Lx260_chassis_user_guide

Transcript

Chassis User Guide ® Great M inds Think C O M P U T E R S . N E T W O R K S . ® S O L U T I O N S Viglen EMC and the 'CE' mark CE Marking As we begin the 21st century, European standards are being harmonised across borders. If products comply with the same standards in all European countries, product exporting and importing is made simple - paving our way to a common market. If you buy a product with a 'CE' mark on it (shown below), on the box, in the manual, or on the guarantee - it complies with the currently enforced directive(s). Introduction to EMC EMC (Electromagnetic Compatibility) is the term used to describe certain issues with RF (Radio Frequency) energy. Electrical items should be designed so they do not interfere with each other through RF emissions. E.g. If you turn on your microwave, your television shouldn't display interference if both items are CE marked to the EMC directive. If emitted RF energy is not kept low, it can interfere with other electrical circuitry - E.g. Cars Automatic Braking Systems have been known to activate by themselves while in a strong RF field. As this has obvious repercussions ALL electrical products likely to cause RF related problems have to be 'CE' marked from 1st January 1996 onwards. If a product conforms to the EMC directive, not only should its RF emissions be very low, but its immunity to RF energy (and other types) should be high. The apparatus has to resist many 'real world' phenomena such as static shocks and mains voltage transients. Viglen’s Environment laboratory To gain a 'CE' mark, the Viglen computer range has had to undergo many difficult tests to ensure it is Electromagnetically Compatible. These are carried out in the in-house 'Environment lab' at Viglen Headquarters. We have made every effort to guarantee that each computer leaving our factory complies fully with the correct standards. To ensure the computer system maintains compliance throughout its functional life, it is essential you follow these guidelines. Install the system according to Viglen’s instructions If you open up your Viglen System: Keep internal cabling in place as supplied. Ensure the lid is tightly secured afterwards Do not remove drive bay shields unless installing a 'CE' marked peripheral in its place The clips or ‘bumps' around the lips of the case increase conductivity - do not remove or damage. Do not remove any ferrite rings from the L.E.D cables. Only use your Viglen computer with 'CE' marked peripherals This system has been tested in accordance with European standards for use in residential and light industrial areasthis specifies a 10 meter testing radius for emissions and immunity. If you do experience any adverse affects that you think might be related to your computer, try moving it at least 10 meters away from the affected item. If you still experience problems, contact Viglen’s Technical Support department who will put you straight through to an EMC engineer - s/he will do everything possible to help. If modifications are made to your Viglen computer system, it might breach EMC regulations. Viglen take no responsibility (with regards to EMC characteristics) of equipment that has been tampered with or modified. Viglen LX260 Chassis User Guide - MA-LX260-0A-01 1 Copyrights and Trademarks Please note The material in this manual is subject to change without notice. Trademarks Microsoft, Windows, Windows XP, Windows 2000, Windows NT, Windows 95, MS-DOS and OS/2 are registered trademarks of Microsoft Corporation. i386, i486, Xeon, Pentium, Pentium Pro and MMX are registered trademarks of Intel Corporation. JACUP, Contender, Dossier, VIG, Viglen, VigStor and Envy are trademarks of Viglen Limited. Genie and Contender are registered trademarks of Viglen Limited. Copyright and Patents This manual and all accompanying software and documentation are copyrighted and all rights reserved. This product, including software and documentation, may not, in whole or in part, be copied, photocopied, translated or reduced to any electronic or machinereadable form, without prior written consent except for copies retained by the purchaser for backup. © Copyright 2003 Viglen Limited All Rights Reserved Viglen LX260 Server Version 1.0 Printed in the United Kingdom Liability No warranty or