Black Box SW722A-R2 KVM switch
Contents
1. 4 3 4 KEEP SETTINGS The Keep Settings command saves the current state of the ServSwitch s keyboard selectable settings to nonvolatile memory NVRAM where they become the new default loaded at power up settings To enter the command press and release the left Control Key then type K The seven keyboard selectable settings are described in the next seven sections 4 3 5 SET SCAN DELAY TIME Issue the Set Scan Delay time command to set the time in seconds that the ServSwitch will pause at each of the CPU ports when it s scanning them The factory default setting is 5 seconds To set a different delay time press and release the left Control Key type T followed by the new delay time in seconds 1 to 15 and press ENTER Enter the Keep Settings command after you enter this If you issue this command with an argument of zero the ServSwitch will set the scan delay time to the default value most recently saved in NVRAM 4 3 6 SET SCREEN SAVER INTERVAL This feature reduces the wear on your shared screen and provides security for your system by blanking the screen when there has been no keyboard activity for a specified length of time To set the screen saver interval press and release the left Control Key type V followed by the interval time in seconds 1 to 999 or 0 to disable the screen saver and press ENTER Enter the Keep Settings command after you enter this command To reactivate the screen when it s been blanked2. APRIL2003 SW721A E R2 SW722A E R2 lt gt BLACK BOX THE SERVSWITCH FAMILY Welcome to the ServSwitch Family Thank you for purchasing a BLACK BOX ServSwitch Brand KVM switch We appreciate your business and we think you ll appreciate the many ways that your new ServSwitch keyboard video mouse switch will save you money time and effort That s because our ServSwitch family is all about breaking away from the traditional expensive model of computer management You know the onessize fits all even if it doesn t model that says One computer gets one user station no more no less Why not a single user station monitor keyboard and mouse for multiple computers even computers of different platforms Why not a pair of user stations each of which can control multiple computers Why not multiple user stations for the same computer With our ServSwitch products there s no reason why not We carry a broad line of robust solutions for all these applications Do you have just two PCs and need an economical alternative to keeping two monitors keyboards and mice on your desk Or do you need to share dozens of computers including a mix of IBM PC RS 6000 Apple Macintosh Sun Microsystems and SGI compatibles among multiple users with different access levels Does your switch have to sit solidly on a worktable and use relatively inexpensive cables Or does it have to be mounte
3. press any key on the keyboard or if your mouse is PS 2 type move the mouse The default setting of this option is 0 screen saver disabled NOTE When the ServSwitch is in the Screen Saver state all of its SELECT or CURRENT PORT LEDs will be OFF CHAPTER 4 Operation 4 3 7 SET KEYBOARD MODE Keyboard modes are electrical signaling protocols that determine how a powered CPU and keyboard interact A CPU and keyboard must use the same mode in order to work with each other Of the three standard keyboard modes currently in use mode number 2 is the one used by the vast majority of CPUs It is also the default state of all 101 key and PS 2 keyboards Mode 1 is used primarily by certain PS 2 CPUs Mode 3 is used by certain specialized servers The ServSwitch supports all three of these modes As it receives signals from the keyboard it sends them to the currently selected CPU by emulating a keyboard of the appropriate mode for that CPU as it receives signals for the keyboard from the currently selected or scanned CPU it sends them to the keyboard by emulating a CPU of the appropriate mode Most CPUs that use keyboard mode 1 or 3 send a mode command to the keyboard at power up to put the keyboard in the proper mode ServSwitches can use these commands to automatically detect each such CPU s keyboard mode when you turn on the CPU after it has been cabled to the switch When they detect the mode 2 and 4 port units automatic
4. provide reasonable protection against such interference when the equipment is operated in a commercial environment Operation of this equipment in a residential area is likely to cause interference in which case the user at his own expense will be required to take whatever measures may be necessary to correct the interference Changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment This digital apparatus does not exceed the Class A limits for radio noise emission from digital apparatus set out in the Radio Interference Regulation of Industry Canada Le pr sent appareil num rique n met pas de bruits radio lectriques d passant les limites applicables aux appareils num riques de la classe A prescrites dans le R glement sur le brouillage radio lectrique publi par Industrie Canada R2 SERVSWITCH 10 11 NORMAS OFICIALES MEXICANAS NOM ELECTRICAL SAFETY STATEMENT INSTRUCCIONES DE SEGURIDAD Todas las instrucciones de seguridad y operaci n deber n ser le das antes de que el aparato el ctrico sea operado Las instrucciones de seguridad y operaci n deber n ser guardadas para referencia futura Todas las advertencias en el aparato el ctrico y en sus instrucciones de operaci n deben ser respetadas Todas las instrucciones de operaci n y uso deben ser seguidas El aparato el ctrico no deber ser usado
5. 2 PS 2 EHN283 DB15HD female 6 pin mini DIN 6 pin mini DIN female female Original CPU adapter cables Video Type Keyboard Type Mouse Type Product Code Connector on Cable Connector on Cable Connector on Cable VGA IBM PS 2 PS 2 EHN151 DB15HD male 6 pin mini DIN male 6 pin mini DIN male APPENDIX B Cable Product Codes Coaxial CPU adapter cables Video Type Keyboard Type Mouse Type Product Code Connector on Cable Connector on Cable Connector on Cable VGA IBM PS 2 PS 2 EHN282 DB15HD male 6 pin mini DIN male 6 pin mini DIN male USB CPU adapter cables Video Type Keyboard Mouse Product Code Connector on Cable Connector on Cable VGA USB Type A EHN385 DB15HD male Appendix C Pinout of RS 232 Port The table below shows the pinout of the ServSwitch s RJ 12 6 wire RJ 11 female RS 232 port Pin Signal Name Abbrev Direction Description 1 Data Set Ready DSR Input Reserved not used 2 Data Terminal Ready DTR Output Pulled high with 1 KQ resistor 3 Transmit Data TXD Output Serial data from port 4 Signal Ground SGND N A DC ground reference 5 Receive Data RXD Input Serial data to port 6 Request to Send RTS Output Pulled high with 1 KQ resistor BLACK BOX NETWORK SERVICES Customer Support Information FREE tech support 24 hours a day 7 days a week Call 724 746 5500 or fax 724
6. 746 0746 Mailing address Black Box Corporation 1000 Park Dr Lawrence PA 15055 1018 World Wide Web www blackbox com E mail info blackbox com O Copyright 2003 Black Box Corporation All rights reserved
