RTC
®
5 PC Interface Board
Rev. 1.9 e
10 Commands And Functions
481
innovators for industry
Ctrl Command set_sky_writing_para
Function
activates or deactivates Sky Writing mode and sets the corresponding parameters
Call
set_sky_writing_para( Timelag, LaserOnShift, Nprev, Npost )
Parameters
Timelag
Sky Writing parameter as a 64-bit IEEE floating point value
1.0 equals 1
µ
s.
Up to DLL 536, the following applies:
1/4: Sky Writing mode 1 will be activated
< 1/8: Sky-Writing (mode 1 or mode 2 or 3 when applicable) will be
deactivated
As of DLL 537, the following applies:
1/4: Sky-Writing mode 1 will be activated. From 1/8 to 1/4, Sky-Writing
will be activated, but
Timelag
= 0 will be internally applied.
< 1/8: Sky-Writing (mode 1 or mode 2 or 3 when applicable) will be
deactivated
LaserOnShift
Shift (for positive values: delay) of the point of time, where the laser
control signals are switched on as a signed 32-bit value (see
).
1 bit equals 0.5
µ
s
.
Negative values smaller than the complete run-in phase will be clipped,
therefore the following applies automatically
–
LaserOnShift
approx. (–40) ·
Nprev
(mode 1)
–
LaserOnShift
approx. (–20) ·
Nprev
(mode 2 or 3)
Nprev
This parameter (an unsigned 32-bit value) defines the duration of the run-
in phase (see
1 bit equals 10
µ
s
.
run-in duration /
µ
s = 20 ·
Nprev
(mode 1)
run-in duration /
µ
s = 10 ·
Nprev
(mode 2 or 3)
Allowed range: 0
Nprev
(2
32
–1)
Npost
This parameter (an unsigned 32-bit value) defines the duration of the run-
out phase (see
).
1 bit equals 10
µ
s
.
run-out duration /
µ
s = 20 ·
Npost
(mode 1)
run-out duration /
µ
s = 10 ·
Npost
(mode 2 or 3)
Allowed range: 0
Npost
(2
32
–1)