representation, either expressed or implied, is made with respect to this documentation, its quality, performance, merchantability or fitness for a particular purpose. As a result the documentation is licensed as is, and you, the licensee, are assuming the entire risk as to its quality and performance. The vendor reserves the right to revise this operation manual and all accompanying software and documentation and to make changes in the content without obligation to notify any person or organisation of the revision or change. In no event will the vendor be liable for direct, indirect, special, incidental or consequential damages arising out of the use or inability to use this product or documentation, even if advised of the possibility of such damages. In particular, the vendor shall not have liability for any hardware, software or data stored or used with the product, including the costs of repairing, replacing or recovering such hardware, software or data. Viglen LX260 Chassis User Guide - MA-LX260-0A-01 2 Contents 1. Chassis Overview 5 Server Checklist 6 Rackmount Conversion Kit 7 2. Chassis Features 8 Chassis Front Controls and Indicators 8 Single 450W Chassis Back I/O Ports and Features 9 2+1 Redundant 600W Chassis Back I/O Ports and Features 10 Chassis Feature Summary 11 3. Chassis Peripherals 12 External Bays for 5.25-inch Removable Media Devices 12 Hot-Swap Bay 12 Hot-Swapping a SCSI SCA Hard Disk Drive 13 SCSI Hot-Swap Backplane Layout and Settings 14 Failure Messages and Indicators 15 Items Detected by Chassis 17 4. Chassis Installation 19 Tools and Supplies Needed 19 Removing and Reinstalling the Side Cover 20 Installing the Side Cover 22 Removing the Front Panel 23 Viglen LX260 Chassis User Guide - MA-LX260-0A-01 3 Installing the Front Panel 24 Converting from the Pedestal Mounted Chassis to Rackmount 25 5. Chassis Power Supply Technical Data 29 6. Appendices 30 Appendix A: Glossary 31 Appendix B: Notes 36 Appendix C: Further help and Information 40 Appendix D: Suggestions 41 Viglen LX260 Chassis User Guide - MA-LX260-0A-01 4 1. Chassis Overview The Viglen LX260 chassis is a server case that is designed for Enterprise server use. The LX260 chassis is designed to be either pedestal or rackmount (See Figure 1). If the LX260 server chassis is configured to be rackmount then you have to purchase an adapter conversion kit. The chassis is equipped with power supplies that meet the latest ATX V2.03 specification. Figure 1: Pedestal and Rackmount Table 1: LX260 Physical Specifications Specification Pedestal Type Height 430 mm 449 mm (Including Stand) Width 220 mm Depth 622 mm Weight 450W - 22.3Kg 600W - 26.92 Kg Rack Type 220 mm 430 mm 620 mm Viglen LX260 Chassis User Guide - MA-LX260-0A-01 5 Server Checklist Check the package before opening. Contact your Viglen Account Manager for any damaged packaging. Table 2: Server Checklist Item Description 1 Chassis Keys 2 6-Bay Server Chassis 3 AC Power Cord 4 Card Holder Guide 5 Twisted Pair Ultra320 SCSI Cable (50cm) 6 Screw Package 1: includes screws and padlock loop 7 User’s Manual 8 Hard Disk extender 9 Screw Package 2: includes screws and hexagon bolts for motherboard 10 Nylon Fastener Quantity 2 1 1 4 1 1 1 2 1 2 Figure 2: Server Checklist Viglen LX260 Chassis User Guide - MA-LX260-0A-01 6 Rackmount Conversion Kit The optional components required to rackmount the LX260 Chassis are shown in Figure 3. Please check the kit before opening and contact the Viglen support team immediately for any damaged packaging. Figure 3: Rackmount Conversion Kit Table 3: Rackmount Conversion Checklist Item Description 1 Mounting Rail 2 Screw Package: includes fourteen round head #6*6 screws and four countersunk head #4*8 screws for Rack Mounted Chassis 3 Rack mounted chassis handles 4 Rack mount chassis handle ear Viglen LX260 Chassis User Guide - MA-LX260-0A-01 Quantity 2 1 2 2 7 2. Chassis Features Chassis Front Controls and indicators Table 4: Chassis Front Controls and Indicators Item Feature Description 1 Power LED Green LED indicator shows the power on/off status of the system. 2 Error LED Red LED indicator shows cooling fan and temperature error. 3 Local HD Access LED Yellow LED indicators show the access status of local hard disks. 4 HD Access LED Yellow LED indicators show the access status of each SCSI hard disks. 