SCP1000 PCB3 - Murata Electronics North America

Doc.Nr. 8268000.03

SCP1000 DEMO KIT

User Manual

SCP1000 DEMO KIT

User Manual

VTI Technologies Oy 2/19

www.vti.fi Doc.Nr. 8268000.03 Rev.0.03

TABLE OF CONTENTS

1 Introduction .........................................................................................................................3

2 Quick start for using the SCP1000 DEMO KIT..................................................................3

3 Hardware..............................................................................................................................4

4 GUI software........................................................................................................................5

4.1 GUI software displays ...............................................................................................................7

4.1.1 USB serial port selection.......................................................................................................7

4.1.2 Start up and Reset demo ......................................................................................................7

4.1.3 Meas results..........................................................................................................................8

4.1.4 Register config ......................................................................................................................8

4.1.5 Pres offset adjustment...........................................................................................................9

4.1.6 Setup...................................................................................................................................10

4.2 Uninstalling the GUI and USB driver......................................................................................10

5 Using the SCP1000 demo without the GUI software......................................................11

5.1 Establishing the connection...................................................................................................11

5.2 Communication commands....................................................................................................12

6 Using two SCP1000 demo kits simultaneously..............................................................14

7 USB interface board circuit diagram...............................................................................15

8 USB interface board PCB layout......................................................................................17

9 Troubleshooting................................................................................................................18

10 Document Revision History .............................................................................................19

11 Contact Information..........................................................................................................19

SCP1000 DEMO KIT

User Manual

VTI Technologies Oy 3/19

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1 Introduction

The SCP1000 pressure demonstrator is designed to give a quick access and understanding on the

performance and capabilities of the SCP1000 pressure component. This document describes how

to install the required software and how to use the SCP1000 DEMO KIT and Graphical User

Interface (GUI) software version 2.5.

SCP1000 DEMO KIT package include s:

• SCP1000-D01 sensor sold ered on chip carrier PCB (see Figure 1 on next page)

• USB interface card inside the demo box (see Figure 1 on next page)

• USB cable

• CD-ROM with documentation, drivers and GUI software running on PC

The SCP1000 DEMO KIT supports SCP1000 -D01 and SCP1000-D11 sensors.

The graphical user interface is designed and tested to run in most commercial computers. System

requirements:

• Operating system: Windows XP or Windows 2000 with SP1 or higher

• Communication interfa ce: USB 2.0 or 1.0

The SCP1000 demo is powered from the USB port. For minimizing the noise introduced by the

host PC in pressure measurements, a laptop operating on battery is recommended (mains supply

disconnected).

2 Quick start for using the SCP1000 DEMO KIT

Please follow the steps below:

1. Insert CD-ROM

2. Setup the hardware

- Connect the USB cable to the demo and to PC's USB port

3. Install the USB driver, after the PC has found the device

- When the PC detects the new USB device, do not let Windows to detect the driver,

address the USB driver from folder:

CD-ROM\SCP1000 demo - Virtual Com Port Drivers\

- NOTICE, if you have already installed the SCA3000 demo to your computer, you

do not need to install the USB driver for the SCP1000 demo

4. Install the GUI software

- Install the GUI software by running the “setup.exe" from folder:

CD-ROM\SCP1000 demo - ver 2.5 – Installer

- Do not change the installation destinatio n

5. Start the GUI software

- From Start → Programs → SCP1000-USB-DEMO-VER.2.5

→ SCP1000-USB-DEMO-VER.2.5

When using the SCP1000 DEMO KIT with GUI software:

• The DEMO KIT should be con nected to PC before the GUI software is started

• Exit the GUI software before unplugging the DEMO KIT from PC (button in upper right

corner of the GUI)

• After GUI software is stopped, the DEMO KIT can be unplugged from the PC (the SCP1000

DEMO KIT uses virtual serial COM port driver, so it can not be found as a USB device).

