Artel 7820-B7S User manual
Fiberlink®
7820 Series
HD/SD Component, S-Video or Composite Video
with stereo audio over single mode or multimode ber.
Artel Video Systems’ Fiberlink® 7820 User’s Manual
The all-digital Fiberlink® 7820
series has three modes of
operation allowing the user to
transmit high-quality HD/SD
Component Video along with
stereo audio, or S-Video and
Composite Video along with
stereo audio, or three channels
of Composite Video along with
stereo audio, all over a single ber.
World Headquarters
5B Lyberty Way
Westford MA 01886 USA
Tel: (978) 263-5775
Fax: (978) 263-9755
artel.com
Page 2 Fiberlink® 7820 Series User’s Manual
Fiberlink® 7820 Series
Contents
Welcome .................................................................3
Features ..................................................................3
Package Contents.........................................................3
Technical Specications
Model Part Number Specications ....................................4
General Specications................................................4
Video Specications..................................................4
Audio Specications..................................................5
Operating Loss Budgets ..............................................6
Maximum Useable Distance ..........................................6
Alarm Switch Settings.....................................................6
Installation Instructions ...................................................7
Video & Audio Conguration (Transmitter).................................8
Video & Audio Conguration (Receiver) ....................................9
Audio Wiring.............................................................10
Indicator LEDs ...........................................................11
Operating Pointers .......................................................12
Troubleshooting .........................................................12
Maintenance and Repairs ................................................13
Certications ............................................................13
Warranty ................................................................14
Accessories and Related Products ........................................15
Contents
Page 3Fiberlink® 7820 Series User’s Manual
Fiberlink® 7820 Series
Welcome
Thank you for purchasing Artel Video Systems’Fiberlink® 7820 Series.
The Fiberlink® 7820 series has three modes of operation allowing the user to transmit
high-quality HD/SD Component Video along with stereo audio, or S-Video and Composite
Video along with stereo audio, or three channels of Composite Video along with stereo
audio, all over a single ber. The Fiberlink 7820 series is compatible with single mode or
multimode ber. The system utilizes all digital processing to deliver noise-free transmission.
The 7820 series is a cinche to install with no equalization, deskewing or special tools
required.
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-congured 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 ber
• 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; card or box version.
• Card version lls two slots in 6000A card cage
Package Contents
• One Fiberlink® 7820 or 7821
• This User’s Manual
Welcome | Features | Package Contents
Page 4 Fiberlink® 7820 Series User’s Manual
Fiberlink® 7820 Series
Model Part Number Specication
Unit Type Part Number
Transmitter Box 7820-B7S
Transmitter Rack Card 7820-C7S
Receiver Box 7821-B7S
Receiver Rack Card 7821-C7S
General Specications
Indicators
Power, Video, Audio,
Alarm (Card version)
Box Version Dimensions 6.5 W x 1.15 H x 8 L (inches)
165 W x 29 H x 203 L (mm)
Weight 1 lb. (0.455 kg)
Number of slots in 6000A card cage 2
Power 9-24 volts AC or DC,
TX: 4.5 Watts; 15.39 BTU/Hr
RX: 4.0 Watts; 13.68 BTU/Hr
Operating Temperature -10º to +60º C
Operating Wavelength 1310nm
Optical Connector ST
Video Specications
Frequency Response
Composite & S-Video: 15 MHz (-3 dB)
Component Video: Y: 30 MHz (-3dB)
PrPb: 15 MHz (-3dB)
Input/Output Impedance 75 Ohms, nominal
Signal-to-Noise Ratio 60 dB (CCIR weighted)
Dierential Gain 0.7%
Dierential Phase 0.5º
Y/C Delay < 5 ns
2T K-Factor 0.5%
Technical Specications
Technical Specications
Page 5Fiberlink® 7820 Series User’s Manual
Fiberlink® 7820 Series
Video Specications (cont.)
System Gain Unity Gain, ± 3%
Video Connector BNC; 4-Pin Mini-DIN for S-Video
Audio Specications
Number of Audio Channels 2, balanced or unbalanced
Bits per sample/ Sampling Rate 24 bits, 64 kHz
Audio Connector Screw terminal block
Switches • Select input termination
• Balanced or unbalanced
input/output, selectable on a
per-channel basis
• Output gain boost +0 dB or +6 dB
Frequency Response +0/-0.5 dB, 20 Hz - 20 kHz
Maximum Audio Level +10 dBu
Signal-to-Noise Ratio (A-weighted) 95 dB referenced full scale (balanced)
THD 0.002%, 20Hz - 20 kHz, full scale
Channel Phase Dierential ±0.1º
Crosstalk -100 dB (1kHz)
Audio Noise Level -85 dBm
System Gain Unity Gain, ±3%, input: balanced
600 ohms, 50 ohms source
impedance ; output: balanced into
600 ohms, gain boost 0 dB.
