CSI Pure Digital Fiberlink 7222, Pure Digital Fiberlink 7224, Pure Digital Fiberlink 7226 User Manual

RGBHV Video with
Stereo Audio

Models 7222, 7224 and 7226

USER’S MANUAL

Tel: [phone] Fax: [phone]

Communications Specialties Pte Ltd

Tel: [phone] Fax: [phone]

Email: [e-mail]

WORLD HEADQUARTERS

55 Cabot Court

Hauppauge, N.Y. 11788 USA

www.commspecial.com

Email: [e-mail]

100 Beach Road

#22-09 Shaw Tower

Singapore 189702

P/N: 123189 Rev. B

CONTENTS

General Information ................................................... 2

Introduction ............................................................ 2

Technical Specifications ......................................... 2

Installation Instructions .............................................. 4

Installation Procedure ............................................. 4

System Connections ............................................... 5

Indicator LEDs ....................................................... 6

Operating Pointers and Troubleshooting ................... 6

Maintenance and Repairs ........................................... 7

Limited Warranty ....................................................... 8

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GENERAL INFORMATION

Introduction

The Pure Digital Fiberlink® 7222, 7224 and 7226 transmitter units
provide 4, 8 and 12 optical outputs respectively of RGBHV video with
stereo audio. Each output transmits over one single mode or multimode
fiber at 1310 nm wavelength. The units are designed to provide point­to-multipoint signal distribution and are compatible with all receiver
units within the 7220 Series.

The units’ all digital encoding delivers noise-free transmissions that
retain all of their initial parameters, regardless of fiber optic cable at­tenuation. System operation may be easily monitored using integral in­dicator LEDs on each unit that continuously signify the presence of
baseband video and audio signals.

Technical Specifications

Model Part Number Configurations:

Unit Type Part Number

Four output transmitter 7222-7S-PP*
Eight output transmitter 7224-7S-PP*
Twelve output transmitter 7226-7S-PP*

All units transmit at
1310 nm wavelength
over single mode or
multimode fiber. ST
connectors are
provided.

*PP Values (line cord): NA = N. America, AU = Australia,
EU = Europe, JP = Japan, UK = United Kingdom

Video:

Input Impedance ....................... RGB: 75 Ohms; H&V: Hi-Z

Input Level ............................... RGB: 714 mV p-p; H&V: 3 to 5 V p-p

H Sync Frequency Range ......... 31.5 to 60 kHz

V Sync Frequency Range ......... 30 to 85 Hz

Number of Video Channels ...... 1 RGBHV

RGB Format Supported ............ RGB with separate H and V

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Signal Connectors ................................ HD-15F

RGB Processing ................................... 24 bits, no compression or

scaling

Audio:

Number of Audio Channels .................. 2, unbalanced

Frequency Response ............................. +0/-0.5 dB, 20 Hz to 20 kHz

Input Impedance ................................... >24 k Ohms

Output Impedance ................................ <1 Ohm

Maximum Audio Level ........................ +10 dBu

THD+N ................................................. 0.005%; 20 Hz - 20 kHz

SNR (A-Weighted) ............................... 95 dB

Channel Phase Differential ................... +/-0.1

o

Crosstalk ............................................... Min. 95 dB (1 kHz)

Signal Connectors ................................ 3.5mm Stereo jack

Audio to Video Diff. Delay (skew) ..... <300 uS

Optical:

Operating Wavelength ......................... 1310 nm; MM or SM

Optical Fiber ........................................ 62.5/125 microns MM,

50/125 microns MM or
8-10/125 microns SM

Optical Connector ................................ ST

Class I Laser Product complies with FDA performance standard for
laser products, Title 21, Code of Federal Regulations, Sub-Chapter J

Miscellaneous:

Operating Temp. Range ........... -20 to +50 degrees C

Operating Power ...................... 95-250 volts AC, 47-63 Hz, 9 watts

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Loss Budget and Maximum Transmission Distance:

Wavelength Loss Budget (in dB) Distance* (in km)

1310 MM 0-15 0-0.75

1310 SM 0-15 0-30

*Distance specifications are only approximate and are not
guaranteed. Operating loss budget must not be exceeded.

DANGER! The transmitting element in the Pure Digital Fiberlink 7222, 7224 and
7226 transmitter units contain solid state Laser Diodes located within the
optical connectors. These lasers emit invisible infrared electromagnetic
radiation which can be harmful to human eyes. The radiation from these optical
connectors, if viewed at close range without a fiber optic cable connected to
the optical connector, may be of sufficient intensity to cause instantaneous
damage to the retina of the eye. Direct viewing of this radiation should be avoided
at all times.

INSTALLATION INSTRUCTIONS

Installation Procedure:

The Pure Digital Fiberlink
immediate use. Each model features indicator LEDs for monitoring pur­poses. The following instructions describe the typical installation pro­cedure and the function of the LED indicators.

