Artel Fiberlink 7142 Series User manual

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MANUAL
4 Channels of Composite Video and
8 Channels of Audio over one single
mode or multimode fiber
Installation and Operations
Manual
FiberLink®
7142 Series

Page 2 FiberLink 7142 Series User’s Manual
FibeLink 7142 Series
Contents
Welcome .............................................................3
Features..............................................................3
Package Contents .....................................................3
Technical Specifications
Model Part Number Specifications..................................4
General Specifications ............................................4
Video Specifications ..............................................4
Audio Specifications ..............................................5
Operating Loss Budgets ...........................................6
Maximum Useable Distance........................................6
Installation Instructions ...............................................6
Audio Configuration (Transmitter) ......................................7
Audio Configuration (Receiver) .........................................7
Audio Wiring ..........................................................8
Indicator LEDs ........................................................9
Operating Pointers ...................................................10
Troubleshooting .....................................................10
Maintenance and Repairs .............................................11
Certifications ........................................................11
Contents

Page 3FiberLink 7142 Series User’s Manual
FiberLink 7142 Series
Welcome
Thank you for purchasing Artel Video Systems’ FiberLink 7142 Series. The FiberLink 7142
Series transmits four channels of uncompressed composite video and eight channels of au-
dio over a single fiber optic cable. The system provides 7 MHz bandwidth per video channel
and is compatible with NTSC, PAL and SECAM video standards.
Audio bandwidth is 20 Hz to 20 kHz. The 7142 Series, consisting of two units, transmitter
and receiver, is available for use with single or multimode fiber. Indicator LEDs
continuously indicate the presence of video, audio and power signals. The system’s wide
operating temperature range makes it suitable for use in any indoor or protected outdoor
environment.
Features
• Transmits over multimode or single mode fiber at 1310 nm
• No adjustments; processing and transmission
• 7 MHz video bandwidth
• Video channel is compatible with NTSC, PAL or SECAM video standards
• 18-bit audio sampling; 20 Hz to 20 kHz audio bandwidth
• Audio channels may be configured independently by the user to have either
balanced or unbalanced inputs and outputs
• Indicator LEDs monitor video signals, audio signals and power
• Universal input internal power supply
• Compatible with FiberLink 8200 Series
• Unit stands 1 RU high. Rackmount ears are included
Package Contents
• One FiberLink 7142 or 7143
• This User’s Manual
• Rackmount Ears
• Power Cable
Welcome | Features | Package Contents

Page 4 FiberLink 7142 Series User’s Manual
FibeLink 7142 Series
Model Part Number Specification
Unit Type Part Number
Transmitter 7142-S7
Receiver 7143-S7
General Specifications
LED Indicators Power; Video Present (per channel);
Audio Present (per channel)
Power 95-250 volts AC, 47-63 Hz
7142: 9.5 Watts, 32.41 BTU/hr
7143: 8.5 Watts, 29.00 BTU/hr
Operating Temperature Range 0o to +55o C
Optical Connectors ST
Operating Wavelength 1310 nm
CWDM Capable Yes, Contact Sales
Physical Size 1.75 H x 16.75 W x 10 D (inches)
44 H x 425 W x 254 D (mm)
Weight 5lbs; 2.2kg
MTBF 34,000 Hours
Compatibility Compatible with FiberLink 8200 Series.
Not compatible with FiberLink
7140 & 7141 products
Technical Specifications
Technical Specications

Page 5FiberLink 7142 Series User’s Manual
FiberLink 7142 Series
Video Specifications
Number of channels 4
Video Bandwidth (per channel) 7 MHz (-3 dB)
Input/Output Impedance 75 Ohms
Normal Input/Output Voltage 1V p-p nom., 1.1V p-p max.
Dierential Gain 1%
Dierential Phase 0.5 degree typical
Signal-to-Noise Ratio 62 dB CCIR weighted typical
Video Connectors BNC
Audio Specifications
Number of channels 8, balanced or unbalanced
Frequency Response (per channel) 20 Hz to 20 kHz (-3 dB)
Input Impedance 600 Ohms terminated;
>24 k Ohms unterminated
Output Impedance 50 Ohms
Normal Input/Output Voltage 0 dBu nom., +10 dBu max.
Signal-to-Noise Ratio 85 dB
THD+N 0.1% typical
Audio Connectors Screw terminal block
Switches Dip switches to select input
termination, balanced or
unbalanced input/output.
Selectable on a per-channel basis
Technical Specifications
Technical Specications

