protech PA-6970 Series, PA-3170 Series User Manual

USER’S
MANUAL

PA-6970 Series

POS System Powered by

Intel® 2nd Gen. Core,

Pentium® , Celeron®

PA-

697

0

Series

M3

PA-6970 Series POS System

With LCD / Touchscreen

COPYRIGHT NOTICE & TRADEMARK

A

ll trademarks and registered trademarks mentioned herein are the property of their

respective owners.

This manual is copyrighted Nov. 2012 (Revised version: Sept

2014). You may not

reproduce or transmit in any form or by any means, electronic, or mechanical,
including photocopying and recording.

DISCLAIMER

T

his user’s manual is meant to assist users in installing and setting up the system. The

information contained in this document is subject to change without any notice.

CE NOTICE

This is a class A product. In a domestic environment this product may cause radio
interference in which case the user may be required to take adequate measures.

FCC NOTICE

This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference
in which case the user will be required to correct the interference at his own expense.

You are cautioned that any change or modifications to the equipment not expressly
approve by the party responsible for compliance could void your authority to operate
such equipment.

CAUTION! Danger of explosion if battery is incorrectly replaced. Replace only with the same
or equivalent type recommended by the manufacturer. Dispose of used batteries according
to the manufacturer’s instructions.

WARNING! Some internal parts of the system may have high electrical voltage. And
therefore we strongly recommend that qualified engineers can open and disassemble the
system. The LCD and Touchscreen are easily breakable, please handle them with extra

Contents

TABLE OF CONTENTS

CHAPTER 1 INTRODUCTION

1-1 About This Manual…........................................................ 1-2

1-2 POS System Illustration…................................................. 1-3

1-3 System Specifications….................................................... 1-5

1-4 Safety Precautions…......................................................... 1-7

CHAPTER 2 SYSTEM CONFIGURATION

2-1 Jumper & Connector Quick Reference Table…................ 2-2

2-2 Component Locations….................................................... 2-3

2-3 How to Set the Jumpers…................................................. 2-5

2-4 COM Port & VGA Connector…………………………... 2-7
2-5 COM Port RI and Voltage Selection……………………. 2-10
2-6 I-Button Connector………………………………………

2-10
2-7 I-Button Function Selection……………………………... 2-11
2-8 LAN & USB Connector………………..……..…………. 2-12
2-9 Mini-DIN & USB Connector……………………………. 2-12
2-10 USB Connector………………………..……..………….. 2-13

2-11 Cash Drawer Connector………………………………..... 2-15

2-12 Cash Drawer Power Selection…………………………... 2-16
2-13 LED Connector………………………………………….. 2-17
2-14 Fan Connector…………………………………………… 2-18
2-15 Power Connector.………………………………………... 2-19

2-16 Power Switch Connector….…………………..………..... 2-19

2-17 Power for Thermal Printer Connector…………………... 2-20
2-18 External Speaker Connector…………………………….. 2-20
2-19 Inverter Connector………………………………………. 2-21
2-20 LVDS Voltage Selection….……………………………... 2-22
2-21 LVDS Connector………………………………………... 2-23

2-22 MSR / Card Reader Connector………………………...... 2-23

2-23 SATA & SATA Power Connector….…………………… 2-24
2-24 Touch Panel Connector….………………………………. 2-25
2-25 Touch Panel Selection…………………………………... 2-26
2-26 Clear CMOS Data Selection………………………..…… 2-27
2-27 Printer Connector………………………………………... 2-28
2-28 LVDS Output Resolution Selection……………………...

2-29

Contents

2-29 Security Override Mode Setting.………………………... 2-29
2-30 LVDS Backlight Type Selection………………………... 2-30

CHAPTER 3 SOFTWARE UTILITIES

3-1 Introduction…................................................................... 3-2

3-2 Intel® Chipset Software Installation Utility…................... 3-3

3-3 VGA Driver Utility….…………………………….…….. 3-4

3-4 LAN Driver Utility…........................................................ 3-5

3-5 Sound Driver Utility…...................................................... 3-6

3-6 Touch Screen Driver Utility….……………..…………… 3-7
3-7 Wireless Driver Utility (Optional)….…………………… 3-8

CHAPTER 4 AMI BIOS SETUP

4-1 Introduction…................................................................... 4-2

4-2 Entering Setup…............................................................... 4-4

4-3 Main…….......................................................................... 4-6

4-4 Advanced …….................................................................. 4-8

4-5 Chipset….……………………………..............................

