ServSwitch Universal Extender

Transcription

1 ACU8000A UMA1178 Rev NC ServSwitch Universal Extender Extend dual-head VGA video, stereo audio, RS-232 and up to three independent USB ports up to 400 feet (125 m) away on CATx cable.

2 TRADEMARKS USED IN THIS MANUAL BLACK BOX and its Double Diamond logo trademark of BB Technologies, Inc. are registered trademarks, and ServSwitch is a Any other trademarks mentioned in this manual are acknowledged to be the property of the trademark owners. We re here to help! If you have any questions about your application or our products, contact Black Box Tech Support at or go to blackbox.com and click on Talk to Black Box. You ll be live with one of our technical experts in less than 20 seconds blackbox.com 1

3 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 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 classe A prescrites dans le Règlement sur le brouillage radioélectrique publié par Industrie Canada blackbox.com 2

4 INSTRUCCIONES DE SEGURIDAD Normas Oficiales Mexicanas (NOM) Electrical Safety Statement 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. 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 blackbox.com 3

5 Contents 1. SPECIFICATIONS OVERVIEW INTRODUCTION FEATURES WHAT S INCLUDED HARDWARE DESCRIPTION INSTALLATION CONNECTING THE SENDER UNIT TO THE PC CONNECTING THE SENDER UNIT TO LOCAL OUTPUTS CONNECTING THE SENDER UNIT TO THE RECEIVER UNIT CONNECTING THE RECEIVER UNIT OUTPUTS CONFIGURATION & OPERATION SENDER UNIT FRONT-PANEL CONTROLS AND INDICATORS RECEIVER UNIT FRONT-PANEL CONTROLS AND INDICATORS VIDEO CALIBRATION AUDIO ADJUSTMENT RECEIVER COVER TROUBLESHOOTING CALLING BLACK BOX SHIPPING AND PACKAGING APPENDIX blackbox.com 4

6 1. Specifications Cable Required Enclosure MTBF Resolutions USB Support Video Inputs Video Levels Up to 400 feet using CAT5e UTP cable; Up to 450 feet using CAT6 UTP cable Steel 90,000 hours (calculated estimate) PC resolutions up to 1920 x 60 Hz High-Speed (12 Mbps) devices, Low-Speed (1.5 Mbps) devices PC outputs (VGA to UXGA) 0 to 0.7 v p-p Temperature Tolerance Operating: +32 to +122 degf (0 to +50 degc); Storage: -40 to +185 degf (-40 to + 85 degc) Power Size Sender: Receiver Weight Sender Receiver VAC, 50/60 Hz 1.5 H x 19 W x 5.1 D (3.8 x 48.2 x 12.9 cm); 1.75 H x 14 W x 4.1 D (4.5 x 35.6 x 10.4 cm) 4 lb. (1.8 kg); 4 lb. (1.8 kg) blackbox.com 5

7 2. Overview 2.1 Introduction The ServSwitch Universal Extender (ACU8000A) extends dual-head PC video, stereo audio (amplified or line level), RS-232, and up to three USB ports up to 400 feet away on CAT5e or CAT6 cables. The ACU8000A includes a rack mountable sender unit plus a wall mountable receiver (and I/O hood cover), packaged together. The Receiver (Remote) Unit is a peripheral extender with two direct USB ports (DR1 and DR2). The Sender (Local) Unit is a peripheral extender with two direct USB ports (DR1 and DR2). A block diagram of the system is shown in Appendix A 2.2 Features Eliminates the need for a utility box (The receiver includes an I/O hood cover that goes over all the connectors with tie-down provisions for a strain relief.) Does not require external power supply. It has a built-in supply with a standard 110~240 VAC IEC320 jack. 2 Direct USB ports (DR1 and DR2) Has a DB15 connector for audio input and loop output at the sender as well as a DB15 output at the receiver. The units are perfect for PCs that have amplified audio output on a DB15 male connector (no special cables are needed other than the included DB15 M/F cable) Receiver features a DB15 male output with amplified output to drive passive speakers directly, as well as a line-level 3.5-mm jack for powered speakers Provides built-in video skew correction on both video channels. This corrects the lack of RGB convergence when long Cat6 cables are used. Eliminates the need to use special low-skew UTP cables for long runs. Built-in Test pattern generator for long cable compensation (High Frequency Gain) and Skew correction. Features a built-in extended display ID (EDID), which enables the PC to detect LCD s even if none is connected at the sender or the receiver. Supports Local USB outputs at the sender to connect the local keyboard and mouse. Offers 4 general-purpose USB ports at the remote unit plus two direct USB ports Supports hot-unplug and hot-plug of USB Peripherals (General Purpose USB ports, as well as DR1 and DR2) 2.3 What s included Your ACU8000A package should contain the following items. If anything is missing or damaged, contact Black Box Technical Support at or info@blackbox.com. (1) Rack Mountable Sender Unit (1) Wall Mountable Receiver Unit (1) I/O hood cover with mounting hardware (3) 6-ft. (1.8m) USB Type A male to Type B male cables (2) 6-ft. (1.8m) VGA cables (2) 6-ft. (1.8 m) power cable (1) DB15 to 3.5-mm connector male/male cable This user s manual blackbox.com 6

