Intel LH500 manual

1 LH500 USER MANUAL Arima Computer Corp. Building Your Competitive Advantage[...]

2 TABLE OF CONTENTS: LEGAL DISCLAIMER... ............. .............. ............. ... ............. ............. .............. ............. . 4 COPYRIGHT NO TI CE ............. ............. ............. .............. .......... ... ... ............. ............. .... 4 TECHNICAL SUPP ORT ............. .............. ............. .........[...]

3 3.2 U SING S ETUP ... ............. ........... ............. .............. ............. ............. .............. ............ 46 3.3 T ROUBLESHOOTING ...... .............. ............. ............. .............. ............. ............. .......... 47 3.4 M AIN M ENU : ........... ............. ........... ............. ..............[...]

4 Legal Disclaimer The information provided in this document is subject to change without notice. Arima Computer Corp. m akes no warranty regarding this document. Always read the safety instructio ns carefully. Arima Computer Corp. cannot anticipate all of your working con ditions; for safety, you should use caution, care and good judgment when f o[...]

5 Technical Support If a problem arises with you r system during installation or operation and is un able to be resolved from the user manual, consult the following list of resources f or help:  Contact the place of purchase for help. This is th e recommended solution as they can provide the quickest assistance.  Visit Arima Computer Corp. we[...]

6 Safety Instruc tion  Keep this manual for f uture reference.  Keep the equipments in a safe, cool, dry p lace.  Perform the installation on a dry, flat surface.  Ground yourself by touching a plugged-in power supply, which displaces static elect ricity.  Adjust the power source to the proper voltage befo re connecting the equipment[...]

7 Chapter 1. Getting Started 1.1 Congrat ulations You have in possession one of the m ost powerful and versatile Dual Intel Xeon processor solutions, t he LH500. Powered by cutting edge Intel 7520 (MCH) chipset, LH500 efficiently utilizes the combined strength of 800MHz front side bus, PCI Express X8 and integrated SATA-II controller, to name just [...]

8 1.2.1 Quick Installati on Guide CN8 PCI-X Slot 1 Speed Select Jumper Open Short 133 MHz Enabled (def ault ) 100 MHz Enabled CN29 COM2 Header CN52 LED Board CN7 PCI-X Slot 2 Speed Select Jumper Open Short 133 MHz Enabled (def ault ) 100 MHz Enabled CN9 PCI-X Slot 5 Speed Select Jumper 1-2 2- 3 133 MHz Enabled (def ault ) 100 MHz Enabled CN23 CN57 [...]

9 1.3 Feat ures Highlight CPU:  Supports high productivity Dual and Single Intel Xeon processors configuration  LH500 does not support Prestonia 533MHz CHIPSET:  Runs state of the art Intel 7520 Chipset SYSTEM MEMORY:  Six 184-pin DDR 333 memory slots for 12GB of RAM EXPANSION SLOTS:  Supports both PCI-Express X8 and PCI-Express X4 a[...]

10 1.4 Motherboard Specificatio n Processors  Dual m PG604 ZIF socket  Dual onboard 4-phase VRD (VRM 10.1 Spec.)  Supports one or two Intel Xeon processors with 1MB of integrated L2 cache  Suppor ts 800 MHz F ront S ide Bus  LH500 does not support Prestonia 533MHz Chipsets  Intel 7520 (MCH) chipset  MCH + ICH5 + PXH + PXH +FWH [...]

11  Intel 82546GB Anvik2 dual channel Gigabit Ethernet Controller  Two RJ-45 connectors with LEDs  PXE option ROM solution  Two 4-pin headers for front panel LED output Integrated Graphics Controller  ATI RAGE XL PCI graphics controller  8MB Frame Buff er of video memory ICH5 USB 2.0  Four USB 2.0 ports (2 rear panel co nnector[...]

12 1.5 Motherboard Layout [major components] The following diagram indicates all the major components of the motherboard. Alternative use of PCI-X Slot 2: For the LH500-V model, PCI-X Slot 2 ca n be used for 1U/2U riser card and Adaptec ZCR (zero channel RAID) card. For the LH500-F model, PCI-X Slot 2 can be used for Adaptec ZCR card.[...]

