LAMP GP-FLOOD 4744631 - Caterpillar

Illustration 1 g00629503
Joystick (1) Joystick (2) SchematicThe joysticks output a pulse width modulated signal (PWM). The PWM output of the joysticks in the center or neutral position is approximately 50 percent duty cycle. The PWM output of the joysticks at the extreme limits is approximately 5 and 95 percent duty cycle. The factory defaults of the calibration settings for the joysticks and the pedals are 5, 50 and 95 percent duty cycle. The joysticks can be calibrated independently or the joysticks can be calibrated as a group. The percentage values of the joysticks may be viewed with the Electronic Technician or via the message center.A diagnostic code is logged if the PWM output or the duty cycle are not within the limits that are shown in table 1.
Table 1
Signal     Minimum Value     Maximum Value    
Frequency     400 Hz     600 Hz    
Duty Cycle     2 %     98 %    
Table 2
Voltage Output    
Position of Joystick     Voltage    Duty Cycle    
Full Forward     1.2 to 1.9 DCV     5%    
Neutral     4.3 to 4.9 DCV     50%    
Full Rear     7.5 to 8.1 DCV     95%    
Full Left     1.2 to 1.9 DCV     5%    
Full Right     7.5 to 8.1 DCV     95%