5 5.25-inch Bay Three 5.25-inch bays provide space for local hard disk drives, CD-ROM and other drives 6 3.5-inch Bay One 3.5-inch bay provides space for 3.5-inch floppy disk drive 7 Hot-swap Bay Hot-swap bay for 3.5-inch hard disk drives: space for up to six 1inch-high drives. 8 Chassis Stand Can be rotated 90 degree to provide better stabilisation of the enclosure 9 Plastic Door Front panel door. 10 Reset Button Reset button for the motherboard. 11 Power Button Power On/Off button for the system. 12 Door Lock Lock for security. Figure 4: Enclosure Front View Viglen LX260 Chassis User Guide - MA-LX260-0A-01 8 Single 450W Chassis Back I/O Ports and Features Table 5: Single 450W Chassis Back I/O Ports and Features for PS/2 Power Supply Item Feature Description 1 AC Power Inlet AC Power In Connector 2 Power Supply Fan One 8 cm fan for Power Supply and system cooling 3 Silent Button Silent button for the alarm buzzer. 4 Cooling Fan One 12 cm fan for system cooling 5 Padlock Loop On the right side cover, user can use a padlock to prevent unauthorised access to the enclosure 6 I/O Slot Covers Seven I/O slot covers for the chassis 7 Thumb Screws For side cover easily installation without tools. SPS: Switching Power Supply Figure 5: Enclosure Back View with Single 450W Power Supply Viglen LX260 Chassis User Guide - MA-LX260-0A-01 9 2+1 Redundant 600W Chassis Back I/O Ports and Features Table 6: 2+1 Redundant 600W Chassis Back I/O Ports and Features for PS/2 Power Supply Item Feature Description 1 AC Power AC Power In Connector. 2 Redundant Power Supply 600W+300W Hot-swap Redundant Power Supply. 3 PS1 Power on LED PS1 Power on indicator LED, its green light when PS1 works correct, or red light when PS1 fail. 4 Single Power Supply PS1 300W Power Supply module. 5 Single Power Supply PS2 300W Power Supply module. 6 Single Power Supply PS3 300W Power Supply module. 7 I/O Slot Covers Seven I/O slot covers for the chassis. 8 PS3 Power on LED PS3 Power on indicator LED, its green light when PS3 works correct, or red light when PS3 fail. 9 PS2 Power on LED PS2 Power on indicator LED, Its green light when PS2 work correct, or red light when PS2 fail. 10 Silent Button Silent button for the alarm Buzzer. 11 Cooling Fan One 12cm FAN for system cooling. 12 Padlock Loop On the right side cover, user can use a padlock to prevent unauthorised access to the enclosure. 13 Thumb Screws For side cover easily installation without tools. Figure 6: Enclosure Back View with Redundant Power Supply Viglen LX260 Chassis User Guide - MA-LX260-0A-01 10 Chassis Feature Summary The Viglen LX260 is a medium server chassis designed for Enterprise level server use. The chassis is equipped with power supplies that meet the latest SSI-EPS12V guideline. The LX260 galvanised metal chassis minimises EMI and radio frequency interference (RFI). The removable side cover is attached to the chassis with two screws and provides easy access to the server board and power supply. You can secure this cover to the chassis with a padlock. The removable front panel provides access to the 3.5- and 5.25-inch peripheral bays in the front of the chassis. Table 7: Chassis Feature Summary Feature Description Drive Bays One 3.5-inch diskette drive bay, accessible from front. Three 5.25-inch-wide bays that is externally accessible. Design to can convert horizontally when rack mounted. Expansion Slot Covers Server board Hot-Swap Backplane Power Supply Fan module System Cooling Fan Chassis Intrusion Switch Six Hot-swap bays for 3.5-inch hard disk drives: space for up to 1-inch-high drives. Up to seven expansions slots can be used: every slot opening that does not have an add-In board Installed must have a slot cover installed. ATX2.03 specification. 12×13 inches, ATX I/O. Hot-Swap Backplane board BP-5061 is a mini RAID storage that provides a stable and safe environment for disk array systems. 