Fiberlink 7223, 7225, 7227 User Manual

USER’S MANUAL

P/N: 123202 Rev. A

Receiver Models 7223, 7225 and 7227

RGBHV Video with
Stereo Audio

WORLD HEADQUARTERS

55 Cabot Court

Hauppauge, N.Y. 11788 USA

Tel: [phone] Fax: [phone]

www.commspecial.com

Email: [e-mail]

Communications Specialties Pte Ltd

100 Beach Road

#22-09 Shaw Tower

Singapore 189702

Tel: [phone] Fax: [phone]

Email: [e-mail]

General Information ................................................... 3

Introduction ............................................................ 3

Technical Specifications ......................................... 3

Installation Instructions .............................................. 6

Installation Procedure ............................................. 6

System Connections ............................................... 7

Indicator LEDs ....................................................... 8

Operating Pointers and Troubleshooting ................... 9

Maintenance and Repairs ......................................... 10

Limited Warranty ..................................................... 11

CONTENTS

1

GENERAL INFORMATION

The Pure Digital Fiberlink® 7223, 7225 and 7227 receiver units for
RGBHV video with stereo audio provide a combination of multiple
baseband outputs and optical loop-through capabilities for drop-and­repeat system configurations. All three models are compatible with any
transmitter unit within the 7220 Series. They operate at 1310 nm wave­length and work with either single mode or multimode fiber. Following
are general descriptions of each unit:

7223 Receiver: 4 baseband outputs of high-res RGB with stereo audio

7225 Receiver: 1 baseband output of high-res RGB with stereo audio,
plus one optical loop-through output

7227 Receiver: 4 baseband outputs of high-res RGB with stereo audio,
plus one optical loop-through output

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
LEDs on each unit that continuously signify the presence of baseband
video and audio signals.

Introduction

Technical Specifications

Model Part Number Configurations:

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

Receiver Type Part Number

4 baseband outputs 7223-B7S
1 baseband output; drop & repeat 7225-B7S

4 baseband outputs; drop & repeat 7227-B7S

3

Miscellaneous:

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

Operating Power ...................... 9-24 volts AC or DC, 8 watts

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

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 7225 and 7227
receiver 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.

5

Audio to Video Differential

Delay (skew) .............................. <300 uS

®

System Connections:

The input and output connections for the Pure Digital Fiberlink

®

7223, 7225 and 7227 models are as follows:

Audio Connector OUTPUT(S): 3.5mm stereo jack

Video Connector OUTPUT(S): HD-15F connector

Video Pin Out: RGBHV; RGBHV 1-4

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

8 Ground

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

7

OPERATING POINTERS AND TROUBLESHOOTING

Optical Fiber:

The 7223, 7225 and 7227 receivers 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!
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.

9

LIMITED WARRANTY

Communications Specialties, Inc. (CSI) warrants that for a period of
three years after purchase by the Buyer, the Pure Digital Fiberlink

®

7223, 7225 and 7227 receivers 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,
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.

11