Tru-Test 703 User manual

WID70003 Model 703 User Manual Revision 2
Tru-Test Model 703
User Manual

Copyright TRU-TEST Limited, 1997
No part of this document may be photocopied or reproduced
without the prior written consent of TRU-TEST Limited.

Contents
i
Contents
About This Manual...................................................1
System Overview.......................................................3
Installation.................................................................6
Calibration..............................................................7
Operation...................................................................8
Safety .....................................................................8
Keypad...................................................................8
Display...................................................................9
Switching On........................................................10
Live Mode............................................................10
Set Keys ...............................................................11
Weighing..............................................................11
Switching Off.......................................................11
Automatic Power Off...........................................12
Changing Units of Measurement .........................12
Setup Mode..............................................................13
Zeroing.....................................................................17
Power Up Zero.....................................................17
Automatic Zero....................................................18
Manual Zero.........................................................19
Taring.......................................................................20
Taring a Container ...............................................20
Setting a Tare.......................................................21

Contents
ii
Clearing a Tare.....................................................22
Example use of Tare and Zero.............................22
Fleece (Fine Weight) Mode.....................................23
Setting Resolution....................................................24
Entering Tag (ID) Numbers...................................25
Entering Tag Prefixes (Pretag).............................25
Clearing Tag Prefixes (Pretag).............................26
Entering Individual Animal Tags.........................26
Making Corrections..............................................28
Entering Condition Codes......................................29
Making Corrections..............................................30
Recording.................................................................31
Manual Recording................................................31
Automatic Weight Recording ..............................32
Turbo Setting........................................................34
Displaying Statistics................................................35
Displaying Records..................................................36
Deleting Records......................................................38
Editing Records.......................................................39
Inserting Records ....................................................40
Searching Records...................................................42
Searching for Minimum or Maximum Weight ....43
Multiple Files...........................................................44
Selecting Files......................................................45
Scanning Files......................................................46

Contents
iii
Finding a File by Tag (ID) Search .......................47
Clearing Files.......................................................47
Clearing all of Memory........................................48
Drafting (Sorting by Weight).................................49
Setting Draft Limits..............................................49
Weighing in Draft Mode......................................50
Clearing Draft Limits...........................................51
Displaying Statistics for Draft Ranges.................51
Weight Gain.............................................................52
Setting Up for Weight Gain .................................52
Setting File Dates.................................................53
Clearing Dates......................................................54
Displaying Weight Gain During Weighing..........54
Displaying Weight Gain After Weighing ............55
Printing Weight Gain Reports..............................56
Clearing the Gain Reference File Number...........56
Weight Gain Drafting .............................................58
Weight Gain Drafting Check List........................59
Weight Gain Statistics.............................................60
Tag Number Checking............................................62
Setting Up for Tag Checking ...............................62
Printing Reports......................................................64
Reports Available.................................................66
Global (all files) Reports......................................71
TRU-TEST MP400 Printer..................................71

Contents
iv
TRU-TEST Citizen Model Printer.......................72
Group Weighing Mode ...........................................73
Accumulating Group Weights..............................73
Making Corrections..............................................74
Displaying Statistics.............................................74
Displaying Records..............................................75
Printing Reports ...................................................75
Using the Indicator as a Calculator.......................76
Using the Indicator as a Notepad...........................78
Quick Reference Section.........................................79
Typical Weighing Session ...................................79
Keys .....................................................................80
Display Pointers...................................................85
Display Messages.................................................86
Care and Maintenance............................................94
Internal Battery ....................................................95
Internal Battery Charging.....................................96
Troubleshooting.......................................................98
Service Centres ..................................................110
Technical Information ..........................................112
Communications Port.........................................112
Downloading to a Computer..............................114
Remote Control by Computer............................115
Printer Interfacing ..............................................120
Electronic Tag (EID) Reading ...........................121

Contents
v
Autoranging .......................................................123
USA Model Indicators ..........................................124
FCC Warning.....................................................124
Weights and Measures Versions..........................126
Model 703 Specifications ......................................127
Index.......................................................................132

