ELECTRONIC WEIGHT INDICATOR DELTA

Size: px

Start display at page:

Download "ELECTRONIC WEIGHT INDICATOR DELTA"

Alberta Joseph
6 years ago
Views:

1 ELECTRONIC WEIGHT INDICATOR DELTA 5 REFERENCE MANUAL HEAD OFFICE: 41, Arkadias Str, Athens, GREECE Tel: , , Fax: THE NETHERLANDS (International Operations): Paardeweide 11A, 4824 EH Breda, The Netherlands Tel: , Fax: address: tsc-breda@scalecompany.com If you have any questions address: info@leon-engineering.com If you want to visit us DELTA 5 ELECTRONIC WEIGHT INDICATOR REFERENCE MANUAL δ.5rm_3 3 1 of 21

2 TABLE OF CONTENTS 1 INTRODUCTION SPECIFICATIONS ENVIRONMENTAL AND ELECTRICAL CONSIDERATIONS INSTALLATION FRONT PANEL SURVEY POWER-UP & RUNNING ERRORS SERIAL ΟUTPUT SPECIFICATIONS PRINTER OUTPUT ( 2400 baud ) CONTINUOUS WEIGHT OUTPUT ( 2400 baud) MAINTENANCE SERVICE SET UP AND CALIBRATION DIALOGUE Par (Scale Parameters) DIALOGUE CAL (Scale Calibration) DIALOGUE STORE (Save in EEPROM) DIALOGUE SETUP2 (Serial Port Operation) DIALOGUE INIT (Installation of Default Parameters) TECHNICAL SPECIFICATIONS INSTALLATION SET UP & CALIBRATION RECORD...20 RIGHTS AND LIABILITIES This manual contains proprietary information, protected by international copyright laws. No part of this document may be reproduced without the prior permission of the publisher, LEON ENGINEERING. The information herein is believed to be both accurate and reliable. LEON ENGINEERING, however, would be obliged to be informed if any errors occur. LEON ENGINEERING cannot accept any liability for direct or indirect damages resulting from the use of the information in this manual. LEON ENGINEERING reserves the right to revise this manual and alter its content at any time, without prior notice. DELTA 5 ELECTRONIC WEIGHT INDICATOR REFERENCE MANUAL δ.5rm_3 3 2 of 21

3 1 INTRODUCTION The electronic weight indicator model δ.5 is a compact microprocessor based unit, specifically designed for use on systems utilizing strain gauge load cells. The standard configuration includes: 1. High accuracy analog to digital converter (max internal counts). 2. Front panel with 6 digit LΕD display, 5 key membrane keyboard, and two annunciator LED s. 3. Non volatile memory for system parameters and calibration data. 4. A serial RS232C port for connection to printer or computer. 5. The microprocessor technology allow the instrument to perform in software all measuring functions, operator input-output, automatic controls and sequences necessary for the operation of weighing systems. 6. The setting of the unit is performed through a guided keyboard operation, enabling the adaptation to operating environment and system requirements. Use U to turn POWER ON/OFF. DELTA 5 ELECTRONIC WEIGHT INDICATOR REFERENCE MANUAL δ.5rm_3 3 3 of 21

4 2 SPECIFICATIONS 2.1 ENVIRONMENTAL AND ELECTRICAL CONSIDERATIONS AMBIENT TEMPERATURE Storage - 10 o C to + 70 o C Operating - 10 o C to + 40 o C Avoid exposure to direct sunlight. HUMIDITY AIR VIBRATION PROTECTION ELECTROMAGNETIC FIELDS POWER SUPPLY INCOMING AND OUTGOING SIGNALS 40% to 90% RH (non condensing) The surrounding air should be dust free and not contain any corrosive gases or materials which could adversely affect the equipment. Severe vibration may affect the accuracy of weighing and damage electric / electronic components. IP 40 for front panel. IP 55 and IP 65 upon request. Heavy electrical equipment should not be installed close to the weighing equipment. LED MODEL * V AC or 8 12 VDC/5VA * Consumption 3W max. (300mA / 6 LOAD CELLS) LCD MODEL * 9.5VAC / 7.2VA (35mA / 1 LOAD CELL) Relays and contactors connected to weighing equipment must have reliable and effective interference suppression. This also applies to other equipment located within a distance of 3m from weighing equipment. Cabling must be performed according to normal practice. NOTES WELDING on or in the vicinity of weighing equipment is strictly prohibited. STATIC loads, caused by thunderstorms, must be prevented from developing by use of reliable lightning conductors. ENSURE that the cooling of the equipment is not obstructed. DELTA 5 ELECTRONIC WEIGHT INDICATOR REFERENCE MANUAL δ.5rm_3 3 4 of 21

