50
14. Move the focus lens carriage back and forth and check for drag.
15. Again, observe set screw gaps (Step 1) and adjust (Step 13).
16. Check for excessive play (Steps 8 and 9). Ideally, one should not feel any movement in the
final focus lens carriage. A slight movement (less than 1/64 of an inch) will be suitable for
applications such as engraving wood. For marking or engraving metals or other high
precision tasks, all excessive play must be eliminated.
N
OTE:
Do not bind up the motion system when tightening set screws. When the work
environment gets colder, the motion system tightens up. Therefore, warm the
room and machine up to the normal work temperature before adjusting the set
screws.
4.11
TICKLE ADJUSTMET
Tickle is laser control signal of small Pulse Width and Pulse Rate applied to the laser whenever
power to the system is turned on. The function of tickle is to keep the gas plasma in the laser
warmed up at all times to help the laser respond more quickly. Normally, the tickle won't need
changing. However, as the laser tube ages, the output stability may change. To compensate for
this, the tickle should be optimized. The best setting is maximum pulse width and minimum
pulse rate without unwanted leakage. This setting should provide even dot marking at low power
settings and not "leak" or burn material while the system is at rest.
1.
Turn on the system.
2.
Set Mode to Proportional Pulsing:
a.
Depress and release keypad "Mode" until lower left display is "P".
b.
Depress and release keypad "Store".
3.
Set Pulse Width to 200:
a.
Depress and release keypad "Program Select".
b.
Depress and release keypad "Pulse Width".
c.
Enter "200" on keypad.
d.
Depress and release keypad "Pulse Width".
4.
Set Pulse Rate to 2000:
