Black Box ACX1T Series User manual

ACX1T
BL A C K B OX®
Increase the distance between a source (computer,
CPU) and its console (keyboard, monitor, mouse,
and other peripheral devices).
Models available for CATx or fiber.
ServSwitch DKM Compact Extenders
ACX1T Series
ACX1R Series
Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500)
FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax [phone]
Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: [e-mail]
Customer
Support
Information

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Trademarks Used in this Manual
We‘re here to help! If you have any questions about your application
or our products, contact Black Box Tech Support at 724-746-5500
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 30 seconds.
Trademarks Used in this Manual
Black Box and the Double Diamond logo are registered trademarks, and ServSwitch is a trademark, of BB Technologies, Inc.
Mac is a registered trademark of Apple Inc.
TOSLINK is a registered trademark of Toshiba Corp.
Any other trademarks mentioned in this manual are acknowledged to be the property of the trademark owners.

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ACX1T
FCC and IC RFI Statements/WEEE/RoHS
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 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.
WEEE
The manufacturer complies with the EC Directive 2002/96/EG on the prevention of waste electrical and electronic equipment
(WEEE). The device labels carry a respective marking.
RoHS
This device complies with the EC Directive 2002/95/EG on the Restriction of the use of certain Hazardous Substances in electrical
and electronic equipment (RoHS).

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NOM Statement
Instrucciones de Seguridad
(Normas Oficiales Mexicanas 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.

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ACX1T
Safety Instructions
Safety Instructions
To ensure reliable and safe long-term operation of your DKM Compact Extender, please note the following guidelines:
Installation
• Only use in dry, indoor environments.
• The DKM Compact Extender and the power supply units can get warm. Do not situate them in an enclosed space without any
airflow.
• Do not place the power supply directly on top of the device.
• Do not obscure ventilation holes.
• Only use power supplies originally supplied with the product or manufacturer-approved replacements. Do not use a power
supply if it appears to be defective or has a damaged case.
• Connect all power supplies to grounded outlets. In each case, make sure that the ground connection is maintained from the
outlet socket through to the power supply's AC power input.
• Do not connect the link interface to any other equipment, particularly network or telecommunications equipment.
• Take any required ESD precautions.
Repair
• Do not attempt to open or repair a power supply unit.
• Do not attempt to open or repair the DKM Compact Extender. There are no user-serviceable parts inside.
• If there is a fault, contact Black Box Technical Support at 724-746-5500 or [e-mail].

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Table of Contents
Contents
1. Specifications........................................................................................................................................................................ 8
1.1 Interfaces ....................................................................................................................................................................... 8
1.1.1 DVI-D Single Link ................................................................................................................................................ 8
1.1.2 DVI-I Single Link.................................................................................................................................................. 8
1.1.3 USB-HID.............................................................................................................................................................. 8
1.1.4 USB 2.0 (transparent).......................................................................................................................................... 8
1.1.5 RJ-45 (Interconnect) ........................................................................................................................................... 8
1.1.6 Fiber SFP Type LC (Interconnect) ......................................................................................................................... 9
1.1.7 Serial Interface .................................................................................................................................................... 9
1.1.8 Analog Audio Interface....................................................................................................................................... 9
1.1.9 Digital Audio Interface ...................................................................................................................................... 10
1.2 Interconnect Cable .......................................................................................................................................................11
1.2.1CATx..................................................................................................................................................................11
1.2.2 Fiber.................................................................................................................................................................. 12
1.3 Supported Peripherals ................................................................................................................................................. 13
1.3.1 USB-HID Devices............................................................................................................................................... 13
1.3.2 USB 2.0 Devices ................................................................................................................................................ 13
1.4 Connector Pinouts....................................................................................................................................................... 13
1.5 Power Supply............................................................................................................................................................... 18
1.6 Environmental Conditions............................................................................................................................................ 18
1.7 Size ......................................................................................................................................................................... 18
1.8 Shipping Weight.......................................................................................................................................................... 18
2. Overview ......................................................................................................................................................................... 19
2.1 Application .................................................................................................................................................................. 19
2.2 System Overview ......................................................................................................................................................... 19
2.3 Product Range............................................................................................................................................................. 20
2.3.1 DKM Compact Transmitter and Receiver Units (CATx)...................................................................................... 20
2.3.2 DKM Compact Transmitter and Receiver Units (Fiber) ...................................................................................... 21
2.3.3 Upgrade Kits..................................................................................................................................................... 21
2.3.4 Accessories ....................................................................................................................................................... 22
2.4 Device Views ............................................................................................................................................................... 22
2.4.1 ACX1T-11-C/ACX1R-11-C (Single-Head, CATx) ................................................................................................. 22
2.4.2 ACX1T-11-SM/ACX1R-11-SM (Single-Head, Fiber) ............................................................................................. 23
2.4.3 ACX1T-12A-C/ACX1R-12A-C (Analog Audio /Serial, CATx) ............................................................................... 24
2.4.4 ACX1T-12A-SM/ACX1R-12A-SM (Analog Audio/Serial, Fiber) ........................................................................... 25
2.4.5 ACX1T-12D-C/ACX1R-12D-C (Digital Audio, CATx) .......................................................................................... 26
2.4.6 ACX1T-12D-SM/ACX1R-12D-SM (Digital Audio, Fiber) ...................................................................................... 27
2.4.7 ACX1T-13-C/ACX1R-13-C (USB 2.0 CATx) ........................................................................................................ 28
2.4.8 ACX1T-13-SM/ACX1R-13-SM (USB 2.0 Fiber).................................................................................................... 29
2.4.9 ACX1T-11V-C/ACX1R-11V-C (CATx with VGA).................................................................................................. 30
2.4.10 ACX1T-11V-SM/ACX1R-11V-SM (Fiber with VGA) ............................................................................................. 31
2.4.11 ACX1T-22-C/ACX1R-22-C (Dual-Head CATx).................................................................................................... 32
2.4.12 ACX1T-22-SM/ACX1R-22-SM (Dual-Head Fiber) ............................................................................................... 33
2.5 Status LEDs.................................................................................................................................................................. 34
2.5.1 Status Digital Audio (Option) ............................................................................................................................ 35
2.5.2 Status USB-HID Add-On (Option)..................................................................................................................... 36
2.5.3 Status USB 2.0 (Option).................................................................................................................................... 37
2.5.4 Status VGA/DVI-I (Option)................................................................................................................................ 38

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ACX1T
Table of Contents
3. Installation ...................................................................................................................................................................... 39
3.1 Package Contents........................................................................................................................................................ 39
3.2 System Setup............................................................................................................................................................... 40
3.2.1 KVM Extender Setup ..................................................................................................................................... 40
3.2.2 Setup of Optional Modules............................................................................................................................ 41
3.3 Example Applications .................................................................................................................................................. 42
4. Configuration ..................................................................................................................................................................... 44
4.1 Transmission Parameters.............................................................................................................................................. 44
4.2 DDC Settings............................................................................................................................................................... 44
4.3 Command Mode......................................................................................................................................................... 44
5. Operation ...................................................................................................................................................................... 46
6. Troubleshooting ................................................................................................................................................................. 47
6.1 Blank Screen................................................................................................................................................................ 47
6.2 USB-HID ...................................................................................................................................................................... 48
6.3 Serial Connection ........................................................................................................................................................ 49
6.4 Analog Audio............................................................................................................................................................... 49
6.5 Digital Audio ............................................................................................................................................................... 50
6.6 USB-HID Add-On .........................................................................................................................................................51
6.7 USB 2.0 Upgrade Module ........................................................................................................................................... 52
7. Technical Support............................................................................................................................................................... 53
7.1 Contacting Black Box................................................................................................................................................... 53
7.2 Shipping and Packaging .............................................................................................................................................. 53
8. Glossary ...................................................................................................................................................................... 54