5 2.2 INSTALLATION MOUNTING The mounting location must be such that the instrument is not subject to excessive vibrations, heat or humidity. Avoid direct sunlight on the front of the instrument. The unit must be installed at the right height, allowing an easy reading of the display and keyboard operation. WIRING All connections to the instrument are made through the rear panel connectors. LOADCELL (D25 MALE) PRINTER (D9 MALE) PIN DESCRIPTION PIN DESCRIPTION 1,14 SHIELD 3 Tx 2,3 -SIGNAL 5 GND 4,5 +SIGNAL 8 DTR 8,9 -EXCITATION case of D9 SHIELD 12,13 + EXCITATION CONNECTION TO SERIAL PRINTER INDICATOR SER. PRINTER via D9 FEMALE via D25 MALE 3 (Tx) --> 3 (Rx) 5 (GND) --> 7 (GND) 8 (DTR) --> 20 (DTR) case of D9-->SHIELD Use shielded 4 x 0,34 mm 2 load cell cable for the sensor. Use screened 3 x 0,34 mm 2 cable for printer connection, or the host connection. Use mains adapter included or power supply VAC or 8-12VDC / 5VA LED Δ5 9.5VAC 7.2VA LCD Δ5 NEVER USE A MEGGER TO CHECK WIRING. AC POWER As the instrument is computer controlled it requires clean power for reliable operation. AC power supplied should come from a source that is isolated from other process equipment. LEON ENGINEERING recommends the use of a power conditioner for noise attenuation and voltage regulation with a capacity of approximately 10VA. The electrical supply must include a good ground (less than 1 Ohm). Use U to turn POWER ON/OFF. DELTA 5 ELECTRONIC WEIGHT INDICATOR REFERENCE MANUAL δ.5rm_3 3 5 of 21

6 3 FRONT PANEL SURVEY DISPLAY 6 digit LED for the display of measured weight (gross or net), operator and error messages. Digit height approx. 14mm. Over-range is indicated by vvvvvv on the weight display. Under-range is indicated by uuuuuu on the weight display. Center of zero is indicated by a small zero on the leftmost digit. The weight display is also used for error messages and operator prompts. NET INDICATOR It lights up when the scale has been tared and the display is in NET mode. MOTION INDICATOR It lights up when the scale is in motion. The battery model is equipped with an LCD display with a character height of 16mm and the additional DELTA 5 ELECTRONIC WEIGHT INDICATOR REFERENCE MANUAL δ.5rm_3 3 6 of 21

7 annunciator for the battery which blinks when the battery charge falls below 20% of capacity. U POWER ON/OFF KEY (TOGGLE) Turns the unit on and off. O ZERO / CLEAR ERROR KEY - It is used to reset the weight display to zero. Zeroing will be effective only if the scale is stable, in gross mode and the weight is within + 10% of max weighing capacity. - If an error is present on the display press this key to acknowledge. T NET / GROSS KEY (TOGGLE)/ FUNCTION MENU - It is used to tare the scale. Taring will be effective only if the scale is stable and within the weighing capacity. - If the scale has already been tared depression of the key will cause the tare to be cancelled and the weight display return to Gross mode. - If the key is kept depressed for more than 3 sec the function menu is entered. When the display shows Fn 00, press P to return to weight display. The function menu is used by service personnel for maintenance purposes. Refer to SET UP & CALIBRATION chapter for details. Y TOTAL / BATTERY CHARGE - It is used to display the current accumulated total. Press Y again to display the number of weighings. Press Y again to end the total display or Press P to print/delete the total. - For the battery powered LCD models if the key is pressed for more than 3 sec, the remaining capacity of the internal battery is displayed as a percentage of the maximum (i.e. full capacity = 100% ). When the battery is being charged an indication of % may be displayed. P PRINT - ACCUMULATE It is used to transmit weight data to peripheral devices via the serial port. The transmitted weight will also be accumulated. The weight will be printed only if it is stable and within the weighing range of the indicator. Printing and / or accumulation will take place only if enabled in set up. The weight data printed is selectable in SET UP. Refer to SET UP & CALIBRATION for details. DELTA 5 ELECTRONIC WEIGHT INDICATOR REFERENCE MANUAL δ.5rm_3 3 7 of 21

