Black Box Computer Accessories ServSwitch Video Switch User Manual

THE SERVSWITCHFAMILY  
TM  
Welcome to the ServSwitch Family!  
®
Thank you for purchasing a BLACK BOX ServSwitch Brand video switch! We  
appreciate your business, and we think you’ll appreciate the many ways that your  
new video switch will save you money, time, and effort.  
*
Our ServSwitch family is all about breaking away from the traditional, expensive  
model of computer management and display. You know, the one-size-fits-all-even-if-  
it-doesn’t model that says, “One dedicated computer gets one dedicated monitor  
or 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 many monitors or user stations for the same computer?  
Why not display or access any of your computers, anywhere in the world, with  
any of your monitors or user stations?  
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  
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of computers, including a mix of IBM PC, RS/6000 , Apple Macintosh , Sun  
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Microsystems , and SGI compatibles among multiple users with different  
access levels?  
Do you have to send video from one computer to two different local monitors?  
Or do you need to send video from multiple computers to dozens of monitors  
both near and far?  
• Does your switch have to sit solidly on a worktable and use regular everyday  
cables? Or does it have to be mounted 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 ServSwitchfamily from Black Box—the one-stop answer for all your  
KVM-switching needs!  
*
This manual will tell you all about your new ServSwitch™ Brand Matrix Video  
Switch, including how to install, operate, and troubleshoot it. For an introduction  
to the Switch, see Chapter 2. The Matrix Video Switch product code covered in this  
manual is:  
ACL0404A  
1
FCC/IC STATEMENTS, EU DECLARATION OF CONFORMITY  
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 J of Part 15 of FCC rules, which are designed to  
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 présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites  
applicables aux appareils numériques de la classe A prescrites dans le Règlement sur le  
brouillage radioélectrique publié par Industrie Canada.  
EUROPEAN UNION DECLARATION OF CONFORMITY  
This equipment complies with the requirements of the European EMC directive  
89/336/EEC.  
3
SERVSWITCHBRAND MATRIX VIDEO SWITCH  
NORMAS OFICIALES MEXICANAS (NOM)  
ELECTRICAL-SAFETY STATEMENT  
INSTRUCCIONES DE SEGURIDAD  
1. Todas las instrucciones de seguridad y operación deberán ser leídas antes  
de que el aparato eléctrico sea operado.  
2. Las instrucciones de seguridad y operación deberán ser guardadas para  
referencia futura.  
3. Todas las advertencias en el aparato eléctrico y en sus instrucciones de  
operación deben ser respetadas.  
4. Todas las instrucciones de operación y uso deben ser seguidas.  
5. El aparato eléctrico no deberá ser usado cerca del agua—por ejemplo, cerca  
de la tina de baño, lavabo, sótano mojado o cerca de una alberca, etc.  
6. El aparato eléctrico debe ser usado únicamente con carritos o pedestales que  
sean recomendados por el fabricante.  
7. El aparato eléctrico debe ser montado a la pared o al techo sólo como sea  
recomendado por el fabricante.  
8. Servicio—El usuario no debe intentar dar servicio al equipo eléctrico más allá  
a lo descrito en las instrucciones de operación. Todo otro servicio deberá ser  
referido a personal de servicio calificado.  
9. El aparato eléctrico debe ser situado de tal manera que su posición no  
interfiera su uso. La colocación del aparato eléctrico sobre una cama, sofá,  
alfombra o superficie similar puede bloquea la ventilación, no se debe colocar  
en libreros o gabinetes que impidan el flujo de aire por los orificios de  
ventilación.  
10. El equipo eléctrico deber ser situado fuera del alcance de fuentes de calor  
como radiadores, registros de calor, estufas u otros aparatos (incluyendo  
amplificadores) que producen calor.  
11. El aparato eléctrico deberá ser connectado a una fuente de poder sólo del  
tipo descrito en el instructivo de operación, o como se indique en el aparato.  
4
NOM STATEMENT  
12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización  
del equipo no sea eliminada.  
