Security Escort Technical Reference Manual 1.0 Security Escor
System Architecture
EN 9
The alert unit has
1.1.5 Transponder
The transponder is a device controller for up to 64 devices; any combination of receivers and alert units. The devices are connected to the transponder by means of 8 four wire multiplex busses, two wires for power and two wires for data. Each bus is capable of supporting up to eight devices. The Security Escort System supports up to 255 transponders.
Each receiver and alert unit is identified to its transponder by a multiplex address that is set during system installation using a multi- position switch on the receiver or alert unit circuit board. Transponders communicate on the data bus with individual multiplex devices by issuing commands, which contain the receiver or alert unit’s multiplex address. Note that a given transponder may have up to eight devices with the same binary multiplex address, one on each bus. Thus, the complete identification of a particular device must include the transponder with which it is associated (1 to 255), the bus on which it is located (0 to 7), and its binary multiplex address (0 to 7).
When a receiver or alert unit detects a reportable event (alarm, test, tamper, loss of AC power, and so on) it goes into an Off Normal state. To quickly locate any devices which might be in the Off Normal state, global commands (which are interpreted simultaneously by all of its devices) are issued by the transponder approximately ten times per second. These global commands are followed by commands to specific devices to determine the nature of the Off Normal condition and, in the case of an alarm or test, to obtain the Transmitter Identification Number, Transmitter Battery Condition, and Received Signal Strength. This information is used by the central console to identify the subscriber transmitting the alarm (test) and to determine the subscriber’s location.
1.1.6 Central Console
The central console consists of one to
eight IBM™ PC compatible computers running the Security Escort software within the Microsoft Windows environment. One computer serves as the main controller for the entire Security Escort System (the master computer) and a second serves as an optional backup (the slave computer). The other computers serve as workstations for the operators of the software. The slave and workstation computers can be used for administrative functions such as adding subscribers or performing routine system tests without interfering with the operation of the master computer.
In the event of an alarm from a transmitter, the console displays the name of the individual to whom the transmitter is assigned, and the location from which the transmission was made. The location information is shown graphically on a map of the protected area. Other information about the subscriber, such as address, home address, phone number, and any disabilities may also be shown.
Both the main computer and the backup record all messages sent between the central console and the transponders, providing redundancy of records.
1.1.7 Software Overview
The central console contains all of the operating software and all of the databases required by the Security Escort System. The Security Escort System Operations Manual describes that portion of the system software, which affects system operators (in most cases, the Security Department personnel). This Technical Manual discusses only the software functions that are specific to installation and maintenance of the system.
All operations on the central console computers are password access controlled. The Logout option on the Main Menu bar produces a screen for entry of the password (see Figure 1). Passwords may have different authority levels, assigned by installation company personnel or the Security Department’s key operator.
Bosch Security Systems 6/12 38947D