8 4 POWER-UP & RUNNING When the δ.5 is powered up, a self test routine is initiated during which the following data is displayed. 1. Program Number The software identification code is displayed momentarily e.g. P Program Date The date of issue of the software version is displayed momentarily e.g (day - month - year) 3. Display segment test. All display segments are turned on then off for 2 sec. 4. The display shows the weight on the platform, then ZERO. If this weight is within + 10% of scale capacity it will be zeroed automatically. If the scale can not be zeroed Err 15 is displayed. Unload the scale and press O key momentarily to zero the scale. 5. Power up the printer if one is connected to the δ.5. The unit is ready for operation. If an error message is displayed refer to Error description chapter 5 for details. DELTA 5 ELECTRONIC WEIGHT INDICATOR REFERENCE MANUAL δ.5rm_3 3 8 of 21

9 5 ERRORS If an error occurs during the operation, it will be displayed in the form Err xx, where xx is the Error code. Program is halted. Press O momentarily to acknowledge the error and proceed as indicated in the error operator response. ERROR DISPLAY POSSIBLE CAUSE ACTION TO BE TAKEN Err 01 MCU ROM : Faulty FLASH ROM Contact manufacturer. Err 02 MCU RAM : Faulty RAM Contact manufacturer. Err 04 CALIBRATION DATA : Faulty EEPROM Contact manufacturer. Err 05 Scale weight out of range. Check loadcell, cables, connectors, A/D converter. Err 15 System has been initialised due to power failure or soft reset. Zero scale. Err 20 Err 69 PRINTER IS NOT ON-LINE. Either not connected or out of paper or failed. TOTALISER OVERFLOW. Because totalisers have not been cleared for long time. Check printer, cables. Print / clear totalisers. Overflow is not critical, but remember that 1 total capacity must be added to the indication, each time an overflow occurs. To exit from error display press O momentarily DELTA 5 ELECTRONIC WEIGHT INDICATOR REFERENCE MANUAL δ.5rm_3 3 9 of 21

10 6 SERIAL OUTPUT SPECIFICATIONS This port is used to connect to serial printers or personal computers. Data output and handshake requirements are defined by SETUP. TYPE PROTOCOL HANDSHAKE CONNECTION DATA Asynchronous serial ASCII, RS232C standard, simplex baud, 1 start, 7 data, 1 even parity, 1 stop bit. DTR BUSY per character for fanfold printers. DB9 male on rear panel (J2) Tx = Pin 3 DTR = Pin 8 Cable 3 conductor shielded GND = Pin 5 max distance 15m The data output of serial port 1 is selectable via SETUP, and maybe one of printer output or continuous weight output. 6.1 PRINTER OUTPUT ( 2400 baud ) The data to be printed, is defined in SETUP2 ( refer to chapter SETUP AND CALIBRATION). 2.t=01 Indicated weight e.g kg 2.t=03 1 line Gross or Net e.g kg G in GROSS mode or kg N in NET mode 2.t=04 3 line Net, Tare, Gross e.g kg G in GROSS mode or kg N kg T kg G in NET mode 2.t=05 1 line Net, Tare, Gross e.g kg in GROSS mode or kg N kg T kg G in NET mode 2.t=06 1 line number and indicated weight e.g kg 2.t=07 P.A=XX Print weight indication (No control characters for the printer e.g. CR LF) ANIMAL WEIGHING. Wait until the animal is on the scale and the weight is stable. Press P. The display shows Alt and after a short time (depends on xx) the average weight of the animal. Press P again to print / totalise the displayed weight or press O to abort. If no key is pressed after 4 sec the weight will be printed totalised automatically. DELTA 5 ELECTRONIC WEIGHT INDICATOR REFERENCE MANUAL δ.5rm_ of 21