13. Los cables de la fuente de poder deben ser guiados de tal manera que no  
sean pisados ni pellizcados por objetos colocados sobre o contra ellos,  
poniendo particular atención a los contactos y receptáculos donde salen del  
aparato.  
14. El equipo eléctrico debe ser limpiado únicamente de acuerdo a las  
recomendaciones del fabricante.  
15. En caso de existir, una antena externa deberá ser localizada lejos de las lineas  
de energia.  
16. El cable de corriente deberá 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 ventilación.  
18. Servicio por personal calificado deberá ser provisto cuando:  
A: El cable de poder o el contacto ha sido dañado; u  
B: Objectos han caído o líquido 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  
desempeño; o  
E: El aparato ha sido tirado o su cubierta ha sido dañada.  
5
SERVSWITCHBRAND MATRIX VIDEO SWITCH  
Contents  
Chapter  
Page  
1. Specifications ............................................................................................. 7  
2. Introduction ............................................................................................... 9  
3. Installation ................................................................................................ 10  
4. Operation ................................................................................................. 12  
4.1 The Switch’s LEDs ............................................................................ 12  
4.2 Switching Manually With the Keypad .............................................. 13  
4.3 Switching With (or Through) a Serial Device .................................. 14  
5. Troubleshooting ...................................................................................... 15  
5.1 Calling Black Box .............................................................................. 15  
5.2 Shipping and Packaging ................................................................... 15  
Appendix - Advanced Features *** Scan Mode *** .................... 16  
6
CHAPTER 1: Specifications  
1. Specifications  
Compliance —  
Standards —  
Interfaces —  
CE; FCC Part 15 Subpart J Class A, IC Class/classe A  
VGA, SVGA, XGA, or XGA-2 video  
Video: VGA;  
Serial: EIA/TIA RS-232, pinned according to TIA-574,  
DTE  
Supported  
Video Types —  
RGBHV (VGA, SVGA, XGA, or XGA-2), RGBS, or  
RGsB (“sync on green”)  
Resolution and  
Refresh Rate —  
Up to 1600 x 1280 noninterlaced at up to 85 Hz  
Video Coupling — DC  
Video Level —  
Video Gain —  
Supported Serial  
0.7 volts peak-to-peak  
1-to-1 (buffered)  
Characteristics — Transmission protocol: Asynchronous;  
Data rate: 1200 bps, fixed;  
Data format: 8 data bits; no parity; and 1 or more stop  
bits (fixed)  
Maximum  
Distance —  
Up to 150 ft. (45.7 m) of total cable length from attached  
CPU/input device to attached monitor/output device  
User Controls —  
Indicators —  
(1) Front-mounted rocker switch for power;  
Switching commands (ASCII “make” and “break” codes  
from PC or included serial keypad)  
(16) Front-mounted LEDs to show video connections  
7
SERVSWITCHBRAND MATRIX VIDEO SWITCH  
Connectors —  
On Switch itself:  
(8) HD15 female for video: (4) to CPUs’ video ports  
(or other sources), (4) to monitors (or other  
destinations);  
(1) DB9 male for serial;  
(1) 5-pin DIN female for power;  
On power-supply transformer:  
(1) IEC male inlet for power  
Maximum  
Altitude —  
10,000 ft. (3048 m)  
Temperature  
Tolerance —  
Operating: 32 to 122˚F (0 to 50˚C);  
Storage: –40 to +185˚F (–40 to +85˚C)  
Humidity  
Tolerance —  
Up to 95% noncondensing  
Steel  
Enclosure —  
MTBF —  
300,000 hours (calculated estimate)  
Power —  
From utility-power (mains) outlet, through included  
detachable output cord and external universal power  
supply:  
Input: 100 to 250 VAC at 50 to 60 Hz (autosensing);  
Output: +5 VDC at 1 A, +12 VDC at 0.5 A, and –12 VDC  
at 0.5 A;  
Consumption: 5 VA (5 watts) maximum  
Size —  
2.3"H x 8.3"W x 5.3"D (5.9 x 21.1 x 13.5 cm)  
Weight —  
Net:  
Switch itself: 2.2 lb. (1 kg);  
Keypad: 1 lb. (0.5 kg);  
Power supply: 3 lb. (1.4 kg);  
Shipping: 7 lb. (3.2 kg)  
8
CHAPTER 2: Introduction  
2. Introduction  
The ServSwitch Brand Matrix Video Switch is an ideal tool for sharing and/or  
switching between the output of as many as four video sources (such as PCs), in  
order to display or capture that output at up to four video destinations (such as  
monitors).Once you attach all your devices, you can hook the Switch to the  
included keypad for manual control, or to a PC for software-controlled sensing  
and switching.  