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Chapter 1: Specifications
1. Specifications
1.1 Interfaces
1.1.1 DVI-D Single Link
The video interface supports the DVI-D protocol. All signals that comply with the DVI-D Single-Link specification can be
transmitted. This includes, for example, monitor resolutions such as 1920 x 1200 @ 60 Hz, Full HD (1080p), or 2K HD (up to
2048 x 1152). Data rate is limited to 165 Megapixels per second (MPixel/s).
1.1.2 DVI-I Single Link
The video interface supports the DVI-I protocol. All analog (VGA) or digital (DVI) signals that comply with the DVI-I Single-Link
specification can be transmitted. This includes monitor resolutions for VGA up to 1920 x 1200 @ 60 Hz, and monitor resolutions
for DVI-I up to Full HD (1080p) or for DVI-D 2K HD (up to 2048 x 1152). Data rate is limited to 165 MPixel/s.
NOTE: Transmission of interlaced video signals, such as 1920 x 1080i, cannot be guaranteed.
1.1.3 USB-HID
Our devices with an USB-HID interface support a maximum of two devices compliant with the USB-HID protocol. Each USB-HID
port provides a maximum current of 100 mA.
Keyboard
Compatible with most USB keyboards. Certain keyboards with additional functions may require custom firmware to operate.
Keyboards with an integral USB hub (such as Mac®keyboards) are also supported.
Mouse
Compatible with most 2-button, 3-button, and scroll mice.
Other USB-HID devices
The proprietary USB emulation also supports certain other USB-HID devices, such as specific touch screens, graphics tablets,
barcode scanners or special keyboards. Support cannot be guaranteed, however, for every USB-HID device.
NOTE: Only two USB-HID devices are supported concurrently, such as keyboard and mouse or keyboard and touch screen. A hub
is allowed, but it does not increase the number of HID devices allowed. You can also use Extenders with an addiitonal HID
channel.
To support other USB ”non-HID” devices, such as scanners, Web cams, or memory devices, choose our devices with transparent
USB support.
1.1.4 USB 2.0 (transparent)
DKM Modular Extender models with transparent USB 2.0 support allow the connection of all types of USB 2.0 devices (without
restriction). USB 2.0 data transfer is supported with high-speed USB (max. 480 Mbps).
Each USB 2.0 port provides a maximum current of 500 mA (high power).
1.1.5 RJ-45 (Interconnect)
For CATx device communications, the extender requires a 1000BASE-T connection.
Connector wiring must comply with EIA/TIA-568-B (1000BASE-T), with RJ-45 connectors at both ends. All four cable wire pairs
are used.
NOTE: DKM Extenders do not support TCP/IP protocol: Do not run the extenders through network equipment such as routers,
switches, or hubs.

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1.1.6 Fiber SFP Type LC (Interconnect)
The communication of fiber devices is performed via Gigabit SFPs that have to be connected to suitable fibers fitted with type LC
connectors (see Chapter 1.2.2).
NOTE: The correct function of the device can only be guaranteed with SFPs provided by Black Box.
CAUTION: SFP modules can be damaged by electrostatic discharge (ESD).
When handling, take care not to damage devices.
1.1.7 Serial Interface
The serial interface option supports a full-duplex transmission with a real hardware handshake up to a baud rate of 19,200.
The CON Unit is cabled as DTE (Data Terminal Equipment, such as CPU output) and can be connected directly to DCE (Data
Communication Equipment) devices.
• A touch screen can be connected directly to the CON Unit.
• To connect to a serial printer (or any other DTE instead of DCE device), you need a null-modem cable (cross-over cable)
between the CON Unit and the device.
Operation of several devices:
The serial interface transmits six signals (three for each direction). Normally, four of the six signals are handshake signals (in
addition to RxD and TxD). The following configurations, however, are possible using special adapter splitting cables:
• Three single 2-wire transmissions.
• Two transmissions with a handshake signal.
• A serial mouse and a single 2-wire transmission.
In this case, choose X-ON/X-OFF software handshake for traffic control at the printer and PC.
Table 1-1. Serial interface specifications.
Specification Description
Connection Format DTE (Data Terminal Equipment)
Speed Up to 19,200 baud
Data Format Format independent
Data Transmission
• RxD (Receive Data)
• TxD (Transmit Data)
Traffic Control
The following signals are transmitted (hardware handshake):
• RTS (Request to Send)
• CTS (Clear to Send)
• DTR (Data Terminal Ready)
• DSR (Data Set Ready)
1.1.8 Analog Audio Interface
The Analog Audio option supports a bidirectional stereo audio transmission, in nearly CD quality.
The audio interface is a “line level” interface and it is designed to transmit the signals of a sound card (or another “line level”
device) as well as to allow the connection of active speakers to the CON Unit.