Receiver Output Gain +0 dB or +6 dB; switch selectable
Input Impedance 600 Ohms terminated,
>24K ohms unterminated
Output Impedance 50 Ohms nominal
Audio to Video Di. Delay (skew) <300 usec
Technical Specications
Technical Specications
Page 6 Fiberlink® 7820 Series User’s Manual
Fiberlink® 7820 Series
Optical Loss Budget & Maximum Useable Distance
Fiber Type Loss Budget Distance
Single Mode Fiber 0-17 dB 40km
Multimode Fiber (62.5u) 0-17 dB 1.0km
Multimode Fiber (50u) 0-17 dB 1.3km
*Distance specications are approximate and are not guaranteed.
Operating loss budget must not be exceeded.
Alarm Switch Settings for the Transmitter Card
Switch Position Alarm Indication On O
1 (Channel A) Loss of Input Video Enabled Disabled
2 (Channel B) Loss of Input Video Enabled Disabled
3 (Channel C) Loss of Input Video Enabled Disabled
4 N/A N/A N/A
Alarm Switch Settings for the Receiver Card
Switch Position Alarm Indication On O
1 (Channel A) Loss of Input Video Enabled Disabled
2 (Channel B) Loss of Input Video Enabled Disabled
3 (Channel C) Loss of Input Video Enabled Disabled
4 Loss of Optical Signal Enabled Disabled
Alarm Switch Settings & Options
The Rack Card version of this product has an additional red indicator LED that illuminates
when an alarm condition exists.
The rack card unit also provides an output to drive a model 6020A Alarm Sensing Module
which provides an audible tone and activates a set of contacts for external signaling
purposes.
Optical Loss Budgets | Alarm Switch Settings
Page 7Fiberlink® 7820 Series User’s Manual
Fiberlink® 7820 Series
9-24 Volts
AC or DC
( - ) Negative
(+) Positive
Figure 1:
Power Connector
DC Input Polarity
Installation Instructions
The Fiberlink® 7820 Series of ber 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 source to the video input (BNC or S-Video) on the transmitter unit.
2) (Optional) Connect your audio source to the audio input on the transmitter unit.
3) Connect the video output cable to the video output (BNC or S-Video) connector on the
receiver unit.
4) (Optional) Connect audio ouput cable to the audio ouput on the receiver unit.
6) Connect the ber optic cable to the transmitter and receiver units.
7) Congure your video preferences as described in the Video & Audio Conguration
section of this manual.
8) Congure your audio preferences as described in the Video & Audio Conguration
section of this manual.
9) Connect the Universal Power Supply to the transmitter and receiver units.
For box versions using DC power, please refer to gure 1.
10) 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.
Note: The Fiberlink 7820 does not cross convert. For example, if you input S-Video on the
transmitter, only S-Video will be available on the receiver.
Note: The Rack Card version has an additional red LED for indicating the presence of an alarm
condition (loss of signal). Refer to Indicator LED’s and Alarm Circuitry sections of this manual.
Installation Instructions
The transmitting element in the Fiberlink® 7820 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
ber optic cable connected to the optical connector, may be
sucient intensity to cause instantaneous damage to the
retina of the eye. Direct viewing of this radiation should be
avoided at all times!
Page 8 Fiberlink® 7820 Series User’s Manual
Fiberlink® 7820 Series
Video & Audio Conguration Switch Settings (Transmitter Box)
3x Composite SVid/Composite HD Component
Balanced (600Ω) Balanced (24k) Unbalanced (24k)
Video & Audio Conguration Switch Settings (Transmitter Card)
3x Composite SVid/Composite HD Component
Balanced (600Ω) Balanced (24k) Unbalanced (24k)
Video & Audio Conguration (Transmitter)
Video & Audio Conguration (Transmitter):
The Fiberlink 7820 Transmitter units have a six position DIP switch that is accessible from
the front panel. Operation is as follows:
Video
Switch 1 & 2
Video
Switch 1 & 2
Audio Ch 1:
Switch 5 & 6
Audio Ch 1:
Switch 5 & 6
Audio Ch 2:
Switch 3 & 4
Audio Ch 2:
Switch 3 & 4
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Note: Composite Video
available on Channel A
Page 9Fiberlink® 7820 Series User’s Manual
Fiberlink® 7820 Series
Audio Conguration Switch Settings (Receiver Box)
Channel Balanced Unbalanced Boost No Boost
Audio Conguration Switch Settings (Receiver Card)
Channel Balanced Unbalanced Boost No Boost
Audio Conguration (Receiver)
Audio Conguration (Receiver):
The Fiberlink 7821 Receiver units have a six position DIP switch that is accessible from
the front panel. Switches 1 & 2 are not used. Operation is as follows:
Audio Ch 1:
Switch 4 & 6
Audio Ch 1:
Switch 4 & 6
Audio Ch 2:
Switch 3 & 5
Audio Ch 2:
Switch 3 & 5
There is no need to congure video settings on the 7821 receiver as the Fiberlink 7820
series does not cross convert video formats. The 7821 receiver will automatically detect
the video type and make the correct baseband outputs active.