Page 6 FiberLink 7142 Series User’s Manual
FibeLink 7142 Series
Optical Loss Budget & Maximum Useable Distance
Fiber Type Loss Budget Distance
Single Mode Fiber 0-17 dB 48km
Multimode Fiber (62.5u) 0-17 dB 1.0km
Multimode Fiber (50u) 0-17 dB 1.3km
*Distance specifications are approximate and are not guaranteed.
Operating loss budget must not be exceeded.
Optical Loss Budgets | Installation Instructions
Installation Instructions
The FiberLink 7142 Series of fiber optic transmission systems are ready for immediate
use and do not require any special tools or equipment. However, an Optical Power Meter,
such as the FiberLink 6615, can be useful in determining optical loss budgets during your
systems design and maintenance.
The following instructions describe the typical installation procedure:
1. Connect the video sources to the video input BNC connectors on the transmitter unit.
2. (Optional) Connect your audio sources to the audio inputs on the transmitter unit.
3. Connect the video output cables to the video output BNC connectors on the
receiver unit.
4. (Optional) Connect audio ouput cables to the audio ouputs on the receiver unit.
5. Connect the fiber optic cable to the transmitter and receiver units.
6. Configure your audio preferences as described in the Audio Configuration
section of this manual.
7. When power is applied, the green POWER LED should illuminate, indicating the
presence of operating power. The Video and the Audio LEDs will give an indication
as described in the Indicator LED’s and Alarm Circuitry section of this manual.
8. The system should now be operational.
The transmitting element in the FiberLink 7142 transmitter
unit contains a solid state Laser Diode located in the optical
connector. This device emits invisible infrared electromagnetic
radiation which can be harmful to human eyes. The
radiation from this optical connector, if viewed at close range
with no fiber optic cable connected to the optical
connector, may be suicient intensity to cause
instantaneous damage to the retina of the eye. Direct
viewing of this radiation should be avoided at all times!

Page 7FiberLink 7142 Series User’s Manual
FiberLink 7142 Series
Right Channel
Controlled by
Switches 3 & 4
Audio Conguration (Transmitter)
Audio Conguration:
The FiberLink 7142 Series units have four four position DIP switches that are
accessible from the front panel. Operation is as follows:
Audio Configuration Switch Settings (Transmitter - Input)
Channel Balanced Balanced Unbalanced
(Switch Position) (600 Ohms) (24k) (24k)
Switch1 Down Switch 1 Down Switch 1 Up
Switch 2 Up Switch 2 Down Switch 2 Up
Switch 3 Down Switch 3 Down Switch 3 Up
Switch 4 Up Switch 4 Down Switch 4 Up
Audio Configuration Switch Settings (Receiver - Output)
Channel Balanced Unbalanced
(Switch Position)
Switch 3 Down Switch 3 Up
Switch 4 Down Switch 4 Up
Left Channel
Controlled by
Switches 1 & 2
Left Channel
Controlled by
Switch 3
Right Channel
Controlled by
Switch 4

Page 8 FiberLink 7142 Series User’s Manual
FibeLink 7142 Series Audio Wiring
Audio Wiring - Transmitter
Audio Wiring - Receiver
Balanced
Balanced
Unbalanced
Unbalanced
1+
1+
1+
1+
2+
2+
2+
2+
1-
1-
1-
1-
Channel 1 Input (+)
Channel 1 Input (-)
Ground (Shield)
Channel 1 Output (+)
Channel 1 Output (-)
Ground (Shield)
Channel 1 Ground (+)
Channel 1 Signal (-)
Shield
Channel 1 Ground (+)
Channel 1 Signal (-)
Shield
2-
2-
2-
2-
G
G
G
G
Channel 2 Input (+)
Channel 2 Input (-)
Channel 2 Output (+)
Channel 2 Output (-)
Channel 2 Ground (+)
Channel 2 Signal (-)
Channel 2 Ground (+)
Channel 2 Signal (-)

Page 9FiberLink 7142 Series User’s Manual
FiberLink 7142 Series Indicator LEDs
LEDs
LED Status Definition
Power On Indicates that correct power has been applied.
Video O Indicates that no video is present
On Indicates that video is present
Audio O Indicates that no audio is present
Blinking Indicates that audio is present
Indicator LEDs
The FiberLink 7142 Series has several indicator LEDs that are used to monitor the state of
the unit. Each unit features one Power LED, 4 Video LEDs and 8 Audio LEDs, each corre-
sponding to a specific channel. The LED’s are as follows:

Page 10 FiberLink 7142 Series User’s Manual
FibeLink 7142 Series
Operating Pointers
Remember to check attenuation of the fiber optic cable. The system will only operate
properly if these specifications fall within the range of the system’s loss budget.
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!
Therefore, any minute particles of dirt or dust can easily block the fiber from accepting or
radiating light. To prevent this from happening, always use the provided dust caps when
ever optical connectors are exposed to air. It is also 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 the LEDs should provide the first clue as to the origin of any operational
failure. If these are o, it usually means that the fiber is broken or has too much
attenuation.
Next, be certain that the input and output signal connections are correct.
An optical power meter, such as the FiberLink 6650, a visible light source, such as the
FiberLink 6656, and a Three Wavelength Light Source, such as the FiberLink 6654, can
greatly assist and expedite troubleshooting of fiber optic transmission systems and are
recommended tools all installers should have available.
Finally, although multimode and single mode devices may look the same, they will not
operate properly together. Using the wrong device or fiber can easily add more attenuation
than specified, resulting in poor overall performance. It should be noted that some of our
fiber optic products support both single mode and multimode fiber in the same unit.
If, aer reviewing the above possibilities, the system is still not operating, please contact
the Customer Service Department for further assistance. If you suspect your problem is
caused by the optics or the fiber optic cable, and you have an optical power meter, please
take the appropriate measurements prior to contacting support.
Operating Pointers | Troubleshooting