600W+300W Redundant or 450W EPS12V power supply, integrated cooling fan. Two 8 cm ball bearing cooling fans for Hot-Swap H.D.D bay cooling. One 12 cm ball bearing cooling fan for system cooling. The chassis provides a micro toggle switch; It is a two wire switch that can be connected to the motherboard or the BP-5061 (J5 INS) for the chassis intrusion detection. Viglen LX260 Chassis User Guide - MA-LX260-0A-01 11 3. Chassis Peripherals External Bays for 5.25-inch Removable Media Devices The chassis has three 5.25-inch half-height bays that are accessible from the front of the system. These bays are intended to provide space for tape backup or other removable devices. Hot-Swap Bay A hot-swap bay is provided for drives that are 3.5 inches wide and 1 inch high. Drives can consume up to 25 watts of power. Drives must be specified to run under a maximum ambient temperature of 50 °C. The system was designed to allow the user to install a Redundant Array of Inexpensive Disks (RAID). A software implementation with onboard SCSI or an add-in RAID controller card can be used to set up RAID applications. Figure 7: Hot Swap Bays Viglen LX260 Chassis User Guide - MA-LX260-0A-01 12 Hot-Swapping a SCSI SCA Hard Disk Drive A bank of 6 yellow LEDs on the front panel monitors the drive status of each drive in the hot-swap bay. When a yellow LED is on continuously, it is okay to hot-swap (replace) a bad drive with a good one. You do not need to shut the system down to hot-swap a drive. 1. Open the plastic front door of the system. 2. Check the bank of yellow LEDs on the front panel to determine which drive is bad. Grasp the plastic drive carrier, squeeze the tab on the carrier, and carefully slide the bad drive out of the bay (See Figure 7). Place the drive on an anti-static surface. 3. Position the new plastic carrier and drive assembly so that it engages the bay guide rails. 4. Gently push the drive into the bay until it docks with the backplane connector and snaps into place. 5. Close the plastic front door. Viglen LX260 Chassis User Guide - MA-LX260-0A-01 13 SCSI Hot-Swap Backplane Layout and Setting The Viglen LX260 comes as standard with an Ultra320 Hot-Swap disk array backplane. Figure 8: U320 Hot-Swap Backplane Viglen LX260 Chassis User Guide - MA-LX260-0A-01 14 Table 8: Hot-Swap Backplane Summary Item Description SCSI IN Connect twisted pair SCSI cable to RAID controller or SCSI card U3 IW-BP-5061 Firmware U5 Reserve U6~U8 Ultra160M/320M LVD/SE terminators. RT1~RT3 Temperature detector. F1 External Fan1 (Connect 8 cm FAN) F2 External Fan2 (Connect 8 cm FAN) F3 External Fan3 (Connect 12 cm FAN) F4 External Fan4 (Connect power supply, cooling fan or failure signal.) J6 External buzzer silent button (Connect pushbutton switch) J5 External Intrusion switch (Connect micro switch) J7 Internal hardware communication interface J9~J11 IW-BP-5061 Power input (Connect Power Supply DC output) BZ1 Buzzer, it will be alarm when the failure was detected by U3 SCA0~SCA5 Connector SCA hard disk drive 0~5 DP1 Failure indicated by 7-segment display PIN2 A Communication interface between system and EMC Board PIN3 External LED display (Connect LED Panel PCB from front of the chassis) SW2 Buzzer silent button SW1 , SW3~SW5, Set SCA hard disk drive 0~5 ID code SW7, SW8 SW6 Function Setting Failure Messages and Indications Intrusion Detection When the intrusion signal was detected the audible alarm should be continuous "Bi-" Sound, A7-segment display will show the intrusion failure (Please refer 7-Segment Display) and Error LED on the front panel should flash. (If the connector of the intrusion switch was not connected to J5 then should be set the SW6 No.1 to ‘ON’ position to disable the intrusion function). FAN1 Failure When the FAN1 was detected failure the audible alarm should be continuous "Bi-" sound, A7-segment display will show the FAN1 failure (Please refer 7-Segment Display) and Error LED on the front panel should flash. FAN2 Failure When the FAN2 was detected failure the audible alarm should be continuous "Bi-" sound, A7-segment display will show the FAN2 failure and Error LED on the front panel should flash. Viglen LX260 Chassis User Guide - MA-LX260-0A-01 15 FAN3 Failure When the FAN3 was detected failure the audible alarm should be continuous "Bi-" sound A7-segment display will show the FAN3 failure (Please refer 7-Segment Display) and Error LED on the front panel should flash. Redundant Power Supply failure signal When the Power Supply failure signal (FAN4) was detected, the audible alarm should be continuous "Bi-" sound, A7-segment display will show the Power Supply (FAN4) failure (Please refer 7-Segment Display) and Error LED on the front panel should flash. Voltage failure (+12V and +5V) When the Voltage over