Black Box AC300A-RX-R2 User manual

BL A C K B O X®
Uses digital encoding for high-quality, noise-free
transmissions.
Supports Composite, S-Video, Component, progressive scan DVD, and
480p HDTV video formats with up to two channels of audio.
Video and Stereo Audio Fiber Optic Transmission System
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
724-746-0746 • Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence,
PA 15055-1018 • Web site: www.blackbox.com • E-mail: [e-mail]
Customer
Support
Information
AC300A-RX-R2
AC300A-TX-R2

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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 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.
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.

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AC300A-RX-R2
NOM Statement
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
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.

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NOM Statement
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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AC300A-RX-R2
Trademarks Used in this Manual
Trademarks Used in this Manual
Black Box and the Double Diamond logo are registered trademarks of
BB Technologies, Inc.
ST is a registered trademark of AT&T.
Any other trademarks mentioned in this manual are acknowledged to be
the property of the trademark owners.

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Table of Contents
Contents
Chapter Page
1. Specifications ......................................................................................7
1.1 General ......................................................................................7
1.2 Video ......................................................................................7
1.3 Audio ......................................................................................7
1.4 Optical ......................................................................................8
1.5 Miscellaneous.................................................................................9
2. Overview ....................................................................................10
2.1 Introduction .................................................................................10
2.2 Features ....................................................................................10
2.3 What’s Included...........................................................................10
2.4 Hardware Description ..................................................................11
2.4.1 Transmitter Unit..............................................................11
2.4.2 Receiver Unit...................................................................12
3. Installation ....................................................................................14
3.1 Introduction .................................................................................14
3.2 System Switch Settings ................................................................14
3.3 System Connections.....................................................................15
4. Operation ....................................................................................17
4.1 Indicator LEDs ..............................................................................17
4.2 Optical Fiber.................................................................................18
5. Troubleshooting ....................................................................................19

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AC300A-RX-R2
Chapter 1: Specifications
1. Specifications
1.1 General
Operating Wavelength: 1310 nm
Optical Connector: ST
Indicators: Each unit: (3) LEDs: Power, Video, Audio
Temperature Tolerance: Operating: -14 to +140° F (-10 to +60° C)
Size: Each unit: 1.2"H x 6.5"W x 8"D (2.9 x 16.5 x 20.3 cm)
Weight: 1 lb. (0.5 kg)
1.2 Video
Bandwidth: Y: 14 MHz; R-Y and B-Y: 7 MHz (-3 dB)
Differential Gain: 0.7%
Differential Phase: 0.5°
Frequency Response: Composite and S-Video: 15 MHz (-3 dB);
Component Video: Y: 30 MHz (-3 dB);
PrPb: 15 MHz 9-3 dB)
Input/Output Impedance: 75 ohms, nominal
Input/Output Voltage: 1 Vp-p nominal, 1.1 VP-p maximum
Signal to Noise Ratio: 60 dB CCIR weighted
Signal Connectors: (3) BNC
System Gain: Unity Gain, ±3%
Y/C Delay: <5 ns
2T K-Factor: 0.5%
Connectors: BNC; 4-pin mini DIN for S-Video
1.3 Audio
Audio Noise Level: -85 dBm
Audio to Video Differential Delay (skew): <300 µsec
Bandwidth: 20 Hz to 20 kHz (-3 dB)
Bits per Sample/Sampling Rate: 24 bits, 64 kHz

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Chapter 1: Specifications
Channel Phase Differential: ± 0.1°
Crosstalk: -100 dB (1 kHz)
Frequency Response: +0/-0.5 dB, 20 Hz–20 kHz
Input/Output Impedance: 600 ohms terminated, or >24 kohms unterminated
Input/Output Voltage: 0 dBm nominal +10 dBm maximum
Maximum Audio Level: +10 dBu
Number of Audio Channels: (2) balanced or unbalanced
Output Impedance: 50 ohms nominal
Receiver Output Gain: +0 dB or _6 dB, switch selectable
Signal to Noise Ratio (A-weighted): 95 dB referenced full scale (balanced)
Signal Connectors: Removable terminal block
System Gain: Unity Gain, ±3% input: balanced 600 ohms source impedance;
output: balanced into 600 ohms, gain boost 0 dB
THD: ± 0.1%
User Controls: (3) DIP switches: Select input termination, balanced or unbalanced
input/output, selectable on a per-channel basis, Output gain boost +0 dB
or +6 dB
Connector: Screw terminal block
1.4 Optical
Operating Wavelength: 1310-nm single-mode (also works with multimode)
Optical Fiber: 50/125 or 62.5/125 microns multimode, 9/125 microns
single-mode
Optical Connectors: ST®

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AC300A-RX-R2
Chapter 1: Specifications
Table 1-1. Distance.
Fiber Type Loss Budget (in dB) Distance*
Single-mode fiber 0–17 24.9 miles (40 km)
Multimode fiber (62.5µ) 0–17 3280 feet (1 km)
Multimode fiber (50 µ) 0–17 4264 feet (1.3 km)
*NOTE: Distance specifications are only approximate and are not guaranteed.
Do not exceed the operating loss budget.
1.5 Miscellaneous
Operating Temperature: -32 to +167° F (-35 to +75° C)
Power: 9 to 24 VAC or VDC @ 5 watts (maximum)
CAUTION: The transmitting segment in some versions of the transmitter
(AC300A-TX-R2) is a solid-state laser diode located in the optical
connector on the unit. This device emits invisible infrared electromag-
netic radiation that might be harmful to human eyes. The radiation
from the optical connector, if viewed at close range without a fiber
optic cable connected to the optical connector, might cause instanta-
neous damage to the retina of the eye. Do not look directly into the
laser.

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Chapter 2: Overview
2. Overview
2.1 Introduction
The Universal Video and Stereo Audio Fiber Optic Transmission System
is a configurable, adjustment-free transmitter/receiver pair that uses all digital
processing and transmission techniques. The unidirectional system supports five
different video formats—Composite, S-Video, Component, progressive scan DVD,
and 480p HDTV—with up to two channels of audio.
The system uses digital encoding to ensure high-quality noise-free transmissions
that retain all their initial parameters regardless of fiber optic cable attenuation.
Indicator LEDs on each unit continuously signify the presence of video and audio
signals.
2.2 Features
• Three modes of video operation: HD/SD Component, S-Video, or three channels
of Composite Video.
• 30-MHz Component video bandwidth.
• 15-MHz Composite and S-Video bandwidth per channel.
• Supports 1080i and 720p Component video.
• Video channel is compatible with NTSC, PAL, or SECAM video standards.
• Two audio channels that may be user-configured for balanced or unbalanced
inputs and outputs.
• Switch-selectable audio output gain boost of +0 dB or +6 dB.
• Indicator LEDs monitor power, video, and audio signals.
• Transmits over one multimode or single-mode fiber.
• No adjustments; pure digital processing and transmission.
• Wide-range power supply allows operation from both AC and DC sources.
• System consists of transmitter and receiver unit.
2.3 What’s Included
This product contains the following components. You will need one AC300A-
TX-R2 transmitter and one AC300A-RX-R2 receiver. If anything is missing
or damaged, contact Black Box Technical Support at 724-746-5500
or [e-mail].

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AC300A-RX-R2
Chapter 2: Overview
The AC300A-TX-R2 includes:
• (1) transmitter unit
• (1) 12-ft. (3.6-m) Composite video cable, BNC/BNC
• (1) 6-ft. (1.8-m) S-Video M/M cable
• (1) 10-ft. (3.0-m) Component video cable, (3) BNC to (3) RCA plugs
• (1) 10-ft. (3.0-m) stereo audio cable, (4) tin-lead-shielded twisted pairs
to (2) RCA plugs
• (1) BNC female to RCA male adapter
• (1) universal power supply
• (1) IEC320 power cord
The AC300A-RX-R2 includes:
• (1) 12-ft. (3.6-m) Composite video cable, BNC/BNC
• (1) 6-ft. (1.8-m) S-Video M/M cable
• (1) 10-ft. (3.0-m) Component video cable, (3) BNC to (3) RCA plugs
• (1) 10-ft. (3.0-m) stereo audio cable, (4) tin-lead-shielded twisted pairs
to (2) RCA plugs
• (1) BNC female to RCA male adapter
• (1) universal power supply
• (1) IEC320 power cord
2.4 Hardware Description
2.4.1 Transmitter Unit
Figures 2-1 and 2-2 show the side panels of the transmitter unit. Table 2-1
describes the transmitter’s components.
AUDIO
5. Power
connector
2. Audio
input TX
4. ST
connector
3. S-Video
connector
1. (2) BNC
connectors
1. (1) BNC
connector
Figure 2-1. Side 1, transmitter.