About This Manual
1
About This Manual
About This Manual
This manual tells you how to operate the TRU-TEST Model 703
Indicator - the keyboard and display unit for the TRU-TEST 700
Series agricultural weighing system.
Operation of the Indicator is described in the main text of this
manual. Complete lists of keys, display pointers and messages
are given in Quick Reference Sections at the end.
If you are setting up the system for the first time, read the
Installation and Setup section in this manual, also read the
TRU-TEST Loadbars Manual for instructions on installing the
Loadbars.
To gain the best possible performance from your Indicator and
especially if you have an internal battery installed, read the
Care And Maintenance section.
If problems arise, refer to Troubleshooting on page 99 before
contacting your TRU-TEST Service Centre.
Special versions of the Indicator are made which comply with
the regulations for "trade" use in particular countries.
Differences which may apply are noted at the end of sections
under the heading Weights And Measures Versions and
specifications for particular countries are given in Weights And
Measures on page 126.
In this manual, the term "Loadbar" is used to mean "Loadbar,
Suspension Cell or Produce Platform".
The TRU-TEST Model 703 Indicator has dual purpose keys with
different labels on top and bottom. In this manual, only the
relevant part of the key label is shown. The other half is left
blank for clarity.

About This Manual
2
TRU-TEST Model 703
Agricultural Weighing System

System Overview
3
System Overview
System Overview
The TRU-TEST 700 Series is an advanced and versatile
agricultural weighing system. It has been designed with the
benefit of many years of animal weighing experience and is
used by farm management professionals and agricultural
scientists the world over.
The system consists of a microprocessor controlled Indicator
(keyboard and display unit) and one or more Loadbars or
Suspension Cells. The Loadbars are fitted beneath a platform
or crate and the animal's weight is transmitted from the
Loadbars to the Indicator. The Indicator gives a digital readout
of the weight and, through the keypad, provides control over the
processing capabilities of the scale.
Weight data is recorded in the Indicator's memory and can be
output to a printer at any stage during or after weighing.
Comprehensive reports including weights, tag (ID) numbers,
condition codes (or group counts) and statistics can be printed.
The data can also be directly down loaded to a computer via a
cable for permanent storage and further analysis.
A computer program, the TRU-TEST AgLinker, is available from
your TRU-TEST Dealer for easy transfer of data between the
Indicator and a PC computer.
Calibration
On power up, the Indicator automatically identifies and
calibrates itself to the Loadbars connected. The latest Indicators
operate (without re-calibration) with the complete range of
TRU-TEST Loadbars, Suspension Cells or Produce Platforms.
This is known as Standard Calibration and eliminates the need
for time consuming calibration using test weights.

System Overview
4
Applications using other manufacturers' Loadbars, which are
not pre-programmed, can be satisfied using Span Calibration
with known test weights.
Indicator Options
•An internal rechargeable battery is available which
allows the Indicator to be conveniently independent of
any external power supply.
•The TRU-TEST Model 703 can be connected to a
TRU-TEST printer to print results or to a computer for
storing and further processing data.
Reliability
•The TRU-TEST Indicator is a rugged and robust product
designed to withstand the environment associated with
livestock handling. The case is made from extremely
tough, ultraviolet resistant polycarbonate. The keyboard
is completely sealed for all weather operation.
•The Indicator keeps three copies of calibration data in a
separate battery backed memory so that it can recover
automatically after a power failure or electrical
disturbance.
•The Indicator can be unplugged from the Loadbars and
taken indoors for you to study the data and recharge the
battery.
•For livestock weighing, animal movement can sometimes
be a problem with a digital scale. The Indicator
eliminates this problem using SUPERDAMP©- a
sophisticated statistical damping technique.
•The large digital display is easy to read. Stabilisation of
the display is usually extremely fast - within seconds.
Main Features
•LIVE display mode.

System Overview
5
•FLEECE (FINE WEIGHT) Mode for better precision at
low weights.
•Records TAG (ID) numbers along with animal weights.
•Stores up to 7600 animal records in up to 99 files.
•Provides statistics on recorded data.
•Provides a range of different print reports.
•Computer interface to record weights.
•Records condition code or group count for each record.
•Reports on animal weight gain and drafting.
•Provides automatic (hands off) weight recording.
•Span Calibration using known weights if required.
•Separate TARE and ZERO controls.
Weights And Measures Versions
Special versions of the Indicator are available which comply
with the regulations for "trade" use in particular countries.
(See Weights And Measures Versions on page 126).

Installation
6
Installation
Installation
In general, this section needs to be read only when setting up
your system for the first time.
When you unpack your new Indicator, complete and post the
warranty card to ensure you receive the service you are entitled
to.
700 Series System
1. Unpack and install the Indicator mounting stirrup in a
convenient position. Ensure that it is located securely.
2. Install the Loadbars or Suspension Cells according to the
manual which comes with them (TRU-TEST Loadbars
Manual).
3. Run the Loadbar cables to the Indicator, making sure
they are protected from damage.

