TPC-1570H Touch Panel Computer with High Luminance 15" XGA TFT LCD User Manual
Copyright The documentation and the software included with this product are copyrighted 2010 by Advantech Co., Ltd. All rights are reserved. Advantech Co., Ltd. reserves the right to make improvements in the products described in this manual at any time without notice. No part of this manual may be reproduced, copied, translated or transmitted in any form or by any means without the prior written permission of Advantech Co., Ltd. Information provided in this manual is intended to be accurate and reliable.
Product Warranty (2 years) Advantech warrants to you, the original purchaser, that each of its products will be free from defects in materials and workmanship for two years from the date of purchase. This warranty does not apply to any products which have been repaired or altered by persons other than repair personnel authorized by Advantech, or which have been subject to misuse, abuse, accident or improper installation.
Declaration of Conformity CE This product has passed the CE test for environmental specifications when shielded cables are used for external wiring. We recommend the use of shielded cables. This kind of cable is available from Advantech. Please contact your local supplier for ordering information. FCC Class A Note: 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.
Safety Instructions 1. Read these safety instructions carefully. 2. Keep this User's Manual for later reference. 3. Disconnect this equipment from any AC outlet before cleaning. Use a damp cloth. Do not use liquid or spray detergents for cleaning. 4. For plug-in equipment, the power outlet socket must be located near the equipment and must be easily accessible. 5. Keep this equipment away from humidity. 6. Put this equipment on a reliable surface during installation.
20° C (-4° F) OR ABOVE 60° C (140° F). THIS COULD DAMAGE THE EQUIPMENT. THE EQUIPMENT SHOULD BE IN A CONTROLLED ENVIRONMENT. 16. CAUTION: DANGER OF EXPLOSION IF BATTERY IS INCORRECTLY REPLACED. REPLACE ONLY WITH THE SAME OR EQUIVALENT TYPE RECOMMENDED BY THE MANUFACTURER, DISCARD USED BATTERIES ACCORDING TO THE MANUFACTURER'S INSTRUCTIONS. The sound pressure level at the operator's position according to IEC 7041:1982 is no more than 70 dB (A).
Contents Chapter Chapter 1 General Information ....................................... 2 1.1 1.2 Introduction ....................................................................... 2 Specifications .................................................................... 2 1.3 1.4 1.5 1.6 LCD Specifications ........................................................... 4 Touchscreen Specifications............................................... 5 Power...........................................................
Chapter 5 Windows XP Embedded ............................... 44 5.1 5.2 5.3 EWF ................................................................................ 44 HORM............................................................................. 44 Advantech Utilities.......................................................... 45 5.3.1 5.3.2 5.3.3 Version Information ..................................................... 45 OSLock and OSUnLock .............................................. 45 HORM ........
Figure E.14:Fastening the HDD Module ..................... 80 Figure E.15:Reinstalling the Rear Cover ..................... 81 Appendix F Touchscreen Installation & Configuration. 84 F.1 Driver Installation ........................................................... 84 F.2 Uninstall the Driver......................................................... 86 F.3 Touchscreen Calibration ................................................. 87 Figure F.1:Setup.exe ................................................
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CHAPTER 1 2 General Information Sections include: • Introduction • Specifications
Chapter 1 General Information This chapter gives the background information about the TPC-1570H. 1.1 Introduction The TPC-1570H touch panel computer is state-of-the-art HMI (Human Machine Interface). This 15” display operator interface is an x86-based platform with these key features: Fanless: By using a low power processor, the system does not have to rely on fans, which often are unreliable, and causes dust to circulate inside the equipment.
1.2.2 I/O Ports 1 parallel port: supports EPP/ ECP/SPP modes 3 serial ports: RS-232 (COM1, COM3) and RS-232/422/485 (COM4, default is RS-485) 2 RJ-45 Ethernet port: TPC-1570H-P2AE/C1AE: LAN 1 (10/100BaseT) LAN2 (10/100/1000BaseT) TPC-1570H-B1AE: LAN 1 (10/100BaseT); LAN2 (10/100BaseT) 1 PS/2 port: 6-pin mini-DIN ports for keyboard and mouse 2 USB ports: compliant with USB 2.0 1 Compact Flash Slot 1 PCMCIA slot 3 Audio ports: 1 microphone; 1 Line In and 1 Line Out. 1.2.