4-26

4-6 Boot…............................................................................... 4-32

4-7 Security….……................................................................. 4-33

4-8 Save & Exit…................................................................... 4-34

APPENDIX A SYSTEM ASSEMBLY

Exploded Diagram for PA-6970 Open & Close………………… A-3
Exploded Diagram for PA-6970 Stand…………………………. A-4

Exploded Diagram for PA-6970 LCD Holder………………….. A-5
Exploded Diagram for PA-6970 LCD Disassembly……………. A-7
Exploded Diagram for PA-6970 LCD Panel……………………. A-9

Exploded Diagram for PA-6970 Inside Cover....……………….. A-11

Exploded Diagram for PA-6970 Main Board………………....... A-12

Exploded Diagram for PA-6970 Inverter Board………………... A-14
Exploded Diagram for PA-6970 HDD Module………………… A-15
Exploded Diagram for PA-6970 RFID Module………………… A-16
Exploded Diagram for PA-6970 MSR Module………………… A-17
Exploded Diagram for PA-6970 2nd Display…………………… A-18
Exploded Diagram for PA-6970 VFD Module…………………. A-19

APPENDIX B TECHNICAL SUMMARY

Block Diagram…..........................................................................

B-2

Contents

Interrupt Map…............................................................................ B-3

DMA Channels Map…................................................................. B-9

I/O Map….................................................................................... B-10

Watchdog Timer Configuration…................................................ B-13

Flash BIOS Update………........................................................... B-15

Page:1-1

INTRODUCTION

This chapter gives you the information for the PA-6970. It also outlines
the system specifications.

Sections included:

 About This Manual

 POS System Illustration

 System Specifications

 Safety Precautions

Experienced users can jump to chapter 2 on page 2-1
for a quick start.

CHAPTER

1

Chapter 1 Introduction

PA-6970 SERIES USER′S MANUAL

Page: 1-2

1-1. ABOUT THIS MANUAL

Thank you for purchasing our PA-6970 Series System. The PA-6970 is an updated
system designed to be comparable with the highest performance of IBM AT personal
computers. The PA-6970 provides faster processing speed, greater expandability and
can handle more tasks than before. This manual is designed to assist you how to install
and set up the whole system. It contains four chapters and three appendixes. Users can
configure the system according to their own needs.

Chapter 1 Introduction

This chapter introduces you to the background of this manual. It also includes
illustrations and specifications for the whole system. The final section of this chapter
indicates some safety reminders on how to take care of your system.

Chapter 2 System Configuration

This chapter outlines the location of motherboard components and their function. You
will learn how to set the jumper and configure the system to meet your own needs.

Chapter 3 Software Utilities

This chapter contains helpful information for proper installations of the Intel Utility,
VGA Utility, LAN Utility, Sound Utility, and Touch Screen Utility. It also describes
the Wireless Utility.

Chapter 4 AMI BIOS Setup

This chapter indicates you how to change the BIOS configurations.

Appendix A System Assembly

This appendix gives you the exploded diagrams and part numbers of the PA-6970.

Appendix B Technical Summary

This appendix gives you the information about the allocation maps for the system
resources, Watchdog Timer Configuration, and Flash BIOS Update.

Chapter 1 Introduction

PA-6970 SERIES USER′S MANUAL

Page: 1-3

1-2. POS SYSTEM ILLUSTRATION

Front View Rear View

Side View Quarter View

Chapter 1 Introduction

PA-6970 SERIES USER′S MANUAL

Page: 1-4

Rear I/O View

Chapter 1 Introduction

PA-6970 SERIES USER′S MANUAL

Page: 1-5

1-3. SYSTEM SPECIFICATIONS

MAINBOARD (PB-3251)

System

CPU support

 Intel® 3rd Gen. Core i5-3550S 3.0 GHz, L2

Cache-6MB

 Intel® 3rd Gen. Core i3-3220S 3.3 GHz, L2

Cache-3MB

 Intel® 2nd Gen. Core i3-2120 3.3 GHz, L2

Cache-3MB

 Intel® Pentium® G850 2.9 GHz, L2 Cache-3MB
 Intel® Celeron® G540 2.4 GHz, L2 Cache-2MB

