : : :
HP/shtr
RS232 YAG remote
: : : : :
: : : : :
PU1
J1
F 1 F2
PU4PU3
Q-sw.
A B
power on
CU601C
laser
on
off
on
sync
out
: : : : : : : :
crys. oven 1
crys. oven 2
Front panel, CU601C
Rear panel, CU601C
: : : : :
: : : : :: : : : :: : : : :
.
220Vac
PU2
laser
interlock
CU sync in
externals
J3
cooling
interlock
: : : : :
: : : : :
ext. Q-sw.
in
24V
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