10-Channel Video Multiplexer

with optional 2-way PTZ data

Models 3132 & 3133, 3332 & 3333

USER’S MANUAL

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Communications Specialties Pte Ltd

(Serving the Asia Pacific Region)

100 Beach Road

#22-09 Shaw Tower

Singapore 189702

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

Email: csiasia@commspecial.com

P/N : 120885 Rev. K



TABLE OF CONTENTS

User Information and Certification ------------------------------- 2

Quick Installation Guide ------------------------------------------ 3

General Information ----------------------------------------------- 3

Introduction ------------------------------------------------------ 3

Technical Specifications ----------------------------------------- 3

Installation Instructions-------------------------------------------- 5

Installation Procedure ------------------------------------------- 5

DIP Switch Settings and Alarm Mode ------------------------- 9

Optical Fiber --------------------------------------------------- 13

Troubleshooting ------------------------------------------------- 13

Statement of Warranty ------------------------------------------ 15

1



FCC STATEMENT

WARNING:

This equipment generates, uses and can radiate radio frequency en-

ergy and if not installed and used in accordance with the instruction manual, may

cause interference to radio communications. It has been tested and found to com-

ply with the limits for a Class A computing device pursuant to Subpart B of Part 15

of FCC Rules, which are designed to provide reasonable protection against such

interference when operated in a commercial environment. Operation of this equip-

ment in a residential area is likely to cause interference in which case the user, at

his own expense, will be required to take whatever measures may be required to

correct the interference.

UL INFORMATION

This product meets requirements for category E4 equipment utilizing the sample,

limits and methods described in AECO Test Report Number E173243, Project

01ME16348.

CE INFORMATION

Standards to which conformity is declared: EN 55103-1:1996 EN 55103-2:1997

Important Note: In order to meet CE conformity, the wires protruding from the data

connectors (both for transmitter and receiver) must be shielded. Use of copper or

metal tape is recommended. The shield must then be tied to the ground stud

provided above the connectors on each unit.

WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRONIC SHOCK, DO NOT

EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.

CAUTION: TO REDUCE THE RISK

OF ELECTRONIC SHOCK, DO NOT

REMOVE COVER. NO USER

SERVICABLE PARTS INSIDE. RE-

FER SERVICING TO QUALIFIED

SERVICE PERSONNEL.

This symbol alerts the user that

there are important operating

and maintenance instructions in

the literature accompanying this

unit.

CAUTION

RISK OF ELECTRIC

SHOCK. DO NOT OPEN..

This symbol warns the user of

uninsulated voltage within the

unit that can cause dangerous

electronic shocks.

2



QUICK INSTALLATION GUIDE

The following is a

quick installation guide

for the Pure Digital Fiberlink

®

10-Channel Video Multiplexer with optional 2-way PTZ data – models 3132,

3133, 3332 and 3333. It is intended for users familiar with the installation of fiber

optic transmission systems to get “up and running” in minimal time. For addi-

tional details, please consult the balance of this manual.

The transmitter and receiver

units are provided with brack-

ets that allow for mounting in

standard EIA 19 inch rack

frames or cabinets.

GENERAL INFORMATION

Introduction

The Pure Digital Fiberlink

®

10-Channel Video Multiplexer is designed to digitally

transmit ten standard, analog video signals (and optional 2-way RS-232, RS-

422 or RS-485 signals) over extended distances using standard single-mode or

multimode fiber optic cable. Whether it is configured to transmit video only or

video with two-way data, the system transmits all signals over a single fiber optic

cable.

3



The Pure Digital Fiberlink 10-Channel Video Multiplexer employs all digital pro-

cessing and transmission techniques, resulting in no visible degradation of the

transmitted signal up to the very limit of the system’s range. Low impedance back

terminated drivers at the receiving end assure perfect, reflection-free output sig-

nals at the monitors, switchers or other video equipment. In addition, the system

has been designed for rapid setup and easy fault diagnosis, with features such as

built-in diagnostic LEDs for each channel and a loss of signal/broken fiber alarm.

Technical Specifications

Number of Channels .................................... 10

Channel Bandwidth (-3 dB) ......................... 20 Hz to 6.5 MHz

Input /Output Impedance ............................. 75 ohms

Normal Input/Output Voltage ....................... 1 Volt peak-to-peak

Differential Phase (per RS-250)................... <1° typical

Differential Gain (per RS-250) ..................... <1.5% typical

Optical Loss Budget ........... 0-17dB - single-mode fiber; video only

0-16dB - single-mode fiber; video with data

0-8dB - multimode fiber; video with data

0-14dB - multimode fiber; video only

Signal to Noise Ratio at full path loss............ 60dB, CCIR weighting

Adjacent Channel Crosstalk ......................... Less than 75 dB

Operating Wavelength .................................. 850 nm/1310 nm - multimode

1550nm/1310 nm - single-mode

Data Protocols Supported ............................. RS-232, RS-422, RS-485

(2-wire and 4-wire)

