User Manual Part 1

IS-900 User Guide Page 43 of 159
The first three SoniStrips mounted along the top and around the perimeter of the CAVE walls, are
angled in towards the CAVE center at 45 degrees. The remaining three SoniStrips are mounted
with the normal vectors pointing straight down on each side of the center ceiling mirror and along
the back side of the CAVE. The mounting of these three interior SoniStrips may require the
addition of two U-Channels, positioned front to back, on each side of the mirror at the top, center
of the CAVE.
Each SoniStrip is wired in sequence with the bottom left corner connecting to Port 5 of the IS-900
Processor. The SoniStrip ID numbers are defined by the wiring and port number and become a
sequence with numbers from 5001 to 5018.
With three perimeter SoniStrips angled at 45 degrees toward the CAVE center and the three
interior SoniStrips pointing straight down in the Z-axis, the normal vectors then for the installation
and wiring shown in Figure 24 become:
SoniDisc ID Nos. Normal Vectors used in Constellation Array
5001 – 5003 0.000, 0.707, 0.707
5004 – 5006 -0.707, 0.000, 0.707
5007 – 5009 0.000, -0.707, 0.707
5010 – 5018 0.000, 0.000, 1.000
3.3.4. SoniFrame and SoniWing
Please refer to the IS-900 Product Supplement Manual titled “IS-900 Fixed Frame Assemblies—
SoniFrame & SoniWing”, Doc. No. 072-00088-0G04, for details on the assembly and set up of
these pre-calibrated SoniDisc Constellation Arrays.
The InterSense installation and testing software, ISDEMO, has commands in the Constellation
Tool that allow rapid installation and calibration of the SoniWing and SoniFrame. This tool
automatically generates both the position and normal vectors for these fixed frame, factory
calibrated SoniDisc Constellation options. Refer to Section 14.7 for information about using
ISDEMO to install SoniWing and SoniFrame Constellation Arrays.
3.4. Measurement and Calibration of SoniStrips
Once the SoniStrip Constellation array is installed and wired, the next step is to accurately
measure the absolute positions of each SoniDisc in the array.
Two methods can be used to calibrate the installed SoniStrip beacon array:
1. Optical Surveying (sighting with a surveying tool, i.e. a Nikon total station). This is the most
precise method of calibration. Use this method for installations in all virtual environments.
2. Direct Measurement (hand measurement with a tape measure). This technique is not
recommended for most installations; but, can be used to quickly test an IS-900 installation
when the first technique cannot be done. ISDEMO has SoniStrip positioning and alignment
tools that help when performing a quick installation using the direct measurement approach.
Refer to Section 14.7 for details.
NOTE: In calibrating the SoniStrip constellation array, it is very important that the
measurements are as accurate as possible. Accurately measuring the SoniStrip beacon