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Chapter 1: Specifications
Stereo audio can be transmitted bidirectionally at the same time.
Connection of a microphone:
Connect the microphone to the “audio” input of the CON Unit. There are two ways to establish this connection:
• The output of the CPU Unit is connected with the microphone input of the sound card (red). Adjust the sound card to provide
an additional amplification (20 dB).
• The output of the CPU Unit is connected to the audio input of the sound card (blue). Choose this connection if the microphone
has its own pre-amplifier.
NOTE: The CON Unit can do the pre-amplification of the microphone as well. Open the CON Unit, locate the “MIC” jumper on
the audio board and close the pins.
Table 1-2. Analog audio specifications.
Specification Description
Transmission Format Digitized virtually CD quality audio (16-bit, 38.4 kHz)
Signal Level Line-level (5-volt pk-pk maximum)
Input Impedance 47 kOhm
Connections CPU Unit (2) 3.5-mm stereo audio plug (audio in and audio out)
Connections CON Unit (2) 3.5-mm stereo audio plug (audio in and audio out)
1.1.9 Digital Audio Interface
The digital audio option supports the unidirectional transmission of digital audio data.
Up to three sources can be connected to the CPU Unit. The active source is transmitted. If several sources are active, the XLR
signal takes priority, otherwise the first active signal.
Up to three sinks can be connected to the CON Unit. The signal is available at all outputs concurrently.
DKM Compact Extenders with digital audio option include a built-in sample rate converter that provides predefined sample
frequencies at the CON unit’s output.
The user can set the following parameters directly via a configuration file:
• Activate or deactivate sample rate converter
• Set sample frequency of the sample rate converter. The following sample frequencies are available:
– 32.0 kHz
– 44.1 kHz
– 48.0 kHz
– 96.0 kHz

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Chapter 1: Specifications
Table 1-3. Digital audio interface specifications.
Specification Description
Compatibility AES/EBU, S/PDIF, EIAJCP1201, IEC 60958
Standards Dolby digital, DTS, PCM
CPU Unit (Inputs)
• Mini XLR (AES/EBU; symmetrical lockable)
• Coaxial (S/PDIF; RCA, Cinch)
• Optical (S/PDIF, TOSLINK®)
CON Unit (Outputs)
• Mini XLR (AES/EBU; symmetrical, lockable)
• Coaxial (S/PDIF, RCA, Cinch
• Optical (S/PDIF, TOSLINK)
1.2 Interconnect Cable
1.2.1 CATx
NOTE: A point-to-point connection is required. Operation with several patch fields is possible. Routing is only supported using
ServSwitch DKM or ServSwitch DKM FX. Contact Black Box Technical Support at 724-746-5500 or [e-mail].
Routing over an active network component, such as an Ethernet hub, router, or switch, is not allowed.
• Avoid routing CATx cables along power cables.
• If the site has 3-phase AC power, make sure that CPU Unit and CON Unit are on the same phase.
CAUTION: To maintain regulatory EMC compliance, you must use correctly installed shielded CATx cable throughout the
interconnection link. Also, all CATx cables need to carry ferrites on both cable ends close to the device.
Type of Interconnect Cable
The DKM Compact Extender requires interconnect cabling specified for Gigabit Ethernet (1000BASE-T). The use of solid-core
(24 AWG), shielded, CAT5e (or better) is recommended.
Table 1-4. CATx interconnect cable specifications.
Parameter Description
CATx solid-core cable 24 AWG S/UTP (CAT5e) cable according to EIA/TIA-568-B. Four pairs of 24
AWG wires. Connection according to EIA/TIA-568-B (1000BASE-T).
CATx patch cable 26/8 AWG S/UTP (CAT5e) cable according to EIA/TIA-568-B. Four pairs of 26/8
AWG wires. Connection according to EIA/TIA-568-B (1000BASE-T).
NOTE: You can use flexible cables (patch cables) type 26/8 AWG; but you’ll only get half the maximum possible
extension distance (Table 1-5).