1.3 LCD Specifications Display Type TFT color LCD Size (diagonal) 15” Maximum Resolution 1024 x 768 (XGA) Maximum colors 256K Pixel Pitch (W x H) 0.3075 x 0.3075 mm Viewing Angle 120 Luminance (cd / m2) 350 Contrast Ratio 500 Operating Temperature () 0 ~ 50° C (32-122° F ) (Ambient) Backlight 2 CCFL Backlight Life Time 50,000 hours Note There might be several bright or dark pixels on the LCD. This comes from the production of the LCD.
1.4 Touchscreen Specifications Touchscreen Type Resistive Base Glass Construction Tempered Glass Resolution 1024 x 1024 Light Transmission 75% typical Controller RS232 Interface Power Rating 3.3 to 5V Durability 1 million touches 1.5 Power Input voltage: 18 ~ 32 Vdc (the fuse will be open circuit as input level exceeds 33Vdc) Typical: 24V@2.4 (57W) 1.6 I/O Port Arrangement The arrangement of the I/O ports is shown in Figure 1.1. Figure 1.
1.7 Panel Mounting 1. There is a piece of adhesive waterproof gasket on the Mg-AL front bezel. Make sure the waterproof gasket is in position before installing the TPC-1570H to the panel opening. 2. Install the TPC-1570H to the panel opening. 3. Find out the eight clampers and eight long screws in the accessory pack. Hook those clampers to those holes around the four sides of the bezel. Insert the screws to every clamper and fasten them. These screws will then push on the mounting panel and fix the unit. 4.
1.8 Exploded Diagram Figure 1.3: Exploded Diagram 1.9 Dimensions and cutout Weight: 5 Kg (without HDD) Dimensions: 383 x 307 x 64.5 mm (WxHxD) Cutout: 374.5 x 298.
Figure 1.
CHAPTER 2 2 System Setup
Chapter 2 System Setup This chapter provides a brief explanation for operating the TPC-1570H. It is easy to make the TPC-1570H start working with the below step-bystep. Step 1: Unpack the TPC-1570H package. Please check the packing list at the beginning of this manual. Figure 2.1: Unpack the package Step 2: Install a CompactFlash containing windows CE, embedded Windows XP or other operating system.
Figure 2.2: Install CompactFlash memory card Warning It is suggested to turn OFF system power as plug in or pull out the memory card, though the CompactFlash memory is supposed to be hot swappable. Step 3: Connect the power connector to the 24VDC power lines. The power lines can either be of some power adapter or in-house power source.
Figure 2.3: Power connector Figure 2.4: Power receptor and button pin assignments Step 4: Plug the power lines to the system power receptor. Step 5: Push the power button to power on the system as the figure 2.4. Step 6: Calibrate the touchscreen. Please go to “Start”Æ”Programs”Æ”PenMount DMC9000 Utilities”->”Control Panel” as the figure 2.5. Then, click the tab “Calibrate” to calibrate by selecting the standard calibration or advanced calibration.
If your operating system is Windows CE, the details of the procedure are described in following section. Figure 2.5: Touchscreen Calibration - 1 Figure 2.
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CHAPTER 3 2 System Engine
Chapter 3 System Engine Main Board Connector and Jumper Setting List Label Function Description CN1 VGA D-Sub 15-pin (Female) on panel. CN2 DC IN DC Power in Connector (HOUSING 5.08 MM 3P) CN3 PCMCIA One Slot PCMCIA connector CN4 LCD POWER LCD INVERTER Connector CN5 PS2 Standard Mini-DIN 6-pin support K/B and Mouse on panel. CN7 USB Two USB Type-A Female to on panel. CN9 IDE Internal IDE 44pin(2mm) connector CN10 PRT D-Sub 25-pin (Female) on panel.
Figure 3.1: Main Board Connector -1 Figure 3.
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CHAPTER 4 2 Software Configuration Sections include: • Utilities & Drivers • Advantech COM Driver Installation • Watchdog Timer Driver Installation • Dual Display Setting
Chapter 4 Software Configuration A support CD-ROM for TPC-1570H is available and along with the product. There are related utilities and drivers for TPC-1570H included. Please install the Chipset INF driver, VGA graphics driver, LAN driver, audio driver, Advantech.com driver, Touchscreen driver and Watchdog Timer (WDT) driver sequentially. 4.1 Utilities & Drivers The following utilities and drivers are provided for TPC-1570. You can also find the updated utilities and drivers from the support website. 4.
