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The output message and baud rate can be configured by the user. See Appendix B for more
information.
A text header is sent by the SPS during initialization that identifies the unit by part number and
serial number and gives the date of last calibration. Additionally, a line of text characters that
identifies the data channel columns is sent if the serial output is set to ASCII decimal. This header
message can be suppressed or restored by sending a "*" command from the interfacing computer.
This change can also be made the default by sending a quote (") command.
Data transmission sent by the SPS-P230 can also be suppressed or restored by sending a "+"
command from the interfacing computer. This change can be made the default setting by sending a
quote (") command.
Joystick Controller
The Joystick Controller has a
joystick, four buttons, four led
indicator lights and three
connectors. These items are
explained below.
Joystick
The joystick positions the SPS-P230
payload. A left or right movement
of the joystick controls the pan
motion of the payload while an up
or down movement controls the tilt.
The joystick is also used to correct
any rate bias in the system, which is
discussed later. When the joystick
is commanding the SPS-P230 to
move in the pan axis, the green pan
indicator light will be illuminated.
Similarly, when the system is
moving in the tilt axis, the green tilt
indicator light will be illuminated.
Power Button
The power button turns the SPS-P230 on and off. When the system is powered on, the power
indicator light will be illuminated.
Position Mode Button
This button toggles the sensor between position mode and inertial modes of operation. When the
platform is operating in position mode, the LED on the position mode button will be illuminated.
For more information on these to modes, see the Pointing Angle section earlier in this manual.
Watson Industries, Inc.
SPS-P230 Rev A 10/17/2017
14
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