7. Controls Keyboard commands 3 Front mounted pushbuttons ON OFF power NEXT switch to next port SCAN operate normally or automatically scan ports CHAPTER 1 Specifications Indicators SW721 models 5 Front mounted LEDs 1 POWER 2 SELECT 2 ON SW722 models 9 Front mounted LEDs 1 POWER 4 SELECT 4 ON Connectors All rear mounted All models 1 5 pin DIN female POWER 1 6 wire RJ 11 female RS 232 for remote control 1 DB25 female MONITOR KEYBOARD MOUSE SW721 models 2 DB25 female CPU SW722 models 4 DB25 female CPU Temperature Tolerance 32 to 131 F 0 to 55 C Humidity Tolerance 5 to 80 noncondensing Maximum Altitude 10 000 ft 3048 m Enclosure Steel Power For 120 VAC 60 Hz operation From wallmount power supply SW721A R2 SW722A R2 Optimal input 120 VAC 60 Hz at 100 mA Output 17 VAC CT at 700 mA Consumption Up to 11 9 VA For 240 VAC 50 Hz operation From desktop power supply SW721AE R2 SW722AE R2 Optimal input 230 VAC 50 Hz at 60 mA Output 17 VAC CT at 700 mA Consumption Up to 11 9 VA Size SW721 SW722 models 2 25 H x 8 8 W x 4 9 D 5 7 x 22 4 x 19 4 cm Weight SW721 SW722 models Net 3 Ib 1 4 kg R2 SERVSWITCH 2 Introduction Thank you for choosing a ServSwitch Designed with your needs in mind your new ServSwitch will simplify your job by helping you organize your multiple computer application Because the ServSwitch lets you us
8. data to CPUs in three byte increments Sometimes because of electronic transients unusual power up effects or plugging and unplugging of cables from live equipment the currently selected CPU in a ServSwitch system can lose one or two bytes of this control information and get out of sync with the shared mouse In this situation the mouse might seem to refuse to move the pointer or cursor open windows for no reason or exhibit other strange behavior To get the CPU back in sync send this command to tell the ServSwitch to send a null byte to the CPU s PS 2 mouse port this has no other effect than getting the CPU caught up To issue the Send Null Byte command press and release the left Control Key then type N If the mouse still isn t right after you issue this command the CPU must have been two bytes out of sync Issuing the command again should do the trick The CPU will be thrown out of sync if it uses a PS 2 mouse and it s in sync when you issue this command Issue this command two more times to get it back in sync again This command has no effect on CPUs that are not attached to your ServSwitch system through a PS 2 mouse port If you have version 9 01 or higher of the Microsoft mouse driver the CPU should never get out of sync Contact Microsoft if you would like to upgrade your Microsoft mouse driver CHAPTER 4 Operation 4 3 11 IDENTIFY ROM Unfortunately as with all complex equipment problems might arise with
9. in nonvolatile memory Rackmount kits are available 2 3 The Front Panel The KVM ServSwitch s front panel features three pushbutton switches and several LED indicators To familiarize yourself with these controls and indicators refer to Figure 2 1 below and the descriptions that follow CPU STATUS t 1 2 3 4 Aim co ON OFF Coco OO NEXT SCAN POWER SELECT ON SELECT ON SELECT ON SELECT ON Figure 2 1 The front panel of a KVM 4 to 1 ServSwitch SW722 POWER Power LED Lights to indicate that the unit is powered ON ON OFF Power Button Pressing this button turns the unit ON and OFF when the power supply is plugged into the unit and into a working outlet CPU STATUS CPU Status LEDs Numbered pairs of LEDs indicate the statuses of the CPUs connected to the corresponding ports on the rear panel SELECT or CURRENT PORT red Lights if the corresponding port is the currently selected port ON or CPU POWER green Lights if the device on the corresponding port is powered ON NOTE The 2 and 4 port models both share the same chassis which has 4 each of the SELECT and ON LED slots R2 SERVSWITCH NEXT Next Port Button Press this button to manually switch the shared monitor keyboard and mouse from the currently selected computer to the next one in sequence SCAN Scan Mode Button When the ServSwitch is ON and operating normally not scanning press the button once to put the button in
10. that the monitor keyboard and mouse you plan to use can meet the demands of your application See Section 4 1 Also note that the ServSwitch does not support dongles at the time of this writing 1 After you verify that the ServSwitch is turned OFF plug the DB25 male connector of the user cable into the port labeled MONITOR KEYBOARD MOUSE on the ServSwitch s rear panel 2 Plug the cables from your shared monitor keyboard and mouse into the corresponding connectors on the other ends of the user cable 3 2 3 CONNECTING CPUs CPU Adapter Cables run from the ServSwitch to the keyboard port mouse port and video port of each CPU you want to directly attach to it Different types of this cable fit the connectors on different computers see Appendix B This cable also comes in the different lengths supported by different applications see Section 4 1 3 CHAPTER 3 Installation CAUTION Avoid routing cable near fluorescent lights air conditioning compressors or machines that may create electrical noise Total length of original Serv cable from the keyboard monitor and mouse to any given CPU should not exceed 25 ft 7 6 m For typical equipment and video resolutions length of coaxial cable should not exceed the 20 ft 6 1 m from a ServSwitch to any attached device keyboard monitor mouse or CPU However we do provide coaxial cable in lengths up to 100 ft 30 5 m because some CPUS can drive and receive keyboard and mou
11. to 127 Sets the keyboard typematic automatic key repeat function of the currently selected CPU This command works only with CPUs that have standard 101 key keyboards and CMOS that allows users to program the typematic function Reset CTRL R Resets and enables the keyboard and mouse also refreshes the monitor Issue this command to correct your keyboard or mouse if one of them malfunctions or gets stuck Send Null Byte CTRL N Causes the ServSwitch to send a null byte to the CPU s PS 2 mouse port Issue this command to correct the current CPU if it gets out of sync with the PS 2 mouse see Section 4 3 13 Identify ROM CTRL I Causes the ServSwitch to report the version of ROM it is using Issue this command if you are asked to do so by a technical support person CHAPTER 4 Operation 4 3 The Commands in Detail 4 3 1 SELECTING A PORT FROM THE SHARED KEYBOARD To select a port from your keyboard press and release your keyboard s left Control Key CTRL then type in the port number If Maximum Ports is set to 1 to 4 The ServSwitch will immediately switch to the desired port when you press the one digit number s numeral key 4 3 2 SWITCHING TO THE NEXT OR PREVIOUS PORT From the keyboard you can go forward or backward through the ServSwitch s ports by selecting either the next or the previous port respectively To switch to the next port press and release the left C
12. your ServSwitch that require the assistance of technical support personnel One of the things technicians might want to know when they attempt to diagnose and correct your problem is the revision level of your ServSwitch s ROM This command causes the ServSwitch to send the three character xxx ROM level to the currently selected CPU these characters will be echoed back to the shared monitor if you are at some type of prompt To issue the Identify ROM command press and release the left Control Key then type I 4 4 Using the RS 232 Port Optional For your convenience a computer or terminal with an RS 232 serial port can be connected to the RS 232 serial port on the ServSwitch s rear panel This allows you to send switching commands from a non local keyboard rather than from the shared keyboard You ll need a twisted pair serial cable with 6 pin RJ 11 connectors plus the appropriate adapter either DB25 female to RJ 11 female our product code FA044 or DB9 female to RJ 1 1 female our product code FA043 depending on your computer terminal Take these steps 1 Plug one end of the cable into the RS 232 serial port on the ServSwitch s rear panel and the other end of the cable into the RJ 11 female connector on the appropriate adapter CAUTION Serial cabling in excess of 50 feet 15 2 m should be routed with caution The maximum cable length depends upon the construction of the cable and its routing For extended runs shielded c