SCP1000 DEMO KIT

User Manual

3 Hardware

The SCP1000 DEMO KIT USB interface board and SCP1000 PCB are shown in Figure 1. The

USB interface card converts the USB interface to SPI or TWI interface. The SCP1000 pressure

sensor is soldered on chip carrier PCB which is connected to interface board with board to board

connectors.

The SCP1000 DEMO KIT block diagram is prese nte d in Figure 2 below.

SCP1000 PCB1

with soldered SCP1000-D01

USB interface

board

USB cable

SCP1000 sensor

pin#1 ATST

TRIG

DRDY

CLK

DVDD

DVSS

pin#7 DVDDS

AVSS pin#14

AVDD

CSB

MISO

MOSI

SCK

PD pin#8

SCP1000 sensor

Demo reset

Figure 1. SCP1000 DEMO KIT USB interface board and SCP10 00 PCB.

Virtual

serial port

drive

GUI sw

USB cable

USB interface board

SCP1000

PIC

µC

µC_VDD

SPI/TWI

data transfer

AVDD

+3.3V

DVDD

FTDI

UART

FT232BM

Serial data

transfer

Serial data

transfer

Figure 2. SCP1000 USB demo block diagram.

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SCP1000 DEMO KIT

User Manual

4 GUI software

SCP1000 DEMO KIT is controlled via USB serial port by GUI software. The software must be

installed into location that is suggested during installation procedure.

Screen capture of the GUI is presented i n Figure 3.

Figure 3. SCP1000 DEMO KIT Graphical User Interface.

Table 1. The numbered items in Figure 3.

11.

13. 12. 10. 8.

Item Description

1 Temperature display, [°C].

2 Exit software, [Esc]-button also.

3 Trigger measurement, visible only in low power measurement mode.

4 Scale pressure and temperature displays, press "Reset displays" to apply

the changes.

5 Capture pressure data to file, browse for file name and location, then

press "start data logging". Every data point is saved by default, the

number of saved data points can b e reduced.

6 Open / close the window extension with arrow button.

7 Pressure [mbar] and altitude [m] displays.

8 Select units: [mbar], [°C], [m] or [inHg], [F], [ft].

9 Selected sensor type and GUI software version number.

10 Averaging ON / OFF, number of samples for averaging.

11 Reset pressure and altitude displays, and apply new scaling parameters.

12 Pull down menu for SCP1000 measu rement mode.

13 Pull down menu for GUI display mode.

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SCP1000 DEMO KIT

User Manual

The SCP1000 GUI software flow chart is presented in Figure 4 below.

Start the GUI sw

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Figure 4. SCP1000 GUI sw flow chart.

MCU:

- resets the SCP1000

- detects the sensor type

- detects the serial bu s

(SPI/TWI)

- detects the TWI

address if needed

Low noise configuration,

MCU reads the offset

adjustment from the

SCP1000 EEPROM (1

Activate

High resolution

measurement mode

Meas results display;

pressure results are

corrected by values read

from EEPROM (1,2

Back to

Meas results

display

Displays: register

config, pres. offset

adjustment, setup,

reset demo

User changes

display from pull

down menu

NO YES

1) more information on SCP1000 offset adjustment in Figure

9 and in TN48

2) If the pressure offset is not adjusted (the offset difference in

EEPROM is zero), the MCU corrects the SCP1000 output

value with zero value (e.g the SCP1000 raw output data)

SCP1000 DEMO KIT

User Manual

4.1 GUI software displays

The GUI software has four different display modes. All displays are presented below. Displays can

be selected from the "Display" pull down menu (see #12 in Figure 3 and Table 1).

4.1.1 USB serial port selection

If more than one USB serial port devices

(such as SCA3000 or SCP1000 demos)

are connected to PC, user must double

click on the correct USB serial port from

the pop-up window (Figure 5). If user does

not know the correct USB serial port

number, please disconnect all other USB

serial port devices from the PC and restart

the GUI software.

Figure 5. USB serial port selection pop-up window.