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Chapter 2: Overview
POWER LED
6. Power
LED
7. Video A, B,
and C LEDs
8. Audio
LED
9. Configuration
DIP switches
Figure 2-2. Side 2, transmitter.
Table 2-1. Transmitter components.
No. Component Description
1 (3) BNC connectors Links to video input.
2 (1) screw terminal block Links to audio input.
3 (1) S-Video connector Links to video input.
4 (1) ST connector Links to fiber optic interface.
5 (1) Power connector Links to 9–24 V AC/DC source.
6 (1) Power LED Lights when power is on.
7 (3) Video LEDs Light when video signals are active.
8 (1) Audio LED Lights when audio signal is active.
9 (1) 6-position DIP switch Changes the switch’s configuration.
2.4.2 Receiver Unit
Figures 2-3 and 2-4 show the side panels of the receiver unit. Table 2-2 describes
the receiver’s components.

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AC300A-RX-R2
Chapter 2: Overview
AUDIO
5. Power
2. Audio
output RX
4. ST
connector
3. S-Video
connector
1. (2) BNC
connectors
1. (1) BNC
connector
Figure 2-3. Side 1, receiver.
POWER LED
6. Power
LED
7. Video A,
B, and C
LEDs
8. Audio
LED
9. Configuration
DIP switches
Figure 2-4. Side 2, receiver.
Table 2-2. Receiver components.
No. Component Description
1 (3) BNC connectors Links to video output.
2 (1) screw terminal block Links to audio output.
3 (1) S-Video connector Links to video output.
4 (1) ST connector Links to fiber optic interface.
5 (1) power connector Links to 9–24 V AC/DC source.
6 (1) Power LED Lights when power is on.
7 (3) Video LEDs Light when video signals are active.
8 (1) Audio LED Lights when audio signal is active.
9 (1) 6-position DIP switch Changes the switch configuration.

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Chapter 3: Installation
3. Installation
3.1 Introduction
The Video and Stereo Audio Fiber Optic Transmission System is normally preset
for immediate use with audio input circuitry set for balanced 600-ohm input
impedance and output set for balanced audio. If a different protocol is desired,
it can be easily selected using the DIP switches located on the back panel
of the unit. (See Table 3-1.) There are indicator LEDs on the units for monitoring
purposes and various user-selectable options for the various signal types. The
following instructions describe the typical installation procedure and the function
of the LED indicators.
1. The various options, as already mentioned, have been preset. If unbalanced
high-input impedance or unbalanced output is desired, refer to instructions in
Tables 3-1 and 3-2.
2. Connect the fiber optic cable or cables between the transmitter and receiver
units. See Section 2.3 for a list of cables provided and Section 2.2 for the types
of signals they support.
3. Apply power to both transmitter and receiver units.
4. When power is applied, the green POWER LED will light, indicating the
presence of operating power. The green VIDEO LED(s) and AUDIO LED(s)
will light as described in Table 4-1.
5. Connect the audio input cables to the proper positions on the removable
terminal blocks. Be certain to check all connections and ensure that inputs
and outputs are not intermixed. Refer to Table 3-3, which describes the various
connections.
6. The system should now be operational.
3.2 System Switch Settings
The audio interface circuit used in this product has external switches that are used
to configure the various signal options. If you wish to make changes to the factory
default settings, refer to Tables 3-1 and 3-2.