4.1.4 Audio Driver Path: \ audio\ Available for the OS’s below: • Microsoft Windows 98 SE • Microsoft Windows 2000 • Microsoft Windows XP 4.1.5 Advantech COM Driver Path: \ Advantech com \ Available for the OS’s below: • Microsoft Windows 98 SE • Microsoft Windows 2000 • Microsoft Windows XP 4.1.6 Touchscreen Driver Path: \ Pen mount \ Available for the OS’s below: • Microsoft Windows 98 SE • Microsoft Windows 2000 • Microsoft Windows XP 4.1.
4.2 Advantech COM Driver Installation A com port named COM3 or COM4 on TPC-1570 is Advantech Special com port. Please follow the steps below to install the driver. Step 1: Insert the companion CD-ROM into your CD-ROM drive.
Step 2: Use Windows Explorer (or Windows Run command) to execute PCI_ICOM.EXE from the companion CD-ROM. Step 3: Click Next to continue installation.
Step 4: Click Next to continue installation.
Step 5: Click uninstall icon to remove ?PCI Serial Port 25 Chapter 4
Step 6: Click the scan for hardware changes icon to remove ?PCI Serial Port TPC-1570H User Manual 26
27 Chapter 4
Step 7: Found New Hardware and Click Next to continue installation. Step 8: Click Finish the Advantech PCI Serial Port to continue.
Step 9: Then, found New Hardware and Click Next to continue. Step 10: Click Finish the Advantech PCI-1602 Serial SlaveBridge to continue installation.
Step 11: Found New Hardware and Click Next to continue installation.
Step 12: Click Finish the Advantech PCI Serial Port to continue.
4.3 Watchdog Timer (WDT) Driver Installation In order to ensure reliable and fail-safe performance, TPC-1570H has a built-in Watchdog Timer to handle unexpected system failures. TPC1570H provides the drivers and a utility to activate and configure the timer for Windows2000/XP operating systems. The following is a brief introduction, using Windows2000 as an example, for the installation and configuration procedures.
4.3.1 Installing the TPC-1570 Watchdog Timer Driver Step 1: Insert the companion CD-ROM into your CD-ROM drive. Open the directory: \WDT\8362x\W2K_XP. Step 2: Use Windows Explorer (or Windows Run command) to execute SETUP.EXE from the companion CD-ROM.
Step 3: Click Next to proceed.
Step 4: Click Next to confirm the customer information. Step 5: Select Advantech [W83627HF] Watchdog Timer and click Next. .
Step 6: Click Next to confirm selecting the Typical setup type. Step 7: Click Next to proceed.
Step 8: Click Finish to complete the procedure. Step 9: Click OK to restart the system and activate the Watchdog Timer.
4.3.2 How to Use the TPC-1570H Watchdog Timer Step 1: Open the Control Panel and click Watchdog Service Configuration. Step 2: Click the Start Service button.
Step 3: Click Setting to select the setting page. Step 4: Select the Timer Span that meets your application requirement.
Step 5: Click Enable to enable the setting. Step 6: Check the Start watchdog service on boot to enable the Watchdog timer to start automatically after the system boots every time. Step 7: Click OK, then the configuration procedure is finished. Note TPC-1570H User Manual Use Advantech WDT Driver.WDT was enable,and WDT LED was 1Hz glisten.
4.4 Dual Display Setting If you use CRT monitor, you must Connections to CRT port in during system boot up. During system boot up, the system will set CRT parameter. If you have multiple devices, you can set them. Step 1: Click Intel graphic icon from the toolbars Step 2: Select Graphics Options -> Output Device Step 3: This control allows selection of a device page. The currently active is indicated by a checkmark on the icon.
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CHAPTER 2 5 Windows XP Embedded Sections include: • EWF • HORM • Advantech Utilities
Chapter 5 Windows XP Embedded TPC-1570H is in support of embedded windows platform. This section is to state the important features, EWF and HORN, provided in windows XP embedded. 5.1 EWF EWF stands for Enhanced Write Filter. It provides an upper filter in the storage device driver stack that redirects disk write operations to volatile (RAM) or non-volatile (disk) storage. EWF protects a volume from write access. The benefits are as the following. Write-protect one or more partitions on your system.