13. AN button of a ServSwitch might have been in the wrong in position when the unit was powered up Try turning OFF the attached CPUs turning OFF the ServSwitch putting the button s in the out position turning ON the ServSwitch and rebooting the attached CPUs 5 3 12 THE SERVSWITCH DOESN T WORK WITH YOUR DOCKING STATION At the time of this writing the ServSwitch does not support docking stations for portable computers 5 3 13 THE SERVSWITCH DOESN T WORK WITH YOUR DONGLE PROTECTED SOFTWARE At the time of this writing the ServSwitch does not support dongles the devices required to be inserted into the keyboard line by some software for copy protection 5 4 Calling Black Box If you determine that your ServSwitch is malfunctioning do not attempt to alter or repair the unit It contains no user serviceable parts Contact Black Box at 724 746 5500 R2 SERVSWITCH Before you do make a record of the history of the problem We will be able to provide more efficient and accurate assistance if you have a complete description including the nature and duration of the problem when the problem occurs the components involved in the problem any particular application that when used appears to create the problem or make it worse 5 5 Shipping and Packaging If you need to transport or ship your ServSwitch Package it carefully We recommend that you use the original container e If you are s
14. Axxx ENTER CTRL K Typematic rate of 10 9 characters xxx 0 to 127 see per second Section 4 3 11 Appendix B Cable Product Codes The table below and on the next page lists the product codes for all the types of cables we currently offer for use with the ServSwitch The four digits that follow the dash in each product code indicate how long each cable is in feet one foot 305 cm For some cables xxx s are shown in place of the last three digits of the product code because the cables come in several stock lengths For original standard CPU adapter cables these last three digits can be 005 010 020 050 075 or 100 for 5 foot 1 5 m 10 foot 3 m 20 foot 6 1 m 50 foot 15 2 m 75 foot 22 9 m or 100 foot 30 5 m cables respectively If your monitor keyboard mouse sharing system has cabling requirements that can t be met by what you see here call Black Box for a possible quote on custom cables or adapters Original monitor keyboard mouse adapter cables Monitor Type Keyboard Type Mouse Type Product Code Connector on Cable Connector on Cable Connector on Cable VGA IBM PS 2 PS 2 EHN154 DB15HD female 6 pin mini DIN 6 pin mini DIN female female Coaxial monitor keyboard mouse adapter cables Monitor Type Keyboard Type Mouse Type Product Code Connector on Cable Connector on Cable Connector on Cable VGA IBM PS
15. Connectors will vary depending on the types of equipment you are installing SERVSWITCH Power Supply 17 VAC CT Keyboard Mouse Mouse L Adapter Keyboard Monitor Cable CPU Adapter Cable Keyboard Mouse Video Card Figure 3 1 Basic system setup of a 4 port SW722 R2 unit R2 SERVSWITCH 3 2 Installation Procedure This section provides complete basic instructions for the hardware setup of a single ServSwitch For an illustrated example of the elements of a basic setup see Figure 3 1 on the previous page 3 2 1 RACKMOUNTING OPTIONAL If you want to mount the ServSwitch in a 19 rack you will need a ServSwitch Rackmounting Kit our product code SW727 for the 2 and 4 port models The ServSwitch is pre drilled to accept the kit s rackmounting screws If you want to mount the Switch in a 23 or 24 rack call Black Box for a special quote on a 23 or 24 kit 3 2 2 CONNECTING THE MONITOR KEYBOARD AND MOUSE A Monitor Keyboard Mouse MKM Adapter Cable connects your monitor keyboard and mouse to the ServSwitch Because various styles of electrical connectors are used by different classes of equipment we supply this cable in various styles to match see Appendix B This cable also comes in the different lengths supported by different applications see Section 4 1 3 and Appendix B CAUTION Make sure
16. R MOUSE DRIVER DOESN T LOAD A What type of mouse are you using If it s an RS 232 serial mouse see steps B and D If it s a PS 2 mouse see steps C and D If it s a Microsoft BallPoint mouse see step D At the time of this writing the ServSwitch does not support other types of mice B RS 232 serial mouse Make sure that you re using the right COM port and that the mouse driver is looking for the correct port C PS 2 mouse To recognize the mouse the CPU must be directly connected to it or indirectly connected to it through the ServSwitch at boot up time Make sure that all cables are properly seated and that the switch is ON then reboot the CPU D Your mouse driver might be old or incompatible with your mouse Try the latest version of the Microsoft mouse driver 5 3 5 YOU CAN T ACCESS ALL THE FUNCTIONS OF YOUR MOUSE A What type of mouse is it If it is any other type than those listed as being supported in item A under Section 5 3 4 chances are that the ServSwitch doesn t support it B If your mouse is a Microsoft BallPoint you need the latest version of the Microsoft mouse driver C If your mouse is a Logitech mouse the ServSwitch supports the two button models but not the three button models R2 SERVSWITCH 5 3 6 YOUR PS 2 MOUSE GETS OUT OF SYNC Cabling might have been disturbed during mouse movement Issue the Send Null Byte command see Section 4 3 13 once or twice to get the mouse back in sync You
17. able should be used Avoid routing near fluorescent lights air conditioning compressors or machines that may create electrical noise If you experience a lot of data errors use shorter cables The ServSwitch s data rate of 9600 bps cannot be changed to alleviate this problem ho Connect the adapter to one of the computer s or terminal s COM ports 3 Set your computer for serial communication at 9600 bps no parity 8 data bits and 1 stop bit 4 To switch the ServSwitch to a different port type or send the desired port number followed by ENTER a return 5 Troubleshooting The first two sections of this chapter discuss things to try when problems arise in a ServSwitch system If the trouble you re having with the Switch is something you haven t seen before or if the trouble seems minor try the procedures detailed in Sections 5 1 and 5 2 before doing anything else The third section of this chapter suggests possible causes and solutions to frequently encountered problems if the trouble is chronic see Section 5 3 Sections 5 4 and 5 5 discuss what s involved in calling Black Box and shipping your ServSwitch CAUTION We strongly recommend that you avoid opening the ServSwitch s cover If for some reason you need to do this be very careful to replace each screw in the same hole you took it from There are three different lengths of screws involved and putting a longer screw in a hole reserved for a shorter scr
18. ach CPU This single cable reaches the CPU s video output keyboard and mouse ports Lastly you can connect the ServSwitch to the shared monitor keyboard and mouse with a single MKM Adapter Cable The exact variety or varieties of these cables that you ll need will depend on the equipment you are connecting for your application Refer to Appendix B for the available types of these cables and the corresponding product codes Also refer to Chapter 1 for information about maximum cabling distances NOTES SVGA over longer distances and XGA video place special demands on cabling that the regular MKM Adapter Cables and CPU Adapter Cables typically cannot meet For these applications you should use coaxial cables that can carry video signals not only farther but also at higher resolutions See Appendix B To carry true monochrome video or to share a 9515 9517 or 9518 monitor you will need special cabling Call Black Box for technical support we can give you a quote on these types of cable For systems in which some CPUs output EGA video and others output VGA SVGA or XGA you would need regular VGA type or coaxial SVGA XGA type CPU Adapter Cables for all CPUs as well as an EGA to VGA adapter for each EGA computer Call for a quote on EGA to VGA adapters CHAPTER 3 Installation 3 Installation 3 1 Quick Setup Guide Figure 3 1 shows a basic example of connecting a CPU a keyboard a monitor and a mouse to the ServSwitch
