Artel FiberLink 1900 Series Manuale utente

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MANUAL

Optic IRIG Transmission System

Installation and Operations

Manual

FiberLink

1900 Series

Page 2 FiberLink 1900 Series User’s Manual

FiberLink 1900 Series

Contents

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

Quick Installation Guide ...................................................4

Technical Specications ...................................................5

Theory of Operation ......................................................8

Functional Block Diagram .................................................8

Installation Instructions for XA-1900 and XA-1903..........................9

Installation Procedure ................................................9

Installation of XA/RA-1900 in 6000A Chassis...........................9

Signal and Power Connections........................................9

Operating Pointers ..................................................10

Installation Instructions for RA-1900 ......................................12

Installation Procedure ...............................................12

Installation of XA/RA-1900 in 6000A Card Cage.......................12

Signal and Power Connections.......................................13

Operating Pointers ..................................................14

IRIG System Conguration................................................15

Interface Troubleshooting ................................................16

Overall System Checkout and Troubleshooting Techniques ................16

Maintenance.............................................................18

Contents

Page 3FiberLink 1900 Series User’s Manual

FiberLink 1900 Series

Introduction

The FiberLink XA-1900 IRIG Fiber Optic Transmitter is designed to convert wide band IRIG

analog signals into modulated light for transmission over ber optic cables. The transmitter

employs linear, intensity modulation and is suitable for use with most optical bers. The

XA-1900 employs a single ended, unbalanced input which is compatible with all IRIG

input formats. There is only one operating control on the XA-1900 series. This is an input

attenuator, designed to allow input signals larger than the normal 1 volt rms level to be

accommodated. The XA-1903 is a 10 channel optical output version of the XA-1900 and is

designed for IRIG signal distribution applications.

The RA-1900 IRIG Fiber Optic Receiver is the companion receiver for the XA-1900 and

XA-1903. It converts the modulated light from a ber optic cable back into an exact

replica of the original transmitted signal. The RA-1900 is intended for driving single ended,

unbalanced loads in accordance with IRIG standards. There is only one operating control on

the RA-1900 series. This is an output level control and is used to compensate for the optical

attenuation of the ber being used.

Introduction

NOTE:

This manual references the following discontinued items:

XR-1900 - No longer in production, no inventory is available.

MCR-1000A - No longer in production, no inventory is available.

Page 4 FiberLink 1900 Series User’s Manual

FiberLink 1900 Series Technical Specications | Precautions

Quick Installation Guide

The following is a quick installation guide for the FiberLink XA-1900 and RA-1900. It is

intended for users familiar with the installation of ber optic transmission systems to get

“up and running” in minimal time. For additional details, or for installation of the XA-1903

please consult the balance of this manual.

Standalone Version

Rackmountable Versions

The FiberLink XA/RA-1900 are available in card versions that t the FiberLink 6000A rack-

mountable card cage. See ordering information on page 6 of this manual.

The FiberLink XA/RA-1900 box version may also be used with an existing MCR-1000A rack-

mountable card cage, which is no longer in production. AP-1000 Mounting brackets are

available for systems with existing MCR-1000A card cages.

Optical Conector IRIG Input or

Output BNC

Power

Connector

Note that Pin D is Connected

to the Housing

Pin B* = +15 to +24 VDC

Pin A* = 14 to 18 VAC 50/60 Hz

Pin D = DC or AC Common

XA-1900A

Test Point

Not used on

RA-1900A

*Use either AC (Pin A)

*or DC (Pin B). DO

*NOT USE BOTH!

RA-1900A

Output Level

Adjustment

Not used on

XA-1900A

Page 5FiberLink 1900 Series User’s Manual

FiberLink 1900 Series Technical Specications

General Specications

Number of Fibers XA-1900 & RA-1900: 1 ber

XA-1903: 10 bers

Operating Temperature -20 to +60 Degrees C

Operating Power (per unit) +15 to +25 volts DC @ 250 mA or

14 to 18 volts AC, 50/60 Hz

Dimensions XA-1900 & RA-1900:

5 W x 1.25 H x 2.5 L (inches)

127 W x 32 H x 64 L (mm)

XA-1903:

19 W x 1.75 H x 6.5 L (inches)

483 W x 45 H x 165 L (mm)

Weight XA-1900 & RA-1900:

Approx. 1 lb; 0.45 kg

XA-1903:

Approx. 3 lbs; 1.36 kg

Optical Connectors ST: Multimode, ST or FCPC: Single Mode

Indicator LEDs Box: None

Card Transmitter: Power, IRIG present, Alarm

Card Receiver: Power, IRIG present, Alarm

Optical Wavelength MM: 850 nm & 1310 nm

SM: 1310 nm

Optical Fiber 50 or 62.5 micron (MM) multimode ber,

8/10 micron (SM) single mode

System Delay < 5 uSec; Measured from a Transmitter input to a

Receiver output with 1 meter of ber. Does not

include any additional length of ber. Consult

ber cable manufacturer for specic propagation

delay. An approximate ber cable propagation

delay is approximately 5 uSec/km.

MTBF XA-1900: 195,000 hours

RA-1900: 181,000 hours

XA-1903: 74,000 hours

Plastic Material UL-94 V0 or V1 Standard

Page 6 FiberLink 1900 Series User’s Manual

FiberLink 1900 Series Technical Specications

Number

Part Number Description of Fibers

XA-1900-1 Transmitter, 850 nm, Multimode, Box, ST 1

XA-1900-C1S Transmitter, 850 nm, Multimode, Card, ST 1

XA-1900-3 Transmitter, 1310 nm, Multimode, Box, ST 1

XA-1900-C3S Transmitter, 1310 nm, Multimode, Card, ST 1

XA-1900-7 Transmitter, 1310 nm, Single Mode, Box, FCPC 1

XA-1900-7-ST Transmitter, 1310 nm, Single Mode, Box, ST 1

XA-1900-C7S Transmitter, 1310 nm, Single Mode, Card, ST 1

RA-1900-1 Receiver, 850 nm, Multimode, Box, ST 1

RA-1900-C1S Receiver, 850 nm, Multimode, Card, ST 1

RA-1900-3 Receiver, 1310 nm, Multimode, Box, ST 1

RA-1900-C3S Receiver, 1310 nm, Multimode, Card, ST 1

RA-1900-7 Receiver, 1310 nm, Single Mode, Box, FCPC 1

RA-1900-7-ST Receiver, 1310 nm, Single Mode, Box, ST 1

RA-1900-C7S Receiver, 1310 nm, Single Mode, Card, ST 1

XA-1903-1 Transmitter, 850 nm, Multimode, ST 10

XA-1903-3 Transmitter, 1310 nm, Multimode, ST 10

XP-1000A 115 volts AC, 50/60 Hz plug-in adaptor

XP-1001 230 volts AC, 50/60 Hz plug-in adaptor

AP-1000 Adapter Plate for use with the MCR-1000* card cage

• Please note that the card versions of these products are compatible with the model 6000A card

cage used with most FiberLink products and uses 1 slot.

• Box versions require the XP-1000A power supply, not included.

• The XA-1903 is a 1RU 19” rackmountable enclosure with internal power supply.

* Box versions can be adapted for use with the discontinued MCR-1000 rack by ordering the

AP1000 adapter plate.

Ordering Information

Page 7FiberLink 1900 Series User’s Manual

FiberLink 1900 Series Theory of Operation

Data Specications

Number of Channels 1

Number of Outputs per Channel XA-1900 & RA-1900: 1, XA-1903: 10

IRIG Compatibility A through H

System Bandwidth (+0, -3 dB) 20 Hz to 100 kHz

Input/Output Load Impedance 600 Ohms nominal

Input/Output Signal Voltage 1 volt rms

Signal/Noise Ratio 67 dB typical

Noise Floor (full bandwidth) 1.3 mv rms maximum

Wavelength Loss (dB) Distance (Km)

850nm MM 0-10dB 0-3.5 (62.5u)

850nm MM 0-10dB 0-4 (50u)

1310nm MM 0-13dB 0-10 (62.5u)

1310nm MM 0-13dB 0-12 (50u)

1310nm SM 0-13dB 0-20

* For system to operate properly, operating loss budget must not be exceeded.

Operating Loss Budget & Maximum Usable Distance*

Page 8 FiberLink 1900 Series User’s Manual

FiberLink 1900 Series Installation Instructions for XA-1900 and XA-1903

Theory of Operation

The FiberLink XA-1900 converts an incoming time code signal into a varying current that

intensity modulates the transmitting LED located in the optical connector on the unit.