4.1.2 Start up and Reset demo

During the GUI software start up or after

selecting "Reset demo" from the "Display"

pull down menu, the MCU inside the

SCP1000 demo detects automatically the

correct sensor type and serial bus

(SPI/TWI). Then the MCU reads the offset

adjustment values from the SCP1000

internal EEPROM. SCP1000 is also

initialised during the start up screen.

The MCU software version as well as

SCP1000 sensor type is displayed in text

field.

Figure 6. Start up screen.

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User Manual

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4.1.3 Meas results

Meas results is a continuously scrolling

graph for pressure [mbar] and altitude [m]

data, see Figure 7. User can:

- Change the pressure and temperature

scales, press "Reset display" to apply

changes

- Change the averaging factor

- Set averaging ON/OFF. When

averaging is OFF, the raw SCP1000

data is displayed

- Capture the pressure, altitude and

temperature data in to file. The data is

saved with the same averaging factor

as it is displayed on the screen. By

default every data point that is

displayed on the screen are saved.

Optionally user can save for example

only every 10th data point displayed on

the scrolling graph.

- Select the between the following units:

Figure 7. Meas results display.  [mbar], [°C], [m] or

 [inHg], [F], [ft]

Some of the actions/controls listed above can be found from the extension part of the window,

which can be accessed by pressing the arrow button (see Figure 3 and Table 1 ).

The "Trig measurement" button is displayed in the extension part of the window only when the

SCP1000 is in low power measurement mode.

The Table 5 information

is presented is this

display also 4.1.4 Register config

in to SCP1000 sensor internal registers.

Registers can be read and written. The

written data format can be changed

between binary and hexadecimal by

pressing the "Bits / Hex" button.

Information of the selected register is

displayed below the "Register address" pull

down menu.

Please refer to the Table 5 and to the

document "SCP1000 Product Family

Specification 8260800" for more detailed

information on SCP1000 registers.

Figure 8. Register config display.

SCP1000 DEMO KIT

User Manual

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4.1.5 Pres offset adjustment

In pressure offset adjustment display user

can adjust the absolute pressure offset

value of the SCP1000. The MCU inside the

demo box can read and write the pressure

offset adjustment of the SCP1000 by using

the SCP1000 internal EEPROM registers'

USERDATA1 (0x29) and USERDATA

(0x2A). The offset adjustment is performed

in high resolution measurement mode.

After SCP1000 offset is adjusted in this

display, user can verify the calibration

results in MEAS RESULTS display.

In offset adjustment display user can:

Figure 9. Pressure offset adjustment display.

- Program the SCP1000 offset adjustment in to the SCP1000 internal EEPROM registers

USERADATA1 and USERDATA2 ("Start offset adjustment" button)

- Read the current SCP1000 offset adjustment data from the two EEPROM registers ("Read

current adjustment data" button)

- Reset the SCP1000 offset adjustment data by writing zeros in to two EEPROM registers ("Zero

offset adjustment data" button)

Please refer to the following document s:

- "TN48 SCP1000 Pressure Offset Adjustment" for more detailed information on offset zeroing

and offset adjustment bit level presentation that is used in this demo

- "SCP1000 Product Family Specification 8260800" for more detailed information SCP1000

EEPROM register reading/writing

SCP1000 DEMO KIT

User Manual

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4.1.6 Setup

Setup display presents the SCP1000

product type inside the demo box. The

virtual serial COM port number in use can

be viewed from "Serial port" display. This

information is needed if the SCP1000

DEMO KIT is used without the GUI

software, see further details from section 5.

In this example the SCP1000 DEMO KIT

uses COM4 serial port.

Standard window frames can be enabled /

disabled. In Figure 10 the window frames

are disabled.

Figure 10. Setup display.

4.2 Uninstalling the GUI and USB driver

The GUI software and the USB driver (FTDI Serial Converter Driver) can be removed from

Windows Control Panel Add/Remove Programs. Please notice that removing the FTDI Serial

Converter Driver (USB driver) may affect on functionality of some other programs (such as

SCA3000 demo kit GUI).

