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 install and configure the main Transmitter and verify it received a valid time signal and then configure Repeater Transmitter(s). When all Transmitters are configured, you can then install system clocks and other devices.
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 of a transmitter with an internal antenna must meet all of the following requirements
Follow all placement recommendations provided with Primex Site Survey. Commonly completed for transmitters with external antenna and multiple transmitter system.
General recommendations include locating the main Transmitter on the top floor; significantly improves coverage to the lower floors due to the “umbrella” pattern of transmission.
Transmitter mounting location
Located a minimum of 4 ft. (1.2 m) above the floor.
Mounting shelf (available from Primex): 18 in.L x 3 in. W x 16.5 in. D
Transmitter enclosure clearance
Located in an area that allows for required enclosure clearance.
Enclosure dimension: 17 in. L x 12 in. W x 1.7 in. D (43.2 cm x 30.5 cm x 4.32 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: 48 in. (1.2 m)
Transmitter 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
Transmitter located in an indoor controlled environment that is 32° to 122° F (0° to 50° C) and a non-condensing humidity environment.
Determine a suitable location for the GPS Receiver unit. Location is extremely important to ensure the best operation of the system.
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.
Transmitter with internal antenna: Maximum total distance of the GPS cable to the Transmitter cannot exceed 200 ft. (60.96 m).
Transmitter with external antenna: Maximum total distance of the GPS cable to the Transmitter cannot exceed 100 ft. (30.48 m).
GPS cable located outdoors: Cable routing to inside of building requirement 2 in. (5 cm) minimum conduit and weatherhead. 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
Flat head screwdriver
A GPS Receiver is required when a Transmitter is set to use GPS as its time source.