then ±10%, the audible alarm should be continuous "Bi-" sound, A7-segment display will show the voltage was not stable (Please refer 7-Segment Display) and Error LED on the front panel should flash. Hot-Swap Bay temperature (Temp1~Temp3) When Hot-Swap Bay temperature was exceeded 50 or 60 Celsius degree the audible alarm should be continuous "Bi-" sound, A7-segment display will show the temperature was over heat (Please refer 7-Segment D0i1splay) and Error LED on the front panel should flash. Buzzer Silent Button When the fail signal was detected, the audible alarm will active, press the button alarm should stop and it'll recover audible when you press the button again. 7-Segement Display Table 9: Hot-Swap Backplane LED Warning Messages 1 = FAN1 Failure 2 = FAN2 Failure 4 = PSU Fan Failure 9 = Temperature 1 Failure A = Temperature2 Failure B = Temperature3 Failure D = +12V Voltage Failure E = Intrusion Failure 3 = FAN3 Failure C = +5V Voltage Failure Viglen LX260 Chassis User Guide - MA-LX260-0A-01 16 SW6 Description Table 10: SW6 Description SW6 Function Setting No. 1 ON OFF No. 2 ON OFF No. 3 Reserved No. 4 ON OFF Description Disable the intrusion detect function Enable the intrusion detect function The low speed mode for fan detect The h speed mode for fan detect Default setting at OFF The safe temperature is less than 50°C The safe temperature is less than 60°C Table 11: Setting Detect Function Function Intrusion (No. 1) SW6 OFF
Disabled ON
Enabled R.P.M Speed (No. 2) OFF
Hi Speed ON
Low Speed Temperature (No. 4) OFF
60°C ON
50°C Items Detected by Chassis Figure 9: Chassis Fans and Chassis Intrusion Viglen LX260 Chassis User Guide - MA-LX260-0A-01 17 Figure 10: Chassis 2+1 Redundant Module Fans and Buzzer Silent Button Figure 11: Chassis Single PSU Fan and Buzzer Silent Button Viglen LX260 Chassis User Guide - MA-LX260-0A-01 18 4. Chassis Installation Tools and Supplies Needed • Phillips (cross-head) screwdriver (#2 bit) • Antistatic wrist strap (recommended) Safety Warning! Before You Remove the Side Cover Before removing the system side covers to work inside the system, observe these safety guidelines. 1. Turn off all peripheral devices connected to the system. 2. Turn off the system by using the push-button on/off power switch on the front of the system. Then unplug the AC power cord from the system or wall outlet. 3. Label and disconnect all peripheral cables and all telecommunication lines connected to I/O connectors or ports on the back of the system. 4. Provide some electrostatic discharge (ESD) protection by wearing an antistatic wrist strap attached to chassis ground of the system -- any unpainted metal surface -when handling components. Viglen LX260 Chassis User Guide - MA-LX260-0A-01 19 Warning and Cautions! These warnings and cautions apply whenever you remove the side cover of the system to access components inside the system. Only a technically qualified person should integrate and configure the system. Warning! System power on/off: The on/off button (a convex button) on the front panel DOES NOT turn off the system AC power. To remove power from system, you must unplug the AC power cord from the wall outlet or the system. Hazardous conditions, power supply: Hazardous voltage, current, and energy levels are present inside the power supply. There are no user serviceable parts inside it; servicing should be done by technically qualified personnel. Hazardous conditions, devices and cables: Hazardous electrical conditions may be present on power, telephone, and communication cables. Turn off the system and disconnect the power cords, telecommunications systems, networks, and modems attached to the system before opening it. Otherwise, personal injury or equipment damage can result. Cautions! Electrostatic discharge (ESD) and ESD protection: ESD can damage disk drives, boards, and other parts. We recommend that you perform all procedures in this chapter only at an ESD workstation. If one is not available, provide some ESD protection by wearing an antistatic wrist strap attached to chassis ground --- any unpainted metal surface --- on your system when handling parts. ESD and handling boards: Always handle boards carefully. They can be extremely sensitive to ESD. Hold boards only by their edges. After removing a board from its protective wrapper