13 1.6 Hardware Mo nitor Two kinds of hardware monitoring are provided with the motherboard. An ADM 1026 chip is u sed to provide dedicated monitoring of voltages, temp eratures and fan RPM. Specifically, it monitors CN30 and CN48’s vol tages, CPU1 and CPU2’s temperatures, and fi nally, CN36 and CN39’s RPM. A Super I/O chip provides fan RPM m[...]

14 Chapter 2. Hardw are Installation 2.1 Mounting the motherboard !INSTALLATION WARNING! Use Caution When Installing the ServerBoard into the System Chassis The components underneath the PS/2 Mouse/ Keyboard connectors around the mounting hole are very FRAGILE and can be knocked off of their sold ered positions, resulting in IRREPARABLE DAMAGE duri[...]

15 2.2 Installing the proce ssor LH500 operates best when dual Intel Xeo n processors are in use. When using only one processor, install it in CPU_1 socket. We discourage you from installing in th e CPU_2 socket if you have only one processor to install. The result m ay be unpredictable. Procedure: First read the instructions that comes wi th the C[...]

16 A good quality backplate shoul d have tape over some parts of it that prevents electrical damage. When ever possible, use high quality backplates to prolong the life of yo ur motherboard. 2. Lift up the lever and locate the trian gle marking on the CPU and CPU sock et. Refer to the following picture.[...]

17 3. Place the CPU wit h the correct orientation (B) as shown in the f ollowing pictures. The lever is sti ll up and the two triangl es are in the same co rner. The CPU will not f it if the orientation is wrong. Do no t try to force the CPU into the socket; i t could result in irreparable damage to the CPU.[...]

18 4. Lower the socket locking lever in place. 5. Now, rest the mo therboard into the chassis, align the four h oles of the backplate with the fou r bolts of the chassis. We do not recommend you to apply thermal grease at this poi nt of the installation. The heatsink provided a lready has thermal grease on the bottom for your convenience. Do not ap[...]

19 6. Mount the CPU heatsink to t he top of the CPU and socket. Align the screws of the h eatsink with the four holes of the backplate and th e chassis bolts, then fasten them secu rely. Repeat the steps for the i nstallation of another CPU. Heatsink not included in t he package.[...]

20 2.3 Installing the memory 2.3.1 DIMM combination The following diagram indicates the locations of memory sockets, captioned 1 st _Pai r_A th roug h 3 rd _Pair_B. Types of memory supported: Six sockets of 184-pin 2.5Volt DDR DIMM supporting DDR-333/ 266. As indicated on the diagram, they are runni ng on dual channel memory bus and two-way interle[...]

21 DDR memory types are determ ined by two factors: speed and rank. LH500 supports DDR 33 3/266 speed in both single/dual rank. The rank of your memory could impact the effectiven ess of the motherboard. Table 1 indicates the setup that LH500 h as been tested on. The number of mem ory chips and how they are stacked on a mem ory module do not indica[...]

22 2.3.2 Installing DIMM modules 1. Open up the brackets: 2. Line up the memory w ith socket. Make sure the gap fits into the so cket.[...]

23 3. Push in the m emory stick until bracket can be closed sec urely onto the stick. Make su re the brackets hold o nto th e memor y modu le. These pictures only show one m emory stick but remember to install them in pairs .[...]

24 2.4 Jumpers Configuration 2.4.1 Clear CMOS header Header CN19 controls CMOS setting. Posit ion your motherboard as it appears in the following diagram . Pin 1 is on the side of PCI slots, whereas pin 3 is on the side of the power supply connectors. To clear CMOS: 1. Turn off the system. 2. Short pin 2and pin 3 using a jumper for a few seconds. 3[...]

25 2.4.2 Enable onboard VGA heade r Header CN25 controls the onboard VGA setting. When CN25 is open, no jumper, VGA is enabled. When CN2 5 is on, VGA is disabled. Ref er to the following diagram for CN25 location:[...]

26 2.4.3 PCI-X Slot 1 Jumper Setting: Header CN8 controls PCI-X Slot 1 sett ing. When CN8 is open, slot 1 is set to 133 MHz. When CN8 is on, slot 1 is set to 100MHz. The frequencies describe here are m aximum operating frequencies. If PCI-X channel is shared with other devi ces, then maximum operating frequency cannot be ach ieved. Refer to the fol[...]