The Switch’s features include:  
• With its large bandwidth, it can handle even very high resolutions and refresh  
rates, up to 1600 x 1280 pixels at up to 85 Hz.  
• It includes a serial keypad, so it’s ready to do manual switching almost right  
out of the box (you do have to attach the keypad to the Switch first).  
• Because it has a universal power supply, you can plug it in almost anywhere if  
you have the right input cord. (And it is small and light enough to take almost  
anywhere!)  
• It’s primarily designed to carry VGA/SVGA video, but it can handle separate  
horizontal and vertical sync, composite sync, and sync on green, so with the  
right kinds of cables or adapters it can accept all sorts of video from all sorts  
of devices.  
• All of its input and output signals are buffered, so you’ll get the sharpest  
possible images.  
• It can drive video signals as far as 150 ft. (45 m) end-to-end, so it’s ideal for use  
in auditoriums, conference halls, and similar spaces.  
• You can use it in many types of remote or automated systems, because it can be  
controlled from most RS-232 source devices.  
• Each of its outputs can be blanked, so you don’t have to worry about people  
seeing things you don’t want them to.  
• Its front-panel LEDs show you right away which video inputs are going to  
which outputs.  
• To top it off, it can be operated by pressing a couple of buttons, so anybody  
can use it without having to be extensively trained.  
9
SERVSWITCHBRAND MATRIX VIDEO SWITCH  
3. Installation  
To set up your ServSwitch Brand Matrix Video Switch system, take these steps:  
1. Making sure that the Switch is powered off, find its input ports. (These are  
the top row of HD15 connectors on its rear panel, shown in Figure 3-1,  
labeled “CPU 1” through “CPU 4”.) Run cabling from these ports to the  
video-output ports of the PC CPUs or other devices that will be providing the  
Switch’s video input.  
If all of these input devices are transmitting VGA/SVGA/XGA-type  
video signals on HD15 female connectors, you can use standard VGA video-  
extension cables such as our product code EVNPS05-MM. Keep in mind that  
the length of any of these cables plus the length of any of your monitor/  
output cables (see step 2) should not be more more than 150 ft. (45 m).  
If any of your input devices transmit some other type of video signal  
and/or use some other type of video connector, you might need special  
cables or adapters; call Black Box Technical Support.  
Figure 3-1. The Switch’s rear-panel connectors.  
2. The Switch’s output ports are the bottom row of HD15 female connectors  
labeled with numbered monitor icons. If all of your output devices are  
standard VGA or multisync monitors with HD15 male connectors on their  
video cables, you can plug them directly into these ports (if they’ll be placed  
nearby) or run video-extension cables to them such as our product code  
EVNPS05-MF (if they’ll be some distance away). Keep in mind that the length  
of any of these cables plus the length of any of your CPU/input cables (see  
step 1) should not be more more than 150 ft. (45 m).  
If any of your output devices are designed to receive a non-VGA video  
signal and/or use a different type of video connector, you might need special  
cables or adapters; call Black Box Technical Support.  
10  
CHAPTER 3: Installation  
3. If you’ll be using the included keypad to control the Switch, plug it into the  
Switch’s DB9 male RS-232 port. If you’ll be using a PC (or some other RS-232  
DTE device with a DB9 male serial port) to control the Switch, run DB9 null-  
modem cable such as our product code EYN257H-FF from the Switch to that  
device. If you’ll be using an RS-232 device that’s not a DTE or has some other  
type of serial connector, call Black Box Technical Support.  