4



Optical Fiber ................................................. 8-10/125 single-mode

62.5/125 multi-mode

Optical Connectors ....................................... FCPC or ST

Signal Connectors ......................................... BNC for video

removeable screw terminal for

optional data

Operating Temperature Range ..................... 0 to +55 degrees C

Physical Size................................................. 16.75"L x 10 "W x 1.75"H

Operating Power .......................................... 95 to 250 VAC 50/60 Hz

Alarm Relay: ................................................ Contact Rating - 2A, 32VDC resistive

0.4A, 115VAC

INSTALLATION INSTRUCTIONS

Installation Procedure

The Pure Digital Fiberlink 10-Channel Video Multiplexer transmitter and receiver

units do not require any alignment or adjustments during installation. There are

indicators LEDs on the units for monitoring purposes as well as two DIP switches

that are used to configure the various alarm and data options. The instructions

that follow indicate the typical installation procedure as well as the use of these

indicators and switches.

For Video Function Setup (models 3132, 3133, 3332 and 3333):

1. Set the rear panel DIP switches on the transmitter for the alarm sensing

conditions desired. (Refer to Page 9 of this manual).

2

If connecting more than one Fiberlink unit on one line (daisy chaining) while in

either the RS-422 or RS-485 4-wire modes, you must set the unit to the RS-

485 4-wire multidrop mode.

5



3. Set the rear panel DIP switches on the receiver for the alarm sensing condi-

tions desired. (Refer to Page 9 of this manual).

4. Mount the transmitter and receiver in the locations where they will be used.

5. Connect suitable line cords to the IEC connectors on the rear panels of both

the transmitter and receiver. Both units operate from 95 to 250 VAC 50/

60Hz.

6.

Connect one to ten video sources to the numbered BNC connectors on the

back of the transmitter. Each applied video signal should measure 1 V-pp.*

7.

Connect one end of the fiber optic cable that will be used to OPTICAL

PORT VIDEO of the transmitter.

8.

Connect the other end of the fiber optic cable to OPTICAL PORT VIDEO

on the back of the receiver.

9.

Connect one to ten video monitoring devices to the numbered BNC connec-

tors on the back of the receiver. The output from each BNC will correspond

to input provided to the same-numbered BNC on the transmitter.

10. Turn on the power for both the transmitter and receiver using the rear-panel

power switch on each unit. It is preferable to apply power to the receiver unit

first.

When power is applied, the green POWER LED on each unit will signify the

presence of operating power. The green TX on the transmitter and RX on the

receiver LEDs should also light, indicating the presence of an optical bit stream

and link synchronization. Depending on the rear-panel DIP switch settings, the

red ALARM LED and ALARM sounder on each unit may also activate. The

sounder may be silenced using the SOUND switch on the front panel of each unit.

*Note: In order for the system to work properly, it is sometimes necessary to

transmit at least two video channels over the system, using non-adjacent inputs

on the transmitter unit. Failure to do may result in the receiver unit's inability to

"lock" to the incoming signal and achieve link synchronization.

6



For Data Function Setup: (models 3332 and 3333):

1. Set the rear panel DIP switches on the transmitter for the desired data

protocol (RS-232, RS-422 or RS-485). (Refer to Page 10 of this manual.)

2. Set the rear panel DIP switches on the receiver for the desired data protocol

(RS-232, RS-422 or RS-485). (Refer to Page 10 of this manual.)

3. Data terminal block positions 1 through 6 can be used as data inputs or

outputs depending on the protocol selected. (Refer to Page 11 of this manual).

4. After the terminal blocks have been wired appropriately, plug them into the

rear panel connectors marked DATA/ALARM on both transmitter and re-

ceiver.

5. If there isn’t a fiber already connected between the OPTICAL PORT VIDEO

connector on both the transmitter and receiver units, connect one. This fiber

is used to carry both the video signal and the data signal from transmitter to

receiver.

6. Turn on the power for both the transmitter and receiver using the rear-panel

power switch on each unit.

When power is applied, the green POWER LED on each unit will signify the

presence of operating power. If input data is present on the DATA connector of

the receiver unit, then both the transmitter RX LED and the receiver TX LED

should also light. If fiber is connected but there is no input data, both the transmit-

ter RX LED and the receiver TX LED will remain off.

7



NOTE TO USERS OF MODELS 3332 and 3333 (Video and

Bi-directional PTZ data over one fiber)

These transmitter and receiver units are designed with a coupler that allows the

same fiber to both transmit and receive information. If the connector on either unit

does not properly match up with the tip of fiber within the transmitting fiber optic

cable, there is a possibility that light intended for transmission will be reflected

back into the coupler and be interpretted by the transmitter or receiver unit as

part of a received signal. When this happens, the RX light on the unit will become

lit, even though the unit is not really receiving any transmitted signal. In order to fix

this problem, simply apply a small amount of coupling gel to the tip of fiber before

inserting it into the connector. This should work to create a better match between

connector and fiber and eliminate any reflected light.

