Veeder-Root EMR4 - Appendix C: System Noise and Interference; Display Head Unresponsive Due to Noise

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Appendix C: External Sources of System Noise
SYSTEM BOOTS UP, BUT DISPLAY HEAD DOES NOT RESPOND CORRECTLY
Electrical interference or noise could cause this problem. Make sure the IB and the Display Head
each have a good Earth Ground and the ground/shield wire between the IB and Display Head is
connected. Try to find the noise source by turning on and off motors/pumps and other equipment in
the area. Make sure this other equipment is also well grounded.