19. ally save it to NVRAM so that if they are turned OFF they will remember it when they are turned ON again The ServSwitch can t detect the CPU s keyboard mode if your CPU doesn t send mode commands most CPUs that use mode 2 fall into this category or the CPU is already ON when you connect it to the ServSwitch it shouldn t be In these situations the ServSwitch tries to use the keyboard mode setting stored in its nonvolatile memory for that port The factory default is mode 2 for all ports Send the Set Keyboard Mode command to change the keyboard mode for a port if the CPU on that port uses mode 1 or 3 e it uses mode 2 but the default setting of the port you want to connect it to has been changed or you don t know which mode the CPU uses or the port is set for but the keyboard s behavior makes you suspect that the port s setting is wrong To set the keyboard mode of the currently selected port on a ServSwitch press and release the left Control Key type M and press the numeral key of the mode number 1 2 or 3 After you enter this command enter the Keep Settings command to save the mode setting in NVRAM so that the new setting becomes the default value preserved during power down and reloaded at power up R2 SERVSWITCH If most or all of the CPUs you ll be connecting to your ServSwitch system use a keyboard mode other than 2 you might want to change the defaults of their switch ports at installation
20. cceptable images clear small reflections around lettering depending upon color if you examine the screen closely you will find defects 2 Acceptable slightly fuzzy images readable text acceptable for casual use but not for prolonged viewing since this will cause eye fatigue 1 Unusable images smeared text not easily readable 75 Hz refresh rate used for testing CAUTION Some CPUs can t drive or receive keyboard and mouse signals across longer runs of coaxial cable Consult with the manufacturers of your CPUs before installing this cable in lengths greater than 20 ft 6 1 m R2 SERVSWITCH One last note of caution about video The IBM 9515 9517 and 9518 monitors that come with some PS 2 systems are not normal VGA monitors and require special cabling in order for video to be correctly sized and synchronized Call Black Box for technical support if you want to use one of these monitors 4 2 Keyboard Command Summary Table 4 2 below and on the next two pages summarizes the commands that can be sent to the ServSwitch To enter any command at the shared keyboard first press and release the left Control Key represented by CTRL This cues the ServSwitch to look for commands from that keyboard Then enter the command followed by any arguments you wish to specify the port number for example Letter commands are not case sensitive they are all shown in uppercase for clarity only When you enter numeric
21. cerca del agua por ejemplo cerca de la tina de ba o lavabo s tano mojado o cerca de una alberca etc El aparato el ctrico debe ser usado nicamente con carritos o pedestales que sean recomendados por el fabricante El aparato el ctrico debe ser montado a la pared o al techo s lo como sea recomendado por el fabricante Servicio El usuario no debe intentar dar servicio al equipo el ctrico m s all a lo descrito en las instrucciones de operaci n Todo otro servicio deber ser referido a personal de servicio calificado El aparato el ctrico debe ser situado de tal manera que su posici n no interfiera su uso La colocaci n del aparato el ctrico sobre una cama sof alfombra o superficie similar puede bloquea la ventilaci n no se debe colocar en libreros o gabinetes que impidan el flujo de aire por los orificios de ventilaci n El equipo el ctrico deber ser situado fuera del alcance de fuentes de calor como radiadores registros de calor estufas u otros aparatos incluyendo amplificadores que producen calor El aparato el ctrico deber ser connectado a una fuente de poder s lo del tipo descrito en el instructivo de operaci n o como se indique en el aparato NOM STATEMENT 12 Precauci n debe ser tomada de tal manera que la tierra fisica y la polarizaci n del equipo no sea eliminada 13 Los cables de la fuente de poder deben ser guiados de tal manera que no sean pisados ni pellizcado
22. commands or arguments use only the numbered keys at the top of your alphanumeric keyboard Numbers entered from the numeric keypad to the right will not be recognized as valid commands All of these commands have a two second timeout between characters This means that if you begin entering a command but you stop for more than two seconds at any time before you type the final character the command is aborted and the ServSwitch returns to normal operation This keeps the ServSwitch from getting stuck waiting for you to finish the command The CTRL character is always passed through to the CPU The command characters and operands however are absorbed by the ServSwitch and are not sent to the CPU Table 4 2 The ServSwitch s keyboard commands Command Keystroke Sequence Description Select Port CTRL xxx Connects your shared monitor xxx a 1 to 3 digit keyboard and mouse to the specified port number port Switch to the CTRL Switches to the next port in sequence Next Port You can also access the next port by pressing the NEXT button on the ServSwitch s front panel CHAPTER 4 Operation Table 4 2 continued The ServSwitch s keyboard commands Command Keystroke Sequence Description Switch to the Previous Port CTRL Switches to the previous port in sequence Scan ON CTRL S Turns Scan mode ON causing the ServSwitch to start scanning sequentially from th
23. d in an equipment rack and use convenient many to one cables No matter how large or small your setup is no matter how simple or how complex we re confident we have a ServSwitch system that s just right for you The ServSwitch family from Black Box the one stop answer for all your KVM switching needs c This manual will tell vou all about vour and troubleshoot it R2 ServSwitch including how to install operate R2 SERVSWITCH TRADEMARKS USED IN THIS MANUAL AT IBM PS 2 and ThinkPad are registered trademarks and PC XT is trademark of International Business Machines Corporation Logitech is a registered trademark of Logitech Inc Microsoft and Windows are either registered trademarks or trademarks of Microsoft Corporation in the United States and or other countries Any other trademarks mentioned in this manual are acknowledged to be the property of the trademark owners FCC AND IC RFI STATEMENTS FEDERAL COMMUNICATIONS COMMISSION AND INDUSTRY CANADA RADIO FREQUENCY INTERFERENCE STATEMENTS This equipment generates uses and can radiate radio frequency energy and if not installed and used properly that is in strict accordance with the manufacturer s instructions may cause interference to radio communication It has been tested and found to comply with the limits for a Class A computing device in accordance with the specifications in Subpart B of Part 15 of FCC rules which are designed to
