Establish Geo Link

The GeoMode function applies only to 100W+ ERT modules that are operating in Fixed Network (FN) mode or in ICS mode (see Change Mode). It lets a 100W+ that is successfully communicating with the network, called the georelay, relay messages for another 100W+ (the geoendpoint) that is unable to communicate with the network. The GeoMode commands appears on the menu only for those who have permissions to use it.

Successful geomode operation requires that the geoendpoint and the georelay have been programmed with identical settings for:

• Packet type

• Bubble-up

• Channel table

• Channel offset

Before you try to set up a geomode relationship, run the Check command on both ERTs and compare their settings to make sure they match. If their settings differ, notify your supervisor or Field Tools administrator of the need to reprogram one or both ERTs.

Establishing a geomode link between two 100W+ ERT modules entails two steps.

1. At the geoendpoint ERT, use the GeoMode Commands > Start Geo Beacon command to turn on the ERT's geomode beacon.

   The beacon is a radio frequency signal that enables a georelay ERT to identify and try to establish a communication link with the geoendpoint.

2. At the candidate georelay ERT, use the GeoMode Commands > Establish Geo Link command to instruct the module to listen for the geoendpoint’s beacon. Enter the target geoendpoint’s endpoint ID in the Geo Partner ID field when prompted by Field Tools.

   If it hears the beacon, the georelay tries to establish a geomode link with the geoendpoint, a process that can take from two to six minutes.

If the georelay fails to establish a link, repeat this step with a different candidate georelay, or return to the geoendpoint and execute the Stop Geo Beacon command to turn off the beacon.