27 2.4.4 PCI-X Slot 2 Jumper: Header CN7 controls PCI-X Slot 2 sett ing. When CN7 is open, no jum per, slot 2 is set to 133MHz. W hen CN7 is on, slot 2 is set to 1 00MHz. The frequencies describe here are m aximum operating frequencies. If PCI-X channel is shared with other devi ces, then maximum operating frequency cannot be achieved . Refer to th[...]

28 2.4.5 PCI-X Slot 5 Jumper: Header CN9 controls PCI-X Slot 5 sett ing. When CN9 is open, no jum per, slot 5 is set to 133MHz. W hen CN9 is on, slot 5 is set to 1 00MHz. The frequencies describe here are m aximum operating frequencies. If PCI-X channel is shared with other devi ces, then maximum operating frequency cannot be achieved . Refer to th[...]

29 2.4.6 LAN 82546GB Header CN49 controls the LAN 82546GB activation. W hen CN49 is open, no jumper, LAN 82546GB is enabled. When CN49 is on, LAN825 46GB is disabled. Refer to the f ollowing diagram for the location of CN49.[...]

30 2.5 Power Supply 2.5.1 ATX 24-pin power connector There are two 24 pin power con nectors on the motherboard. Only one is needed to make the motherboard operational. The redundan cy is built-in for your convenience; you may choose either one to hook up depending on the layout of your system chassis. The 24-pin connector provides power to th e mot[...]

31 Make sure the AC adapter is not plugged into th e wall outlet during installation. The electric current co uld damage the motherboard.[...]

32 2.5.2 ATX 8-pin power conne ctor The 8-pin connector provides d edicated power to the CPU. Refer to the following diagram for its location and configuration.[...]

33 2.6 Cables & Connectors 2.6.1 Floppy disk drive connector The following diagram indicates the location of the floppy drive connector: To install the floppy drive, first ref er to the instructions that come with th e floppy drive. Then consult the instructions here. Attaching a floppy drive can be done i n a similar manner to an IDE drive. Mo[...]

34 Diagnosing an incorrectly installed f loppy drive Drive is not automatically detected. Usually caused by faulty cables, cables put i n backwards or a bad floppy drive or m otherboard. Try another floppy drive to verif y the problem if the cable is properly installed o r try replacing the actual cable. Also ch eck to see if the onboard floppy con[...]

35 2.6.2 IDE connectors The following diagram indicates the location of the IDE connectors: As always, read the in structions that come with the IDE drive an d then consult the instructions here. For Parallel ATA, installing IDE drives has become simpler over the years. The cabl es are now “keyed” to guide the user to the correct install ation [...]

36 2.6.3 Front Panel Connectors You can find the pin num ber on the corner of the pin block. Pi n 2 is located closer to the outer edge of the motherboard than pin 1. Pin 34 is closer to the outer edge of the motherboard than pin 33. The red + indicates the an ode, or the +5V. The opposite pin, then, i ndicates the cathode or the ground.[...]

37 Power LED: This 3-pin connector attaches to the pow er LED. HDD Act ivit y LED : This 2-pin connector attaches to the LED of the hard disk. The LED lights up when HDD is active. Power Switch: This 2-pin connector attaches to the pow er button of the system. Reset S witch: This 2-pin connector attaches to the case-m ounted reset switch for reboot[...]

38 2.6.4 Rear Pa nel I/O ports The following illustration displays the motherboard I/O po rt array. Type of Port Function PS/2 Mouse connector The system will direct IRQ12 to the PS/2 mouse if one is detected. If not detected, IRQ12 can be used for expansion slot. PS/2 Keyboard connector This connection is for a standard keyboard using a PS/2 plug [...]

39 2.6.5 Back Pa nel LAN LED Back P anel L AN LED: header CN52 and CN53 control front panel LAN LED setting s. It allows the user to monitor LAN activities from th e front of the system . State of Link Link LED (green) Speed LED (green/yello w) No link OFF OFF Link @ 10M bps ON OFF Link @ 10 0Mbps ON Green Link @ 100 0Mbps ON Yellow activity BLINK[...]

40 2.6.6 Front Panel LAN LED Connector Header CN52 controls the front panel LAN LED activati on. Front panel LAN LED are meant to show link and activity. When link is established, the LED stays on. When LAN transfer is in progress, the LED flashes. To activate the front panel LAN LED, connect the LED wires to CN52. Each front panel LAN LED requi re[...]