11 6.2 CONTINUOUS WEIGHT OUTPUT ( 2400 baud) The indicated weight and status information is transmitted continuously. No handshake is required. SETUP2 2.t=02 DATA BLOCK COMPOSITION STATUS 1 BYTE POLARITY 1 BYTE WEIGHT 4-6 BYTES SYNC 1 BYTE BYTE NAME DESCRIPTION WEIGHT STATUS POLARITY WEIGHT DIGITS SYNC Bit0 0=NORMAL 1=NO WEIGHT DISPLAY Bit1 0=GROSS 1=NET Bit2 0=NON ZERO 1=AUTO ZERO Bit3 0=MOTION 1=NO MOTION Bit4 0=POSITIVE 1=NEGATIVE Bit5 0=NORMAL 1=OUT OF RANGE Bit6 ALWAYS 1 TO OBTAIN PRINTABLE CHARACTERS Bit7 ALWAYS ZERO "+" OR "-" 4 TO 6 DIGITS DEPENDING ON δ.5 SET-UP INCLUDING DECIMAL POINT IF ANY CR (Od hex) FOR SYNCHRONISATION SET - UP REQUIREMENTS: SET UP2 2.t=02 DELTA 5 ELECTRONIC WEIGHT INDICATOR REFERENCE MANUAL δ.5rm_ of 21

12 7 MAINTENANCE The unit does not require any routine maintenance. It may be necessary to perform periodic checks of the scale calibration due to mechanical reasons. The frequency of the calibration checks depends on the operating condition and on the required measuring accuracy. It may occur, in exceptional conditions, that the unit locks on a wrong memory location and it is not possible to restart because the keyboard is not operative. To restart it is necessary to switch the power OFF then ON again. 7.1 SERVICE - There are no serviceable parts. The unit must be serviced by trained personnel only. The user may check loadcell connection and power supply. - LOAD CELLS Load cells are reliable and very rarely present errors. Check input and output resistance, and resistance between any terminal and shield. Check loadcell connection and cable. - POWER SUPPLY. Check adapter or AC/DC power supply. Check PCB mounted resettable fuse on main board. LEON ENGINEERING maintains a fully trained staff of field service engineers who provide: - Technical assistance by telephone. - Application assistance on-site or by telephone. - Trouble shooting on-site. - Warranty (replacement) or spare parts assistance. - Training on-site or at out service centre. - Equipment updates to our latest configuration. Our engineers will check and repair mechanical, electrical, electronic, wiring and calibration errors. DELTA 5 ELECTRONIC WEIGHT INDICATOR REFERENCE MANUAL δ.5rm_ of 21

13 8 SET UP AND CALIBRATION To prevent unauthorised calibration a calibration lock facility is provided. This is a jumper placed inside the unit on PCB (JP 1). With this jumper inserted the user may only change the SETUP 2. Parameter and Calibration menus can not be accessed. δ.5 units are shipped with CAL LOCK jumper not inserted. To calibrate the unit follow the instructions below. - Connect power to the instrument and press U to start. - Allow 10 min for warm up. - Press the button U twice to turn the indicator OFF and then ON again. - When all display segments light up ( ) press the P key momentarily followed by T key also momentarily. - Display shows SETUP2. Proceed with set up and calibration as described in the following pages. - After storage of calibration data open the unit and insert the CAL LOCK jumper. - Seal the unit. DELTA 5 ELECTRONIC WEIGHT INDICATOR REFERENCE MANUAL δ.5rm_ of 21

14 During SET UP, the four keys underneath the weight display are redefined as follows : O =BREAK T =NEXT Y =SCROLL P =ENTER Use Y to step through SETUP 2 Par CAL STORE INIT While displayed, each dialogue can be accessed with P. Dialogues PAR, CAL, INIT may be accessed only if calibration lock jumper on PCB 702 is not inserted. Two entry procedures are used. 1. SINGLE DIGIT ENTRY (0 or 1). Press Y to change value of digit and press P to accept entry and proceed to next parameter. 2. MULTI DIGIT ENTRY Press Y to increment flashing digit. Press T to move 1 digit to the right (cyclic operation). Press P to accept value displayed and proceed to next step. DELTA 5 ELECTRONIC WEIGHT INDICATOR REFERENCE MANUAL δ.5rm_ of 21