Core Logic Intel® H61
Memory 1 x DDR3 SO-DIMM Slot (up to 4GB)
Network 10/100/1000 Base-T Fast Ethernet
OS Support  Windows Embedded POSReady2009/7

 Windows WES2009/7
 Windows XP Pro/7

BIOS AMI SPI BIOS, 8Mbits with VGA BIOS
Power Supply 120 Watt power inside
System Weight 6.6 kg (POS), 5.3kg (PPC)
Dimension (W x H x D)  367mm x 318mm x 259mm (POS)

 367 x 270 x 78mm (PPC)

Certificate FCC/CE

I/O Ports

USB  4 x USB2.0 ports

 1 x USB2.0 on side bezel

Serial Port  3 x DB-9 (COM 2/3/4)

 1 x RJ45 (COM1)

+5/12V Selectable

LAN 1 x RJ-45

Chapter 1 Introduction

PA-6970 SERIES USER′S MANUAL

Page: 1-6

VGA 1 x DB-15 VGA Interface
Cash Drawer 1 x RJ11 (+12V/+24V selectable, default at +12V)
AC in For power cord plug
Line out 1 x phone jack
Keyboard & Mouse 1 x PS/2 (default at keyboard)

Storage

HDD 1 x 2.5” SATA HDD
SD 1 x 2.5” SATA SSD (Optional)

Display

LCD Interface 15” TFT
Max. Resolution 1024 x 768
Brightness 250 cd/m2
Tilt Angel 0~68˚
Touch Screen 5-wire Analog resistive

Environment

Temperature Operation: 0~35˚C (32~95˚F)

Storage: -20~60˚C (-4~140˚F)

Humidity 20~90%

Chapter 1 Introduction

PA-6970 SERIES USER′S MANUAL

Page: 1-7

1-4. SAFETY PRECAUTIONS

The following messages are safety reminders on how to protect your systems from
damages, and extending the life cycle of the system.

1. Check the Line Voltage

a. The operating voltage for the power supply should be within the range of

100V to 240V AC; otherwise the system may be damaged.

2. Environmental Conditions

a. Place your PA-6970 on a sturdy, level surface. Be sure to allow enough

space around the system to have easy access needs.

b. Avoid installing your PA-6970 Series POS system in extremely hot or cold

places.

c. Avoid exposure to sunlight for a long period of time (for example, in a

closed car in summer time. Also avoid the system from any heating device.).
Or do not use the PA-6970 when it has been left outdoors in a cold winter
day.

d. Bear in mind that the operating ambient temperature is between 0˚C and

35˚C (32˚F and 95˚F).

e. Avoid moving the system rapidly from a hot place to a cold place, and vice

versa, because condensation may occur inside the system.

f. Protect your PA-6970 against strong vibrations, which may cause hard disk

failure.

g. Do not place the system too close to any radio-active device. Radio-active

device may cause signal interference.

h. Always shutdown the operating system before turning off the power.

3. Handling

a. Avoid placing heavy objects on the top of the system.
b. Do not turn the system upside down. This may cause the hard drive to

malfunction.
c. Do no allow any objects to fall into this product.
d. If water or other liquid spills into the product, unplug the power cord

immediately.

Chapter 1 Introduction

PA-6970 SERIES USER′S MANUAL

Page: 1-8

4. Good Care

a. When the outside case gets stained, remove the stains using neutral washing

agent with a dry cloth.
b. Never use strong agents such as benzene and thinner to clean the surface of

the case.
c. If heavy stains are present, moisten a cloth with diluted neutral washing

agent or alcohol and then wipe thoroughly with a dry cloth.
d. If dust is accumulated on the case surface, remove it by using a special

vacuum cleaner for computers.

Page 2-1

SYSTEM
CONFIGURATION

Helpful information that describes the jumper and connector settings,
and component locations.