SCP1000 DEMO KIT

User Manual

5 Using the SCP1000 demo without the GUI software

SCP1000 DEMO KIT can be used also without the GUI software. Serial communication between

the SCP1000 USB demo and PC can be controlled with the GUI software or by Windows

HyperTerminal software (serial virtual com port driver converts the USB demo to a COM port

device).

5.1 Establishing the connection

After the SCP1000 DEMO KIT USB serial com port driver is installed, the HyperTerminal

connection can be opened from SCP1000 demo CD-ROM or from:

→ Start → Programs → Acce ssories → Communicati ons → HyperTerminal

The communication settings are presented in Table 2 below

Table 2. SCP1000 USB demo HyperTerminal communication settings.

Parameter Value

Bits per second 38400

Data bits 8

Parity None

Stop bits 1

Flow control None

The correct COM port number depends on the PC and used USB port.

Please notice that GUI software and Windows HyperTerminal software can not be open at the

same time. Follow the steps below to open the HyperTerminal connection:

1. Connect SCP1000 DEMO KIT with USB cable to PC

2. Open GUI software to see the correct COM port number (SETUP display, see Figure 10).

3. Close the GUI software.

4. Open the pre-configured Windows HyperTerminal software from the DEMO KIT CD-ROM:

SCP1000_Demo_pre-configured_HyperTerminal_connection.ht

5. Type ' * ' (asterisk character), the SCP1000 DEMO KIT sends an info text to HyperTerminal

(see Figure 11). If the HyperTerminal software is unable to connect the SCP1000 DEMO

KIT or the info text does not appear,

- Press

disconnect

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- change the COM port number to correct from port properties ,

- press

connect ,

- type ' * ' (asterisk characte r) to HyperTerminal

until info text appears to HyperTerminal screen (see Figure 1 1).

6. After the info text appears on HyperTerminal, the connection between the SCP1000 DEMO

KIT and HyperTerminal software is established.

Connection properties

1. Select

COM port

2. Connect

Figure 11. Windows HyperTerminal with SCP1000 demo info text.

SCP1000 DEMO KIT

User Manual

5.2 Communication commands

After the HyperTerminal connection to SCP1000 USB demo is established, user can communicate

with the SCP1000 in side the USB demo according to the communication flow chart presented in

Figure 12 below. The register listing is presented in Table 5, see SCP1000 datasheet for further

information.

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Anywhere resets

MCU software

Wait for start

character

’ * ’

Power

Mode

selection

Low power

mode? Trig from

serial bus?

Measure Pres and

Temp, send data to PC

Start

character

’

Measure Pres and

Temp, send data to PC

After "Power On and *" or "## and *" ;

- MCU detects the SCP1000 product type

and

- serial bus (SPI or TWI?)

- MCU reads the offset difference from

SCP1000 EEPROM

- MCU does not write the low noise

configuration commands

Edit

registers

WD = Write Direct register

RD = Read Direct register

WI = Write Indirect register

RI = Read Indirect register

WE = Write EEPROM register

RE = Read EEPROM register

RS = SCP1000 startup sequence

LN = Low noise configuration

VD = MCU version

RP = Pressure offset adjustment

All accessible registers are listed in Table 5.

WD,

RD,…

Measurement mode selection:

0A = High resolution mode

09 = High speed mode

0B = Ultra low power mode

05 = Low power mode (17bits res.)

0D = Low power mode (15bits res.)

0C = Trig command in low power

mode (after resolution is selected)

0A, 09, …

Yes ’ * ’

Yes

No Yes

Figure 12. SCP1000 USB demo communication flow chart.

