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Demo : Itelco Supervisory System - ISS

 

Function

Continual technical evolution has brought about an increase in the complexity of the various broadcast systems along with a reduction of engineering staff in many organizations. Thus the request for control and monitoring systems has considerably increased. Itelco proudly presents its industry-leading Supervisory System (ISS). The ISS with its windows based software enables a very sophisticated, user-friendly control and management of a single transmitter to a whole network of transmitters. The ISS can be applied to any Itelco transmitter as well as also to transmitters from other manufacturers. The open system architecture allows tailoring the system to the customer�s specific requirements as well as modifying or expanding its features in the future. The ISS enhances the ease of transmitter maintenance by identifying the location and number of faults, providing maintenance date and time information, and allowing long-term trend analysis. The software directed ISS provides information from the entire transmitter by gathering data and parameters from each major subassembly. The system�s Acquisition/Control logic interfaces, which acquire the normalized values from the signal conditioning interfaces of the transmitter�s major subassemblies and the logic of the exciter, forward their data to the G232 serial line Multiplexer. Data from subassemblies that have no signal conditioning interface can be gathered through the G034, which normalizes the values and forwards them to the G232. From there the information is communicated to the control center PC through a standard switched telephone line or GSM mobile phone connection. Alternatively, the information from the G232 can be communicated first to a local PC (PC-based Version) and from there to the control center PC. The PC software elaborates the values and visualizes the resulting data and parameters in a simple and intuitive graphical user interface. For each data three color-labeled threshold levels are displayed - normal functioning, warning, alarm -. The software organizes the data/alarms in databases for further reading and evaluation. From the PC the following remote commands can be carried out: transmitter ON/Reset; transmitter OFF; and setting of digital parameters of digital exciters.

Key Features/Benefits

Supervision of transmitting systems manufactured by Itelco and/or other manufactures

Comprehensive, real-time monitoring and commands

Open system architecture allows customization and continuous growth

Supervision of single transmitter to transmitter network

User-friendly graphic interface in Windows environment

ISS software configurable to specific customer requirements

Data/alarm storage in Microsoft Access data base format

Automatic calling of control center PC in the event of a failure

Values are displayed in graphic and numeric forms

The control center PC calls the transmitter station at set hours and gathers data

Multiple user access levels

Software provides trend and diagnostic analysis

System Components

The ISS uses the following hardware and software for the data

management of each transmitting system:

Acquisition/Control logic interfaces

G034 General Purpose Acquisition and Control Unit

G232 Front End Concentrator

PC-based Version

Switched telephone line / GSM phone connection

Software and control center PC

G020 Changeover unit for 1+1 passive reserve systems-transmitters or exciters.

  • G011 Changeover unit for N+1 passive and active reserve systems.

  • G021 Control logic for IOT transmitters.

  • G041 Control logic for solid state transmitters.

  • G042 Control logic for solid state transmitters.
    Control logics incorporated in digital exciters.

G034 General Purpose Acquisition and Control Unit
G034 Data Acquisition

The General Purpose Acquisition/Control unit is used to interface measurements from transmitters or its subunits that lack a RS232 output with the supervisory system. The G034 normalizes the input signals and communicates them to the G232. It is possible to customize the G034 to specific functions and integrate the monitoring and control of transmitters not manufactured by Itelco.
The G034 is equipped with 23 digital inputs, 16 analog inputs, 15 digital outputs, 3 analog outputs. Each digital input/output signal is opto/galvanic isolated and has a LED indicator to ease installation and service. Each analog input has a High Impedance Differential Input Amplifier and buffered analog outputs. Optionally, the control of accessory equipment present in the station, such as the cooling cabinet, motor generator, tower lights, and security system can be comprised into the ISS.

G232 Front End Concentrator

The G232 is the interface between the control center PC and the Acquisition/Control logic interfaces and, when present, the G034 General Purpose Acquisition and Control unit. The G232 acts as a multiplexer for up to eight RS232 serial lines. The switch command, as well as all other G232 commands, is sent through the RS232 input line with a unique command. LEDs are used to indicate the status of the switch. The G232 is equipped with a modem in order to connect directly to a standard telephone line. A connection by means of a mobile phone is also available. The G232 can automatically poll the connected units in order to check their general fault status. In presence of a fault, the G232 calls the preset telephone numbers.


"PC-based Version"

Optionally, instead of having just one PC at the control center, each transmitter station is equipped with its own PC. In this case the Acquisition/Control logics and the G034 are connected to the station�s PC, which integrates the G232 functions on a PC plug-in card. The PC operates a reconfigured ISS software. A general purpose remote control PC software is used to control the local PC directly from the control center.

Monitoring of Power Amplifier Module

Software and control center PC

The Windows based ISS software provides simple and intuitive operation. A standard PC with the following minimum features is required: i486 CPU, 8MB RAM, 850MB HD, VGA graphic, Microsoft Windows 95, and a modem.

Multiple Uses Access Levels

Configuration
The data is automatically gathered from the stations at set hours. If the station is not called by a certain preset time, a user defined procedure will be activated. The G232 logic can be configured for spontaneous calling in case a fault occurs. The alarm will be indicated on the PC monitor by a blinking red label.

Multiple user access levels:
The ISS has three password coded access levels. Level 0 allows local transmitter control only, disabling RS232 communication. Level 1 allows the ISS only receiving data from the transmitter. Level 2 enables ISS to send and receive data, providing complete control of the transmitter.

Monitoring
Any value can be measured and displayed in a graphic and numeric form. Physical layouts and mechanical diagrams of the transmitter and its subassemblies (power amplifiers, exciter, logic unit etc.), electrical layouts, tables and block diagrams in Windows environment provide user-friendly monitoring. The ISS graphically displays the component causingthe fault. Self-diagnosis, graphic guide and on-line service manual with context help are provided.

Database editing

The data is on-line edited with three colorlabeled threshold levels (normal, warning, alarm) and stored in a Microsoft Access file format database. The ISS automatically detects parameters which are outside a preset range of admissible parameter variations.
The database creates two types of statistics. On-Screen database editing
Any time the center PC connects with the transmitter, the Value Statistic stores a complete set of data (analog and digital) and the Alarm Statistic stores all detected fault conditions. The operator can edit further statistical reports from this data.