Installation
7
4. Unscrew the protection caps from the cable plugs and the
Indicator sockets marked CELL1 and CELL2.
Insert the plugs into the sockets and tighten the retaining
collars by hand only. The plugs can go into either socket.
Screw the protection caps together to keep out dirt and
moisture.
5. If an internal battery is installed, charge it by connecting
the Indicator to a good 12 volt DC source, either the
recommended power supply unit or a 12 volt car/bike
battery. Refer to Internal Battery Charging on page 97
for full details.
6. If no internal battery is installed, 12 volts must be
available where the Indicator is mounted. One of the
following options must be used:
•12 volt battery
Note: Red lead to positive terminal.
Black lead to negative terminal.
•Power Supply Unit
230 or 115 volts AC to 13.8 volts DC at 5 amps.
•AC Adaptor
230 or 115 volts AC to 13.8 volts DC at 600mA.
(NOT suitable if a 12V printer is connected).
Use only the power cable supplied by TRU-TEST. Plug it
in to the socket marked 12V DC on the Indicator and
tighten the retaining collar by hand only.
Calibration
The Indicator automatically identifies and calibrates itself to the
Loadbars connected to it. This is known as Standard
Calibration. Span Calibration with known weights can also be
carried out. (See your TRU-TEST Service Centre.)

Operation
8
Operation
Operation
Operating the TRU-TEST Model 703 is straightforward and
logical. Many functions are performed with a single key press.
Safety
To avoid damage, never load the scale further if the
overload message appears on the display.
Keypad
The Indicator comes ready to use with default options set by the
factory. However, you can use the keypad to set your own
preferred options, such as kilograms or pounds for the units of
measure. These options remain in memory until they are
changed, even when the Indicator is not connected to a power
supply.
The keys to use are listed in the instructions below.
A quick reference to all the keys is given on page 80.

Operation
9
Display
Normally the display shows the current live weight on the
platform.
When the Indicator is carrying out an operation, for example re-
setting zero, the display shows an appropriate message.
(If the weight is about half way between two values, it is normal
for the display to switch occasionally between the two, even
while the Stable pointer is On.)
Pointers
A row of triangular pointers at the bottom of the screen give
status information. The labels beneath them show their purpose.
Resolution
The resolution is the smallest weight change that can be
displayed at a particular time (also known as a division), for
example 0.5kg or 1.0kg division size.
The division size close to zero (base resolution) depends on the
Loadbars fitted. (See your TRU-TEST Loadbars Manual.)
The division size automatically changes at particular weight
limits to reflect the accuracy of the scale. (See Autoranging on
page 122.)

Operation
10
Switching On
1. If there is no internal battery, connect the 12 volt supply,
red lead to the positive terminal, black to negative.
2. Press .Display shows:
Message showing that this is not a
Weights and Measures approved
version for trade use:
The scale zeroes itself automatically
(if Power Up Zero is On, see page
17).
Current weight:
If there is no Loadbar connected:
Live Mode
Normally the display shows the current live weight on the
platform (Live Mode). The reading is called Live because it
never locks up - when the weight changes, the reading changes.
You can press any grey key (same colour as LIVE) to initiate its
labeled function.
•To return to Live Mode at any time, press

Operation
11
Set Keys
The set keys are the white coloured bottom half of some keys
on the keypad. They are used to set parameters such as tare
weight or draft limits.
•To activate the set keys,
press .
•Press the appropriate set key.
•Key in the required value.
•Press .
The Indicator automatically returns to live mode.
Weighing
To weigh an animal:
1. Make sure the Indicator is displaying zero. If not, refer
to Zeroing on page 17. (If the display shows a negative
number and the Tare (Net) pointer is On, then a Tare has
been entered, see Taring on page 20.)
2. Move the animal onto the platform or crate making sure
it does not lean on any other structure.
3. Wait for the Stable pointer to come On which shows that
the scale has settled and the reading is reliable.
4. Read the weight displayed.
Switching Off
1. Press .
2. Disconnect the external power supply if required.

Operation
12
Automatic Power Off
The TRU-TEST Model 703 automatically switches Off after 30
minutes if no change in weight or key press is detected. This
conserves battery life when the scale is not being used.
Automatic Power Off can be disabled if required. Contact your
TRU-TEST Service Centre for details.
Changing Units of Measurement
Weights can be displayed in kilograms or pounds.
The kg and lb pointers show which units are being displayed.
To change the units of measure, see Setup Mode on page 13.
Weights And Measures Versions
•Units selection may be disabled
(See Weights And Measures Versions on page 126.)