SCP1000 DEMO KIT

User Manual

The pressure (Pres) and temperature (Temp) is sent to PC in [Pa] and in 10×[°C] format. Example of

SCP1000 USB demo output data in high resolution mode below:

%102778 256$ → pressure = 102778 Pa temperature = 25.6 °C

%102779 257$ → pressure = 102779 Pa temperature = 25.7 °C

%102776 256$ → pressure = 102776 Pa temperature = 25.6 °C

Commands that are used to control the MCU of the USB demo are listed in Table 3 below.

Table 3. Commands for the USB demo MCU.

MCU

Command Command description

## User can reset the MCU software and jump to the sw beginning by giving

this command

* Start / interrupt command

VD Display MCU version details

FF Set MCU software to measurement mode selection mode

Commands that are used to read/write the SCP1000 registers and to control the SCP1000 are

listed in Table 4 below. The register address and data is always in hex format unless otherwise

noted.

Table 4. Commands for the SCP1000.

SCP1000

command Command description

WD Write SCP1000 direct re gister

RD Read SCP1000 direct register, register width is 08 or 16 (in dec format)

WI Write SCP1000 indirect register,

MCU performs the indirect write operat ion via 3 direct registers, please

see section 3.3.1 in “SCP1 000 Product Family Specification 8260800” for

further details

RI Read SCP1000 indirect register,

MCU performs the indirect read operation via 3 direct registers, please

see section 3.3.1 in “SCP1 000 Product Family Specification 8260800” for

further details

WE Write SCP1000 EEPROM register,

MCU performs the EEPROM write operation via 3 direct registers, please

see section 3.4.1 in “SCP1 000 Product Family Specification 8260800” for

further details

RE Read SCP1000 EEPROM register,

MCU performs the EEPROM read operation via 3 direct registers, please

see section 3.4.2 in “SCP1 000 Product Family Specification 8260800” for

further details

RS Reset SCP1000:

- set PD pin high, set PD pin low

- perform the SCP1000 initialization status check, please see section

2.1.2.1 in “SCP1000 Product Family Specification 8260800” for further

details

LN Low noise configuration:

- write 0x2D to direct register ADDPTR (0x02)

- write 0x03 to direct register DATAWR (0x01)

- write 0x02 to direct register OPERATION (0x03)

Please see section 2.1.3 in “SCP1000 Product Family Specification

8260800” for further details

RP Reference pressure (for pressure offset adjustment)

Please see "TN48 SCP10 00 Pressure Offset Adjustment" for further

details.

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SCP1000 DEMO KIT

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All accessible SCP1000 registers are listed in Table 5 below, please refer to the document

"SCP1000 Product Family Specification 8260800" for more detailed information on SCP1000

registers. The register address is always in hex format unless otherwise noted.

Table 5. List of SCP1000 direct and indirect access registers and EEPROM registers.

Address

SPI TWI Name Description Mode

(R, W, RW)

access Width

[bits]

00 REVID ASIC revision number R Direct 8

01 DATAWR Indirect register access data RW Direct 8

02 ADDPTR Indirect register access pointer RW Direct 8

03 OPERATION Operation register RW Direct 8

04 OPSTATUS Operation status R

Direct 8

06 RSTR ASIC software reset W Direct 8

07 STATUS ASIC top-level status R Direct 8

1F 7F DATARD8 Pressure output data (MSB) or

8 bit data read from EEPROM R Direct 8

20 80 DATARD16 Pressure output data (LSB) or

8-bit data read from indirect register R Direct 16

21 81 TEMPOUT 14-bit temperature output data R Direct 16

00 CFG Configuration register RW Indirect 8

05 TWIADD TWI address W Indirect 8

09 CFG2 MISO configuration RW Indirect 8

2D MODTEST2 Noise level configuration W Indirect 8

29 USERDATA1

User data RW EEPROM 8

2A USERDATA2 User data RW EEPROM 8

2B USERDATA3

User data RW EEPROM 8

2C USERDATA4 User data RW EEPROM 8

RW – Read / Write register, R – Read only register.