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Page 10 Fiberlink® 7820 Series User’s Manual
Fiberlink® 7820 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 11Fiberlink® 7820 Series User’s Manual
Fiberlink® 7820 Series Indicator LEDs
LEDs
LED Status Denition
Power On Indicates that correct power has been applied.
Video A O Indicates that no video is present
On Indicates that video is present
Video B O Indicates that no video is present
On Indicates that video is present
Video C 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
Alarm On Error condition as described in the
Alarm Switch Settings section of this manual
Indicator LEDs
The Fiberlink® 7820 Series has several indicator LEDs that are used to monitor the state of
the unit. Card versions have an additional Alarm LED.
Page 12 Fiberlink® 7820 Series User’s Manual
Fiberlink® 7820 Series
Operating Pointers
Remember to check attenuation of the ber optic cable. The system will only operate
properly if these specications fall within the range of the system’s loss budget.
Troubleshooting
Multimode ber optic cable contains an optical ber with a light carrying “core” that is
only .0025 inches (62.5 microns) in diameter. Single mode ber 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 ber 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 rst clue as to the origin of any operational
failure. If these are o, it usually means that the ber 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® 6615, a visible light source, such as the
Fiberlink® 6610, and a Three Wavelength Light Source, such as the Fiberlink® 6620, can
greatly assist and expedite troubleshooting of ber 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 ber can easily add more attenuation
than specied, resulting in poor overall performance. It should be noted that some of our
ber optic products support both single mode and multimode ber in the same unit.
If, after 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 ber optic cable, and you have an optical power meter, please
take the appropriate measurements prior to contacting support.
Operating Pointers | Troubleshooting
Page 13Fiberlink® 7820 Series User’s Manual
Fiberlink® 7820 Series
Certications
Maintenance and Repairs
The Fiberlink® 7820 Series has been manufactured using the latest semiconductor devices
and techniques that electronic technology has to oer. They have been designed for long,
reliable and trouble-free service and are not normally eld repairable.
Should diculty be encountered, Artel Video Systems maintains a complete
service facility to render accurate, timely and reliable service of all products.
The only maintenance that can be provided by the user is to ascertain that optical
connectors are free of dust or dirt that could interfere with light transmission and that
electrical connections are secure and accurate. Please see the Troubleshooting section of
this manual for additional information.
An optical power meter, such as the Fiberlink® 6615, a visible light source, such as the
Fiberlink® 6610, and a Three Wavelength Light Source, such as the Fiberlink® 6620, can
greatly assist and expedite troubleshooting of ber optic transmission systems and are
recommended tools all installers should have available.
All other questions or comments should be directed to our Customer Service Department.
It should be noted that many “problems” can easily be solved by a simple telephone call.
If you suspect your problem is caused by the optics or the ber optic cable, and you have
an optical power meter, please take the appropriate measurements prior to contacting
support.
Maintenance and Repairs | Certications
Page 14 Fiberlink® 7820 Series User’s Manual
Fiberlink® 7820 Series
Fiberlink® 6656 Visible Fault Locator
The Fiberlink 6656 is a light-weight, hand-held tool
used to quickly troubleshoot faults in the continuity of
both single-mode and multimode bers. High-intensity
visible laser allows for visible fault location of breaks
and microbends in both single-mode and multimode
bers.
Fiberlink® 6650 Optical Power Meter
The Fiberlink 6650 Optical Power Meter is a high
accuracy, high resolution, microprocessor controlled
optical power meter. 65 dB dynamic range; calibrated
to measure 850, 1300, 1310 and 1550nm. Works with
multimode and single mode ber. Graphical LCD
display with intuitive user interface with simple 2-key
operation.
Fiberlink® 6654
Dual Wavelength Single Mode
Light Source
The Fiberlink® Light Source oers a laser output at
selectable wavelengths, allowing for convenient, on-
site testing of ber networks during construction and
maintenance procedures.
Accessories and Related Products
Page 15Fiberlink® 7820 Series User’s Manual
Fiberlink® 7820 Series Warranty
Fiberlink®
7820 Series
HD/SD Component, S-Video or Composite Video
with stereo audio over single mode or multimode ber.
Artel Video Systems’ Fiberlink® 7820 User’s Manual
World Headquarters
5B Lyberty Way
Westford MA 01886 USA
Tel: (978) 263-5775
Fax: (978) 263-9755
artel.com
©2015 Artel Video Systems
All Rights Reserved.
Fiberlink and the starburst logo are
registered trademarks of
Artel Video Systems.
P/N CS200-128384-00_I
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