Graphical Displays
StarBright User Manual
65
9.7
Exposure (for Pyroelectric Sensors)
The Exposure display shows the sum of the total energy of a series of pulses over a given time
period or number of pulses. This gives the total energy "exposure" over that time period. For
example, if the laser is pulsing at 30 times/sec at 1mJ per pulse and you measure the exposure
over 20 seconds, then the total exposure is 30 x 1 x 20 = 600mJ. The Exposure graph is available
when measuring exposure with Pyroelectric sensors.
Note:
When switching measurement mode out of Exposure, the graphic display will be changed
automatically to the previously defined graphical display.
shows a sample Pyroelectric Sensor Exposure graph, where you can configure
Measuring
,
Range
,
Wavelength
,
Pulse Length
,
Diffuser
, and
Threshold
settings, as described in
Setting Measurement Parameters When Using Energy Sensors
. See also
Figure
9-26 Pyroelectric Exposure Measurements
The Exposure display comprises the following components:
Parameter settings, the sensor’s name and serial number, and battery status indicator at the
top of the screen.
Total exposure (large numeric display) displayed prominently in center of screen
Elapsed time on lower left
Pulses received on lower right
Soft key legends at the bottom of the screen (for example, Menu, Start/Stop, Manual, Reset).
To set total energy exposure over a given time period or number of pulses:
1.
When using a Pyroelectric sensor, in
Exposure
mode, the graph type is “
Exposure"
(no need to
set it).
2.
Configure the settings, as described in
Measuring Total Energy Exposure
3.
Press
Start/Stop
to manually start or stop the exposure measurement.
4.
Press
Manual
(the rightmost soft key) and use the Navigation keys to select the options to end
).
5.
Press
Reset
to stop the exposure measurement and reset the total, pulse counter, and elapsed
time to 0.