6 Using two SCP1000 demo kits simultaneously

In some applications, such as air conditioning controlling or air flow measurements, differential

pressure measurement is required. To support these kinds of applications two (or even more)

SCP1000 demo kits can be used simultaneously on one PC.

In order to use two SCP1000 demo kits simultaneously follow the steps below:

1. Install the GUI software and USB driver as instructed above (see section 2).

2. Connect the 1st SCP1000 demo kit to PC.

3. Start the GUI software.

4. When the 1st SCP1000 demo kit and it's GUI software is running, connect the 2nd SCP1000

demo kit to PC.

5. Install the USB driver if required (the USB driver has to be installed separately for each

USB port, see inst ructions in section 2).

6. Find the location of the SCP1000 demo kit GUI software exe-file (the default installation

path is C:\Program Files\SCP1000-USB-DEMO-VER.2.5).

7. Copy the file "SCP1000-USB-DEMO-VER.2.5.exe" to other name (for example

"Copy of SCP1000-USB-DEMO-VER.2.5.exe").

8. Start the GUI software for the 2nd SCP1000 demo kit by running the

"Copy of SCP1000-USB-DEMO-VER.2.5.exe".

When both demo kits are connected to one PC, the SCP1000 data can be logged to separate files

as instructed in section 4.1.3. If the both demo kits are used for data logging purposes, the data

can be synchronized with the time stamp in the result file (time is from the PC's system clock). The

Windows HyperTerminal can also be used with two SCP1000 demo kits (open own HyperTerminal

connection for each demo kit).

Please notice, that the two demo kits may not work simultaneously if they are connected to PC via

an USB hub (in such case, try connecting the demo kits directly to PC with out USB hub).

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SCP1000 DEMO KIT

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7 USB interface board circuit diagram

SCP1000 demo USB interface board circuit diagram is presented in following pages.

Figure 13. SCP1000 DEMO KIT USB interface board circuit diagram (sheet USB).

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Figure 14. SCP1000 DEMO KIT USB interface board circuit diagram (sheet MCU).

SCP1000 DEMO KIT

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8 USB interface board PCB layout

SCP1000 DEMO KIT USB interface board PCB layout and silk screen is presented below.

Figure 15. SCP1000 demo USB interface board PCB layout (left, top / right, bottom ).

Figure 16. SCP1000 demo USB interface board silkscreen (left, top / right, bottom ).

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9 Troubleshooting

Due to many PC environments, the interoperability can be limited. The SCP1000 DEMO KIT has

been tested with DELL laptops (Latitude D600, D610, D410) and desktop PCs with Win2000 and

WinXP operating system. If the SCP1000 DEMO KIT does not work properly or it’s operation is

limited, the following items may help to sort the problems out:

• Change the USB port where the demo is connected

• SCP1000 demo may not work properly if your PC has multiple USB serial ports installed.

Please remove all other USB serial port devices (including the SCA3000 demo).

• Close Windows HyperTerminal software, if you have used it.

• Re-install the FTDI USB Serial port driver:

1. Unplug the demo from PC

2. Uninstall the "FTDI USB Serial Converter Drivers" from "Control Panel" →

"Add/Remove programs".

3. Connect the SCP1000 DEMO KIT to PC and re-install the drivers as Windows

detects the demo, see section 2.

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SCP1000 DEMO KIT

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10 Document Revision History

Version Date Change Description

0.01 30.08.2006 First release for GUI version 2.4,

Document "TN49 SCP1000 register access with USB-demo" is included in to this document

0.02 08.09.2006 GUI software updated to version 2.5 (user can select the used units in 'Meas results' display)

0.03 05.02.2007 Section "6 Using two SCP1000 demo kits simultaneously" added.

11 Contact Information

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(head office)

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Finland

Tel. +358 9 879 181

Fax +358 9 8791 8791

E-mail: sales@vti.fi

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E-mail: sales.de@vti.fi

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E-mail: sales@vtitechnologies.com

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To find out your local sales

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