The modulated light is then applied to a ber optic cable.

The RA-1900 detects the light coming from a ber optic cable by a photodiode located in

the optical connector on that unit. The small current produced by the photodiode is

amplied and applied to a driver stage. This stage provides the proper output voltage to

drive the required load. The output level adjustment is used to set the output audio to the

proper level.

Transmit

LED/LD

LED/LD Driver

Input Buer Amp

IRIG

Output

IRIG

Input

Attenuator

XA-1900 IRIG Transmitter Block Diagram

RA-1900 IRIG Receiver Block Diagram

IRIG

Output

Output DriverCurrent/Voltage

Converter

IRIG Output Level

Receive

Photo-

Diode

600

Page 9FiberLink 1900 Series User’s Manual

FiberLink 1900 Series

Transmit

LED/LD

IRIG

Output

Installation Procedure

The FiberLink XA-1900 is supplied pre-aligned for use with an input signal of 1 volt rms. It

may be put into service by simply making the appropriate signal and power connections.

When input voltages in excess of the normal 1 volt rms level are to be accommodated, the

following procedure (in particular, steps 2, 3, and 4) should be followed:

1. It will be necessary to have a source of +15 to +25 volts DC or 14 to 18 volts AC 50/60

Hz. Be certain to make all connections carefully and check that the correct pins are

being used.

2. Turn the input attenuator , located in the white plastic bushing between the electrical

connectors on the XA-1900, fully clockwise (10 - 15 turns will be (adequate). In the

XA-1903, this attenuator is located on the internal P/C board, near the input BNC

connector, and is labeled R1. When using the XA-1903, also set the rear panel input

switch to the 600 ohm position.

3. Apply power and, with no signal applied, connect an oscilloscope between the test

jack, located next to the optical output connector and the case of transmitter for the

XA-1900, and on the P/C board for the XA-1903. Any of the points labeled TP1, TP2,

TP3, TP4 or TP5 may be used. The oscilloscope will show the current owing through

the transmitting LED, which exactly corresponds to the signal being transmitted.

4. Apply the signal to be transmitted and slowly turn the attenuator until the signal

appears on the scope. Now continue to turn the attenuator until a maximum

peak-to-peak amplitude of 0.8 volts is obtained. This point constitutes full modulation.

If the signal level is increased further, distortion and clipping will occur. The best level

is just below the clipping point.

5. Once this adjustment has been made, the transmitter is ready for operation.

Installation of XA-1900 and RA-1900 in the 6000A Card Cage

The 6000A rack-mountable chassis is a 20 slot, 3RU chassis. The XA-1900 and RA-1900 are

available in card versions that t the 6000A rackmount chassis. The adjustment Potentiom-

eters are located on the front of the XA-1900 and RA-1900 cards.

The XA-1900 and RA-1900 cards take advantage of the Alarm function of the 6000A chassis

when using the 6020A ALARM Card. To activate the ALARM function, locate the ALARM

switch on the printed circuit board and set Position 1 to ON. The transmitter ALARM func-

tion will detect loss of input signal. The receiver ALARM function will detect loss of signal or

loss of optical input.

Installation Instructions for XA-1900 and XA-1903

Page 10 FiberLink 1900 Series User’s Manual

FiberLink 1900 Series Installation Instructions for XA-1900 and XA-1903

Signal and Power Connections

The XA-1900 box may be powered from an external AC or DC power supply.

Pin connections are as follows:

The transmitting element in the transmitter unit may

contain a solid state Laser Diode located in the optical

connector. This device emits invisible infrared electromag-

netic 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 sucient intensity to cause

instantaneous damage to the retina of the eye. Direct

viewing of this radiation should be avoided at all times!

PIN For DC Operation For AC Operation

A No Connection 14 to 18 volts 50/60Hz

B +15 to +25 volts No Connection

D DC Common AC Common

E No Connection No Connection

H No Connection No Connection

PIN Function

Center Pin Signal

Outer Shell Signal return and ground

Please note that AC and DC common is connected to the enclosure.

The mating power connector for this system is an Amphenol 126-223 or equivalent.

For operation from 115 VAC 60Hz, a Artel Video Systems XP-1000A plug-in adapter may be

used. This adapter is supplied with the appropriate connector installed.

Signal connections are made via a standard BNC type signal connector.

Pin connections are as follows:

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