NexusData AP-WM Utility Meter Reading Transmitter User Manual 51723
NexusData Ltd. Utility Meter Reading Transmitter 51723
8
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| Mirror Download [FCC.gov] | |
| Document ID | 51723 |
| Application ID | /E8mAimFE5M95gfrfa0u4w== |
| Document Description | 8 |
| Short Term Confidential | No |
| Permanent Confidential | No |
| Supercede | No |
| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 29.09kB (363639 bits) |
| Date Submitted | 1999-08-04 00:00:00 |
| Date Available | 1998-08-05 00:00:00 |
| Creation Date | 2001-05-26 03:12:21 |
| Producing Software | Acrobat Distiller 4.0 for Windows |
| Document Lastmod | 2001-05-26 03:12:28 |
| Document Title | 51723.pdf |
| Document Author: | jsoscia |
AP-WM USER GUIDE APnet Remote Unit User Guide | . Chapter 1 Sy>lem Overview TABLE OF CONTENTS Chapter 1: System Overview About This Manual Chapter 2: Remote Unit Description The AP—WM Chapter 3: Installing the Remote Unit Installing the AP-WM Chapter 4: Operating the System Operating the AP-WM API’lCl Remote Unit UserGuide Chapter 1. System Overview Chapter 1: System Overview The AP-WM is a field telemetry unit for automated remote meter reading (AMR). based on the general purpose APVTX Remote Unit. The unit is designed to operate in a "fixed network" configuration. which proves highly economical. owing to the large reception range achieved while maintaining high reliability of the communication link. The network operates in the ISM (Industrial. Scientific, Medical) frequency range of 903.6 — 926.2 MHz. utilizing Direct Sequence Spread Spectrum communication technology. The combination of special frequency band and innovative technology provides important benefits. Among these are: - Reduced infrastructure costs 0 Fast data rates - Interference immunity - Extcnded range 0 Secure communication 0 Unlicensed operation in many countries The networks three main components are its regional Control Center. Base Stations and Remote Units, The Control Center The Control Center is the nucleus of the network. serving as the system’s command and control site. It receives messages from the Remote Units via the Base Stations on the Uplink network. The Center performs the following functions: - Controlling and monitoring of Base Station receivers and Remote Unit transmitters. ' Managing communication with the client application. The Control Center software enables the operator to monitor system operation. change operating parameters and to control the various components by means ofa series of user friendly screens, menus and graphs. APnet Remote Unit User Guide 1 - J Chapter 1. system Overview The Base Stations The system of Base Stations provides the link between the Remote Units and the Control Center, The Base Stations receive Uplink transmissions from the Remote Units, They perform the digital signal processing necessary to despread the signal. which is then conveyed to a host PC and on to the Control Center via a dedicated line. The Remote Units The Remote Units transmit RF signals to the Base Stations, Their operation is controlled by a microeontroller. In order to maxrmize battery life. the unit remains in “power down" mode whenever it is not receiving or transmitting data. About This Manual This manual guides the user with infonnation about the transmitter unit. its installation and configuration procedureboth for personnel engaged in operating the network and for installation and maintenance technicians. The information presented in this manual is organized as follows: 0 Chapter 2, Remote Unit Description. describes the Remote Unit and its sub-components and functions. 0 Chapter 3, Installing the Remote Unit, details the installation procedures for the Remote Unit. 0 Chapter 4, Operating the System, sets out detailed operating procedures together with an explanation ofthe software. Conventions To help you interpret information correctly. this manual uses consistent text formats for different information. These conventions are explained as follows: Bold Courier Font: Text that must be typed exactly as it appears. (Lg. Aptech . axe ALL CAPITALS Acronyms and abbreviations. tag. ACK, AGC. FitstLetterCapitals Technical terms related to the APnct system, eg, Base Station. Frequency Sweep. l — 4 Al’net Remote Unit User Guide Chapter I. System Overview FCC Requirements This equipment has been tested and found to comply with the limits for a class B digital device. pursuant to part 15 ofthe FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates. uses and can radiate frequency energy and if not installed and used in accordance with the instructions. may cause harmful interference to radio communication However. there is no guarantee that interference Will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception. which can be determined by turning the equipment off and on. The user is encouraged to try to correct the interference by one of the following measures: - Reorient or relocate the receiving antenna. - Increase the separation between the equipment and receiver. - Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. - Consult the dealer or an experienced radio/TV technician for help. APnet Remote Unit User Guide I - 5 Chapter 2: Remote Unit Description The AP-WM The unit includes a support board (spacer) batteries 3 shielded Direct Sequence Spread Spectrum (“05 SPSP”) transmitter and CPU circuit. an I/O