41 2.6.7 System Speaker Connector Header CN46 controls the speaker activation. To activate the system sp eaker, connect the speaker wire to CN46. Refer to the following diagram for the location of CN46 .[...]

42 2.6.8 Front USB Connec tor Header CN23 controls the two front USB c onnections. To activate the front USB, conn ect the two USB wire to CN23. Each USB wire requi res 4 pins; CN23 has 9 pins, therefore supports two USB connections. The one ex tra pin is for chassis ground use. Refer to the following diagram for the location of CN23.[...]

43 Side A shares th e same bus as USB A, therefore two USB devices cannot use side A and USB A tog ether. Only one device wi ll work at a time . The same goes for Side B a nd USB B.[...]

44 2.6.9 Front Panel Se rial Port C onnector Header CN29 controls the activation of front panel s erial port. In the specification, front panel serial port i s COM2, the back panel is COM1. Refer to the fol lowi ng diag ram for locat ion and orient ation of CN29.[...]

45 CHAPTER 3. BIOS SETUP This chapter discusses the PhoenixBIOS setup program built into th e ROM BIOS. BIOS is the basic inpu t/output system, the firmware on the m otherboard that enables the hardware to interface with the software. The setup program allows the users to m odify the basic system configurations according to their needs. The conf ig[...]

46 3.2 Using Setup The following table provides details about how to navigate the Setup program using keyboard. KEY FUNCTION Up Arrow ↑ Move to the previous item. Down Arrow ↓ Move to the next item. Left Arrow ← Move to the previous menu. Right Arrow → Move to the next menu. Esc In the submenu: Exit the submenu. In the main menu: Exit witho[...]

47 3.3 Troubleshooting In case the system cannot be boo ted after some changes in BIOS, use the clear CMOS ju mper setting to reset the BIOS to default. To a void such problem, configure only the items that you thoroughly understand and refrain from m odifying the default chipset settings.[...]

48 3.4 Main Menu: PhoenixBIOS Setup Utility Main Advance d Security Pow er Boot Exit Item Specif ic Help System Ti me [12:59:59 ] System D ate [11/30/2 002] Legacy Di skette A: [1.4 4/1.25 MB 3 ½ ] ► IDE Pri./ATA Ma ster [200GB] ► IDE Pri./ATA Sl ave [None] ► IDE Sec./ATA Master [200GB] ► IDE Sec./ATA Slave [None] ► SATA Port 0 M aster [[...]

49 3.4.1 IDE Chan nel sub-menu: When there is a drive install ed on an IDE or SATA, the sub menu will look lik e the following: PhoenixBIOS Setup Utility Main IDE Pri./ATA Master [200GB] Item Specif ic Help Type: [Aut o] L BA Format Total Sectors: 390721968 Maximum Capacity: 200GB Multi-Sector Tran sfers: [16 Sectors] LBA Mode Control: [Enabled ] 3[...]

50 Transfer Mode Standard Fast PIO 1 Fast PIO 2 Fast PIO 3 Fast PIO 4 FPIO 3/ DMA 1 FPIO 4/ DMA 2 Select th e method f or moving data to/from the drive. Au totype the drive to select the optim um transfer mode. Ultra DMA Mode Disabled Mode 0 Mode 1 Mode 2 Mode 3 Mode 4 Mode 5 Selects the Ultra DMA m ode used for moving data to/from the drive. Autot[...]

51 3.4.2 Boot F eature s ub-menu: PhoenixBIOS Setup Utility Main Boot Features Item Specif ic Help Floppy check: [Disabled] Summary scre en: [Disabled ] Boot-time Diagnostic Scr een: [Enabled] QuickBoot Mod e: [ Enabled] Extended Memory Testing: [Just Zero it] Enable d Veri fies floppy type on boot; disabled speeds boot. F1 Help ↑↓ Select Ite m[...]

52 3.5 Advanced Menu: PhoenixBIOS Setup Utility Main Advanced Security Po wer Boot Exit Item Specif ic Help Multiprocessor Spec ification [1.4] Installed O/S: [WIN2000] Reset Con figuration Data: [NO] Large Di sk Access Mod e: [D OS] Parallel ATA: [Both] Serial AT A: [Di sabled] Native Mod e Operation: [A uto] ► Advanced Chipset Control ► Advan[...]