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Chapter 1: Specifications
Maximum Acceptable CATx Cable Length
Table 1-5. Maximum acceptable CATx cable length.
Cable Type Maximum Length
Solid-conductor CATx cable 400 feet (140 m)
Stranded-conductor CATx cable 200 feet (70 m)
1.2.2 Fiber
A point-to-point connection is necessary. Operation with multiple patch panels is allowed. Routing over active network
components, such as Ethernet hubs, switches, or routers, is not allowed.
Type of Interconnect Cable
(Cable notations according to VDE)
Table 1-6. Fiber cable specifications.
Cable Type Description
Single-mode fiber 9 µm
• Two 9-µm fibers
• Indoor patch cable (EFN310-xxM-LCLC)
Multimode fiber 50 µm
• Two 50-µm fibers
• Indoor patch cable (EFN6020-xxxM)
Multimode fiber 62.5 µm
• Two 62.5-µm fibers
• Indoor patch cable (EFN110-xxxM-LCLC)
Table 1-7. Maximum acceptable fiber cable length.
Cable Type Length
Single-mode fiber 9 µm 32,800 feet (10,000 m)
Multimode fiber 50 µm (OM3) 3280 feet (1000 m)
Multimode fiber 50 µm 1300 feet (400 m)
Multimode fiber 62.5 µm 650 feet (200 m)
NOTE: If you use single-mode SFPs with multimode fibers, you normally can double the maximum acceptable cable length.

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Connector type
The Compact Extenders have fiber LC connectors.
1.3 Supported Peripherals
1.3.1 USB-HID Devices
The DKM Modular Extender will support most USB-HID devices, including the vast majority of keyboards and mice currently on
the market. Many other kinds of HID devices such as bar-code scanners and touchscreens may also be compatible.
It is not possible to guarantee support for all available USB-HID devices. In certain cases, you may need custom firmware.
USB-HID (and other) devices that are not supported as standard will normally operate with our devices featuring transparent USB
support.
NOTE: Concurrent operation of more than two USB-HID devices is not possible even if you use a USB hub.
1.3.2 USB 2.0 Devices
DKM Modular Extender models featuring a transparent USB 2.0 connection use Extreme USB Technology. This technology
supports all types of USB 2.0 devices; however, we cannot guarantee compatibility with every device on the market. Please
contact Black Box Technical Support at 724-746-5500 or [e-mail] if any issues are found.
1.4 Connector Pinouts
Figure 1-1. DVI-D connector.
Table 1-8. DVI-D single-link connector pinout.
Pin Signal Pin Signal Pin Signal
1TMDS data 2- 9TMDS data 1- 17 TMDS data 0-
2TMDS data 2+ 10 TMDS data 1+ 18 TMDS data 0+
3TMDS data 2 GND 11 TMDS data 1 GND 19 TMDS data 0 GND
4not connected 12 not connected 20 not connected
5not connected 13 not connected 21 not connected
6DDC input (SCL) 14 +5 VDC high impedance 22 TMDS clock GND
7DDC output (SDA) 15 GND 23 TMDS clock +
8Internal use 16 Hot plug recogniition 24 TMDS clock -
C1 Internal use — — C3 Internal use
C2 not connected C5 GND C4 Internal use

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Chapter 1: Specifications
Connector DVI-I Single-Link
Figure 1-2. DVI-I connector.
Table 1-9. DVI-I single-link connector pinout.
Pin Signal Pin Signal Pin Signal
1TMDS data 2- 9TMDS data 1- 17 TMDS data 0-
2TMDS data 2+ 10 TMDS data 1+ 18 TMDS data 0+
3TMDS data 2 GND 11 TMDS data 1 GND 19 TMDS data 0 GND
4not connected 12 not connected 20 not connected
5not connected 13 not connected 21 not connected
6DDC input (SCL) 14 +5 VDC high impedance 22 TMDS clock GND
7DDC output (SDA) 15 GND 23 TMDS clock +
8V-sync 16 Hot plug recogniition 24 TMDS clock -
C1 Red signal — — C3 Blue signal
C2 Green signal C5 GND C4 H-sync
Connector USB Type B
Figure 1-3. USB Type B connector.
Table 1-10. USB Type B connector pinout.
Pin Signal Color
1VCC (+5 VDC) Red
2Data - White
3Data + Green
4GND Black