Enable EWF: Run OSLock, and then system reboot automatically. Open those software that customers want to directly use after system resume from hibernation. Hibernate via Advantech HORM utility: Please Click Start Menu->All Programs->Advantech->HORM HORM environment remains all along unless the following events occur: Run EWF commit command (ewfmgr c: -commit) and then reboot system.
partition including modification on files or registry will be redirected to memory, thus these changes will be discarded in the next system startup. To exit this environment is via OSUnLock. Please visit MSDN website for further information about EWF. 5.3.3 HORM This is to create HORM environment. Please go to Start Menu-> All Programs-> Advantech. This utility firstly dismounts all local physical volumes that are not protected by EWF. It requires users to input the volume list.
A APPENDIX 2 Serial Port Settings
Appendix A Serial Port Settings A.1 COM1/ COM3 Connector Definition 1 5 6 9 Pin Signal 1 NDCD 2 NRX 3 NTX 4 NDTR 5 GND 6 NDSR 7 NRTS 8 NCTS 9 NRI A.2 COM4 Setting The serial port COM4 on the TPC-1570H is adjustable. It can be set to RS-232, RS-422 or RS-485. This port is designed with auto data flow control capability. In other word, the TPC-1570H can automatically detect the data flow direction at this port when the two wired RS-485 communication is activated.
Note: The black square is dip direction.
PIN RS-232 RS-422 RS-485 1 NDCD TX- D- 2 NRX TX+ D+ 3 NTX RX+ 4 NDTR RX- 5 GND GND 6 NDSR 7 NRTS 8 NCTS 9 NRI TPC-1570H User Manual 50 GND
B APPENDIX 2 Watchdog Timer on WinCE 5.
Appendix B Watchdog Timer on WinCE There is a built-in Watchdog timer on Windows CE 5.0 for TPC-1570H. You can access it through WIN32 API. TPC-1570H provides a WDT driver to allow users to enable/disable the Watchdog timer. The driver name is “WDT1:”. Programmers must open this driver before using the resources. Then programmers can use DeviceIOControl functions to enable/disable Watchdog timer. The introduction below includes the DeviceIOControl, the definition of the parameter and an example. B.
control codes can then be advertised, and an application can use these control codes with DeviceIoControl to perform driverspecific functions. lpInBuffer [in] Long pointer to a buffer that contains the data required to perform the operation. This parameter can be NULL if the dwIoControlCode parameter specifies an operation that does not require input data. nInBufferSize [in] Size, in bytes, of the buffer pointed to by lpInBuffer. lpOutBuffer [out] Long pointer to a buffer that receives the operation.
B.2 How to Use the Control Code There are 6 control codes for the operation codes in the WDT driver. IOCTL _WDT_ENABLE: Enables the Watchdog timer on your application. By default, if the Watchdog timer is enabled, the WDT driver will automatically trigger itself after the specified period and your application does not need to trigger the Watchdog timer in this situation. lpInBuffer : unused. nInBufferSize: unused. lpOutBuffer: unused. nOutBufferSize: unused.
IOCTL_WDT_GETTIMEOUT: Gets the Watchdog time setting. lpInBuffer: unused. nInBufferSize: unused. lpOutBuffer: The DWORD pointer to your Watchdog time setting. The Watchdog time setting is just a number. 0 means 2 seconds, 1 means 5 seconds, 2 means 10 seconds, 3 means 15 seconds, 4 means 30 seconds, 5 means 45 seconds and 6 means 60 seconds. The default setting is 5 seconds. nOutBufferSize: unused. IOCTL_WDT_SETTIMEOUT: Sets the Watchdog time setting.
B.
// Set the Watchdog Timer as 10 seconds. Number 2 means 10 seconds. DeviceIoControl(m_hWDT, IOCTL_WDT_SET_TIMEOUT, &nIndex, sizeof(nIndex), NULL, 0, &dwTemp, NULL); // Enable the Watchdog timer DeviceIoControl(m_hWDT, IOCTL_WDT_ENABLE, NULL, 0, NULL, 0, &dwTemp, NULL); While (1) { // do your job here.