Sections included:

 Jumper & Connector Quick Reference Table

 Component Locations

 Configuration and Jumper settings

 Connector Pin Assignments

CHAPTER

2

Chapter 2 System Configuration

PA-6970 SERIES USER’S MANUAL

Page: 2-2

2-1. JUMPER & CONNECTOR QUICK REFERENCE TABLE

JUMPER / CONNECTOR NAME PAGE

COM Port & VGA Connector COM1, COM3-1, COM4-1, COM4-2,

JVGACOM2

2-7

COM Port RI and Voltage
Selection

JP_COM1, JP_COM2, JP_COM3,
JP_COM4

2-10

I-Button Connector JI-BUTTON1 2-10
I-Button Function Selection

JP14, JP15, JP16 2-11

LAN & USB Connector JRJ45USB23

2-12
Mini-DIN & USB Connector JPS2USB01 2-12
USB Connector USB5, USB 8, USB9;

USB10-1 & USB10-2 (both optional)

2-13

Cash Drawer Connector DRW1

2-15
Cash Drawer Power Selection JP13

2-16
LED Connector JLED1-1, JLED1-2, JLED2

2-17
Fan Connector FAN1, FAN2

2-18
Power Connector J1

2-19
Power Switch Connector SW1, SW2-1, SW2-2

2-19
Power for Thermal Printer

Connector

PRT_PWR1

2-20

External Speaker Connector SPK1, SPK2

2-20
Inverter Connector JINV1, JINV2, JINV3

2-21
LVDS Voltage Selection JP7

2-22
LVDS Connector LVDS1

2-23
MSR/Card Reader Connector PS2_1, PS2_2

2-23
SATA & SATA Power Connector SATA1, SATA2,

JPWR_4P1, JPWR_4P2

2-24

Touch Panel Connector TOUCH1, TOUCH2

2-25
Touch Panel Selection

JP6, JP27 2-26

Clear CMOS Data Selection JP2

2-27
Printer Connector LPT1

2-28
LVDS Output Resolution Selection JP22, JP23, JP24, JP25 2-29
Security Override Mode Setting JP26 2-29
LVDS Backlight Type Selection JP21 2-30

Chapter 2 System Configuration

PA-6970 SERIES USER’S MANUAL

Page: 2-3

2-2. COMPONENT LOCATIONS

M/B: PB-3251

1

JP26

11

1

1 1 1

JP27

JP22

JP23

JP25

JP24

REMOVE

Intel

®

2nd Gen. Core™

CPU Socket

203

73

2

7271

74

1

204

DIMM1

203

73

2

7271

74

1

204

DIMM2

1

1

2

JLED1-1

JINV2

1 7

1 4

1
2

29
30

LVDS1

1

2

6
5

JP7

JP21

15

TOUCH1

1 2

SW2-1

SP1

FAN2

1 4

6 1

PS2_1

2

2

8

JP6

COM4-2

2

1

JI_BUTTON1

TOUCH2

1 5

USB5

1 5

JINV1

1 4

1 2

SPK1

Intel

H61

Battery

1

2

3

4

SW1

6 1

PS2_2

6 1

JINV3

1

2

3

4

5

LINE-OUT1

1

2

SW2-2

1 2

SPK2

1

1
4

4

USB10-1

USB10-2

6 1

JLED1-2

129

10

A1

A4

B1

B4

JRJ45USB23

2421

16

20

5

10

15

1

6

11

JVGACOM2

1

JPS2USB01

4

9

13 14

12

85

43

PWR_IN1

PWR_IN2

21

1 2 3 4

1

2 10

9

125

6

DRW1

COM1

1
2

6

5

JP_COM4

COM4-1

2

1

USB9

1 5

LPT1

26

13

14

1

J1

1

1 4

PRT_PWR1

FAN1

1 4

SIO

USB8

1

5

10 9

12

J_LPC1

1 7

SATA2

1 2

2

65

JP_COM1

1

JP13

1 2

65

JP_COM2

1

JP14

JP15

JP16

6
5

JP_COM3

COM3-1

9

10

JPWR_4P2

41

1

1
2

8

7

JP4

1

7

SATA1

J3GPWR1

JPWR_4P1

1

4

1
2

1

JP2

JLED2

JP21

JINVDRV1

1 2

PA-6970 Front Connector, Jumper and Component Locations

Chapter 2 System Configuration

PA-6970 SERIES USER’S MANUAL

Page: 2-4

M_PCIE1

PA-6970 Rear Connector, Jumper and Component Locations

Chapter 2 System Configuration

PA-6970 SERIES USER’S MANUAL

Page: 2-5

2-3. HOW TO SET THE JUMPERS

You can configure your board by setting the jumpers. A jumper consists of two or three
metal pins with a plastic base mounted on the card, and by using a small plastic "cap",
also known as the jumper cap (with a metal contact inside), you are able to connect the
pins. So you can set-up your hardware configuration by "opening" or "closing" pins.

