Programming instructions

52 Designer’s Guide
Calsense
Requirements
To use a fiber optic modem, the following is required:
• Fiber optic modem connected to the central computer
• Calsense SSE or SSE-D stainless steel enclosure
• An existing two loop (A and B) fiber optic network
Local Radio (model -LR)
The Calsense Local Radio communication option (model -LR) enables a computer running the Calsense
Command Center software to communicate with an ET2000e controller through a local radio system. A
local radio is a 2 watt, narrowband UHF 450-470 MHz radio modem.
A local radio system has a single local radio hub and one or more controllers in the field with the Local
Radio communication option. The hub manages data flow between the central computer and
surrounding controllers. Figure 27
shows a sample of how a hub communicates to local radio controllers
in the field.
Benefits of choosing the Local Radio communication option are:
• Does not require any trenching or wires
• Provides reliable long range communication
• Multiple controllers can share a single central communication device
Figure 27 - Local Radio Communication
Requirements
To use a Calsense local radio, the following is required:
Calsense
controller
with -LR
option
Calsense
controller
with -LR
option
Calsense Hub
with
-LR option