User's Manual

US7,420,471; US8,169,335; US8,232,888; US5,939,986;
US6,810,353; AU2005289704; ZA2007/02919; ZA2008/02673;
ZA2010/06816, ZA2010/09068 Patent Pending
adjustable by the user.
• To receive a 916.48 MHz RF signal from a Personal Alarm Device (PAD) and/or a Collision
Avoidance Module (CAM). 
• To transmit a 916.48 MHz signal from the MAC to a CAM in a Magnetic Field Generator
on a moving vehicle. This signal only transmits data pertaining to proximity events
when the truck enters the MAC magnetic field.
• Turn ON selected signal outputs when 916.48 MHZ warning signals from a PAD and/or
CAM are received.
• An optional function is to generate a slightly modified 73 kHz field that PADs recognize
as a silencing field that causes PADs to ignore standard magnetic fields created by other
HIT-NOT® Magnetic Field Generators.
Detection/analysis of the MAC 73 kHz magnetic field by a PAD or CAM is same process as
explained in PAD and MFG/CAM User’s Guides. However, MAC reactions resulting from PAD
and CAM 916.48 MHZ RF response signals are unique to the local controlled area at the MAC.
The MAC magnetic field is slightly modified such that a PAD or CAM can recognize and realize
that the magnetic field is generated by a MAC. This knowledge can be used by a MFG/CAM on
the truck to initiate changes while the truck is in the MAC magnetic field. For example, the size
of the magnetic field created by the MFG on the truck can be shrunk while the truck is in the
MAC magnetic field; thus reducing the warnings to pedestrians that may be in a safe zone.
Also, the MFG on the truck can issue a command to slow the speed of the truck.
Another MAC operation feature is that proximity events in the MAC zone are saved into a
memory chip. These events are transmitted to a MFG when the MFG is in the MAC magnetic
field. Events include times and PAD IDs when pedestrians enter the MAC zone and times and
MFG IDs when trucks enter the MAC zone. This information can subsequently by transmitted
from the MFG to users via an optional Data System.
Using a slide switch on the MAC Controller printed circuit board, the MAC can be switched to
produce another slightly-modified magnetic field that PADs can recognize as a silencing field
similar to those produced by other HIT-NOT® Silent Zone devices such as Room Silent Zone
devices. The MAC design geometry can provide a larger silent zone field with a different shape.
The MAC in silent zone mode does not provide signals to other peripheral warning devices.
1.2 Frequency of Operation
The MAC emits magnetic fields on a frequency of 73 kHz and it transmits and receives RF signals
at 916.48 MHz.
1.3 FCC/IC Information
The FCC ID for the Mechanized Area Controller is QUI-HN-MAC and complies with Part 15 of the
FCC Rules. Operation is subject to the following conditions:
1. This device may not cause harmful interference.
3