53 Para llel AT A Dis abled Channel 0 Channel 1 Both Enable the PATA. Serial ATA Disabled Enabled Enable the SATA. Native Mode Operation Auto Parallel ATA Serial ATA Both Choose Native Mode for ATA. Note: Certain OS is not supported under native mode. Legacy USB Support Disabled Enabled Enable support for Legacy Universal Serial Bus Special Explana[...]

54 3.5.1 Advanced Chipset Sub M enu The Advanced Chipset Control Sub Menu looks lik e the following: PhoenixBIOS Setup Utility Adv anced Advanced Chipset Control Item Specif ic Help ► PCI Express De vice Control Memory Remap Function [Enabled] Memory RAS Feature Control [Standard] These items determine whether the integrated PCI devices will be e[...]

55 3.5.2 PCI Express Device Control Sub M enu The PCI Express Device Control Sub Menu looks lik e the following: PhoenixBIOS Setup Utility Adv anced PCI Express Device Control Item Specif ic Help Force Compliance Mode [Enabled] PCI-E port A D evice 2: [Aut o] PCI-E port A1 Device 3: [Auto] PCI-E port B Dev ice 4: [Auto ] PCI-E port B1 Device 5: [Au[...]

56 3.5.3 Advanced Pr ocessor Options Sub Men u The Advanced Processor Options Su b Menu looks like the following: PhoenixBIOS Setup Utility Adv anced Advanced Processor Options Item Specif ic Help Hyper Threa ding Technology [Enabled] Enabl es 2 nd Logical Processor. This is applicable only for Hy per- Threa din g supported Operating System. Check [...]

57 3.5.4 I/O Devi ce Configuration Sub M enu The I/O Device Configuration Sub Menu looks lik e the following: PhoenixBIOS Setup Utility Adv anced I/O Device Configuration Item Specif ic Help Serial port A: [Enab led] Base I/O Ad dress: [3F8] Interrupt: [IRQ 4] Serial port B: [Enab led] Base I/O Ad dress: [2F8] Interrupt: [IRQ 3] Floppy disk control[...]

58 3.5.5 Console Redirection Sub Menu The Console Redirection Sub Menu looks like the f ollowing: PhoenixBIOS Setup Utility Adv anced Console Redirection Item Specif ic Help Com Port Add ress [Disab led] Baud Rate [19.2K] Console Type [P C ANSI] Flow Control [CTS/ RTS] Console con nection [Dir ect] Continue C.R. after POST [O ff] If enabled, it wil[...]

59 3.5.6 IPMI Sub Menu The IP MI Sub Menu look s like t he fol lowing: PhoenixBIOS Setup Utility Adv anced IPMI Item Specif ic Help BMC/Scorpio Configuration IP Address [192.168.254.001] Subnet Mask [255.255.255.000] Default Gateway [192.168.254.254] IPMI Specification Version (Unknown) BMC Fir mware Version (Unk nown) System Even t Logging [Enable[...]

60 Date Format t o show MM DD YYYY DD MM YYYY YYYY MM DD Choose how you want the data field to be shown. Date Separator . / Choose which character to use in date entries. To learn more about the IP MI selections, refer to a separate Arima IPMI manu al for detailed usage.[...]

61 3.6 Security Menu: PhoenixBIOS Setup Utility Main Adva nced Security Po wer Boot Exit Item Specif ic Help Supervisor Pa ssword Is: Clear User Pa ssword Is: Clear Set Supervi sor Password: [Enter] Set User Pa ssword: [ Enter] Supervisor Password controls access to the setup utility. F1 Help ↑↓ Select Ite m -/+ Change Values F9 Setup De faults[...]

62 3.7 Power Menu: PhoenixBIOS Setup Utility Main Advan ced Security Power Bo ot Exit Item Specif ic Help Power Savi ng: [Disabled ] Power Button Behavior: [On/O ff] Instant O ff [ Disabled] Suspend Mode: [Suspend ] After Power Fa ilure: [La st State] Maxi mu m Powe r Savings conserves the greatest amount of system powe r. Maxi mu m perform ance co[...]

63 this state but remain in a lower power mode. If you choose Suspend then you also have the option of choose Save to Disk. After Power Failure Stay Off Last State Power On Sets the mode of operation IF an AC/Power Loss occurs. The two modes are: ‘Stay Off’ keeps the power off until power button is pressed; ‘Last State’ restores previous po[...]