15 9 DIALOGUE Par (Scale Parameters) While in the Par menu use Y key to change value, T to change digit, P to accept entry and proceed to next step. Parameters are defined as follows : 2.P = Position of decimal point (from rightmost digit). (0-4) 3.P = Display resolution (1-50) 4.P = Two first digits of weighing range (00-99) 5.P = Digital filter (1-4) 6.P = Integration time. Permissible range The maximum integration time Tmax=75/LCO Where LCO = Loadcell output in mv/v 7.P = No motion samples. (1-7) 8.1 = Autozero maintenance 0=NO 1=YES 8.2 = Autozero on power up 0=NO 1=YES 8.3 = Dual digital filter 0=NO 1=YES 8.4 = Dual key operation 0=NO 1=YES 8.5 = Battery monitoring 0=NO 1=YES 8.6 = Leading zero blank 0=NO 1=YES 8.7 = Totaliser 0=NO 1=YES 8.8 = Reserved 0.P = Dual interval range. The first two digits of the lower range. (00-99) DELTA 5 ELECTRONIC WEIGHT INDICATOR REFERENCE MANUAL δ.5rm_ of 21

16 10 DIALOGUE CAL (Scale Calibration) Display shows Zero Press P to measure the dead load. Press Y to go to SPAN or press O to exit to CAL Display shows E Scl a reminder to empty the scale. Wait about 10 sec (depending on digital filter). Press P. Display counts down for about 10 sec (averages 64 samples) then it displays zero. Repeat the procedure if the zero point is not accurate. Press P to proceed. Display shows SPAn Press Y to go to dead Id. or press O to exit to CAL. Press P for SPAN calibration. Display shows C xxxxx where xxxxx = Maximum capacity of scale. Enter calibration weight, to be used. To enter use following keys : Y to increment flashing digit. T P to move 1 digit to the right. to accept value. Display shows Add Id a reminder to load the calibration weight on the platform. After loading, wait about 10 sec (depending on the digital filter). Press P. Display counts down for about 10 sec. Then it shows the calibration weight. Repeat the SPAN procedure if the calibration is not accurate. Calibration is complete but factors obtained are not protected in case of a mains failure. Press Y to proceed to storage of calibration. Display shows StorE. DELTA 5 ELECTRONIC WEIGHT INDICATOR REFERENCE MANUAL δ.5rm_ of 21

17 11 DIALOGUE STORE (Save in EEPROM) Press P to permanently save all the calibration data. Program exits calibration and reinitialises. (up to storage cycles allowed). 12 DIALOGUE SETUP2 (Serial Port Operation) Display shows SEt UP2 Press P to enter the dialogue. or press Y to scroll through Par e.t.c. Display shows 2.t XX where XX may have the following values. 2.t PRINT TYPE 2.t = 00 Serial port disabled 2.t = 01 Print indicated weight 2.t = 02 Continuous weight output 2.t = 03 Single line Gross/Net Printout 2.t = 04 Three line Net, Tare, Gross Printout 2.t = 05 Single line Net, Tare, Gross Printout 2.t = 06 Number of weighing & weight printout 2.t = 07 Weight indication printout 2.L LINEFEEDS AFTER PRINTOUT ( ) 2.r REVERSE LINEFEEDS BEFORE PRINTOUT ( ) 2.A LEFT MARGIN SPACES ( ) 2.F LINEFEEDS BEFORE PRINTOUT ( ) 2.b DATA BITS / PARITY 17 = 7 data bits / even parity 08 = 8 data bits / no parity 2.7 PRINTER ERROR CONTROL 0 = NO 1 = YES P.A Number of conversions to average. The value of P.A = Disabled may range from 05 to 30 depending on the accuracy and stability. Values less than 05 will give lower accuracy. Values above 30 will not make any significant improvement. (ANIMAL WEIGHING). DELTA 5 ELECTRONIC WEIGHT INDICATOR REFERENCE MANUAL δ.5rm_ of 21

18 13 DIALOGUE INIT (Installation of Default Parameters) Loads default calibration data for checking purposes. The weight display will act as a mv/v meter of the Load cell output. Press U to exit the init mode and restart the instrument. Be aware that the default parameters and calibration constants will remain in memory. If a subsequent StorE operation is performed previous calibration data will be lost. The default parameters are as follows : Par 2.P = 4 3.P = 1 4.P = 99 5.P = 3 6.P = 20 7.P = 3 8.P = P = 00 DEADLOAD 0 mv/v ~ 0,0000 on weight display SPAN 2 mv/v ~ 2,0000 on weight display SETUP2 2.t = 00 2.L = 00 2.r = 00 2.A = 00 2.F = 00 2.b = = 1 P.A = 00 DELTA 5 ELECTRONIC WEIGHT INDICATOR REFERENCE MANUAL δ.5rm_ of 21