4. Plug the output cord of the Switch’s power supply into the Switch’s 5-pin DIN  
female power inlet. Plug one end of the power supply’s input cord into the  
transformer’s IEC 320 male inlet; plug the other end of the input cord into a  
working AC outlet.  
5. Turn on the Switch and all attached devices. The system should power up in  
its default state, with all of the Switch’s outputs displaying input #1.  
If it does, the system should be ready for continuous operation. If it  
doesn’t, check the front-panel LEDs to make sure the Switch is ON; check  
your devices and make sure they’re ON; and check your cabling and make  
sure it’s all properly connected. If everything seems like it should work but  
the system still doesn’t, call Black Box Technical Support.  
11  
SERVSWITCHBRAND MATRIX VIDEO SWITCH  
4. Operation  
4.1 The Switch’s LEDs  
The LEDs on the ServSwitch Brand Matrix Video Switch’s front panel, shown  
in Figure 4-1, indicate which of the Switch’s outputs are displaying the video from  
which inputs, and which outputs have been blanked and aren’t showing anything.  
The inputs are the numbered rows labeled “Video Source”; the outputs are the  
columns labeled with numbered monitor icons. For output #2, for example, you’ll  
be able to look at the column of four LEDs labeled with monitor icon 2: If the  
bottom LED is lit, output #2 is receiving video from input #4, and so on. If none  
of the LEDs are lit, output #2 has been blanked. See Section 4.2.  
Figure 4-1. The Switch’s front-panel LEDs.  
12  
CHAPTER 4: Operation  
4.2 Switching Manually With the Keypad  
To switch a given output to display a given input (or to blank an output), press  
“[out][.][in][Enter]” on the Switch’s keypad, where:  
• [out] is the number of the output channel (1 through 4, or “*” for all outputs);  
• [.] is the keypad’s decimal-point/Delete key;  
• [in] is the number of the input channel (1 through 4, or 0 to blank the  
output); and  
• [Enter] is the keypad’s Enter key.  
For example, to display input #1 on output #3, press [3][.][1][Enter]. To blank  
output #2 so that it doesn’t display anything, press [2][.][0][Enter]. To send  
input #4’s video to all outputs, press [*][.][4][Enter]. Remember that any number  
of outputs can be switched to display the same input, but no output can be  
switched to display more than one input at the same time.  
After you press each key, you have five seconds to press the next one; if you wait  
longer than that, the switching command is aborted. If at any time you press an  
invalid key or a key that the Switch isn’t expecting, the command is also aborted.  
For example, if you press [4], and then [.], but then press [5], or [.] again, or any  
unused key, the command in progress is discarded and the Switch resets itself.  
Figure 4-2 shows a block diagram of the Matrix Video Switch if output #1 is  
switched to input #2, outputs #2 and #3 are switched to input #1, and output #4 is  
switched to input #3. (The “/ 5”s represent the five video signals on either side.)  
Matrix Video Switch  
Output  
Buffers  
Input  
Buffers  
5
5
5
5
5
Input #1  
Output #1  
Output #2  
5
Input #2  
(RGBHV  
Signals)  
(RGBHV  
Signals)  
5
Output #3  
Output #4  
Input #3  
5
Input #4  
Figure 4-2. A functional block diagram of the Switch.  
13  
SERVSWITCHBRAND MATRIX VIDEO SWITCH  
4.3 Switching With (or Through) a Serial Device  
To control the Matrix Video Switch through an attached PC or other serial device,  
the serial device has to be able to communicate with the Switch. (You’ll need to set  
the device to 1200 bps, 8 data bits, and no parity; the number of stop bits is irrelevant.)  
Beyond that, the serial device needs to be able to mimic the Switch’s keypad  
commands. (See Section 4.2 for a description of the command syntax.) When you  
press a button on the keypad, a “make” code is sent to the Switch; when you release  
a button, a “break” code is sent to the Switch. (If a button is held down, “make”  
codes are sent repeatedly, but the Switch ignores all of them except the first one.)  
