BeamTrack Sensors
StarBright User Manual
37
6.1
Setting Measurement Parameters
Measurements can be displayed in
or
graphical formats (by pressing
Menu >
Display
and choosing the
Graph Type
). Updating measurement parameters is performed in the
main measurement screen. A sample is shown in
To configure BeamTrack sensor settings for measuring position and size with power::
1.
Connect the relevant BeamTrack sensor to the StarBright.
2.
Set
Measuring
to
Track
. When measuring mode is set to
Track
, you can specify the expected
laser
Range
,
Wavelength
, and
Average
power period as you would when the measuring mode
is set to
Power
.
3.
Set
Range
to
AUTO
or to one of the manual ranges, as follows:
AUTO
: Select autoranging when the laser power is unknown or varies widely. In autorange,
you do not have to change scales. When the reading of the meter or bar is more than
100% of full scale, the range goes to the next higher one. The ranges are arranged in
factors of 1, 10, 100, and so on. When the reading falls below 9% of full scale, the range
changes to one range lower. This change only occurs after a few seconds delay. This
provides overlap (hysteresis) to keep the StarBright from flipping back and forth when
reading close to the end of the scale.
Manual range
: The correct manual range is the lowest one that is larger than the expected
maximum power of the laser. There are certain disadvantages to autorange, since it
changes scale even if you do not want it to do so. If you want to measure in the same
range all the time, it is better to use a manual range.
4.
Set
Wavelength
to the appropriate laser wavelength.
5.
Set
Average
to the period you wish to average power over or set to
NONE
to disable. This
feature is especially useful for lasers with unsteady output.
