Race Management System Instruction Manual
Westhold Corporation General Warranty Modules and other equipment ("Goods") purchased from Westhold Corporation are warranted against defects in materials and workmanship under normal use for a period of three years from the date of purchase. In the event of product failure due to defects in materials or workmanship, the customer may return the defective product to Westhold Corporation for repair or replacement.
1. Introduction The Westhold RMS-3 is a sophisticated multi-component system used for the timing, scoring and management of motor sports racing events. The RMS-3 consists of electronic hardware and PC based MS-Windows® software. A basic hardware setup includes a computer, Interface Data Unit (IDU), Decoder, Loop Antenna, and transmitters. See fig. 1.1 Outside of scoring building - Track-side Inside scoring building IDU Computer Coax RaceBus Link RS-232 Decoder Balun Loop Antenna (e.g.
Loop Antenna (Timing point 1) balun Loop Antenna (Timing point 2) balun Coax cable Decoder Coax cable Decoder RaceBus (Cat 5 type Cable) IDU (fig 1.2 - Multiple Timing Point Configuration) A Loop Antenna is simply insulated electrical wire with a terminating resistor on the side of the loop furthest from the connection to the Decoder. They are buried beneath the surface of the track and are 24 inches (approx. 60 cm) wide and can be of varying length to cover the width of the track. See fig 1.4.
Physically, the RaceBus is standard 4 pair (8 wire) network (Category 5) cabling found at many computer stores. The RaceBus network architecture allows multiple devices, called Appliances, to be attached to the network. For instance, the IDU and Decoder are both RaceBus Appliances. Scoreboards, results monitors, results printers and other third party Appliances may also be attached to the RaceBus. However, it is NOT possible to hook computer network equipment to the RaceBus.
Slightly overlapped antenna loops 24 inches Master Loop Terminating Resistor Overlap of 2-3 feet Coax from balun Slave Loop - Balun Master Decoder Diasy-chain cable RaceBus Data cable (Cat 5) to IDU (fig 2.1.2 – Multi-loop) Antenna loops are simply insulated copper electrical wire with a resistor soldered to the end of the loop.
loops in plastic PVC sprinkler pipes. Make sure the pipes are sealed such that water will not enter the pipes. There is no fixed depth to bury the antenna for dirt tracks. This is variable depending on the track. Environmental factors such as metal content in the soil can reduce detection distance and therefore the antenna cannot be buried as deeply as soil without metal content.
Note that when a transmitter is within detection distance of the antenna loop and Decoder, the detection LED (DET) will turn on. Each Decoder has two circular connectors. One end is labeled “Main” and the other is labeled “Daisy.” Connect one end of the cat-5 cable with the circular connector to the Decoder. Connect the RJ-45 end to one of the ports on the back of the IDU.
carbon fiber between it and the track surface. Metal and carbon fiber will block the signal emanating from the transmitter and the Decoder will not be able to pick up crossing transmitters. Direction of Travel Fig 2.4.3 3. Specifications The RMS is capable of detecting transmitter crossings over the middle of a Loop Antenna with a spatial accuracy of typically 2-3 inches and a resolution of better than one ten-thousandths of a second.
System Specifications: Specification # Transmitter Ids Max Speed Track Width Spatial Accuracy Timing Resolution Max Transmitter Height > 1,000,000 200+ mph 100+ feet (30 feet per Loop Antenna-Decoder Pair optimal) 2-3 inches typical better than 0.0001 sec Vehicle and track dependent (24-48 inches typical) Component Specifications: IDU (Interface Data Unit) Dimensions Interface to PC Power Supply Multiple Decoders 11” x 8” x 2.
4. FCC Notices RMS-3 Interface Data Unit and Track-Side Decoder FCC Declarations: FEDERAL COMMUNICATIONS COMMISSION RADIO AND TELEVISION INTERFERENCE STATEMENT FOR A CLASS 'B' DEVICE This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
TXDP RMS Hardwire Transmitter FCC Declaration: FEDERAL COMMUNICATIONS COMMISSION RADIO AND TELEVISION INTERFERENCE STATEMENT Changes or modifications not expressly approved by Westhold Corporation could void the user's authority to operate the equipment. This device complies with Part 15 of the FCC Rules.