24. dix B Cable Product Codes 40 Appendix C Pinout of RS 232 Port 42 R2 SERVSWITCH 1 Specifications Compliance FCC Class A DOC Class MDC classe A Standards With original Serv cabling VGA color monochrome or page white EGA color or monochrome or CGA video With original Serv cabling minimal or coaxial cabling recommended SVGA video With coaxial cabling XGA color or monochrome video With special cabling True monochrome video Interfaces CPU and MONITOR KEYBOARD MOUSE Ports Proprietary composite of IBM PS 2 keyboard PS 2 mouse and video standards listed above RS 232 Port Proprietary variant of EIA RS 232D using 6 wire RJ 11 connectors DTE Resolution With original Serv cabling Up to 1024 x 768 With coaxial or special cabling Up to 1280 x 1024 Protocols RS 232 Asynchronous Data Formats RS 232 8 data bits 1 stop bit no parity Speed RS 232 9600 bps Maximum Distance Depending on the CPU monitor and video resolution see Section 4 1 3 either 25 ft 7 6 m of total original Serv cable from the keyboard monitor and mouse to any CPU including up to 5 ft 1 5 m from any ServSwitch to any other Serv unit submaster attached to it or 20 ft 6 1 m of coaxial cable possibly as much as 100 ft 30 5 m depending on CPUs from any ServSwitch to any device attached to it Also 50 ft 15 2 m of serial cable from any ServSwitch s RS 232 port to a non local computer User
25. e current port through the remaining ports and then begin again at Port 1 Scan OFF CTRL X Turns Scan mode OFF the port being scanned at the time the command is entered is given access to the shared monitor keyboard and mouse NOTE Scan can also be stopped by entering a Select Port command Keep Settings CTRL K Enter this command after you enter any of the following seven commands it saves new settings to nonvolatile memory Set Scan Delay Time CTRL Txx ENTER xx delay in seconds from 1 to 15 Sets the time in seconds that the ServSwitch will pause at each port when scanning Set Screen Saver s Delay Time CTRL Vxxx ENTER xxx delay in seconds Sets the time of inactivity in seconds after which the ServSwitch will blank the shared monitor s screen The monitor is reactivated when the PS 2 mouse is moved or any key on the shared keyboard is pressed R2 SERVSWITCH Table 4 2 continued The ServSwitch s keyboard commands Command Keystroke Sequence Description Set Keyboard Mode Select port then CTRL Mx ENTER x 1 2 or 3 Tells the ServSwitch the keyboard mode of the CPU on the given port Issue this command to force a port to operate in a given mode or before any time you attach an already booted CPU to the ServSwitch Set Keyboard Typematic CTRL Axxx ENTER xxx a decimal value from 0
26. e one keyboard monitor and mouse to access a number of IBM PC compatible computers you can significantly reduce your equipment overhead and end keyboard and monitor clutter This chapter describes everything that comes with the switch the external and operating features of the switch and the cabling you ll need for the switch 2 1 The Complete Package Your ServSwitch package includes the ServSwitch its power supply and this manual If you didn t receive everything or if anything arrived damaged contact Black Box 2 2 Operating Features Some of the useful features of your ServSwitch Microprocessor controlled keyboard and mouse switching e Mouse can be PS 2 or RS 232 type Supports all modes of IBM PS 2 and compatible keyboards Supports SVGA XGA VGA or EGA color or monochrome CGA and true monochrome video at resolutions up to 1280 x 1024 although all video types except VGA EGA and CGA require coaxial or special cables e Select desired CPU from keyboard front panel or RS 232 port Front panel LEDs show selected CPU and its power on state Remembers and restores Num Lock Caps Lock Scroll Lock and keyboard mode among CPUs e Screen save function can turn off video after 1 to 999 seconds of inactivity e Scan function can sequence between CPUs every 1 to 15 seconds You can program the keyboard s typematic rate and delay CHAPTER 2 Introduction Custom settings for each CPU can be saved
27. ew can ground the chassis to the circuit boards and cause serious damage 5 1 Diagnostic Information If you re having difficulty with the ServSwitch there is always the possibility that it has accidentally been configured or set incorrectly To receive diagnostic information from a ServSwitch including the current settings of its parameters take these steps 1 Establish a remote control connection with the ServSwitch as described in Section 4 4 If you want to be able to save or print this information or even see the first part of it before it scrolls off the screen you should connect the ServSwitch to a computer running a terminal emulator program set to capture mode N Press the ServSwitch s NEXT and SCAN buttons simultaneously then return them to their previous positions The unit should immediately begin sending ASCII text of a diagnostic report out of its RS 232 port You might want to compare the reported conditions with the default and possible settings listed in Appendix A and the command descriptions in Sections 4 2 and 4 3 CHAPTER 5 Troubleshooting 5 2 Restoring Factory Defavlt Settings If you re having difficulty with a ServSwitch something that often helps is resetting the switch to its factory defaults Follow these steps carefully 1 Make sure that the ServSwitch and all CPUs directly or indirectly connected to it are turned OFF Press and hold in the NEXT button on the front of t
28. have two seconds in which to start entering a valid command If no command is begun within two seconds or if an invalid command is entered the ServSwitch aborts the command When entering commands that contain numbers or math symbols use only the numerical keys located at the top of your alphanumeric keyboard Numbers and symbols entered from the numeric keypad to the right will not be recognized as valid 4 1 Guidelines for Using the ServSwitch with Your Equipment 4 1 1 CPUs Use only IBM PS 2 or 100 compatible machines The ServSwitch does not support IBM AT PC XT or compatible machines 4 1 2 MOUSE AND KEYBOARD When you power up your ServSwitch system make sure that your CPUs mouse mice and keyboard s are properly cabled to the ServSwitch Unless it s absolutely necessary don t disconnect and reconnect a mouse or keyboard from a ServSwitch while the Switch is ON if you have to do this issue the Reset command CTRL R see Section 4 3 12 after you reconnect the mouse or keyboard The mouse must be a 2 button PS 2 mouse by Microsoft or Logitech R2 SERVSWITCH Use only the generic Microsoft mouse driver MOUSE COM version 4 0 at least and preferably version 9 01 or higher If you re running Windows this driver must be loaded in Windows as well as in the base operating system Do not on any of your switched CPUs run any programs or TSRs or enter any DOS commands that change the settings of the mou
29. he ServSwitch While holding in the NEXT button push the ON OFF button on the front of the ServSwitch to power up the switch 3 Wait until Port 2 s red LED lights up then release the NEXT button 4 Cycle power to the switch push the ON OFF button once to turn the switch OFF then push it again to turn the switch ON 5 Select Port 1 on the ServSwitch Power up the device on Port l if the device is a CPU wait for it to go completely through its boot up process Then select Port 2 power up that device and so on 6 Starting with the lowest numbered CPU and proceeding to the highest numbered one power up the CPUs one at a time waiting for each to boot completely before going to the next Now reconfigure the box to your desired settings If you re still having difficulty refer to Section 5 3 If it doesn t help you to solve your problem call Black Box for technical support 5 3 Common Problems 5 3 1 A CPU CONNECTED TO YOUR SERVSWITCH DOESN T BOOT AND YOU GET A KEYBOARD OR MOUSE ERROR A First make sure your ServSwitch is plugged in and powered up B If the switch is ON check its configuration The keyboard and mouse settings for that CPU might not be correct C If the configuration is OK check your cables Tighten any loose connections If the keyboard and mouse strands of either the CPU cable or the MKM cable have been reversed plug them into the proper ports D If you don t find a cable error try swapping