8 2.4 Hardware Description Sender Unit Figure 2.1 shows the sender unit s front panel. Table 2-1 describes its components TABLE 2-1 Number Component Description 1 Host and Link LED s (STD, DR1, DR2) Illuminated when communication is established between sender and host or sender and receiver 2 Power LED Lights when sender is powered on 3 Video Adjust Switch Figure 2.1 Sender unit s front panel Selects normal RUN mode or CAL mode for display of the video test pattern Figure 2.2 Sender unit s back panel TABLE 2-2 Number Component Description 4 HD15 connector 5 HD15 connector VGA A IN: Along with VGA B IN, these are the PC s video input signals (VGA through UXGA) with local loop outputs at the sender. They are extended to a remote unit through RJ-45 Port A and Port B. High-frequency compensation is incorporated at the receiver to provide a brilliant image for these video signals. VGA B IN: Along with VGA A IN, these are the PC s video input signals (VGA through UXGA) with local loop outputs at the sender. They are extended to a remote unit through RJ-45 Port A and Port B. High-frequency compensation is incorporated at the receiver to provide a brilliant image for these video signals blackbox.com 7

9 TABLE 2-2 Number Component Description 6 DB15 connector 7 DB9 connector RS-232 input Audio input: Audio: DB15 connector (with 2 rows of pins) for audio input and a loop output at the sender. The audio is extended to a remote receiver that has both line as well as powered outputs (for driving passive speakers). The DB15 audio I/O not only allows Interface with line-level 3.5-mm mini stereo audio sources (using adapter cable available from Black Box), it also provides a more reliable and secure means for the audio connection with its gold-plated D-Sub connector with jack screws. The audio input level supports a wide range of standards; it can be amplified (for driving passive speakers), +4dBu (Pro-Audio), or - 10dBv (consumer line-level). 8 USB Type B connector 9 USB Type B connector DR 1 input: Along with DR2, these are two Direct extension USB ports. The corresponding USB port on the PC is directly extended to a remote receiver with no hubs or other functions in the path. The PC s USB port that is extended via DR1 or DR2 behaves exactly as if it were connected directly to the target device at the remote. These Direct USB port extensions are perfect for high-data-rate devices, such as video cameras, storage media, printers, and chart recorders. They do not support low-speed human interface devices, such as keyboards or mice. Having a dedicated path from the target device to the PC ensures full channel bandwidth availability in the interface (as opposed to several devices sharing one port on the PC via a hub). USB STD input: This is a general-purpose USB port, which goes through a hub in the sender and provides two USB local output ports. It is also extended to the remote receiver, where another hub provides the user with four USB ports. These general-purpose USB ports are labeled as KBRD 1, MOUSE 2, AUX 3, and AUX 4. They support any type of low-speed or high-speed USB devices. AUX 3 and AUX 4 are typically used for touch screen displays, but support all other USB devices as well. 10 USB Type A connector USB Local 1 output 11 USB Type A connector USB Local 2 output 12 HD15 connector Local VGA A output 13 HD15 connector Local VGA B output blackbox.com 8

10 TABLE 2-2 Number Component Description 14 DB15 connector Audio output 15 USB Type B DR 2 input: This is a Direct extension USB port. The corresponding USB port on the PC is directly extended to a remote receiver with no hubs or other functions in the path. The PC s USB port that is extended via DR1 or DR2 behaves exactly as if it were connected directly to the target device at the remote. These Direct USB port extensions are perfect for high-data-rate devices, such as video cameras, storage media, printers, and chart recorders. They do not support low-speed human interface devices, such as keyboards or mice. Having a dedicated path from the target device to the PC ensures full channel bandwidth availability in the interface (as opposed to several devices sharing one port on the PC via a hub). 16 RJ-45 connector Port D: DR2. Omit if DR2 not required 17 RJ-45 connector 18 RJ-45 connector 19 RJ-45 connector Port C: General purpose USB and DR1 USB. Required in all applications Port B: Video B, RS-232: May omit if Video B or RS- 232 extension is not needed. Port A: Video A, Audio, Calibration Switch State: Required in all applications 20 3-prong connector Power VAC, 50/60 Hz blackbox.com 9