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C APPENDIX 2 Watchdog Timer Programming
Appendix C Watchdog Timer Programming C.1 Overview The TPC-1570H cards’ watchdog timer can be used to monitor system software operation and take corrective action if the software fails to function after the programmed period. This section describes the operation of the watchdog timer, and how to program it. The watchdog timer is built into the super I/O controller W83627HF. It provides the following functions for user programming: • Can be enabled and disabled by user's program.
C.2 Watchdog Timer Programming The I/O port address of the watchdog timer is 2E(hex) and 2F(hex), 2E (hex) is the address port. 2F(hex) is the data port. You must first assign the address of register by writing address value into address port 2E(hex), then write/read data to/from the assigned register through data port 2F (hex). Figure C.
Table C.1: Watchdog Timer Registers Address of register (2E) Attribute Description Read/Write Value (2F) and description 87 (hex) ----- Write this address to I/O address port 2E (hex) twice to unlock the W83627HF 07 (hex) write Write 08 (hex) to select register of watchdog timer. 30 (hex) write Write 01 (hex) to enable the function of the watchdog timer. Disabled is set as default. F5 (hex) write Set seconds or minutes as units for the timer. Write 0 to bit 3: set second as counting unit.
C.3 Example Programs 1. Enable watchdog timer and set 10 sec.
Out dx,al Inc dx Mov al,10 Out dx,al ;----------------------------------------------------------Dec dx ; lock W83627HF Mov al,0aah Out dx,al 2.
Out dx,al Inc dx In al,dx Or al,08h Out dx,al ;----------------------------------------------------------Dec dx ; Set timeout interval as 5 minutes and start counting Mov al,0f6h Out dx,al Inc dx Mov al,5 Out dx,al ;----------------------------------------------------------Dec dx ; lock W83627HF Mov al,0aah Out dx,al 3.
Mov al,30h Out dx,al Inc dx Mov al,01h Out dx,al ;----------------------------------------------------------Dec dx ; Enable watchdog timer to be reset by mouse Mov al,0f7h Out dx,al Inc dx In al,dx Or al,80h Out dx,al ;----------------------------------------------------------Dec dx ; lock W83627HF Mov al,0aah Out dx,al 4.
Dec dx ; Enable the function of watchdog timer Mov al,30h Out dx,al Inc dx Mov al,01h Out dx,al ;----------------------------------------------------------Dec dx ; Enable watchdog timer to be strobed reset by keyboard Mov al,0f7h Out dx,al Inc dx In al,dx Or al,40h Out dx,al ;----------------------------------------------------------Dec dx ; lock W83627HF Mov al,0aah Out dx,al 5.
;----------------------------------------------------------Dec dx ; Enable the function of watchdog timer Mov al,30h Out dx,al Inc dx Mov al,01h Out dx,al ;----------------------------------------------------------Dec dx ; Generate a time-out signal Mov al,0f7h Out dx,al ;Write 1 to bit 5 of F7 register Inc dx In al,dx Or al,20h Out dx,al ;----------------------------------------------------------Dec dx ; lock W83627HF Mov al,0aah Out dx,al TPC-1570H Series User Manual 68
APPENDIX D 2 Accessory Kit Assembly This appendix shows how to connect to a CD-ROM via the CompactFlash slot.
Appendix D Accessory Kit Assembly D.1 CompactFlash to IDE Transfer Kit Please follow this assembly procedure to use the CompactFlash slot to connect with a CD-ROM drive. 1. Connect the IDE cable to the adapter board. Figure D.1: Adapter Board and IDE Cable Figure D.
Note 2. Pin 1 is marked red Insert the adapter board into the CompactFlash slot. Figure D.3: CompactFlash Slot Figure D.4: Insert the Adapter Board into the CF slot Figure D.
Connect the CD-ROM to the adapter board via the IDE cable and then connect the external power line to the CD-ROM. Figure D.6: Connect the CD-ROM via the IDE Cable Figure D.7: Plug Power Line into CD-ROM Drive D.2 USB Driver Installation Notice It is required to install the service pack if you want to install the USB 2.0 driver on Windows 2000/XP Note Please make sure Windows 2000 Service Pack 4 is installed before you install the USB 2.0 driver on Windows 2000.