30. hipping the ServSwitch for repair make sure you include everything that came in the original package Before you ship contact Black Box to get a Return Authorization RA number APPENDIX A NVRAM Factory Defaults Appendix A NVRAM Factory Defaults The table below shows for the ServSwitch s saveable options the default values stored in nonvolatile memory NVRAM when the ServSwitch is shipped from the factory It also shows what commands or actions can change these settings for the ServSwitch s current operating period as well as what commands or actions can save changed settings to NVRAM so that they become the new defaults Option Factory Default Setting To Change To Save Changes Caps Scroll Num Lock Num Lock ON fixed Select port then press the corresponding button on the keyboard Can t be saved Scan OFF Push the SCAN button on Can t be saved the ServSwitch or type CTRL S to turn ON or CTRL X to turn OFF Scan Delay 5 seconds Type CTRL Txx ENTER CTRL Time xx any 1 or 2 digit number time in seconds Screen Saver s OFF disabled setto Type CTRL Vxxx ENTER CTRL K Delay Time zero xxx any 1 to 3 digit number time in seconds Keyboard Mode Mode 2 Select port then type CTRL K CTRL Mx X21 2 or 3 Units 0 no submasters Type CTRL Uxxx ENTER CTRL K xxx 0 to 255 Keyboard 43 delay or Y second Type CTRL
31. ick Set p Guide mu ia haa Site 15 3 2 Installation Procedure eee 16 3 2 1 Rackmounting Optional 0 00 00 eee eee eee 16 3 2 2 Connecting the Monitor Keyboard and Mouse 16 3 2 3 Gonnecting bli d 16 3 2 4 Powering Up the System 0 0 0 0 eee ee eee eee 17 3 2 6 Switching from the 18 4 Operation xu 950 esu tea in 19 4 1 Guidelines for Using the ServSwitch with Your Equipment 19 BAM CPUS PS OUI quce 19 4 1 2 Mouse and eee 19 41 5 RR SURES GSE BY Oa a ee e a E REA 20 4 2 Keyboard Command 5 22 4 3 The Gommands in Detail iss RR ree RUPES ES 25 4 3 1 Selecting a Port from the Shared Keyboard 25 4 3 2 Switching to the Next or Previous 25 43 9 SSCA ga Basse ck 25 4 5 4 Keep cirio h er eee eub ayant 26 43 5 Set Scan Delay Time been pes 26 4 3 6 SetScreen Saver 26 43 7 Set Keyboard 4 0 0 cece eee eee eee eee 27 4 3 8 Set Keyboard Typematic esee 28 qo eR aer E e 30 4 5 T0 Send Null ts eb P pee us 30 Identify ROM assa estne REC eror uid 31 4 4 Using the RS 232 Port Optional L 31 CONTENTS Chapter Page 5 T
32. in different keyboards and or mice one at a time If the problem goes away when you substitute a device the old one might have gone bad R2 SERVSWITCH E If swapping input devices doesn t solve the problem begin swapping your cables one at a time If the problem goes away when you substitute a cable the old cable is probably defective F If swapping cables doesn t solve the problem try plugging the CPU into a different CPU port on the ServSwitch If the CPU boots when it s connected to a different port the old port is probably defective G If swapping ports doesn t solve the problem try plugging a known good keyboard and mouse directly into the CPU that s having the problem If the CPU boots the ServSwitch might be defective call Black Box H If the CPU still doesn t boot the CPU s keyboard or mouse port or other components might be defective If the CPU s Power LED doesn t light the fuse on the CPU s motherboard might be blown If you still have them plug that CPU s original monitor keyboard and mouse into it and try again If the CPU does not boot with its original equipment something in the CPU is defective call the CPU s manufacturer If the CPU does boot there is some kind of unusual mismatch between that CPU and the shared monitor keyboard or mouse call Black Box for technical support 5 3 2 YOU CAN T SWITCH PORTS FROM THE KEYBOARD A Can you do anything from the keyboard If not the keyboard strand of
33. lan to connect you continued must have an Adapter Cable See Section 2 5 NOTE The 2 and 4 port models both share the same chassis which has 4 CPU X connector slots The extra connector slots in the chassis of the 2 port models are left blank but are protected by material mounted inside the chassis MONITOR DB25 Connect the shared monitor keyboard and KEYBOARD mouse to this port using an MKM Adapter MOUSE Cable At the switch end this cable has a DB25 male connector at the other ends it has appropriate connectors to plug into your monitor keyboard and mouse cables Only one MKM Adapter Cable is needed See Section 2 5 RS 232 RJ 11 F If you connect a more distant computer or terminal to this RS 232 serial port you ll be able to send switching commands to the ServSwitch from a secondary location R2 SERVSWITCH Panel Label Connector Description POWER 5 pin Connect the ServSwitch s power supply cord DIN F here This is not a keyboard input Power transformers are available for 110 VAC or 230 VAC Both have center tapped output of 17 VAC at 700 mA 2 5 Cable Requirements Many switches of this type have what seems like ten million connectors on their rear panels one for each CPU s video cable one for each keyboard cable and a third for each mouse cable The potential for tangling or mismatching cables is high By contrast you can connect the ServSwitch to your CPUs with one CPU Adapter Cable for e
34. les to carry the video correctly Call Black Box for technical support B Check the settings of your monitor especially the sync or color controls C Your monitor might not be capable of synching to the selected video resolution or frequency refresh rate Try a lower resolution or frequency or a more powerful monitor D If the video problem is not centered on the monitor check the video strands of your cables Tighten any loose connections CHAPTER 5 Troubleshooting E If no cable connectors are loose begin swapping your cable one at a time If the problem goes away when you substitute a cable the old cable is probably defective F If swapping cables doesn t solve the problem try plugging the CPU into a different CPU port on the ServSwitch If the problem goes away when the CPU is connected to a different port the old port is probably defective 5 3 10 YOUR VIDEO Is OK IN LOW RESOLUTION MODE BUT You CAN T GET INTO HIGH RESOLUTION MODE A If you re using XGA you must use coaxial cables see Section 4 1 3 and Appendix B B Check your video driver It might not be set up correctly for your desired resolution 5 3 11 You CAN T SEEM TO SCAN OR SWITCH TO ONE OR MORE OF YOUR CPUs A The Units value might not be set correctly If any of the CPUs you can access are receiving garbage characters this is a good indicator Try setting it now see Section 4 3 10 B If issuing the command doesn t help the SC
35. need the latest version of the Microsoft mouse driver to stop this from happening 5 3 7 YOUR MOUSE DOESN T MOVE THE POINTER CURSOR A What type of mouse is it If it is any other type than those listed as being supported in item A under Section 5 3 4 chances are that the ServSwitch doesn t support it B If your mouse is a PS 2 type it might not have been connected to the ServSwitch when the ServSwitch was turned ON It might also have been disconnected and reconnected after the switch was turned ON C Your mouse must be connected to a powered ServSwitch when the CPUs are booted and when mouse applications are run Try exiting and reentering your application if this doesn t work issue the Reset command see Section 4 3 12 5 3 8 YOUR MONITOR DISPLAY IS FUZZY A Check the settings of your monitor especially the sharpness control B If you can t solve the problem by changing the monitor settings you might have run cable too far maximum distance of original Serv cable from any CPU to the shared monitor keyboard and mouse is 25 ft 7 6 m The distance you can run will be less than the maximum if you are using SVGA video You might need to upgrade from original Serv cables to coaxial cables that carry the video signal better See Section 4 1 3 and Appendix B 5 3 9 YOUR VIDEO Is NOT SYNCHRONIZED OR IS THE WRONG COLOR A If you are trying to use true monochrome video or a 9515 9517 or 9518 monitor you need special cab