11 2.4.2 Receiver Unit Figure 2.3 shows the receiver unit s front panel. Table 2-3 describes its components TABLE 2-3 Number Component Description 1,2,3 (Top Row) 1,2,3 (Bottom Row) LED s Channel Select Push Button Volume Control Up/Down Push Buttons Figure 2.3 Receiver unit s front panel Link LED s light when communication between sender and receiver is established. Data LED s light when valid data is being sent form the PC to the sender. Select A or B for skew compensation Adjust Volume Toggle up/down to adjust skew 7 Red LED Lights when adjusting RED skew compensation 8 Green LED Lights when adjusting GREEN skew compensation 9 Blue LED Lights when adjusting BLUE skew compensation 10 Select Button Use to select RGB skew compensation 11 Power LED Lights when power is on blackbox.com 10

12 Figure 2.4 shows the receiver unit s back panel. Table 2-4 describes its components Figure 2.4 Receiver unit s back panel TABLE 2-3 Number Component Description HD15 connector Video output A 13 HD15 connector Video output B 14 DB15 connector Power Audio out mm connector Line Audio out 16 DB9 connector RS RJ-45 connector Port D UTP Input 18 RJ-45 connector Port C UTP Input 19 RJ-45 connector Port B UTP Input 20 RJ-45 connector Port A UTP Input 21 3-prong connector Power VAC 22 USB Type A female connector Links to keyboard 23 USB Type A female connector Links to mouse 24 USB Type A female connector Links to auxiliary USB device 25 USB Type A female connector Links to auxiliary USB device 26 USB Type A female connector Links to DR1 27 USB Type A female connector Links to DR blackbox.com 11

13 2.4.3 User I/O Connector Descriptions The sender unit has ports for connection to the PC source and features local outputs for both video ports, audio signals (with amplified audio pass-through), and a general-purpose USB port (for connection to local keyboard or pointing devices). The sender unit also has an RS- 232 port for bidirectional extension of RS-232 data. Both the sender unit and the receiver unit have built-in power supplies with standard IEC320 jacks (no external power bricks). The sender unit includes 6-foot (1.8-m) cables for connection to the PC (3x USB, 2x VGA, 1x DB15-3.5mm audio). The sender unit also includes a rack mountable front panel. The receiver unit includes an I/O hood cover that covers all the connections, eliminating the need for a separate utility box. Both the sender and the receiver have DB15 output connectors for the sound so that standard 4- or 8-ohm passive speakers can be directly connected at both ends. 2.5 CATx Cable Requirements Depending on the model or application, from 2 to 4 UTP (CATx) cables are needed to connect the sender unit to the receiver unit. We recommend that you use CAT6 UTP because it offers maximum extension capabilities. The unit is capable of extending all the signals to more than 400 feet (approximately 450 feet using CAT6 cables). Zero or low-skew cables are not needed since the device incorporates skew correction on both video channels blackbox.com 12

14 Figure 3-3 ServSwitch Universal Extender 3. Installation 3.1 Connecting the Sender Unit to the PC Using the supplied cables, connect the PCs VGA outputs to the sender unit s VGA A IN and VGA B IN connectors. See Figure 3-1. VGA A Input VGA B Input Audio Input Figure 3-1 Connect the audio source to the AUDIO connector using the included DB15 male-to-female cable. Figure 3-2 shows the sender unit s audio input connector and pass through audio output. When connecting to a 3.5-mm source, use the included DB15 to 3.5-mm source cable. As shown in Figure 3-2, the unit only uses and passes through the amplified audio pins of the DB15 input connector. The audio input pins and corresponding return pins are kept isolated in the sender unit (high impedance). Speaker cable: DB15 to 3.5-mm connector pin out Figure 3-2 Audio/Speaker connections at Sender If a serial communication is needed, connect a PC s serial port to the RS-232, DB9 female connector. Usually a straight-thru DB9 M/F cable is required (not supplied, order Black Box part number EDN12H-0005-MF separately) blackbox.com 13

