TRANSPARENT TECHNOLOGIES NRD Utility Net Relay Device Operations & Installation Manual
Transparent Technologies, Inc 5665 Airport Blvd Boulder, CO 80301 720-406-1294 Disclaimer In no event shall Transparent Technologies be liable for any incidental, indirect, or consequential damages or other damages including without limitation loss of profits, loss of revenue, loss of data, loss of use of the product or any associated equipment, downtime, and user’s time associated with the use of this product, the resale hardware or its software.
NRD1 Utility Network Relay Device Operations & Installation Manual OVERVIEW 1 INSTALLATION & WIRING 2 OPERATION 3 POWER SUPPLY 4 APPENDIX 5
1 OVERVIEW NRD1 Utility Network Relay Device Basic Specifications Description The NRD1 is a network relay device to be used within a T2 mobile or network AMR system. The NRD1 is an environmentallyhardened transceiver intended for “elevation” mounting in sites such as utility or light poles, towers or building roofs. The NRD is a simple managed network device. When commanded by the G2 Mobile system or the G2 Central Host, the NRD1 rebroadcasts any M2 signals in proximity.
2 INSTALLATION & WIRING Installation The NRD1 is intended for elevation sites such as utility poles, light poles, towers and building roofs. In most cases, T2 will provide assistance on Mounting Location When determining a mounting location for the desired RF coverage, the following parameters must be considered: • • • Topography Elevation Seasonal Changes Topography: The 900 MHz signals of the M2 endpoint radios and NRD1 relay do not require direct line of sight for successful communication.
2 Antenna The antenna supplied with the NRD1 is a specific model and is the only antenna which can be used. The antenna is model PAW-MA9-7. The antenna is intended to be mounted directly to the NRD1 enclosure Remote mount kits for antennas are also available from T2. Lightning Protection The NRD1 utilizes a coaxial gas discharge suppressor. This provides protection per National Electric Code instructions.
2 Wiring Power The only wiring required for the NRD1 is the power connection. All termination of power wires are made to the terminal blocks on the backplane of the unit as shown.
2 Environmental Seals The NRD1 enclosure is rated IP-67. To maintain this rating, the installer must pay special attention to the environmental seals: Front Plate Gasket This is this primary seal of the enclosure. It fits around the entire face of the housing. The front plate sits on the silicon gasket as shown to the left. The front plate must be properly alighed with the H-shape gasket prior to clamping with the front plate screws. The gasket should be wiped clean with water prior to installation.
3 OPERATION Operation The NRD1 is a basic managed network relay. The device does not have any direct field inputs. Its function is to re-broadcast valid M2 or M1B RF packets. The default mode of operation for the NRD1 is MONITOR. In MONITOR mode, the NRD1 simply wakes up pseudo-randomly every 3-10 seconds and transmits its ID and internal diagnostic information. At the end of this transmission, the NRD1 will go into a receive mode to check for any host commands.
5 TROUBLESHOOTING This section under development.
A APPENDIX – FCC / IC INFORMATION FCC Information FCC / IC Declarations 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.
A Antenna Requirements This device has been designed to operated with the antennas listed below, and having a maximum gain of 7 dB. Antennas not included in this list or having a gain greater than 7 dB are strictly prohibited for use with this device. The required antenna impedance is 50 ohms.