36. olutions or longer distances very well without coaxial cabling see the next two pages With coaxial cables it will also support XGA Lastly it will also support true monochrome video but this requires special cabling call Black Box for technical support NOTE If you are running a mixed VGA and EGA system you will need VGA cables and EGA to VGA adapters for all your CPUs You will also need a multisyne monitor capable of synchronizing to a horizontal scan rate of 15 5 to 35 kHz These can be hard to find One set of models that fit the bill is older NEC Multisync II monitors CHAPTER 4 Operation Coaxial cables do well at maintaining video quality as shown in Table 4 1 The distances in the table are total cable lengths measured from the CPU to the monitor The table assumes a single ServSwitch is between the CPU and monitor Table 4 1 Video quality vs distance for coaxial cables Resolution Distance feet 5 10 20 35 50 75 100 150 200 640 x 480 24 24 74 23 CA 4 C4 C4 C4 C4 C4 C3 C3 800 x 600 Z4 24 24 23 CA C4 C4 C4 C4 C4 C4 C3 1024 x 768 24 24 24 23 CA C4 C4 C4 C4 C4 C3 C3 C2 1280 x 1024 24 73 Z3 23 CA 4 C4 C3 C2 C2 C2 Z Standard coax cabling EHN151 C Coax cabling EHN282 4 Perfect or near perfect unable to easily detect defects in screen 3 Very a
37. ond 750 ms 96 11 xxxxx 1 second 1000 ms CHAPTER 4 Operation Table 4 4 Typematic rate Decimal Value Binary Bit Values Repeat Rate in Keys per Second xx 00000 30 xx 00001 xx 00010 24 xx 0001 1 xx 00100 20 xx 00101 xx 001 10 xx 001 11 xx 01000 xx 01001 xx 01010 xx 0101 1 xx 01100 xx 01101 01110 01111 xx 10000 xx 10001 xx 10010 xx 10011 xx 10100 xx 10101 xx 10110 xx 10111 xx 11000 xx 11001 xx 11010 xx 11011 xx 11100 xx 11101 xx 11110 xx 11111 AN Oat WN O R2 SERVSWITCH 4 3 9 RESET This command along with the two commands described in the next two sections comes in handy when certain problems arise It will reset or refresh your shared equipment Issue it if a your shared keyboard gets stuck or begins behaving oddly b you need to send mouse data to a CPU that hasn t enabled the mouse this can happen if you boot up the CPU while the ServSwitch is off or disconnected c your video display has not been updated to show current conditions or d while using a PS 2 type mouse you unplug it then plug it back in To issue the Reset command press and release the left Control Key then type R If you re using a PS 2 type mouse don t issue this command to a CPU that doesn t have a mouse driver loaded Many CPUs will crash if you send them unexpected mouse data 4 3 10 SEND NULL BYTE PS 2 type mice send control
38. ontrol Key CTRL then press the plus key the key at the top of the keyboard marked with and To switch to the previous port press and release CTRL then press the minus key the key at the top of the keyboard marked with and _ The command is not case sensitive Do not use the and keys on the keyboard s numeric pad the ServSwitch doesn t recognize these You can also select the next port manually from the ServSwitch s front panel by pushing the button labeled NEXT Each time you press the button the next port in sequence is selected You cannot select the previous port from the Switch s front panel without cycling through all the ports 4 3 3 SCAN MODE To enable scanning switching from CPU to CPU in a continuous rotation from the keyboard press and release the left Control Key CTRL then press S The ServSwitch will begin scanning sequentially from its currently selected port through the higher numbered ports then begin again at CPU Port 1 As it scans it delays 1 to 15 seconds at each port This Scan Delay Time is user selectable see Section 4 3 5 To stop scanning press and release CTRL then press X You can also disable scanning by entering a Select Port command ServSwitch letter commands are not case sensitive You can enter upper or lower case letters To enable scanning from the front panel of a single or master ServSwitch use the SCAN button see Section 2 3 R2 SERVSWITCH
39. r the ServSwitch the switch emulates all keyboard and mouse functions for automatic boot up although you might have to issue the Mode command Mn see Section 4 3 7 to get proper keyboard communication R2 SERVSWITCH 3 2 5 SWITCHING FROM THE KEYBOARD Your ServSwitch is now ready for operation using its default settings To take full advantage of the switch s features refer to Chapter 4 which gives detailed information about each of the ServSwitch commands describing each command s function and keystroke sequence For your convenience this information is summarized in Section 4 2 To begin switching immediately however just press and release your keyboard s left Control Key CTRL then within the next two seconds type in your desired port number with the regular number keys not the numeric keypad 4 Operation The first part of this chapter Section 4 1 gives you some guidelines that you should follow to make sure your ServSwitch works properly with your equipment Section 4 2 summarizes the ServSwitch s keyboard commands and Section 4 3 describes these commands in detail Section 4 4 outlines how you can select ports from an optional computer or terminal connected to the ServSwitch s RS 232 port NOTES To start any ServSwitch keyboard command you must press and release the left Control Key CTRL Pressing and releasing CTRL cues the ServSwitch to expect command characters from the keyboard You then
40. roubleshooting 2 2l9 exer Rer E Rr dokn 32 5 1 Diagnostic Information en 32 5 2 Restoring Factory Default Settings 35 5 39 5 3 Common Problems caca 33 5 3 1 A CPU Connected to Your ServSwitch Doesn t Boot and You Get a Keyboard or Mouse Error 33 5 3 2 You Can t Switch Ports from the Keyboard 34 5 3 3 Characters that You Type Come Up Wrong or Missing 35 5 3 4 Your Mouse Driver Doesn t 35 5 3 5 You Can t Access All the Functions of Your Mouse 35 5 3 6 Your PS 2 Mouse Gets Out 36 5 3 7 Your Mouse Doesn t Move the Pointer Cursor 36 5 3 8 Your Monitor Display is Fuzzy 36 5 3 9 Your Video is Not Synchronized or is the Wrong Color 36 5 3 10 Your Video is OK in Low Resolution Mode But You Can t Get Into High Resolution 37 5 3 11 You Can t Seem to Scan or Switch to One or More of Your CPUs i radere erbe 37 5 3 12 The ServSwitch Doesn t Work with Your Docking Station 37 5 3 13 The ServSwitch Doesn t Work with Your Dongle Protected 37 5 4 Calling Black ee t pee cate 37 5 5 Shipping and Packaging e 38 Appendix A Factory Defaults 39 Appen