APPENDIX 2 E HDD Kit Assembly
Appendix E HDD Kit Assembly Please follow the assembly procedure to install the HDD into the system. 1. Remove the rear cover. Figure E.1: Removing the Rear Cover 2. De-assemble the HDD kit from the system. Please remove the two screws and take the transparent rubber cushion off.. Figure E.
Figure E.3: Removing the HDD kit 3. . Pull out the HDD kit from the system Figure E.
Figure E.5: The HDD Bracket 4. Put the HDD into the HDD holder. Figure E.
5. Link the HDD with the HDD cable connector and fasten the HDD module with the screws. Figure E.7: Linking the HDD with the Connector 6. Fasten the HDD cover with screws Figure E.
7. Place the HDD kit into the system: Align to the HDD chamfer as shown the below in red circle and then slide the HDD module into the system sideways. Figure E.9: Chamfer Figure E.
Figure E.11: Sliding the HDD Into Position Figure E.
7. Mount the two rubber cushions on the HDD kit and fasten the HDD kit with the system by screws Figure E.13: Mounting the Rubber Cushions Figure E.
8. Place the rear cover back into position. Figure E.15: Reinstalling the Rear Cover Note: SATA HDDs only support data transfer rates of SATA 1 (1.5Gbits/sec), if your HDD is SATA 2 (3.0Gbits/sec) please adjust the jumper to 1.
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APPENDIX 2 F Touchscreen Installation & Configuration This appedix demonstrates how to install the PenMount 9000 touchscreen and set the configuration on TPC1260H. This section uses Windows XP as an example.
Appendix F Touchscreen Installation & Configuration F.1 Driver Installation Please insert the x86 TPC series support CD and go to the Windows 2000-XP driver folder (TPC-1570H\Driver\Touch Screen\Driver\Windows 2000-XP Driver V4.01). Click setup.exe Figure F.1: Setup.exe The screen displays the installation wizard for the PenMount software. Click “Next”. Follow the installation wizard step by step. Figure F.
Figure F.3: Install – License Agreement Figure F.
F.2 Uninstall the Driver Please go to Settings and then select Control Panel. Please click Add/ Remove Programs. Figure F.5: Uninstall -1 Select PenMount DMC9000 and DMC9100. Click Remove button. Figure F.
Select “Yes” to remove the PenMount Windows 2000/SP driver and reboot the system. Figure F.7: Uninstall -3 F.3 Touchscreen Calibration The “PM”, the icon of the PenMount Control Panel, is in the menu bar after the touchscreen installation. Please click the icon “PM” to call PenMount Control Panel. It contains six functions: Calibrate, Draw, Multiple Monitors, Option, and About. Multiple Monitors is for multiple displays only; however TPC-1570H only provides one touchscreen display.
Figure F.8: Standard Calibration -1 Figure F.
Figure F.10: Standard Calibration -3 Note Touch the red squares in sequence. The calibration is completed after the fifth touch red point is calibrated. Press “ESC” to skip. Advanced Calibration is for the aged touchscreens by using 4, 9, 16 or 25 points to calibrate touch panel.
Figure F.11: Advanced Calibration -1 Figure F.
Figure F.13: Plot Calibration Data Note Plot Calibration Data enabled provides the blue lines to show linearity before calibration and black lines to show linearity after calibration when you finished the advanced calibration. Draw This is to test the touch screen operation. Its display shows touch location.
Figure F.14: Draw Click “menu” and then click “clear screen” to clear the drawing. Figure F.
Option This option is to set the operation mode and beep sounds if the beep sound is enabled. The operation mode, stream mode and point mode, is to enable/ disable the mouse’s ability to drag on-screen icons. Stream mode let the mouse functions as normal and dragging on-screen. Point mode is only let the mouse a click function. The dragging on-screen is disabled. Users can turn on / off the beep sound by clicking the “enable beep sound”. Figure F.
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G APPENDIX 2 Fuse Specifications
Appendix G Fuse Specifications G.1 Fuse Specifications Rating: 250VAC, 3.15Amp Size: 5 x 20mm Note The fuse is set to break as the input voltage exceeds 33VDC for your protection. G.2 Fuse Replacement Step 1: Remove the fuse cover Step 2: Replace the damaged fuse with a new one Step 3: Place the fuse cover back in position Figure G.1: Fuse Replacement Warning Do NOT replace the fuse unless it is damaged. Do NOT replace the fuse with a different rating.
