
B–70115EN/03
4. INSTALLATION
90
CAUTION
1 If the oscillator is started with an incorrect parameter value
specified, there is a risk of the oscillator being damaged or
destroyed. Be particularly careful when entering and
checking parameter values.
2 Some parameters may require modification to, for example,
suit the operating state of the oscillator or enable
maintenance. When modifying the parameters, the user
should record all changes (including dates, parameters
before modification, parameters after modification, and
reasons for modification) so that old parameters and invalid
parameters are not used.
(8)Discharge aging
If the oscillator is left unused for a long time (three days or more), or
if the laser gas circulating system has been opened to the atmosphere
(for example, to clean the mirrors or replace gas system components),
aging is required. This involves warming up the discharge tubes and
circulating gas by performing internal discharge to output absorbent
contaminants as gas. If the laser gas circulating system has been
opened to the atmosphere, perform a leakage check before attempting
aging. The aging procedure is described below.
1) Modify the parameters listed below.
(Be sure to record the settings. The settings may be different from
the data sheet values.)
Bit 3 of parameter No. 15000 (16–L, 16i–L),
bit 3 of parameter No. 200 (0–L):
0 ³ 1 (Internal discharge is enabled in manual mode.)
Bit 4 of parameter No. 15000 (16–L, 16i–L),
bit 4 of parameter No. 200 (0–L):
1 ³ 0 (Three–minute correction is not performed.)
Bit 0 of parameter No. 15002 (16–L, 16i–L),
bit 5 of parameter No. 3979 (0–L):
0 ³ 1 (Internal discharge is enabled in automatic
operation mode.)
Bit 2 of parameter No. 15003 (16–L, 16i–L),
bit 2 of parameter No. 3979 (0–L):
1 ³ 0 (Evacuation is not performed after the RUN
OFF.)
Parameter No. 15201 (16–L, 16i–L), parameter No. 232 (0–L)
Setting ³ 0
Parameter No. 15208 (16–L, 16i–L), parameter No. 233 (0–L):
Setting ³ 0 (Output feedback is turned off.)
Parameter No. 15209 (16–L, 16i–L), parameter No. 234 (0–L):
Setting ³ 0 (Output feedback is turned off.)
Parameter No. 15242, No. 15243 (16–L, 16i–L),
parameter No. 236 (0–L):
Setting ³*100