
B–70115EN/03
4. INSTALLATION
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2) If the laser gas flow rate is abnormal, perform adjustment as
described in Section 9.5.
3) Reset the values of the bits of parameter No. 15025 [201]
through parameter No. 15028 [203] to their original values.
This completes the check.
(15)Perform laser oscillation to achieve discharge aging. If the oscillator
is left unused for one week or more, discharge aging is required. See
Section 9.8 for details of discharge aging.
(16)Check the oscillation characteristics and output. See Section 4.3 (1)
for details of the check method.
D Check items
1) Oscillation characteristic check :
S Check that the correction coefficient is 1100 or less.
S Check that the discharge voltage is within the factory–set
value plus 200 V.
If the correction coefficient or discharge voltage exceeds the
maximum, repeat discharge aging.
2) Discharge margin check S Check that a margin is provided.
3) Voltage margin check S Check that no alarm is issued.
(17)Check the laser beam mode. For details of the check method, see
Section 4.3 (4).
D Check items
1) Check that there is no significant difference from the mode
specified in the data sheets attached to the oscillator.
2) Check that the mode shape is perfectly circular.
The beam mode (resonator alignment) may be displaced due to
transportation and storage. In such a case, make an adjustment
according to Section 11.2.1.
(18)Set the hour meter.
Set 50 Hz for those localities where the power supply frequency is
50 Hz. Set 60 Hz for those localities where the power supply
frequency is 60 Hz.
(19)Optical axis adjustment
To perform optical axis adjustment as part of the installation, adjust
the base table of the oscillator. Never place a heavy object on the
beam outlet plate. Moreover, never make a direct mechanical
connection between this plate and a part on the mechanical side.