19 14 TECHNICAL SPECIFICATIONS CPU CHARACTERISTICS MCU with 8K FLASH-ROM, 256 b RAM, 64W serial EPROM. SELF DIAGNOSTICS Hardware and Software, MCU watchdog. Memory failure. I/O failure. Program check. COMMUNICATIONS Printer port RS232C SIMPLEX with busy control. LOAD CELL EXCITATION + 5 Vdc for 6-350OHM Load cells 4 wire connection. SENSITIVITY min 1 μv / digit. FULL SCALE RANGE 0,1-3,0 mv / V. INPUT AMPLIFIER Auto - zeroed. Input noise 0.5μVp - p. Analogue filter 2pole 5Hz A/D CONVERTER Three phase integrating dual slope ratiometric. Integration time msec KBD programmable internal counts max. LINEARITY Better than 0,01% of full scale. SPAN TEMP - COEFF + 5 ppm / o C ZERO TEMP - COEFF + 8 ppm / o C DISPLAY RESOLUTION division max. DISPLAY KEYBOARD 6 digit LED or LCD plus annunciators for NET, MOTION, BATTERY CHARGE (For LCD model). 5 key membrane type with tactile feedback. DELTA 5 ELECTRONIC WEIGHT INDICATOR REFERENCE MANUAL δ.5rm_ of 21

20 15 INSTALLATION SET UP & CALIBRATION RECORD DATA Maximum weighing capacity kg Minimum weighing capacity kg Display division kg Verification division kg Tare kg + 100% cap. Zeroing range + 10% capacity Auto-Zero Tracking Yes/No Auto-Zero on power up Yes/No Digital filter Program number P051(LED) / P051-L (LCD) Production serial number Date of software issue Print type (Parameter 2.t in setup 2) Par SETUP 2 2.P 2.t 3.P 2.L 4.P 2.r 5.P 2.A 6.P 2.F 7.P 2.b P.A P Date:.. Installator:.. DELTA 5 ELECTRONIC WEIGHT INDICATOR REFERENCE MANUAL δ.5rm_ of 21

21 GUARANTEE CERTIFICATE We guarantee the proper operation and either cover free restoration of any probable malfunction of the electronic indicator at our premises or replacement of the electronic indicator (according to our company's judgement) for the period of 18 months from the delivery date of the electronic indicator, provided that: 1. The damage did not occur by fault of the buyer/-s or by not following the instructions. 2. No intervention of non authorised by LEON ENGINEERING personnel has taken place for checking or repairing the equipment. 3. The WARRANTY RETURN CARD has been returned to LEON ENGINEERING. In case of fault the unit should be returned to LEON ENGINEERING at the buyer's expenses. E Q U I P M E N T M O D E L : δ. 5 S E R I A L N U M B E R :... Warranty Return Card Please complete and return this card to LEON ENGINEERING S.A. in order to have your new Indicator registered for warranty. Please keep Guarantee Certificate for your records. Model Serial Number Date Received P.O. Number Dealer from which this indicator was purchased? Individual responsible for this purchase Your Company's Name Address City State Postal Code Country Telephone Fax Where did you hear about of LEON ENGINEERING's products? Local Dealer Magazine Add Direct Mail Exhibition Other How many additional indicators of this type will you require? Will you be purchasing any of the below in One month Three months Six months Over six months Weigh bridges Platform Scales Batching systems Weighing machines Computer based weighing systems DELTA 5 ELECTRONIC WEIGHT INDICATOR REFERENCE MANUAL δ.5rm_ of 21

USER INSTRUCTION MANUAL FOR LOADCELL TRANSMITTER MODEL TDC/I/0550 (SOFTWARE: VER2A) INDEX

USER INSTRUCTION MANUAL FOR LOADCELL TRANSMITTER MODEL TDC/I/0550 (SOFTWARE: VER2A) INDEX DOCUMENT NO: TDC 0550 MANUAL - 2 1.0) INTRODUCTION. PAGE 2 1.1) ABOUT THIS MANUAL. PAGE 2 1.2) INTRODUCTION. PAGE