7
RC Rx displays a functional report about SB discharge below 5,35V from any Rx by switching on BDC
indicator, corresponding positional indicator “1-2”… “19-20” and an audio signal.
5.1.11
Further this report will be called “BDC report”.
5.1.12
RC Rx controls voltage of its own SB voltage. If its discharge is below 5,35 V, “RC Rx
BDC” indicator lamp is ON.
Note. At the moment of RC Rx switching on/off, “RC Rx BDC” is ON for a short period of time.
5.1.13
There are two modes of operation in the complex: standby and alarm. Standby mode is ON
when there are not alarms. It is displayed by “-“symbol on the digital display of RC Rx. Alarm mode is
displayed by a audio signal and a number of a sector is shown on the numeric display of RC Rx. When
power supply is ON, Rx generates two control alarms confirming that power supply is ON. The numbers
of sectors of this Rx are specified.
5.2
Description of the System Structure
5.2.1
The system structure is given in fig.5.1.
Tx
Rx1-2
Tx
Rx3-4
Rx19-0
Tx
Tx support
Detection zone
RC Rx
Rx support
Fig. 5.1
5.2.2
The site protective boundary consists of sectors. Their maximum length is 50 m. Rx and Tx
units are mounted on supports. A protective boundary can be closed or open. An open protective
boundary is shown in fig. 5.1. In this case
Rxs must be mounted on the outer supports
.
5.2.3
The order of sector arrangement by numbers can be any. The sector is identified by RC Rx
under that number which a receiver of beaming of this sector has.
5.2.4
The maximum number of sectors of one system is 20. If a protective boundary is closed,
10 Rxs and 10 Txs are used. There is the 11
th
transmitter in the system to form an open protective
boundary consisting of 20 sectors.
5.2.5
Partial use of the system components is allowed to form short protective boundaries.
Therewith, the minimal quantity of sectors is two because Tx has two receivers of beaming, their
power supply is ON simultaneously. If one of the receivers of beaming does not receive signals, it
constantly generates alarms.