41. s por objetos colocados sobre o contra ellos poniendo particular atenci n a los contactos y recept culos donde salen del aparato 14 El equipo el ctrico debe ser limpiado nicamente de acuerdo a las recomendaciones del fabricante 15 En caso de existir una antena externa deber ser localizada lejos de las lineas de energia 16 El cable de corriente deber ser desconectado del cuando el equipo no sea usado por un largo periodo de tiempo 17 Cuidado debe ser tomado de tal manera que objectos liquidos no sean derramados sobre la cubierta u orificios de ventilaci n 18 Servicio por personal calificado deber ser provisto cuando A El cable de poder o el contacto ha sido danado u B Objectos han ca do o l quido ha sido derramado dentro del aparato o C El aparato ha sido expuesto a la lluvia o D El aparato parece no operar normalmente o muestra un cambio en su desempeno o E Elaparato ha sido tirado o su cubierta ha sido danada R2 SERVSWITCH Contents Chapter Page Ts Sp CIBCati ns s miii ii RM dai dures 8 2 Mitrodu tioti it D ERR l hoe eae ht Res 10 2 1 The Complete Package cnica sehe ai ea ae En atada 10 2 2 Operating Features iie ve er eso ey PER erede ER Eae 10 2 5 The Front Panel a eere 11 24 The R ar Pauel E V Oe awe a RES RAE ER 12 2 5 Cable Requirements nn 14 Installation dd deta i 15 3 1 Qu
42. se port after the driver has been loaded Although the ServSwitch resists minor transient surges that can be caused by rapidly cycling power certain keyboards are sensitive to such transients Since your shared keyboard s power is provided by the ServSwitch wait at least three seconds after powering down the switch before powering it up again or the keyboard might not reset correctly The ServSwitch is designed to support IBM PC compatible 101 key keyboards and IBM PC keyboard scan modes 1 2 and 3 and it s designed to work with CPUs keyboards that use 5 pin DIN or 6 pin mini DIN keyboard connectors The ServSwitch might not work properly with keyboards that have proprietary keys or connectors or use proprietary keyboard scan modes 4 1 3 MONITOR NOTE No keyboard video switch can provide perfect video You will see at least a little fuzziness on your monitor no matter how close to ideal your ServSwitch system is The ServSwitch is designed to support standard VGA video including VGA monochrome and VGA page white It does not support PCs that use proprietary versions of VGA that depart from the original specifications Consult your PC s manual and if that doesn t tell you whether or not the PC uses standard VGA consult with the PC s or the video card s manufacturer The ServSwitch is also designed to support CGA video and standard color or monochrome EGA video It will support SVGA although it doesn t handle higher res
43. se signals at greater distances than others consult with the manufacturers of your CPUs about this Plug the DB25 male connector of the first CPU s CPU Adapter Cable into the lowest numbered CPU port on the ServSwitch s rear panel that isn t going to be occupied by a submaster Serv type switch Use consecutively higher numbered ports for the rest of the CPUs Plug the CPU Adapter Cable s video keyboard and mouse port connectors into the corresponding ports on the CPU The CPU should be OFF when you do this the Switch will automatically adjust to the CPU s keyboard mode when you power up the CPU CAUTION Do not attach docking stations or ThinkPad or other portable computers no matter what type or make to the ServSwitch At the time of this writing the ServSwitch does not support docking stations your ServSwitch system might not function properly if any are attached 3 2 4 PowERING UP THE SYSTEM 1 N Making sure that the connected CPUs are OFF powered down take the output cord of the ServSwitch s power supply and plug its 5 pin DIN male connector into the power jack on the rear panel of the switch Plug the power supply 115 VAC or its input cord 230 VAC into a working outlet Push the ON OFF button on the front of the ServSwitch to power up the switch Power up the connected CPUs one by one giving each one time to boot completely before turning ON the next one When the CPUs are powered up afte
44. the in position This causes the unit to begin automatic sequential scanning of connected ports If the scan does not begin immediately quickly press the button twice more so that it moves to the out position and back to the in position again Pressing the button again returning it to the out position ends the scan For normal operation the SCAN button should be out If the system doesn t function normally after you return the SCAN button to the out position perform a factory reset see Section 5 1 2 4 The Rear Panel All cable connections are made at the ServSwitch s rear panel as illustrated in Figure 2 2 and described on the next page CPU4 POWER 17VAC CT CPU1 CPU2 MONITOR KEVBOARD MOUSE RS 232 ro EA e B Figure 2 2 The rear panel of a KVM 4 to 1 ServSwitch SW722 CHAPTER 2 Introduction Panel Label Connector Description CPU X DB25 Connect the sharing computers to these ports X number with CPU Adapter Cables At the switch end from 1 to either 2 these cables have a DB25 male connector at or 4 depending on the other ends they have appropriate which model you connectors to plug into your CPU s video have keyboard and mouse ports These cables take the signals that would normally pass between the CPU s ports and the monitor keyboard and mouse and carry them between the CPUS ports and the ServSwitch instead CPU X For each CPU you p
45. time This is because when power outages occur the switch ports will return to their default keyboard mode when the power comes back on 4 3 8 SET KEYBOARD TYPEMATIC Most keyboards have an internal seven bit typematic setting which governs the way the keyboard responds when you hold a key down to force it to repeat The five low bits of this setting represent the rate at which the key repeats the two high bits represent the delay after you begin holding down the key before it begins to repeat Sometimes a keyboard s typematic setting isn t suitable for a given operator or for a given application To change the shared keyboard s typematic setting issue the Set Keyboard Typematic command Press and release the left Control Key type A followed by the desired typematic value and press ENTER The typematic value is the decimal equivalent of the binary seven bit typematic setting While the typematic setting delay bits rate bits the typematic value decimal delay value decimal rate value see Table 4 3 below and Table 4 4 on the next page For example to set the shared keyboard to register a key 16 times per second after the key has been held down for half a second typematic value 7 32 39 enter CTRL A 3 9 ENTER Table 4 3 Typematic delay Decimal Value Binary Bit Values Delay Before Key Repeats 0 OO xxxxx Y second 250 ms 32 01 pxxxxx second 500 ms 64 10 34 sec
46. your cable has probably come loose Reconnect it B The ServSwitch might have lost power for less than three seconds This can cause the keyboard to lock up Disconnect the keyboard and plug it back in C The keyboard mode that the currently selected CPU port is set for might not match the mode that the CPU on that port expects Issue the Set Keyboard Mode command to change the port s mode see Section 4 3 7 Sometimes this situation can confuse the CPU or keyboard so badly that it is necessary to reboot the CPU or to reset the keyboard by unplugging it and plugging it back in D For PS 2 type equipment if the keyboard and mouse strands of either the CPU cable or the MKM cable have been reversed plug them into the proper ports CHAPTER 5 Troubleshooting E You might be using the keyboard incorrectly Make sure to use the left Control key to start port switching commands Make sure to use the numeric keys at the top of the keyboard rather than the numeric keypad when you type in port numbers Make sure to release the Control key before you start typing in a port number Make sure you don t wait too long before you enter a port number Make sure you don t accidentally hit keys such as Shift or Alt 5 3 3 CHARACTERS THAT YOU TYPE COME UP WRONG OR MISSING The keyboard mode that the currently selected CPU port is set for might not match the mode that the CPU on that port expects See item C under Section 5 3 2 5 3 4 YOU
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