Lutron Electronics GM-5000 User manual

5000 g x 1 g, RS-232/USB
DIGITAL SCALE
Model : GM-5000
Your purchase of this DIGITAL SCALE marks a step forward for
you into the field of precision measurement. Although this
DIGITAL SCALE is a complex and delicate instrument, its durable
structure developed. Please read the following instructions
carefully and always keep this manual within easy reach.
OPERATION MANUAL

TABLE OF CONTENTS
1. FEATURES .....................................................................................................1
2. SPECIFICATIONS .........................................................................................1
3. FRONT PANEL DESCRIPTION ..................................................................2
3-1 Platform....................................................................................................2
3-2 Tare Button..............................................................................................2
3-3 Display .....................................................................................................2
3-4 Power Switch ...........................................................................................2
3-5 Rubber Pads ...........................................................................................2
3-6 Battery Cover/Compartment .................................................................2
3-7 DC 9V receptacle ...................................................................................2
3-8 RS232 Output Socket............................................................................2
3-9 Unit Switch ...............................................................................................2
4. PLATFORM INSTALLATION .........................................................................3
5. MEASURING PROCEDURE........................................................................4
6. BATTERY REPLACEMENT ...........................................................................5
7. DC 9V AC/DC ADAPTER OPERATION.....................................................5
8. RS232 PC SERIAL INTERFACE.................................................................5

1
1. FEATURES
* 5000 g measuring capacity with 1 g resolution.
* RS 232 PC serial interface.
* Full capacity tare function capability.
* Only one control button on front panel, easy operation.
* Battery or DC adapter power supply.
* Large LCD display.
* Stainless platform.
* Durable & portable housing plastic case.
* LOAD CELL transducer, high precision.
* Gram and Oz display unit, select by rear switch.
* Use exclusive microprocessor LSI-circuit, high reliability.
2. SPECIFICATIONS
Display
20.9 mm(0.8") LCD, 5 digits w/annunciator.
Measuring Capacity
5000 g/176 oz.
Resolution
1 g/0.05 oz.
Min. Display Weight
3 g/0.15 oz.
Accuracy
±( 0.3 % + 1 d ).
*23±5 ℃.
* Spec. tested under the environment RF
Field Strength less than 3 V/M &
frequency less than the 30 MHz only.
Unit Select
g or oz, select by internal slide switch.
Sampling Time
Approx. 0.5 second.
Tare Control
Full capacity.
Transducer
Load cell.
Circuit
Exclusive LSI-circuit.
Data Bus
RS-232 serial output.
Cabinet Size
250 x 190 x 70 mm
Platform Size
185 x 185 mm.
Operating Temp.
0 to 50 ℃( 32 to 122 ℉).
Operating Humidity
Less than 80% RH.
Weight
1542 g/ 3.4 LB. * not include batteries.
Power Supply
6 x 1.5V AA (UM-3) BATTERY,
or DC 9V adapter.

2
Power Consumption
Approx. DC 9 mA.
Accessory Included
Manual........ 1 PC.
Interface cable
* optional
* USB cable, USB-01.
* RS232 cable, UPCB-02.
Software
* optional
Data acquisition software
Model : SW-U801-WIN
Excel data acquisition software
Model : SW-E802
3. FRONT PANEL DESCRIPTION
Side view Bottom view
Front view Back view
Fig. 1

3
3-1 Platform
3-2 Tare Button
3-3 Display
3-4 Power Switch
3-5 Rubber Pads
3-6 Battery Cover/Compartment
3-7 DC 9V receptacle
3-8 RS232 Output Socket
3-9 Unit Switch
4. PLATFORM INSTALLATION
Fig. 2

4
5. MEASURING PROCEDURE
1) Place scale on a flat hard surface.
Adjust the 'Rubber Pad"(3-5, Fig. 1) until the scale
install under the horizontal position completely.
2) Set the "gm" or "oz" unit by slide the "Unit Switch"
(3-9, Fig. 1).
* Use the "-" type screw driver to slide the "Unit Switch".
* The scale are preset to the "gm" unit typically.
* Slide the "Unit Switch" to the right position will set to
"gm" unit & the right down corner of LCD will show the
"g" marker.
* Slide the "Unit Switch" to the left position will set to
"oz" unit.
3) Turn the "Power Switch"(3-4, Fig. 1) to the On position.
The Display(3-3, Fig. 1) will show "8.8.8.8.8" for a few
seconds, then "0" will appear again.
4) Apply the load to the platform gently, display will show
the measuring weight values.
* Do not exceed the over load capacity of the scale.
* Over weighting, the display will show "EEEEE".
5) Tare function :
After weighting the first item, press "Tare Button" (3-2,
Fig. 1), scale will reset to zero values automatically.
At the same time, the LCD display will show the "Tare"
mark. Place next weighted item onto scale. Scale will
give weights of the second only.
* If the display show " ------- ", means the
display reading is under the zero, then tare
function should be execute again.
* The max. tare capacity is the full capacity(5000g).
* The "Tare" marker will disappear until "Power Off"
and "Power On" again.

5
6. BATTERY REPLACEMENT
If battery is weak, LCD display will show "LO" indicator.
This reminds user to replace new battery.
1) Open "Battery Cover"(3-6, Fig. 1) located at the bottom
of the scale.
2) According to the device instruction, place batteries(1.5V AA
size battery x 6 PCs) into the battery compartment &
replace the battery cover.
7. DC 9V AC/DC ADAPTER OPERATION
(Adapter is optional accessory)
1) The scale will also be operated by the household ACV
power source (110/220/240 ACV) with a DC 9V AC/DC
Adapter(capacity 300 mA).
2) Plug the jack from the Adapter into the "DC 9V
receptacle"(3-7, Fig. 1).
3) Now the scale is ready for ACV operation.
8. RS232 PC SERIAL INTERFACE
The instrument features an RS232 output via 3.5 mm
Terminal ( 3-8, Fig. 1).
The connector output is a 16 digit data stream which
can be utilized to the user's specific application.
An RS232 lead with the following connection will be
required to link the instrument with the PC serial port.

6
220324-GM5000
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
The 16 digit data stream will be displayed in the
following format :
Each digit indicate the following status :
D15
Start Word ( 02 )
D14
4
D13
1
D12, D11
Annunciator for Display
g = 57
oz = 58
D10
0
D9
Decimal Point(DP), position from right to the left
0 = No DP, 1= 1 DP, 2 = 2 DP, 3 = 3 DP
D8 to D1
Display reading, D8 = MSD, D1 = LSD
For example :
If the display reading is 1234, then D8 to D1 is :
00001234
D0
End Word ( 0D )
RS232 FORMAT : 9600, N, 8, 1
Baud rate
9600
Parity
No parity
Data bit no.
8 Data bits
Stop bit
1 Stop bit
Scale
(3.5 mm jack plug)
PC
(9W 'D" Connector)
Center Pin.................................................. Pin 4
(3.5
mm jack plug)
Ground/shield ................................................ Pin 2
2.2 K
resistor
Pin 5