circuit and a printed antenna‘ fitted in a plastic spray-proof(IP-o4) box The 1/0 circ t translates pulses of dry contact. to digital signals stored by the unit. The dry contact pulses are generated by a magnetic interface to a water meter, or any other pulse generating interface. The AP~WM is a fully programmable uniti Programming is performed via an R5232 serial port. using an RJ-45 connector on the unit's board. The unit can also be programmed through a magnetic loop interface. provided as an option The units are supplied with simple operator software, to enable initialization and service checks on the field. The unit transmits periodicallyt at intervals programmed prior to operation The data transmitted by the unit includes: a Unit identification - Meter identification (2: separate message is initiated for each meter connected to the unit) 0 Current reading of the meter - Factor used by the meter (eg, a reading of 1234 with a factor of 10 represents actual consumption of 1234 volume units - m3 or l‘t‘") - Tampering information - magnetic tamper and cut-wire tamper are alerted by the unit immediately Components The Unit consists oftwo modules: 0 1/0 (input/output) module~ which may include a paging receiver. 0 Transmitter module‘ which includcs the following components: A Microcontrollcr — ASlC (Application Specific Integrated Circuit) APnet Remote unit User Guide 2 - l Chapter 2. Remote Unit Description — Transmitter — External memory The [/O (Input/Output) Module The 1/0 module conveys logical, digital and power inputs to the unit’s transceiver, and carries signals and messages from the microprocessor to the application. It thus provides the physical interface with the application and the connection with Ihe power supply. The application interface includes a terminal block with 12 inputs. that can be connected to up to four pairs of “dry contact“ switches and their ground connection. The Microeontroller The 8051 family mierocontroller controls the transmitter's operation, and monitors the message receive process. It also performs sampling of the application’s inputs through the application interface and controls the application’s operating state. In order to save battery power. a specialized circuit in the 1/0 module automatically turns the mierocontroller Circuit's power down. in this mode current consumption is reduced to a minimum. abling long battery life. The circuit is activated only by an "event." which is identified when one of the following happens: 0 Input is received through the serial port from a PC or similar source. - The timer for telemetry transmissions has tinted out - A switch has been closed on one ofthe inputs of tlte terminal block The Transmitter Aptel’s transmitter transmits messages to the Base Stations by means of Direct Sequence Spread Spectrum technology in the 900 MHz frequency range. its transmission power is 1 watt - the maximum allowed for non-licensed [SM transmission. Each bit of information is multiplied by the length of a pseudo-random sequence. The transmission length of each bit thus equals the length of the sequence (255 bits). As a result. the transmission is spread over a wide spectrum. The spreading process is performed by an Aptel ASIC, no APnet Remote Unit User Guide Chapter 2 Remote Unit Description Transmission is i itiated in one ot'tlte following ways: - Cyclical initiation - messages are transmitted at regular intervals. - Slalus Alert - tamper inflicted on the Unit. a User initiation - a request entered on a PC connected to the serial port. APnet Remote Unit User Guide 2 -3 Chapter 3: Installing the Remote Unit Installing the AP—WM Installation Kit 0 Four mounting screws and wall insertsi or pipe mounting kit 0 Installation template Required tools a 4" flat screwdriver 0 Phillips 4" screwdriver Mounting the AP—WMUnit on the Wall l. Mount/connect the inputs to the proper devices (eg. water meters). 2. Choose a convenient position for the Unit. 3. Mark the position of the holes to be drilled on the wall. using the template. 4. Drill the four holes and insert the wall inserts. 5. Open the unit‘s lid and screw in the mounting screws. Secure the unit but do not overtighteni 6. Program the Unit (ifrequired) via its RSZ32 connection. 7. Close the Unit lid. Note: When programming. make sure that COMI is dedicated to thc R57232 channel between the transceiver and the host PC, and is not used for any other purpnse, bi Al’net Remote Unit User Guide Chaplet 3. Installing the Remote Ul‘lll Installing the Software The software used in order to program the Unit is provided on a 3.5” diskette containing: ~ Host PC software "txl26a.exe" - Auxiliary software “menulrez” Note: The software runs under MS - DOS. Make sure that this operating system is available on the host PC. To install the software: l. Copy the following files from the 3.5" diskette to the host PC root directory: 0 IX l 26a.exe - menul ,rez 2. Type tx126a and press Enter; the Main Screen appears and the command box opens. APnet Remote Unit User Guide Chapter 4: Operating the System This chapter describes in detail the operation ofthe Remote Unit. it includes a description oflhe user interface and operating instructions. Operating the AP-WM With Aptel’s remote unit software you can: a Read, set and update transmitter parameters - Send messages The Transmitter Parameters Main Screen Figure 4 - 1 shows the Main Screen as it appears when you operate the software. For information about installing the software. see Chapter 3. Figure 4 - l: The Transceiver Parameters Main Screen The Menu Bar Displays 7 menus and a real time clock. When clicked with the left mouse button, the menus open to display windows and dialog boxes. Al’net User Guide 4 - l Chapter 4. Operating the System The Transceiver Parameters Window The Commands Dialog Box The Hot Key Bar Appears as u background Window, When clicked, the window is activated, and allows you to enter or change parameters. Appears as a foreground window. Allows you to enter and send commands, Displays hot keys for exiting the program and closing a window. You can use both the mouse and the keyboard to move around in a window. 