Operations Manual

EXI HALO Installation & Operation Manual 981-000003-000
EXI Wireless Systems 12 March 2000
Revision 2.0
5. Installation
5.1. Overview to Installing the HALO System
EXI HALO is designed to provide extended periods of reliable service. Once installed correctly, the system
does not require tuning or adjustments, and it should provide exemplary service unless the position of its
components is subsequently disturbed, the physical environment is altered as in a renovation, or a very strong
noise source is introduced into the environment.
Figure 6 – Typical HALO System Installation
5.2. SYSTEM WIRING
The HALO network is based on the RS-485 electrical interface standard, which is 2-wire multi-node bus.
The EXI HALO elements are designed such that many more than the RS-485 limit of 32 Drivers and 32
Receivers can be co-exist on the same network. The baud rate used in the HALO system is 57,600 bps, and
therefore in order to avoid data corruption it is important to ensure that a clean signal is always present.
Using the right type of cable, network topology, and not exceeding total cable length are critical factors in
ensuring that the system will operate reliably.
Figure 7 - "Bus" Topology Figure 8 - "Star” Topology
RIM
HALO Network
SRA Exciter
Antenna
Keypad
HALO
Controller
SRA-E Exciter
Antennae (2)
HALO
Receiver
Keypad
Mag Switch
MagLock
Elevator
Penthouse
CPS-24
Central Power
Supply
Power Distribution
HALO
Transponders
HALO
Elevator
Controller
ELEVATOR
ELECTRICAL
ROOM
Elevator
Travel
Cable
HALO
Console
RS-485
Repeater
6 Lines + GND
"Bus" (Series)
Configuration