ASD Document 600540 Rev. J 87 FieldSpec® 3 User Manual
www.asdi.com Appendix B Reference Information
• GPS->Settings... pull-down menu item.
• Alt+G, S key combination.
RS
3
requires the output of the GPS device to be in the National Marine
Electronics Association (NMEA) format. Check your GPS device
documentation for output and port settings.
Normally, the Baud rate (4800), Data bits (8), Parity (none), and Stop bits (1)
settings will remain the same as what is displayed in the window. The Write
to log file is checked by default. When this field is checked and the GPS
fixed data is enabled, an entry will be made to a daily log file (i.e.
050302gps.log) when a spectrum is saved.
Step 2In the GPS Settings dialog box, enter communication settings appropriate
for your instrument controller’s port intended for use as well as the GPS
device.
Note: The RS
3
settings on the instrument controller and the ports that are
used must match the actual port used as well as the settings of the
GPS device.
Step 3 Connect an appropriate cable between the instrument controller’s port and the
GPS device.
You may need a serial-USB converter depending upon the instrument
controller and GPS device.
Step 4 Enable the GPS functionality in the RS
3
application by selecting either:
• GPS->Enable... pull-down menu item.
• Alt+G, E key combination.
Step 5 Refer to the manual of your actual GPS device for further instructions
regarding usage and configuration.
B.1.20 What does a broken fiber mean?
The fiber-optic cable is made up of fifty-seven (57) randomly distributed glass
fibers.
• 19 fibers are 100 micron for the VNIR region.
• 19 fibers are 200 micron for the SWIR1 region.
• 19 fibers are 200 micron for the SWIR2 region.
Therefore, a single broken fiber results in a ~5% reduction in the signal in a
given region.
Therefore, a single broken fiber in the internal cable results in a ~5%
reduction in the signal in a given region.
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