0 To move the cursor to the Menu Bar. press the Fl 0 key. 0 To bring a window to the front. click it or press the F6 key. 0 To move between fields in a dialog box. press the TAB key. 0 Dialog box commands have their first letters highlighted. To choose a command, press ALT + (highlighted) letter. The various windows. boxes and features you can access from the Menu Bar are listed below: Menu File Commands Reports Telemetry Window Option Access to Video mode; About: Calculator; Calendar View file; Change Dir; DOS shell; Exit Commands dialog box Report window: Message window: Save reports Open: Save; Restore Next; Zoom; Cascade; Tile Colors; Graphic A Pnet User Guide Chapter 4. Operating the System 'ndows, Boxes and Features ~ ' dflm‘l mr Co'lindv Figure 4 - 2: The 2 Menu Video mode Reduces font size to include more information on the screen. To return to normal mode. click Video mode again, About General information about the sottware. Calculator Enables use of built in calculator, using the mouse only. Calendar Opens multi-year calendar with current date highlighted. To move between months, use up/down direction keys. File Menu TF‘ minus? F as anETEs- u Figure 4 - 3: The File Menu View File Displays the Open File dialog box. The status bar shows file name. size in bits and creation date. To open a file. type in the file name or choose a file from the Files list and click Open. APnet User Gulde 4 - 3 Chapter 4, Operating the System Change dir. Displays the Change Directory dialog box. which includes a Directory Name list box and the corresponding Directory Tree display. To change the directory. choose a directory from the list and click “Chdir”. DOS shell Enables you to work in DOS. Exit Enables you to exit the program. Commands Menu Open Commands Opens the Commands dialog box. which Dialog displays a list of commands that you can use to control the transmitter's operation and to configure its parameters. See below for details Reports Menu Figure 4 , 4: The Reports Menu Open Report Opens the Report window. which displays Window information about special events, under the headings Time‘ Code and Description. Open Message Opens the Message window. which displays Window details of mess res received and time of transmission Save Report Opens a window that allows you to save the report under a name of your choice by clicking OK. 4 - 4 APnet User Guide Chapter 4 Operating the Syslcm Telemetry Menu Figure 4 - 5: The Telemetry Menu Open Telemetry Opens a window displaying information about Window the transceiver’s general parameters Save Telemetry Opens a dialog box that allows you to save Window telemetry files. Enter a file name in the Name field, or select a file from the Files list and click OK Restore Telemetry Opens a dialog box that allows you to restore Window telemetry tiles. Enter a file name in the Name field, or select a file from the Files list and click OK. Window Menu Figure 4 - 6: The Window Menu Next Brings the next window to the front of the display, Zoom Zooms in and out of open windows. Cascade Arranges open windows one belnw the other. Tile Arranges open windows one next to the other. u- APnet User Guide 4 » Chapter 4 Operating the System Options Menu Figure 4 — 7: The Options Menu Colors Opens the Colors dialog box. In this box you choose foreground and background colors for different groups of items. Graphic Opens the Graphic dialog box In this box you Change the graphic representation of the open windows. Commands List (accessed from Command dialog box) "Thur vsbnw WIN-ft 29m: ~ , Figure 4 - 8: The Commands List Transmit Data Sends the default message to the air, The message structure is programmed to the unit and includes the unit ID, readings and status flags. 4 . 6 APnet User Guide Chapter 4 Opctztting the System Read Configuration Reads the current configuration and presents the parameters on the main window. Reset Water Meter Resets to zero the water meter readings. Readings Set Unit [Enables the user to program the operator number Configuration (when several operators exist in the same area) and the Tamper Mode (Magnetic & Cut Wire. or Magnetic Only), and to set which inputs connected to the unit are valid (out of the four available inputs) Set and Read Opens a window showing the current interval Timing Parameter between consecutive telemetry messages and allowing programming of that parameter. A value of zero turns the transmitter off. Set Meter Each meter connected to the Unit is programmed Parameters to a name, number‘ current reading, factor and meter type (water/electric/gas). Port Choice of connection to COM] or COM2 of the host PC Al’net User Guide 4 . 7
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