Advanced Illumination Pulsar 320, Руководство оператора и инструкция по установке

Страница: 14 / 48

a d v a n c e d i l l u m i n a t i o n . c o m
P u l s a r 3 2 0 M a n u a l P u l s a r 3 2 0 M a n u a l
4.1.4 Period:
The length of time between two successive pulses or the
reciprocal of the pulse frequency.
4.1.5 Pulse Width: The length of time the light head is activated by the
Pulsar 320. This is typically measured between the 50% amplitude points of
the pulse.
4.1.6 Repetition Rate: The rate at which successive pulses are initiated.
Also known as frequency, which is measured in Hertz (cycles per second).
Repetition rate is usually multiple times per second.
4.1.7 Signatech II:
A proprietary feature of Ai light heads and the Pulsar
320. Signatech identifies the type of light head connected to the Pulsar 320
and maintains safe operating limits for each type. The Pulsar 320 can be set
so that Signatech preferentially limits pulse current, pulse width, or period to
remain within the safe power dissipation range of the light head.
4.1.8 Strobe Modes:
The strobe mode is used to “freeze” a moving item
at a particular moment in time. Typically, with LED illumination sources,
the strobe mode involves driving the light head with a high current, short
duration pulse. This provides a very intense light output pulse. As long as
the duty cycle is kept short, no damage to the LEDs occur as a result of the
high current.
4.1.9 Trigger:
The signal which initiates an output from the Pulsar 320 to
the light head. The trigger signal is normally generated by an external source
such as a camera or other sensor. Several modes of trigger operation are
provided for in the Pulsar 320. The trigger may start on either a rising or
falling edge. For test purposes, the Pulsar 320 also has an internal trigger
source.
4.1.10 Trigger Delay: Certain applications require that a known, fixed
time elapse between the receipt of a trigger signal and the initiation of
an output pulse. This is the trigger delay. For example, if the trigger signal
is received from a position sensor, prior to the arrival of the item to be
inspected, a delay to account for that transit time would be introduced. If
the trigger signal originates from the camera at the start of the shutter
opening, a short delay might be introduced to assure the shutter is fully
open or that the illumination pulse occurs elsewhere within the frame time.
14