Jumpers can be combined into sets that called jumper blocks. When jumpers are all in
the block, you have to put them together to set up the hardware configuration. The
figure below shows what this looks like.

JUMPERS AND CAPS

If a jumper has three pins for example, labelled PIN1, PIN2, and PIN3. You can
connect PIN1 & PIN2 to create one setting and shorting. You can either connect PIN2
& PIN3 to create another setting. The same jumper diagrams are applied all through
this manual. The figure below shows what the manual diagrams look and what they
represent.

Chapter 2 System Configuration

PA-6970 SERIES USER’S MANUAL

Page: 2-6

JUMPER DIAGRAMS

JUMPER SETTINGS

Chapter 2 System Configuration

PA-6970 SERIES USER’S MANUAL

Page: 2-7

2-4. COM PORT & VGA CONNECTOR

There are four COM ports enhanced in this board namely: COM1, COM3-1, COM4-1,
COM4-2 and JVAGCOM2.

COM1: COM1 Connector
The pin assignments are as follows:

PIN ASSIGNMENT PIN ASSIGNMENT

1 DCD1 6 DSR1

2 RXD1 7 RTS1

3 TXD1 8 CTS1

4 DTR1 9 RI / +5V / +12V

selectable

5 GND 10 NC

COM3-1: COM3-1 Connectors
The pin assignments are as follows:

PIN ASSIGNMENT PIN ASSIGNMENT

1 DCD3 6 DSR3

2 RXD3 7 RTS3

3 TXD3 8 CTS3

4 DTR3 9 RI / +5V / +12V

selectable

5 GND 10 NC

COM1

210

1

9

Chapter 2 System Configuration

PA-6970 SERIES USER’S MANUAL

Page: 2-8

COM4-1, COM4-2: COM4-1, COM4-2 Connectors
The pin assignments are as follows:

PIN ASSIGNMENT PIN ASSIGNMENT

1 DCD4 6 DSR4

2 RXD4 7 RTS4

3 TXD4 8 CTS4

4 DTR4 9 RI / +5V / +12V

selectable

5 GND 10 NC

Note: All COM ports are selectable for RI, +5V or +12V. For more information, please refer to
“2-5. COM RI & Voltage Selection” of this manual.

210

1

9

210

1

9

Chapter 2 System Configuration

PA-6970 SERIES USER’S MANUAL

Page: 2-9

JVGACOM2: VGA & COM2 Connectors
The pin assignments are as follows:

PIN ASSIGNMENT PIN ASSIGNMENT

1 RED 13 HSYNC

2 GREEN 14 VSYNC

3 BLUE 15 DDCA CLK

4 NC 16 DCD2

5 GND 17 RXD2

6 GND 18 TXD2

7 GND 19 DTR2

8 GND 20 GND

9 +5V 21 DSR2

10 GND 22 RTS2

11 NC 23 CTS2

12 DDCA DATA 24 RI / +5V / +12V

selectable

Note: All COM ports are selectable for RI, +5V or +12V. For more information, please refer to
“2-5. COM RI & Voltage Selection” of this manual.

JVGACOM

2

16

21

20

24

15

10

15

6
11

Chapter 2 System Configuration

PA-6970 SERIES USER’S MANUAL

Page: 2-10

2-5. COM PORT RI & VOLTAGE SELECTION

JP_COM1 , JP_COM2, JP_COM3, JP_COM4:

COM Port RI & Voltage Selection
The jumper settings are as follows:

SELECTION JUMPER

SETTING

JUMPER ILLUSTRATION

RI 1-2

21

65

21

65

216

5

561

2

VCC12 3-4

21

65

21

65

216

5

561

2

VCC 5-6

21

65

21

65

216

5

561

2

Note: Manufacturing Default is RI.

