Scanlab RTC6 PCIe Board - Variable Jump Delays

RTC6 boards
Doc. Rev. 1.0.21 en-US
7 Basic Functions for Scan Head Control and Laser Control
148
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Variable Jump Delays
With short jumps, the scan head often does not reach
the full jump speed. Then shorter Jump Delays are
sufficient for settling of the mirrors:
• “Variable Jump Delays“
For this, there is:
• “Variable Jump Delays“ mode
“Variable Jump Delays“ mode is switched on by
JumpLengthLimit > 0 (at set_delay_mode and
set_delay_mode_list).
Then the RTC6 PCIe Board inserts a linearly
interpolated Jump Delay between MinJumpDelay (from
set_delay_mode or set_delay_mode_list) and Jump
(Jump Delay from set_scanner_delays) for
jump lengths between 0 and Jump length limit, see
Figure 36.
With jump lengths larger than JumpLengthLimit a
“full” Jump Delay is always inserted.
Notes
• With “Variable Jump Delays“ mode, total
marking time is reduced, especially when there
are many short jumps.
• “Variable Jump Delays“ mode is switched off by
JumpLengthLimit = 0 (at set_delay_mode and
set_delay_mode_list).
• After jump vectors of length 0, the duration of
“Variable Jump Delays“ is 0.
• The “minimum” Jump Delay should not be larger
than the “normal” Jump Delay. Otherwise,
“Variable Jump Delays“ can become very large.
36
“Variable Jump Delays“ mode: Jump Delay value depending on the jump length.
0
Jump length
Jump delay
“Full” Jump Delay
= Jump value of set_scanner_delays
“Minimum” Jump Delay
= MinJumpDelay value of
set_delay_mode or
set_delay_mode_list
Jump length limit
= JumpLengthLimit value of set_delay_mode or
set_delay_mode_list
Jump Delay = constant