User manual LOGITECH 3D MOUSE & HEAD TRACKER

[. . . ] 3D Mouse & Head Tracker Techical Reference Manuel 3D Mouse Head Tracker Logitech Inc. , Fremont, CA 94555 ©1992 by Logitech, Inc. Published 1992 Printed in the United States of America No part of this document may be copied or reproduced in any form or by any means without the prior written consent of Logitech, Inc. However, Logitech makes no warranties with respect to this documentation band disclaims any implied warranties of merchantability and fitness for a particular purpose. Logitech assumes no responsibility for any errors that may appear in this document. [. . . ] Right-Hand Rule Showing the X, Y, Z Axis The second right-hand rule allows you to point your thumb in the positive direction of any axis and to curl your four fingers to represent positive rotation about that axis. In Figure 5-3, the thumb is pointed along the positive X axis, and the four fingers curl in the direction of positive rotation about that axis. Positive direction of rotation about the X axis Figure 5-3. Right-Hand Rule Showing Rotation About the X Axis 25 Chapter 5 Origin Points and Reference Axes The positional and orientation data generated by the control unit are based on the 3D origin points and reference axes. In Figure 5-4, the transmitter's origin point and reference axes are defined by the following: · XT is an imaginary reference axis that passes through the center of the transmitter's lower left speaker and through the center of the transmitter's lower right speaker. (Only the positive direction of this is shown in Figure 5-4. ) · YT is an imaginary reference axis passing through the center of the transmitter's top speaker and is perpendicular to XT. · ZT is an imaginary reference axis perpendicular to both XT and YT. · The transmitter's origin is the point where XT, YT, and ZT intersect. Also in Figure 5-4, the receiver's origin point and reference axes are defined by the following: · XR is an imaginary reference axis passing through the center of the receiver's lower left microphone and through the center of the receiver's lower right microphone. (Only the positive direction of this axis is shown in Figure 5-4. ) · YR is an imaginary reference axis passing through the center of the receiver's top microphone and is perpendicular to XR. · ZR is an imaginary reference axis perpendicular to both XR and YR. · The receiver's origin is the point where XR, YR, and ZR intersect. Note The transmitter's and receiver's origin points and reference axes described above also apply to the 3D Mouse transmitter and receiver. 26 System Operation YT Transmitter XT Origin YR ZT Receiver XR Origin ZR Figure 5-4. Transmitter and Receiver Origin Points and Reference Axes Positional X, Y, Z Data Positional data is the distance between the transmitter's and receiver's origin points. This is the distance the receiver's origin point is to the left or right (along the XT axis) of the transmitter's origin point (see Figure 5-4). This is the distance the receiver's origin point is above or below (along the YT axis) the transmitter's origin point-minus a 12-inch offset (see Figure 5-4). When the receiver is sitting on the desktop level with the base of the transmitter, the Y data will be approximately a negative 12 inches. This is the distance the receiver's origin point is away (along the ZT axis) from the transmitter's origin point-minus an 18-inch offset (see Figure 5-4). When the receiver is 6 inches away from the transmitter the Z axis, the Z data will be approximately a negative 12 inches. Orientation Data Orientation describes the rotation of the receiver with respect to the transmitter. The orientation is described using the aeronautical terms: Pitch, Yaw, and Roll. Pitch orientation is positive or negative rotation about the receiver's X axis. Yaw orientation is positive or negative rotation about the receiver's Y axis. Roll orientation is positive or negative rotation about the receiver's Z axis. [. . . ] · Check that AC power is available at the AC outlet. 59 Chapter 7 Can I connect a Head Tracker and 3D Mouse receiver to one computer and track them both? Yes. To connect multiple control units, see "Connecting Multiple Control Units" in Chapter 4. I've connected multiple control units properly using the Master/Slave cable. Why won't the transmitter work? Even though you've connected the control units properly, you may have connected the transmitter to the wrong control unit. Ensure that you've connected the transmitter to the "Master" control unit. [. . . ]