15 3.2 Connecting the Sender Unit to Local Outputs The sender has buffered outputs for connection of two LCD s, a passive speaker, and two USB devices (commonly keyboard and mouse or a KVM Switch). VGA A Local Output VGA B Local Output Figure 3-4 Local VGA A and VGA B output connectors on the sender s back panel 3.3 Connecting the Sender Unit to the Receiver Unit The sender unit connects to the receiver unit via four UTP cables. Figure 3-5 Sender RJ-45 outputs to receiver Port A of the UTP carries VGA A and AUDIO signals. Port B of the UTP carries VGA B and Bi-directional RS232 signals. Port C of the UTP carries the Standard (STD) USB and the Direct USB port DR1. Port D of the UTP carries the Direct USB port DR blackbox.com 14

16 3.4 Connecting the Receiver Unit Outputs Video A Video B Power Audio Out Line Audio Out Figure 3.6 Outputs on the receiver s rear panel Connect display devices such as two LCD's to the VIDEO A and VIDEO B connectors of the receiver unit. Connect a LINE AUDIO OUT from the receiver unit to any standard PC external speakers (powered) using male-to-male 3.5-mm audio patch cable (Black Box part number EJ , ordered separately). If an amplified audio output level is desired, connect the receiver s PWR AUDIO OUT connector to the desired device. The pin diagram of the receiver s PWR AUDIO OUT is shown below in figure 3-7. Figure 3-7 Receiver Audio Output Connector, DB15 female blackbox.com 15

17 4. Configuration & Operation 4.1 Sender Unit Front-Panel Controls and Indicators Figure 4-1 Controls and indicators on the sender unit s front panel Table 4-1 Indicators on the sender unit s front panel Indicator Name Description Host LED STD Host LED DR1 Host LED DR2 Link LED STD Link LED DR1 Link LED DR2 Lights when STD communications is established between the sender unit and host Lights when DR1 communications is established between the sender unit and host Lights when DR2 communications is established between the sender unit and host Lights when STD communication link is established between the receiver unit and host Lights when DR1 communication link is established between the receiver unit and host. Lights when DR2 communication link is established between the receiver unit and host Keep the VIDEO ADJUST switch in RUN mode for normal operation. Set it to CAL (calibrate) mode to adjust the video at the remote unit per the following descriptions blackbox.com 16

18 4.2 Receiver Unit Front-Panel Controls and Indicators Channel Select Button Up & Down Buttons Select Button Figure 4-2 Controls and indicators on the receiver unit s front panel The receiver unit can be operated in two different modes: RUN mode and CAL (calibrate) mode. In the run-mode, all LEDs and buttons for video adjust are off. In CAL mode, the unit should turn on the specific video adjust LEDs to indicate the previous selection in this mode, such as channel selection A or B, HF gain, or align mode. There are two ways to get into the calibrate-mode to adjust the video. The first and recommended method is to use the VIDEO ADJUST switch on the sender unit and set it to CAL, which puts the receiver unit in the calibrate mode and also activates a test pattern. The receiver unit stays in this calibrate mode until the VIDEO ADJUST switch is set back to RUN. The other way to enter the calibrate mode is to hold down the SELECT button for three seconds at the receiver unit; in this case, the test pattern will not be displayed as output. If there is no user activity on the front panel for one minute, the receiver unit will time out and switch back to the RUN mode. NOTE: You can use the VIDEO ADJUST switch on the sender unit to quickly put the receiver unit in the calibrate-mode (Video Adjust LEDs on the receiver unit front panel are lit). The sender unit also generates a test pattern that is specifically designed for Video Calibration. The CHANNEL SELECT button is used to select either video A or video B input source to adjust. The setting for Ch A and B are independent and hence the procedure must be repeated for each of the two video screens. The UP and DN buttons are used to adjust either the high-frequency compensation (HF GAIN) or the red, green, and blue signal alignment (ALIGN). Press the UP or DN button once to increase or decrease the gain level. When holding down either the UP or DN button, the unit will automatically increase or decrease the gain level until it reaches the maximum or the minimum gain level setting. The RED, GRN, and BLU LEDs will flash when the unit s gain level is at minimum or maximum. The UP and DN buttons can also be used to reset the HF Gain or the signal alignment. Just press them simultaneously. The SELECT button is used to select either the signal alignment (ALIGN) or the highfrequency gain (HF GAIN) adjustment blackbox.com 17