64 3.8 Bo ot Menu: All the possible devices th at you can boot from are automatically detected and list ed on the page. The items with a ‘+’ in front of it indicates that the item is a category with m ore devices nested under it. You can use <Enter> to display the nested devices. The first device listed is the f irst boot device. In the e[...]

65 3.9 Exit Menu: PhoenixBIOS Setup Utility Main Advan ced Security Power Boot Exit Item Specif ic Help Exit Saving Changes Exit Disca rding Chang es Load Setup Defaults Discard Change s Save Ch anges Exit System Setup and save your ch anges to CMOS . F1 Help ↑↓ Select Ite m -/+ Change Values F9 Setup De faults ESC Exit ←→ Select Menu Enter[...]

66 Discard Changes If, during a Setup Session, you change your m ind about changes you have made and have not yet saved the values to CMOS, you can restore the values you previously saved to CMOS. Selecting “Discard Changes” on the Exi t menu updates all the selections and displays this message: Setup Conf irmation Load previous configuration n[...]

67 3.10 About the Bo ot Utilities The MainBoard comes with the following boot utilities: Phoenix QuietBoot™: Phoenix QuietBoot displays a graphic il lustration rather than the traditional POST messages while keeping you informed of diagnostic problems. Phoenix MultiBoot™: Phoenix MultiBoot is a boot screen that d isplays a selection of boot dev[...]

68 When <F10> is pressed Press <F10> switch to the PO ST screen and take one of two actions: 1. If MultiBoot is installed, the boot process continues with the POST screen until the end of POST, and then displays the Boot First Menu, text-based with these options: A: Load the o perat ing system from a boo t dev ice of your choice. B: Ent[...]

69 3.10.2 Phoenix MultiB oot Phoenix MultiBoot expands your boot options by letting you choose your boot device, which could be a hard disk, floppy disk, or CD ROM. You can select your boot devic e in Setup, or you can choose a different device each time you bo ot during POST by selecting your boot device in The Boot First Menu. MultiBoot consists [...]

70 3.11 BIOS Flash Upgrade Utility Phoenix Phlash gives you the ability to upd ate your BIOS from a floppy disk without having to in stall a new ROM BIOS chip. Phoenix Phlash is a utility for "flashing" (copying) a BIOS to the Flash ROM installed on your computer from a floppy disk. A Flash ROM is a Read-Only Memory chip that you can writ[...]

71 APPENDIX I: Glossary ACPI (Advanced Configuratio n and Power Interfa ce): a power m anagem ent specification that allows the operating system to control the amount of power distributed to the comp uter’s dev ices. Devices not in use can be turn ed off, redu cing unnecessary power ex penditur e. AGP (Accelerated Gr aphics Port): a PCI-based int[...]

72 Closed and open jumpers: jumpers and jumpe r p ins a re ac tive when they are “on” o r “closed”, and inactive when they are “off” or “open ”. CMOS (Complementary Metal-Oxide Semiconductors): chips that hold the bas ic startup information for the BIOS. COM port: anothe r name for the serial por t, whic h is called as such be cause[...]

73 ESCD (Extended System Configuration Data): a form at for storing i nformation about Plug-n-Play de vices in the system BIOS. This information helps properly confi gure the system each tim e it boots. Firmware : low-level software tha t controls th e system ha rdware. Form fac tor: an industry term for the s ize, shape, powe r supply type, and ex[...]

74 PCI-to-PCI bridge: allows you to connect multiple PCI devices onto on e PCI slot. PnP (Plug-n-Play): a design standard that h as become ascendant in the industry . Plug-n- Play devices require little set-up to use. De vices and operating systems that are not Pl ug- n-Play re quire you to reconfigur e your syst em each tim e you add or change any[...]

75 ZCR (Z ero Channel RAID): ZCR card provides R AID-5 solutio n by working with the onboard SC SI/SATA/SATA-I I chip t hrough sp ecial PCI -X slot wi th Intel RAIDIOS log ic, thus lowering cost o f RAID-5 solution[...]

76 APPENDIX II: Block Diagram For your convenience, we have included this block diagram to show the internal design of the mother board in order t o better aid yo u in troublesh ooting. This diagra m shows the bus and the chan nel of data flow. A g ood unders tanding of this diag ram can help you clarify the configuration choices for your own optim[...]

77[...]

78 APPENDIX III: FAQ[...]