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Connector USB Type A
Figure 1-4. USB Type A connector.
Table 1-11. USB Type A connector pinout.
Pin Signal Color
1VCC (+5 VDC) Red
2Data - White
3Data + Green
4GND Black
Connector Mini USB Type B
Figure 1-5. Mini USB Type B connector.
Table 1-12. Mini USB Type B connector pinout.
Pin Signal Color
1VCC (+5 VDC) Red
2Data - White
3Data + Green
4not connected —
5GND Black
RJ-45 connector
Figure 1-6. RJ-45 connector.
Table 1-13. RJ-45 connector pinout.
Pin Signal Pin Signal
1D1+ 5D3-
2D1- - 6D2-
3D2+ 7D4+
4D3+ 8D4-

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Chapter 1: Specifications
Fiber SFP Type LC
Figure 1-7. SFP Type LC connector.
Table 1-14. SFP Type LC connector pinout.
Pin Signal
1Data OUT
2Data IN
Power Supply
Figure 1-8. Power supply label.
Table 1-15. Power supply connector pinout.
Pin Signal
Inside VCC (+5 VDC)
Outside GND
DB9 (Serial)
Figure 1-9. DB9 serial connector.
Table 1-16. DB9 serial connector pinout.
Pin Signal Pin Signal
1not connected 6DTR
2CTS 7TxD
3 RTS 8 RxD
4DSR 0not connected
5GND — —

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ACX1T
Chapter 1: Specifications
3.5-mm Stereo Jack Plug
Figure 1-10. 3.5-mm stereo jack plug.
Table 1-17. 3.5-mm stereo jack plug pinout.
Pin Signal
1GND
2Audio IN/OUT L
3Audio IN/OUT R
RCA (Cinch)
Figure 1-11. RCA connector.
Table 1-18. RCA connector pinout.
Pin Signal
1GND
2Data IN/OUT
Mini-XLR
Figure 1-12. Mini XLR connector.
Table 1-19. Mini XLR connector pinout.
Pin Signal
1GND
2Data +
3Data -

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Chapter 1: Specifications
TOSLINK
Figure 1-13. TOSLINK connector.
Table 1-20. TOSLINK connector pinout.
Pin Signal
1Data IN/OUT
1.5 Power Supply
Power — Per unit: 5-VDC;
Single-head devices: 800 mA max.;
Dual-head devices: 1600 mA max.;
Optional modules: Analog audio/serial 300 mA max.,
Digital audio: 300 mA max.,
USB-HID: 300 mA max.;
USB 2.0 modules: 2500 mA max.;
VGA: 900 mA max.
1.6 Environmental Conditions
Temperature Tolerance — Operating: +41 to +113° F (+5 to +45° C)
Storage Temperature: -13 to +140° F (-25 to +60° C)
Relative Humidity (Max.) — 80% non-condensing
1.7 Size
CPU Unit/CON Unit — SIngle-head-only devices: *Only ACX1T-11-xx and ACX1R-11-xx, ACX1R-11V-xxxx: 4"H x 5.6"W x 1.1"D
(10.3 x 14.3 x 2.9 cm);
Dual-head devices and single-head devices with optional modules: 4"H x 5.6"W x 1.7"D (10.3 x 14.3 x 4.3 cm)
*NOTE: Only for connection type: xx = C for CATx and xx = SM for Fiber Single-head devices.
Shipping Box — All AC1XR: 6.5"H x 6.5"W x 4.7"D (16.5 x 16.5 x 12 cm)
All AC1XT: 8.2"H x 8.2"W x 6.5"D (21 x 21 x 16.5 cm)
1.8 Shipping Weight
CPU Unit/CON Unit — Single-head-only devices: 0.7 lb. (0.3 kg);
Dual-head devices and single-head devices with optional modules: 0.9 lb. (0.4 kg)
Shipping Box — Single-head-only devices: 4 lb. (1.8 kg);
Dual-head devices and Single-head devices with optional modules: 5.1 lb. (2.3 kg)