2-6. I-BUTTON CONNECTOR

JI-BUTTON1: i-Button Connector
The pin assignments are as follows:

PIN ASSIGNMENT

1 COM3_DTR_R_I

2 COM3_RXD_R_I

Chapter 2 System Configuration

PA-6970 SERIES USER’S MANUAL

Page: 2-11

2-7. I-BUTTON FUNCTION SELECTION

JP14, JP15, JP16: i-Button Function Selection
The jumper settings are as follows:

SELECTION JUMPER SETTING JUMPER ILLUSTRATION

COM 3 1-2

JP14/15/16

111

i-Button* 2-3

JP14/15/16

111

Note: Manufacturing Default is COM3.

*When these jumpers are set as ‘i-Button,’ the COM3-1 connector will not function.

Chapter 2 System Configuration

PA-6970 SERIES USER’S MANUAL

Page: 2-12

2-8. LAN & USB CONNECTOR

JRJ45USB23: LAN & USB Connector
The pin assignments are as follows:

PIN ASSIGNMENT PIN ASSIGNMENT

1 LAN1_MDIP0 A1 VCC5

2 LAN1_MDIN0 A2 USB2-

3 LAN1_MDIP1 A3 USB2+

4 LAN1_MDIN1 A4 GND

5 LAN1_MDIP2 B1 VCC5

6 LAN1_MDIN2 B2 USB3-

7 LAN1_MDIP3 B3 USB3+

8 LAN1_MDIN3 B4 GND

2-9. MINI-DIN & USB CONNECTOR

JPS2USB01: MINI-DIN and USB Connectors
The MINI-DIN connector can support keyboard, Y-cable, or PS/2 Mouse.
The pin assignments are as follows:

PIN ASSIGNMENT PIN ASSIGNMENT

1 GND 8 VCC5

2 USB0+ 9 GND

3 USB0- 10 KDAT

4 VCC5 11 MDAT

5 GND 12 V5SB

6 USB1+ 13 KCLK

7 USB1- 14 MCLK

JRJ45

USB23

Orang

e

Green

A4

A1

B4B1

10

11

12

9

1314

1

4

5

8

JPS2USB01

MS

Chapter 2 System Configuration

PA-6970 SERIES USER’S MANUAL

Page: 2-13

2-10. USB CONNECTOR

USB5: Internal USB Connector
The pin assignments are as follows:

PIN ASSIGNMENT

1 USB5­2 USB5+
3 GND
4 5V
5 GND

USB8: Internal USB Connector
The pin assignments are as follows:

PIN ASSIGNMENT

1 USB8­2 USB8+
3 GND
4 5V
5 GND

USB9: Internal USB Connector
The pin assignments are as follows:

PIN ASSIGNMENT

1 USB9­2 USB9+
3 GND
4 5V
5 GND

1 5

USB8

1

5

1 5

Chapter 2 System Configuration

PA-6970 SERIES USER’S MANUAL

Page: 2-14

USB10-1, USB10-2 (Optional): Two USB Connectors
The pin assignments are as follows:

PIN ASSIGNMENT

1 5V
2 USB10­3 USB10+
4 GND

U

SB10-1

41

41

U

SB10-2

Chapter 2 System Configuration

PA-6970 SERIES USER’S MANUAL

Page: 2-15

2-11. CASH DRAWER CONNECTOR

DRW1: Cash Drawer Connector
The pin assignments are as follows:

PIN ASSIGNMENT

1 GND
2 Drawer Open
3 Drawer Sense
4 +12V
5 NC
6 GND

PB-3251 cash drawer control in GPIO port

 To Open Drawer1 (GPIO 7):

Write "0"h to I/O space register "50C"h Bit 7

 To Close Drawer1

Write "1"h to I/O space register "50C"h Bit 7

 Detect Drawer1 Status

Read I/O space register "50C"h (GPIO 6)
Definition (bit4)

Chapter 2 System Configuration

PA-6970 SERIES USER’S MANUAL

Page: 2-16

2-12. CASH DRAWER POWER SELECTION

JP13: Cash Drawer Power Selection
The jumper settings are as follows:

SELECTION JUMPER SETTING JUMPER ILLUSTRATION

+24V 1-2

1

+12V 2-3

1

Note: Manufacturing Default is +24V.