Universal User Manual 14 V1.4 September 2012
Note: A high percentage of problems are a direct result of poor cable, corrupt DMX control signals and lack of suitable signal
termination.
2.7 Technical overview
The colour transport system employs an opto-electronic system for accurate positioning of the gel. When the unit initially
receives power it will go through a calibration sequence. The purpose of the initial calibration sequence during power up is to
determine the total length of the gel string and therefore the position of the different gels.
Note: Over time the gel string may warp slightly. This may alter the positions of the gels relative to their pre-programmed
DMX values and therefore some 'fine-tuning' may be required.
The motors have an optical encoder feedback system. The purpose of this is to convert motor revolutions in to electronic
pulses, and also to determine which direction the motor is turning.
The electronic cards consist of three key components: L298 motor driver, 75176 Transceiver and a processor. The L298 is a
true digital device receiving two PWM signals to operate speed and direction. The 75176 transceiver operates in the receive
configuration to convert serial protocol to a TTL level. All data relevant to the operation of the unit is stored onboard in 'flash'
memory.
The majority of electronics problems are usually created by external factors such as shorted cables, etc. The 75176
transceivers are susceptible to damage if 24VDC is present on the DMX signal lines.
Routine maintenance can prevent most mechanically based problems. The motor mounting plate can be adjusted to control
tension on the belt. Excessive belt tension is often the cause of noise and poor performance. Conversely, loose motor belts
can cause accuracy problems.
Troubleshooting is a process of elimination. First, rule out the other field factors (i.e. faulty cables, power sources). If an
electronics problem is suspected try replacing the electronics card first. If accuracy problems should occur and mechanical
problems have been ruled out, replace optical sensors. For technical advice and/ or parts, please contact your selling dealer
or the offices listed in this manual.
2.8 Technical specifications
Dimensions: 345mm (w) × 359mm (h) × 80mm (d)
13.6" × 14.1" × 3.1" inc. mounting brackets
Weight: 2.5kg/5.5 lb inc. gel string & mounting brackets
Rear aperture: 203mm/8"
Front aperture: 260mm/10.25"
Colour media: Pro Color HT+, Rosco Supergel and GAMcolor recommended
Gel capacity: 2-24 gels
Cooling: 2 fan design
Cooling Speed: Multiple speeds
DMX protocol: ANSI E1.11 USITT DMX 512-A
DMX addressing: Digitally via 3 push buttons and LED display
Working Voltage: 24 VDC (+/- 10%)
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