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ACX1T
Chapter 2: Overview
2 Overview
2.1 Application
The DKM Compact Extender is used to increase the distance between a source (computer, CPU) and its console (keyboard,
mouse, and other peripheral devices). It’s designed for use with CATx (twisted-pair) interconnect cables or fiber interconnect
cables.
The DKM Compact Extender with CATx interconnect cables won’t work between buildings where you should use a fiber optic
based product instead.
The DKM Compact Extender with fiber interconnect cables also works with applications in environments that are difficult in elec-
tromagnetical aspects. Electromagnetical interference can limit the maximum distance und reliability.
The DKM Compact Extender is fully compatible with the DKM Modular Extender.
The unit is designed to work in point-to-point applications as well as through a ServSwitch DKM or ServSwitch DKM FX
crosspoint switch.
2.2 System Overview
The DKM Compact Extender consists of at least one CPU Unit and one console unit (CON Unit).
The CPU module connects directly to the source (computer, CPU) using the supplied cables. The CON unit connects to the
console (monitor, keyboard, and mouse). The CPU Unit and the CON unit communicate with each other through the interconnect
cables. Figure 2-1 shows a typical system application. Table 2-1 describes the components shown in the diagram.
1 2 3 4
5 7
6
Figure 2-1. System diagram.

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Chapter 2: Overview
Table 2-1. System components.
Number Component
1Source (computer, CPU)
2DKM Modular Extender CPU unit
3Interconnect cable
4DKM Modular Extender CON unit
5Console (monitor, keyboard, mouse)
6Second monitor (option, only with dual-head devices)
7USB-HID devices (option, only with (4) USB-HID devices)
NOTE: See Section 3.3 for installation examples.
2.3 Product Range
2.3.1 DKM Compact Transmitter and Receiver Units (CATx)
Table 2-2. CATx units.
Part Number Description
AC X1T-11- C Single-head transmitter (CPU) unit for (1) DVI-D single link (up to 1920 x 1200 with (2) USB-HID ports
ACX1R-11-C Single-head receiver (console [CON]) unit for (1) DVI-D single link (up to 1920 x 1200) with (2) USB-HID ports
ACX1T-13-C Single-head transmitter (CPU) unit for DVD-I (VGA/DVI) single link (up to 1920 x 1200) with (2) USB-HID ports, (4) USB 2.0 ports
ACX1R-13-C Single-head receiver (console [CON]) unit for DVI-I (VGA/DVI) single link (up to 1920 x 1200) with (2) USB-HID ports, (4) USB 2.0 ports
AC X1T-11V - C Single-head transmitter (CPU) unit for DVI-I (VGA/DVI) single link (up to 1920 x 1200) with (2) USB-HID ports and IR remote control
ACX1R-11V-C Single-head receiver (console [CON]) unit for DVI-I (VGA/DVI) single link (up to 1920 x 1200) with (2) USB-HID ports and IR remote control
ACX1T-12A-C Single-head transmitter (CPU) unit for single link (up to 1920 x 1200) with (4) USB-HID ports, bidirectional analog audio
ACX1R-12A-C Single-head receiver (console [CON]) unit for single link (up to 1920 x 1200) with (4) USB-HID ports, bidirectional analog audio
ACX1T-12D-C Single-head transmitter (CPU) unit for single link (up to 1920 x 1200) with (4) USB-HID ports, unidirectional digital audio
ACX1R12D-C Single-head transmitter (console [CON])) unit for single link (up to 1920 x 1200) with (4) USB-HID ports, unidirectional digital audio
ACX1T-22-C Dual-head transmitter (CPU) unit for single link (up to 1920 x 1200) with (4) USB-HID ports, no audio
ACX1R-22-C Dual-head receiver (console [CON]) unit for single link (up to 1920 x 1200) with (4) USB-HID ports, no audio