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Home Button
Pressing the home button will command the SPS-P230 to return the payload to a predetermined
Home position. The platform will stay at this position regardless of vehicle motion. Any joystick
input will exit the home position. The home position is set through the SPS-P230 menu system. See
Appendix B for more information.
Note: When the SPS-P230 is first powered on, it will go to the home position.
Rate Bias Button
The rate bias button allows the user to eliminate any rate bias motion from the platform using
joystick inputs. Pressing this button toggles the sensor between normal operation and a special rate
bias adjustment mode. When the SPS-P230 is in rate bias adjustment mode, the LED on the rate
bias button will be illuminated. When in this mode, joystick motions are added to the system as
bias adjustments. Moving the joystick in the pan axis will adjust pan rate bias, while joystick tilt
motions will adjust tilt rate bias.
Joystick Controller Pinout
The joystick controller has three connectors mounted to the rear panel as shown below:
5
9
9 Pin Female D-Sub
RS-232 Interface
Pin Description
1
N.C.
2
RS-232 TXD
3
RS-232 RXD
4
N.C.
5
Signal Ground
6
N.C.
7
N.C.
8
N.C.
9
N.C.
Watson Industries, Inc.
4
3
2
1
8
7
6
MS3102A-16-1S
Interface to Platform
Pin Description
A
Power Ground
B
+28VDC Power
C
RS-422 RX+
D
RS-422 RX-
E
Signal Ground
F
RS-422 TX-
G
RS-422 TX+
A
F
B
G
E
C
D
SPS-P230 Rev A 10/17/2017
15
A
D
B
C
MS3112E-8-4P
Power
Pin Description
A
N.C.
B
+28 VDC Power In
C
N.C.
D
Power Ground
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