1. Connect the video source to the video INPUT RGBHV connector on
the transmitter unit.

2. Connect the audio input signals to the transmitter AUDIO jack.

3. Optionally, connect the LOOP THROUGH RGBHV output to a com-

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7222, 7224 and 7226 units are ready for

puter monitor or other destination.

4. Optionally, connect the LOOP THROUGH AUDIO output to speakers

or other destination.

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5. Connect fiber optic cable(s) between each optical output that will be

used and a corresponding Pure Digital Fiberlink 7220 Series receiver

unit. BE SURE TO LEAVE PROTECTIVE CAPS ON ANY OUT-

PUTS THAT WILL NOT BE USED.

6. Turn unit on, causing the green POWER LED to light.

7. The VIDEO and AUDIO LEDs will give an indication as described

on the following page.

8. The system should now be operational.

System Connections:

The input and output connections for the Pure Digital Fiberlink
7222, 7224 and 7226 models are as follows:

Audio Connector INPUT and LOOP-THRU: 3.5mm stereo jack

Video Connector INPUT and LOOP-THRU: HD-15F connector

Video Pin Out: Input Loop-Through

1 Red In Red Out
2 Green In Green Out
3 Blue In Blue Out
4 N/C N/C
5 Ground Ground
6 Ground Ground
7 Ground Ground

8 Ground Ground

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9 N/C N/C
10 Ground Ground
11 N/C N/C
12 N/C N/C
13 Hor. Sync. In Hor. Sync Out
14 Vert. Sync In Vert. Sync Out
15 N/C N/C

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Indicator LEDs:

The Pure Digital Fiberlink® 7222, 7224 and 7226
transmitters each have three integral indicator LEDs that are used to
monitor the state of the unit.

The status of the LEDs are as follows:

Power: ON: (GREEN) Indicates that correct power has been applied.

Video: OFF: Indicates no video detected on the input.

BLINKING GREEN: Indicates either H or V sync detected at
the input but not both.

STEADY GREEN: Indicates both H and V sync detected on
the input.

Audio: OFF: Indicates no audio detected on the transmitter unit.

BLINKING: Indicates audio detected on the transmitter unit.

OPERATING POINTERS AND TROUBLESHOOTING

Optical Fiber:

The 7222, 7224 and 7226 transmitters operate with most
multimode (MM) and single mode (SM) optical fibers. All models within
the 7220 Series use the same 1310 nm wavelength and optics for trans­mitting over multimode or single mode fiber, but be aware that the type
of fiber you use will affect the system’s loss budget and the maximum
transmission distance that it can support.

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!

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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 whenever 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 VIDEO and AUDIO indicator LEDs should provide
the first clue as to the origin of an operational failure. If these are off, 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.

If, after reviewing the above possibilities, the system is still not oper­ating, please contact the Customer Service Department for further as­sistance.

MAINTENANCE AND REPAIRS

The Pure Digital Fiberlink® 7222, 7224 and 7226 transmitters have
been manufactured using the latest semiconductor devices and tech­niques that electronic technology has to offer. They have been designed
for long, reliable and trouble-free service and are not normally field
repairable. Should difficulty be encountered, Communications Special­ties 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 the optical connectors are free of dust or dirt that could interfere
with light transmission and that electrical connections are secure and
accurate. DANGER! Always turn off the transmitter’s power before

removing the optical fiber from the unit!

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 phone call.

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LIMITED WARRANTY

Communications Specialties, Inc. (CSI) warrants that for a period of
three years after purchase by the Buyer, the Pure Digital Fiberlink
7222, 7224 and 7226 transmitters will be free from defects in material
and workmanship under normal use and service. A Return Material Au­thorization (RMA) number must be obtained from CSI before any equip­ment is returned by the Buyer. CSI’s obligation under this warranty
will be limited, at its option, to either the repair or replacement of de­fective units, including free materials and labor. In no event shall CSI
be responsible for any incidental or consequential damages or loss of
profits or goodwill. CSI shall not be obligated to replace or repair equip­ment that has been damaged by fire, war, acts of God, or similar causes,
or equipment that has been serviced by unauthorized personnel, altered,

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improperly installed or abused.

RMA numbers and repairs can be obtained from:

Communications Specialties, Inc.

55 Cabot Court

Hauppauge, NY 11788 USA

Tel: [phone] Fax: [phone]

www.commspecial.com Email: [e-mail]

Or, in the Asia Pacific Region:

Communications Specialties Pte Ltd

100 Beach Road, #22-09 Shaw Tower

Singapore 189702

Tel: [phone] Fax: [phone]

Email: [e-mail]

Please have your serial number (located on the top label of the unit)
available with contacting us.

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