Here are the values you need to send to the Switch to get it to change channels,  
listed as both ASCII characters and hexadecimal values:  
Keypad  
Button  
Make Code,  
ASCII (hex)  
Break Code,  
ASCII (hex)  
[1]  
[2]  
` (60)  
a (61)  
b (62)  
c (63)  
o (6f)  
k (6b)  
n (6e)  
t (74)  
@ (40)  
A (41)  
B (42)  
C (43)  
O (4f)  
K (4b)  
N (4e)  
T (54)  
[3]  
[4]  
[0]  
[*]  
[.]  
[Enter]  
The same rules that govern keypad switching apply here: Until the switching  
command is complete, each code must be followed by another within five seconds,  
or the command will be aborted and the Switch will reset itself. Any invalid or  
unexpected code will also cause the command to be aborted and the Switch to  
reset itself.  
There is a special set of codes that can be sent by (or through) the serial device  
that will cause the Switch to respond with status values; these can be very useful in  
automated systems:  
• Send the Switch an ASCII “0” (zero, 30 hex) to have it return the revision level  
of its firmware: an ASCII “1” (31 hex), for instance, for firmware version 1.  
• Send the Switch an ASCII “1”, “2”, “3”, or “4” (31 hex through 34 hex  
respectively) to have it return the status of the corresponding output channel:  
It will reply with ASCII “1”, “2”, “3”, or “4” (31 hex through 34 hex) to indicate  
that that output is switched to input #1, 2, 3, or 4 respectively, or it will reply  
with ASCII “0” (zero, 30 hex) to indicate that that output is blanked.  
14  
CHAPTER 5: Troubleshooting  
5. Troubleshooting  
5.1 Calling Black Box  
If you determine that your ServSwitch™ Brand Matrix Video Switch is  
malfunctioning, do not attempt to alter or repair the unit. It contains no user-  
serviceable parts. Contact Black Box Technical Support at 724-746-5500.  
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—that is, what type of cable, makes  
and models of computers (input devices), makes and models of monitor  
(output devices), etc.;  
• any particular application that, when used, appears to create the problem  
or make it worse; and  
• the results of any testing you’ve already done.  
5.2 Shipping and Packaging  
If you need to transport or ship your Switch:  
• Package it carefully. We recommend that you use the original container.  
• Before you ship the unit back to Black Box for repair or return, contact us  
to get a Return Authorization (RA) number.  
15  
ADDENDUM – Advanced Features òòòò Scan Mode  
The ACL0404A has a “Scan Mode” whereby each output automatically  
cycles through and displays all inputs at a customer specified rate.  
Activating the Scan Mode  
There are 2 types of scan modes: individual scan and all scan. To enter  
individual scan mode, a simple key sequence is entered on the keypad  
[ Output Channel that you want to scan]. [/][Enter]  
For example to scan output #1 press: 1.[/]e  
This will begin scanning output 1 (it cycles through the inputs one at a time).  
Each of the 4 output channels can be scanning independently of one another.  
This means you can start scanning on one channel and then at some time  
later, start scanning on another channel. Both channels will now be scanning  
independent of one another. All scanning channels will scan at the same rate.  
Enter all scan mode by key sequence:  
[*].[/] [Enter]  
This will start with output 1 on input 1, output 2 on input 2, output 3 on input  
3 and output 4 on input 4.  
Exiting Scan Mode  
To exit the scan mode hit the Esc key on the keypad and this will cancel all  
scanning whether it be individual scan mode or all scan mode. If the all scan  
command has been issued, then scanning can be canceled by selecting any  
input from any output via the keypad or by selecting an individual scan.  
When individual scan mode is running on a channel, the way to cancel that  
specific channel’s scan mode is to select an input for that channel from the  
keypad.  
Changing the Scan Timing  
The time between transitions in scan mode is user definable (factory default  
is 10 seconds). Connect the ACL0404A to a PC using a crossover DB9 serial  
cable. Start up Hyper Terminal with the settings 1200, 8, none, 1, none. To  
program the scan time, press PPP followed by the A through G  
corresponding to periods shown below.  
A 5 seconds  
B 10 seconds  
C 1 minute  
D 2 minutes  
E 3 minutes  
F 4 minutes  
G 5 minutes  
16  

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