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Chapter 3: Installation
Table 3-1. Video and audio configuration switch settings (transmitter unit).
Video 3X Composite SVid/Composite HD Component
Switch 1 & 2
Audio Balanced (600 ohms) Balanced (24 k) Unbalanced (24 k)
Channel 1
Switch 5 & 6
Channel 2
Switch 3 & 4
Table 3-2. Audio configuration switch settings (receiver unit).
Balanced Unbalanced Boost No Boost
Audio
Channel 1
Switch 4 & 6
Channel 2
Switch 3 & 5
NOTE: On the receiver unit in the AC300A-R2 system, Switches 1 and 2 are not
used and should be left in the off position.
3.3 System Connections
The various input and output connections for the system are described in Table
3-3.
123456123456123456
123456
123456
123456
123456
123456
123456
123456
123456
123456
123456
123456
123456
123456
123456

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Chapter 3: Installation
Table 3-3. Video input or output (3 BNC connectors).
Audio Connector—Transmitter Unit
Balanced Unbalanced
Position 1- Channel 1 Input (-) Channel 1 Ground
Position 1+ Channel 1 Input (+) Channel 1 Signal
Position G Ground —
Position 2- Channel 2 Input (-) Channel 2 Ground
Position 2+ Channel 2 Input (+) Channel 2 Signal
Audio Connector - Receiver Unit
Balanced Unbalanced
Position 1- Channel 1 Output (-) Channel 1 Ground
Position 1+ Channel 1 Output (+) Channel 1 Signal
Position G Ground —
Position 2- Channel 2 Output (-) Channel 2 Ground
Position 2+ Channel 2 Output (+) Channel 2 Signal

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AC300A-RX-R2
Chapter 4: Operation
4. Operation
4.1 Indicator LEDs
The system has integral indicator LEDs that are used to monitor the state of the
units. Transmitter and receiver units each feature one Video LED, one Audio LED
and one Power LED, shown in Figure 4-1. Table 4-1 explains each LED’s functions.
POWER LED
Power
LED
Video A, B,
and C LEDs
Audio
LED
Figure 4-1. LEDs on the transmitter and receiver.
Table 4-1. LEDs and their functions.
Transmitter and Receiver
LED Color/State Description
Power Green/ON Indicates that correct power has been applied.
Video A OFF Indicates no video detected on the input
Y-Video BNC connector.
ON Indicates video detected on the input Y-Video
BNC connector.
Video B OFF Indicates that no video is present.
ON Indicates that video is present.
Video C OFF Indicates that no video is present.
ON Indicates that video is present.
Audio OFF No audio detected on input audio connector.
BLINKING Audio detected on input audio connector.

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Chapter 4: Operation
4.2 Optical Fiber
The system operates with most multimode and single-mode optical fibers. Be
certain that the correct size fiber is being used for the particular transmitter/receiv-
er combination.
Also be certain that the attenuation and bandwidth of the fiber optic cable being
used is within the range of the system’s loss budget specifications.

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AC300A-RX-R2
Chapter 5: Troubleshooting
5. Troubleshooting
Multimode fiber optic cable contains an optical fiber with a light carrying “core”
that is only .0025 inches (62.5 microns) in diameter. Single-mode fiber optic cable
has an even smaller “core,” only 00032 to .0004 inches (8-10 microns). This is
smaller than a human hair. As a result, any minute particles of dirt or dust can
easily block the fiber from accepting or radiating light. Therefore, the key word is
cleanliness. Always use the dust caps provided with all optical connectors when-
ever they are exposed to air. Also, it is a good idea to gently clean the tip of an
optical connector with a lint-free cloth moistened with alcohol whenever dust is
suspected.
The status of any of the indicator LEDs should provide the first clue as to the
cause of any operation failure. Be certain that the input and output signal
connections are correct. Because of the number of positions, there may be wrong
connections.
Finally, although multimode and single-mode devices may look the same, they will
not operate properly if used together. Using the wrong device or fiber can easily
add more attenuation than specified, resulting in poor overall performance.
If, after reviewing the above possibilities, the system is still not operating, please
contact Black Box Technical Support at 724-746-5500 or [e-mail] for
further assistance.
The only maintenance that can be provided by the user is to make sure that
optical connectors are free of dust or dirt that could interfere with light
transmission and that electrical connections are secure and accurate.
For any other questions or problems, contact Black Box Technical Support
at 724-746-5500 or [e-mail].

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AC300A-RX-R2, rev. 1