or from the system, place it component-side up on a grounded, static-free surface. If you place the server board on a conductive surface, the battery leads may short out. If they do, this will result in a loss of CMOS data and will drain the battery. Use a conductive foam pad if available but not the board wrapper. Do not slide board over any surface. Cooling and airflow: For proper cooling and airflow, always install the chassis side cover before turning on the system. Operating it without the cover in place can damage system parts. Viglen LX260 Chassis User Guide - MA-LX260-0A-01 20 Removing and Reinstalling the Side Cover Removing the Side Covers Turn off all peripheral devices connected to the system. Turn off the system by using the power on/off switch on the front panel, and unplug the AC power cord. Label and disconnect all peripheral cables attached to the I/O panel on the back of the system. If there is a padlock installed on the back of the system, unlock and remove it. Remove and save the four thumb screws from the side cover; you will need them later to reattach the cover. Figure 12: Step 1 - Removing the Thumb Screws Slide the side cover backwards and remove the side cover by pulling away from case. Viglen LX260 Chassis User Guide - MA-LX260-0A-01 21 Figure 13: Step 2 - Slide the side door backwards Figure 13: Step 3 - Finally lift off side panel Installing the Side Cover Before replacing a side cover, check that you have not left loose tools or parts inside the system. Check that cables, add-in boards, and other components are properly installed. Position the cover over the case and align the top row of tabs with the top slot of the case. Slide the cover toward the front of the case. Viglen LX260 Chassis User Guide - MA-LX260-0A-01 22 Tighten the thumb screws. User may insert a padlock through the metal protruding through the back of the side cover to prevent unauthorised access to the system. Connect all external cables and the power cord to the system. Removing the Front Panel Before removing the Front Panel, you need to remove the side covers. It is not necessary to remove the front panel for installation. For user’s convenience, the front panel can be removed by pushing the clips on the both sides sequentially from the top to the bottom and pulling away from the case. There are no screws for the panel. Figure 14: Removing the Front Panel Viglen LX260 Chassis User Guide - MA-LX260-0A-01 23 Installing the Front Panel When reinstall the panel, align the top of the panel to the case top and snap the bottom of the panel into place. Figure 15: Installing the Front Panel Viglen LX260 Chassis User Guide - MA-LX260-0A-01 24 Converting from the Pedestal Mounted Chassis to Rackmount Step 1: Using the two countersunk head screws, install the handles to each mounting ear. Figure 16: Installing the Front Handles Step 2: Release the slide rail by pushing up the plastic latch and pull it out. Figure 17: Releasing the Side Rail Step 3: Place the chassis horizontally. Figure 18: Place the Chassis Horizontally Viglen LX260 Chassis User Guide - MA-LX260-0A-01 25 Step 4: Remove the plastic top cover screw and take it off. Figure 19: Removing the Plastic Cover Step 5: Press the two tabs of the chassis stand and take it off. Figure 20: Removing the Plastic Feet Viglen LX260 Chassis User Guide - MA-LX260-0A-01 26 Step 6: Using four round head #4*6 screws install the handle modules to both sides of the rack mounted chassis. Figure 21: Installing the Handle modules Step 7: Using the five round head #4*6 screws fix the internal rail slide to both sides of the chassis. Figure 22: Installing the Rail to the Chassis Viglen LX260 Chassis User Guide - MA-LX260-0A-01 27 Step 8: Using the round head #4*6 screws fix the mounting rail to the Rack. Figure 23: Installing the Mounting Rail to the Rack Cabinet Viglen LX260 Chassis User Guide - MA-LX260-0A-01 28 5. Chassis Power Supply Technical Data Table 12: Power Supply Specification Input Voltage Range Frequency Range Max. input AC Current +3.3V (MAX Load) +5V (Max Load) +12V V1 (MAX Load) +12V V2 (MAX Load) -12V (MAX Load) -5V (MAX Load) +5Vsb (MAX Load) Caution 450W 90~140Vrms or 180~264Vrms 47Hz~63Hz 8.5A Max @ 110Vac/60Hz 4A Max @ 220Vac/50Hz 24A 20A 15A 15A 0.5A 2.0A +5V and 3.3V total output 600W+300W Redundant 