Fiberlink 7223 Manuel utilisateur

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: (631) 273-0404 Fax: (631) 273-1638

www.commspecial.com

Email: [email protected]

Communications Specialties Pte Ltd

100 Beach Road

#22-09 Shaw Tower

Singapore 189702

Tel: +65 6391 8790 Fax: +65 6396 0138

Email: [email protected]

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

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-and-

repeat system configurations. All three models are compatible with any

transmitter unit within the 7220 Series. They operate at 1310 nm wave-

length 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 at-

tenuation. 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

MAINTENANCE AND REPAIRS

The Pure Digital Fiberlink®7223, 7225 and 7227 receivers 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 repair-

able. Should difficulty be encountered, Communications Specialties

maintains a complete service facility to render accurate, timely and re-

liable 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 eas-

ily be solved by a simple phone call.

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 ......... 15 to 60 kHz

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

Number of Video

Channels Supported .................. 1 RGBHV

Number of Baseband

RGBHV Video Outputs ........... Model 7225: 1; Models 7223 & 7227: 4

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

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

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

Audio:

Number of Audio

Channels Supported ................. 2, unbalanced

Number of Baseband

Stereo Audio Outputs .............. Model 7225: 1; Models 7223 & 7227: 4

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 ....... +/-0.1o

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

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

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 trans-

mitting 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, al-

ways use the provided dust caps whenever optical connectors are ex-

posed 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 oper-

ating, please contact the Customer Service Department for further as-

sistance.

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

damagetotheretinaoftheeye.Directviewingofthisradiationshouldbeavoided

at all times.

Audio to Video Differential

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

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

Indicator LEDs:

The Pure Digital Fiberlink®7223, 7225 and 7227 receivers each have

three integral indicator LEDs that are used to monitor the state of the

unit.

The status of the LEDs are as follows:

Video: OFF: Indicates no video detected over the fiber and, as a

result, no video present on the output.

BLINKING GREEN: Indicates either H or V sync detected

over the fiber but not both

STEADY GREEN: Indicates both H and V sync detected over

the fiber and, as a result, active video detected by the receiver

unit.

Audio: OFF: Indicates no audio detected over fiber and, as a result,

no active audio detected by the receiver unit.

BLINKING: Indicates audio detected over fiber and, as a

result, active audio detected by the receiver unit.

INSTALLATION INSTRUCTIONS

Installation Procedure:

The Pure Digital Fiberlink®7223, 7225 and 7227 units are ready for

immediate use. Each model features indicator LEDs for monitoring pur-

poses. The following instructions describe the typical installation pro-

cedure and the function of the LED indicators.

1. Connect the RGBHV output(s) to computer monitor(s) or other

destination(s).

2. Connect the AUDIO output(s) to speakers or other destination(s).

3. Connect fiber optic cable from optical output of the 7220 Series trans-

mitter to the optical input of the 7223, 7225 or 7227 receiver unit.

4. If using the drop-and-repeat function available on the 7225 and 7227

units, then connect fiber optic cable from the optical output on these

units to the optical input on any 7220 Series receiver. If connecting to

additional 7225 or 7227 units for daisy-chain style signal distribution,

repeat this step as many times as necessary. If the optical output on a

7225 or 7227 receiver will not be used, be sure to leave the protective

cap on.

5. Apply power to all Pure Digital Fiberlink 7220 Series units. For the

7223, 7225 and 7227 units, refer to the DC power connection shown in

Figure 1.

6. When power is applied the green

POWER LED will light, indicating

the presence of operating power.

7. The VIDEO and AUDIO LEDs

will give an indication as described

on Page 8.

8. The system should now be operational.

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