This topic provides the requirements and procedures to install a 1 Watt XR Transmitter with an internal antenna.
For a system with more than one Transmitter, first configure and install the main Transmitter and verify it received a valid time signal and then configure Repeater Transmitter(s). When all Transmitters are configured and installed, you can then configure and install the system clocks or InfoBoards.
Do not install system clocks and other devices until Transmitter and its components are installed and configured; powered on, time source configured and valid time signal received, and fully operational.
Review all installation requirements and identify the installation location of the Transmitter and system components.
Review all Safety Instructions and Warnings.
Inspect system components to verify packaging includes all supplied parts for each system component and verify no damage has occurred during shipping.
The following tools and equipment are recommended and can be purchased from Primex.
1 Watt Transmitter Shelf. 18 GA metal, epoxy coated, 18 in. L x 3 in. H x 16.5 in. D
Uninterrupted Power Supply (UPS)
Location and mounting must meet all of the following requirements.
Multi-story building: locate main Transmitter on the top floor; significantly improves coverage to the lower floors due to the “umbrella” pattern of transmission
Transmitter mounting location: a minimum of 4 ft. (1.2 m) above the floor.
Transmitter shelf mounting: 18 in.L x 3 in. W x 16.5 in. mounting shelf available from Primex.
Transmitter enclosure clearance: located in an area that allows for required clearance.
Enclosure dimension: 2 in. H x 17 in. W x 12 in. D (5.08 cm x 43.18 cm x 30.48 cm). Required wall area is 24 in. W x 18 in D.
Allow a minimum of 43 in. (1.09 m) vertical clearance; includes internal antenna 40.8 in. H (1.03 m) and Transmitter enclosure height of 2 in. (5.08 cm)
Internal antenna clearance: requires vertical clearance and distance of a minimum 5 ft. (1.5 m) from large, solid objects, such as lockers or filing cabinets. Antenna should never make contact with metal objects, especially electrical conduit or wiring of any kind, and proximity to these should be avoided. Internal Antenna height: 40.8 in. (1.03 m).
AC power: located within 5 ft. (1.5 m) from a 120 VAC electrical outlet. 10 AMP dedicated service recommended.
AC power supply (supplied): Input: 120 VAC, 50/60 Hz, 0.6 Amp. Output: 9 VDC, 1.78 Amp. 6 ft. (1.83 m) cord
Environment: located in an indoor controlled environment that is 32° to 122° F (0° to 50° C) and a non-condensing humidity environment.
GPS Receiver location
Must be mounted where it has a "clear view of the sky" to receive a GPS signal 24 hours a day.
Typical mounting locations include the inside of a window (not a Low-E glass window), to an exterior pole, or on a rooftop.
Must be kept away from large metal objects.
GPS Receiver and cable must be mounted above any potential standing water, snow depth, leaves or other obstructions and is protected from the weather.
10 ft. (3 m) GPS cable supplied. Extension cables available from Primex.
Maximum total distance of the GPS cable to the Transmitter cannot exceed 200 ft. (60.96 m).
GPS cable located outdoors: cable routing to the inside of the building requires 2 in. (5 cm) minimum conduit and weatherhead. The use of a GelWrap splice enclosure is strongly recommended.
GPS and extension cables connections must be weatherproofed.
The following tools and equipment are required to complete installation.
Standard or hammer drill
5/8 inch concrete drill bit, 18 in. (45.7 cm) long
Silicone caulk for GPS cable penetration
Slotted/Flat Head screwdriver
A GPS Receiver is required when a Transmitter is set to use GPS as its time source.