STARTUP AND SHUTDOWN OF THE SYSTEM
LSM 710 and LSM 780
Carl Zeiss
Startup of the System
Systems
16 M60-1-0025
e
02/2010
•
First turn the key switch at the power supply of the argon laser from Standby to On. The laser is then
held in idle mode for about 5 minutes independent of the run-idle-switch.
•
Flip the run-idle-switch from IDLE to RUN (run-idle-switch button (Fig. 3/
8
) up).
•
After switching to RUN mode the laser power increases up to full power within 50 s (provided the
5 minutes idle time at start up are already over). The time it takes to get to the full power mode is also
dependent on the setting of the potentiometer, lower power levels require less time for ramp up.
•
The green LED lights up if the set power is stabilized and the laser is ready to use (Fig. 3/
9
).
•
The tube current can be set with the light control potentiometer (Fig. 3/
4
). The adjustment range is
from standby (left stop) to 7 A (green LED (Fig. 3/
9
)); tube currents greater 7 A will show a red LED
(Fig. 3/
3
).
•
Warm up time after cold start to keep the specification for long-term stability is around 1 h.
The red LED indicates the power range which is critical for the lifetime of the laser. An operation
in this power range is possible for a brief period, but not permanently.
Caution: Even in idle mode laser radiation is emitted.
•
The 514 nm laser line becomes available at a tube current of 5 A. It is recommended to use this line at
6 A. Tube currents higher than 6 A will decrease the lifetime (red LED)!
•
The tube current can be monitored via the PIN 4 (Fig. 3/
5
) with a voltmeter. The output can be
measured in mV/A; means 6 A will be shown as 0.6 V.
•
If the laser is not active over a longer time (e.g. 1 h), it should be set to standby. This protects the laser
and increases the lifetime. It is better, to have the laser for a longer time in standby mode, than to
switch it on and off several times per day.
The specified lifetime applies for a nominal power of 25 mW (or 40 mW) for all lines, with an
operating regime of < 12 h/day. The required tube current might increase over time.