90~132Vrms or 180~264Vrms 47Hz~63Hz 12A Max @ 115Vac/60Hz 6A Max @ 230Vac/50Hz 40A 50A 34A 1A 0.5A 2A +5V and 3.3V total output Viglen LX260 Chassis User Guide - MA-LX260-0A-01 29 6. Appendices Appendix A: Glossary A Ampere, This is a term of measurement for electric current. AC Alternating Current used to describe the mains voltage. Ampere This is a term of measurement of electric current. Analog Pertaining to data in the form of continuously variable quantities. Contrasts with Digital. ANSI American National Standards Institute. ASCII American Standard Coded for Information Interchange. This is a special 7/8 bit code that is given to identify characters. Asynchronous A method of transmission of data in which the bits included in a character or block of characters occur during a specific time interval. The start of each character block can occur at any time during this interval. Contrasts with synchronous. AUTOEXEC.BAT A special batch file, which contains a series of commands that are to be executed when the computer is started up. BASIC Beginner’s All-purpose Symbolic Instruction Code. This is a simple programming language. Battery-Backed RAM A type of memory that holds information even when the computer is switched off. Baud A term used to measure modem data rates. Binary Involving a choice of two conditions, such as "yes" or "no", "1" or "0", base-2 mathematics. BIOS Basic Input Output System. This is the program held in the computer's ROM which handles all the input and output functions. Viglen LX260 Chassis User Guide - MA-LX260-0A-01 30 Bit Synonym for Binary digit. A single unit of information which can hold a value of 0 or 1. Boot The name given to the program that runs on the computer when it is first switched on. Can also be a verb related to running the program. BSI British Standards Institute. Bps Bits per second. Buffer An area of temporary storage. Bus One or more conductors used for transmitting signals. Byte A unit of data made up of eight Bits. C / C++ A programming language. Cache A small area of high-speed memory. Cathode Ray Tube (CRT) Normally referred to as a monitor or VDU. Character A symbol on the screen or same as a Byte. CMOS Complementary Metal Oxide Semiconductor. A logic circuit family that uses very little power. COM1, COM2 COM3, COM4 The names given to the serial communications ports in DOS. CONFIG.SYS A special purpose file which has the configuration details for the computer to set itself to when powered up. CPS Characters per second. CSA Canadian Standards Association. Cursor A bar on the screen that indicates where the input from the keyboard will be displayed. DC Direct current. Normally associated with battery current. Viglen LX260 Chassis User Guide - MA-LX260-0A-01 31 Digital Pertaining to data in the form of binary digits. Contrasts with Analogue. DIN DIP Deutsche Industrie Norm, specifies major connector types. Dual In-Line Package. ICs that have two parallel rows of connections. DMA Direct Memory Access. A method of transferring data between main storage and I/O devices without processor intervention. Disk See Floppy Disk. DOS or MS-DOS® Disk Operating System or Microsoft Disk Operating System. This is a low-level program that instructs the computer on basic file handling.# DRAM Dynamic RAM. A type of RAM that requires a periodic refresh to maintain data. DVD Digital Versatile Disk EMC ElectroMagnetic Compatibility EMI ElectroMagnetic Interference. EPROM Erasable Programmable Read-Only Memory. ESDI Enhanced Small Device Interface, which specifies a fast hard disk interface. FCC Federal Communications Commission. Firmware A program that is resident in Read Only Memory (ROM). Floppy Disk A storage device consisting of a flexible magnetic disk inside a protective cover. G A symbol used to represent the prefix Giga. i.e. GB (Giga Byte). GB Gigabyte, represents 1,073,741,824 bytes (1024MB). Hard Disk A disk of rigid magnetic material used for mass storage. Viglen LX260 Chassis User Guide - MA-LX260-0A-01 32 Hardware The physical equipment which makes up the computer system. Hertz (Hz) A unit of measurement of frequency amounting to one cycle per second. Hex Hexadecimal. Base-16 mathematics. IC Integrated Circuit. Icon A graphical symbol. IDE Integrated device interface. An AT bus specification for a fast hard disk. IEC International Electrotechnical Commission. Specifies standards of safety. I/O Input/Output. Refers to data being sent to or received from a computer. K Symbol used to represent Kilobyte which is 1024 bytes. KB Abbreviation for Kilobyte, i.e. 1024 bytes. Kb Abbreviation for Kilo bit, i.e. 1024 bits. Keylock A locking device which can deactivate a keyboard. KHz KiloHertz. 