19 4.3 Video Calibration ServSwitch Universal Extender Figures 4-3 and 4-4 show how you can adjust an image to the proper resolution by using the receiver unit s front-panel controls. Figure 4-3 Test pattern for HF gain and skew adjustments Select the video channel that you are going to adjust. Start by adjusting the HF gain (all three LEDs on the receiver unit lit). It s best to start at the minimum compensation setting. To do this, either press the Down button repeatedly until the LEDs blink (indicates you are at min), or simply press both Up and Down buttons simultaneously. If the cable is long, the black-and-white horizontal lines tend to appear smeared (black smears as black, and white as white). Press the Up button repeatedly while paying particular attention after each key press to the area just to the right of the horizontal lines. Your goal is to make the transition between the horizontal black and white lines and the 50% gray background have as little smear as possible. Do not over adjust. If you do, some smear comes back, particularly near the transition but in reverse sense (white lines smear into gray as black and vice versa). The following images depict the adjustment results as seen on the screen: blackbox.com 18

20 Figure 4-4 HF gain adjustment (zoomed view) Once you have adjusted the HF gain, press the select button to cycle through the red, green, and blue colors and use the Up and Down buttons to align the colors vertically blackbox.com 19

21 4.4 Audio Adjustment ServSwitch Universal Extender The PWR AUDIO output audio volume level can be manually adjusted by using a small flat screwdriver to turn a recessed pot clockwise for louder or counter-clockwise for softer. You cannot turn the volume all the way down. This means that even if the pot is turned fully counterclockwise, you still have some audio output. 4.5 Receiver Cover In Figure 4-5, the location of holes where the cover screws to the receiver unit are shown with little arrows. Use four screws on the top and two screws on the bottom (hardware included). Figure 4-5. Locations of attachment holes for screws You can use the slotted holes at either end of the unit to zip-tie the cables in place. Once the cover is firmly attached and cables zip-tied in place, you can screw the entire assembly to a suitable base using the L flanges on either side of the unit. Make sure that the front panel is accessible for skew and or video adjustments as needed. Figure 4-6. Cables can enter and leave from either end blackbox.com 20

22 6. Troubleshooting We recommend that all products be assembled, configured and tested prior to the final installation to eliminate the possibility of problems on site. Make sure all connections to the PC and peripheral equipment are solid. Reboot the PC if any of the connections were loose because this may have caused the PC to lock up. If the problem is related to video, check the function and calibration by placing the unit in Calibration mode using the switch on the sender unit. If the image on the display is not centered properly, use the LCD s on screen display to do an Auto Adjust Image. If you cannot troubleshoot the setup, note all pertinent symptoms and make a list of any other equipment used in the setup. WARNING: The units contain hazardous voltages. There are no user-serviceable parts inside. Do not open or try to repair the unit yourself. There is no customer-repairable item in the unit, and you will void the warranty. Contact Black Box Technical Support at or info@blackbox.com. If there is a problem with USB devices, check the state of the LED s on the front panel of the each unit. These LED s pertain to USB links. The General purpose USB (STD) link light should be on if proper connection is made between the sender and the receiver units. The Data LED lights if connection to PC is made and a device is plugged into one of the STD USB ports on the receiver unit. The DR1 and DR2 LEDs function when the sender unit is connected to the PC and the receiver unit at the remote end is connected to a USB device (such as a printer). Link and data LEDs work together. If connection to the PC of DR1 or DR2 is verified, but the Link and Data LEDs are off, unplug the corresponding device from the receiver unit, wait five seconds and plug it back in. Check the RJ-45 port connections (A to A, B to B, etc.) to make sure they are not crossed, loose, or disconnected. Use the following list to narrow your search depending on device you are having trouble with Port A of the UTP carries VGA A and AUDIO signals Port B of the UTP carries VGA B and Bi-directional RS232 signals Port C of the UTP carries the Standard (STD) USB and the Direct USB port DR1. Port D of the UTP carries the Direct USB port DR blackbox.com 21

23 6.1 Calling Black Box If you determine that your ServSwitch Universal Extender is malfunctioning, do not attempt to repair the unit. There are no user serviceable parts inside the unit. Opening the unit will void the warranty. Contact the Black Box Technical Support department at to obtain an RMA (Return Authorization) number. 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. 6.3 Shipping and Packaging If you need to transport or ship your device: Package it carefully. We recommend that you use the original container if possible. Before you ship the unit back to Black Box for repair or return, be sure to contact us to get a Return Authorization (RMA) number. Appendix Figure A-1. Block Diagram blackbox.com 22

24 Black Box Tech Support: FREE! Live. 24/7. Tech support the way it should be. Great tech support is just 20 seconds away at or blackbox.com About Black Box Black Box Network Services is your source for more than 118,000 networking and infrastructure products. You ll find everything from cabinets and racks and power and surge protection to media converters and Ethernet switches all supported by free, live 24/7 Tech support available in 20 seconds or less. Copyright All rights reserved 19