Scanlab RTC 5 PC Interface Board Installation And Operation Manual page 445

Delayed Short set_laser_pulses
List Command
Function defines the output period and the pulse lengths for the laser signals LASER1 and LASER2
for "laser active" operation.
Call
set_laser_pulses( HalfPeriod, PulseLength )
Parameters
HalfPeriod
PulseLength
Comments • Note that half the period length must be specified for HalfPeriod (see
page 131
• If HalfPeriod = 0 and/or PulseLength = 0, no laser signals will be outputted.
• If the softstart mode is used (see
(this is not automatically checked). This value corresponds to a laser pulse frequency of
approx. 308 kHz.
• If PulseLength is larger than the output period (2 · HalfPeriod), the laser will be perma-
nently on.
• The signal level is defined via set_laser_control.
• The set_laser_pulses command is also available as the control command
set_laser_pulses_ctrl.
• The set_laser_pulses command is largely identical to the RTC
command, but has less parameters.
® ®
RTC 4 RTC 5 new command
®
In RTC 4 compatibility mode, parameter values must be specified in units of 1/8 µs (the
1 µs time base – see
internally converted to 1/64 µs units (i.e. multiplied by 8). The permissible range of values
is correspondingly smaller (the smallest reasonable value for HalfPeriod with softstart
mode is then 13).
References set_laser_pulses_ctrl,
Ctrl Command set_laser_pulses_ctrl
Function same as
Call
set_laser_pulses_ctrl( HalfPeriod, PulseLength )
Parameters
HalfPeriod
PulseLength
Comments • see set_laser_pulses
® ®
RTC 4 RTC 5 new command
®
In RTC 4 compatibility mode: as
References set_laser_pulses,
®
RTC 5 PC Interface Board
Rev. 1.9 e
10 Commands And Functions
half of the output period in bits as an unsigned 32-bit value
1 bit equals 1/64 µs. Allowed range: [0 ... (2
Pulse length of the laser signals LASER1 and LASER2 in bits as an
unsigned 32-bit value.
1 bit equals 1/64 µs. Allowed range: [0 ... (2
and figure 49 on page
page
set_laser_timing
set_laser_timing
set_laser_pulses (see above), but a control command
half of the output period in bits as an unsigned 32-bit value
1 bit equals 1/64 µs. Allowed range: [0 ... (2
Pulse length of the laser signals LASER1 and LASER2 in bits as an
unsigned 32-bit value.
1 bit equals 1/64 µs. Allowed range: [0 ... (2
set_laser_pulses
set_laser_timing
134).
135), HalfPeriod should not be smaller than 104
– is no longer supported). They will then be
32
1)]
–
32 –
1)]
figure 48 on
®
4's set_laser_timing
32 –
1)]
32
1)]
–
445