1000 Hertz. LIM Lotus/Intel/ Microsoft Expanded Memory Manager specification. LED Light Emitting Diode. These are normally used as the lights on a computers front panel. LPT1, LPT2, LPT3 Names given to the printer ports by DOS. M Prefix mega. Equivalent to 1024K. mA Milliampere. 0.001 Ampere. MB Abbreviation for Mega Byte i.e. 1024K Bytes. Viglen LX260 Chassis User Guide - MA-LX260-0A-01 33 Mb Abbreviation for Mega Bits, i.e. 1024K bits. Memory An electronic component which remembers data stored in it. MHz Mega Hertz. 1,000,000 Hertz. ns Nano Second 0.000 000 001 second. Pixel The smallest displayable unit on a monitor or picture tube. POST Power-On Self Test. RAM Random Access Memory. Fast Read/Write memory. RFI Radio Frequency Interface. ROM Read Only Memory. RS-232C A standard for asynchronous serial communication. SCSI Small Computer Systems Interface. A multimedia bus and interface specification for fast Hard Disks, Tape Backup Units, CD ROMs and other Devices. SIMM Single In-Line Memory Module. Software Another name for a computer program. SRAM Static RAM. Synchronous Transmission of data between devices which are maintaining the same frequency relationship. Contrasts with asynchronous. TPI Tracks Per Inch. TTL Transistor Transistor Logic. TUV Technischer Uberwachungs-Verein. Organisation which tests and certifies electronic equipment. UL Underwriter Laboratories. American Organisation specifying standards for safety of electronic equipment. USB Universal Serial Bus V Volt. Unit of measurement of potential difference. Viglen LX260 Chassis User Guide - MA-LX260-0A-01 34 VAC Volts (Alternating Current). VDE Verband Deutscher Electrotechniker. German organisation specifying EMI suppression. Video Computer data or graphics displayed on a monitor or screen. W Watt. Watt Basic unit of measurement of electrical power. Word A number of bits or bytes making up an entity used in the transfer and calculation of data in the computer architecture. Word=16 bits (2 bytes), long word= 32bits (4 bytes). Viglen LX260 Chassis User Guide - MA-LX260-0A-01 35 Appendix B: Notes Viglen LX260 Chassis User Guide - MA-LX260-0A-01 36 Viglen LX260 Chassis User Guide - MA-LX260-0A-01 37 Viglen LX260 Chassis User Guide - MA-LX260-0A-01 38 Viglen LX260 Chassis User Guide - MA-LX260-0A-01 39 Appendix C: Further help and Information Viglen Technical Support Tel: 020 8758 7050 Fax: 020 8758 7097 E-mail: [email protected] Viglen's Internet Website http://www.viglen.co.uk The Viglen BBS service 020 8758 7095 Viglen Service Centre Tel: 020 8991 3582 Fax: 020 8758 7085, E-mail: [email protected] Account Sales: Call the department appropriate to your business sector. Education: Tel: 020 8758 7170 Fax: 020 8566 7105 E-mail: [email protected] Schools: Tel: 020 8758 7027 Fax: 020 8758 7417 E-mail: [email protected] Corporate: Tel: 020 8758 7172 Fax: 020 8566 8930 E-mail: [email protected] Public Sector: Tel: 020 8758 7079 Fax: 020 8566 8931 E-mail: [email protected] Viglen LX260 Chassis User Guide - MA-LX260-0A-01 40 Appendix D: Suggestions Viglen is interested in continuing to improve the quality and information provided in their manuals. Viglen has listed some questions that you may like to answer and return to Viglen. This will help Viglen help to keep and improve the standard of their manuals. 1. Is the information provided in this and other manuals clear enough? 2. What could be added to the manual to improve it? 3. Does the manual go into enough detail? 4. Would you like an on-line version of this manual? 5. How do you rate the Viglen Technical support and Service Departments? Viglen LX260 Chassis User Guide - MA-LX260-0A-01 41 6. Are there any technological improvements that could be made to the system? 1. Other points you would like to mention? Please return this slip to: Product Development Department Viglen Ltd Viglen House Alperton Lane Alperton Middlesex HA0 1DX Viglen LX260 Chassis User Guide - MA-LX260-0A-01 42