PTI security systems Wireless Door Alarm System, Инструкция по установке и эксплуатации

Страница: 79 / 84

74 rev. 7-2017 114A3873.D
Wireless Door Alarm System
2 Check that all wire used during the installation meets PTI
Security Systems specifications. 18 AWG shielded wire
should be used for power and communications.
3 Check that there are no breaks in the shield, skinned or bare
wire, shorts or breaks in the wire, or splices in the wiring.
In some cases, radio frequency interference (RFI) may also be a
problem. All electronic equipment is susceptible to RFI. Radio
antennas, military bases, airports, radar, power plants, certain types
of lighting, cell phone towers, and communications equipment, are
all examples RF generators that can cause interference problems.
PTI’s equipment has protection built into it to keep it safe from
most RF interference,; however, extreme levels of RF interference
can cause communications problems.
Humidity, temperature, and cloud cover, as well as broadcasting
strength and proximity to the RF source can contribute to the
problem.
As a rule, extreme levels of RF will cause the system data
communications to go on and off (
data comm on/data comm
off
) or cause the system to report scattered false door activity.