The single-mode version of the 10-Channel Video Multiplexer trans-

mitter uses a solid state Laser Diode located in the optical connector

of the unit. This device emits invisible infrared electro-magnetic ra-

diation which can be harmful to human eyes. The radiation from this

optical connector, 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. As a result, di-

rect viewing of this radiation should be avoided at all times.

8



DIP Switch Settings and Alarm Mode

Both the transmitter and receiver units have rear panel DIP switches that are used

to configure the alarm sensing mode. The function and settings for these DIP

switches are as follows:

12 Position DIP Switch - Alarm Enable - Transmitter and Receiver

Switch positions 1 through 10:

UP indicates alarm will be triggered upon loss of video for the channel selected.

DOWN signifies that the alarm will not be triggered for the channel. The number

of the switch position corresponds to the number of the channel. Any or all

channels may be enabled as desired.

Switch position 11:

UP indicates alarm will be triggered upon loss of primary VIDEO/DATA serial

stream carrier from transmitter to receiver units. DOWN signifies that the alarm

will not be triggered.

Switch position 12:

UP indicates alarm will be triggered upon loss of data from receiver to transmitter

units. DOWN signifies that the alarm will not be triggered.

9



12 Position DIP Switch - Data Configuration - Transmitter and Receiver

Switch positions 1-3, 7-10:

Switch positions 1-3 are used to select desired protocol. Switch positions 7 & 8 are

used to select 4 wire or 2 wire modes for 485. Switch positions 9 & 10 are used to

switch in a 120 Ohm terminating resistor. The following table lists how these settings

are used together for each available configuration:

Protocol

1

RS-232

U

RS-422/485

4-wire point to point

U

RS-485

2-wire Auto Tx/Rx

U

RS-485

4-wire multidrop

D

RS-485

2-wire Zero Tx/Rx

D

2

U

D

D

D

D

Switch Position

3

7 8

9 10

U

U U

U U

U

U U

D D

D

D D

D U

D

D D

D U

U

D D

D U

Switch position 9:

When switch is down, a 120 Ohm termination resister is

applied to data input.

Switch position 10:

When switch is down, a 120 Ohm termination resister is

applied to data output.

Switch positions 11 & 12:

not used.

Switch positions 4-6:

Switch positions 4 - 6 are used to select the time interval that the unit will wait

before switching back to the receive mode (tri-state) in the RS-485 two wire

configuration only.

Baud Rate

2400

4800

9600

19.2K

Time

4.73ms

2.20MS

1.10MS

620

µsec

Position 4 Position 5 Position 6

DOWN

UP

UP

DOWN

DOWN

UP

DOWN

DOWN

DOWN

38.4K

57.6K

76.8K

300µsec

180µsec

150µsec

UP

UP

UP

UP

10

DOWN

DOWN

UP

UP

UP

DOWN

DOWN

UP



Data Portion of Back Panel Connector (Pins 1-6):

Data terminal block positions 1 through 6 can be used as data inputs or outputs

depending on the protocol selected.

RS-232

Position 2

Position 4

Position 1

RS-422

Position 2

Position 3

Position 4

Position 5

Position 1

RS-485 4-Wire

Position 2

Position 3

Position 4

Position 5

Position 1

Signal to be transmitted (+) out over fiber

Signal to be transmitted (-) out over fiber

Signal being received (+) in from fiber

Signal being received (-) in from fiber

Shield Ground

Signal to be transmitted (+) out over fiber

Signal to be transmitted (-) out over fiber

Signal being received (+) in from fiber

Signal being received (-) in from fiber

Shield Ground

Signal to be transmitted out over fiber

Signal being received in from fiber

Signal Common

11



RS-485 2-Wire

Position 2

Position 3

Position 1

Signal being transmitted or received (+) over fiber

Signal being transmitted or received (-) over fiber

Shield Ground

Alarm Portion of Back Panel Connector ((Pins 7-10):

Note that when the alarm is triggered, a set of isolated SPDT contacts (rated at

0.4A, 115VAC 50/60 Hz or 2A, 32 VDC resistive) will be activated. These

contacts are available at the rear panel ALARM terminal block and may be used

for remote signaling applications. Connections to this terminal block are as follows:

Position 8

Position 9

Position 10

Normally closed for no alarm condition; opens for alarm.

Common

Normally open for no alarm condition; closes for alarm.

When an alarm condition occurs, the red ALARM LED on the front panel will

begin to blink, the internal piezo sounder will beep and the external contacts will

activate. Switches on the front panel of the transmitter or receiver allow you to

turn off the sounder, but the ALRM LED will continue to blink and the external

contacts will remain activated until the fault is corrected.

12



Optical Fiber

The Pure Digital Fiberlink 10-Channel Video Multiplexer is designed to work

with most single mode and multimode optical fiber.

TROUBLESHOOTING

GENERAL:

Various indicator LEDs are present on both the transmitter and receiver units.

These may be used either for monitoring operation or for troubleshooting, should

problems occur.

POWER LED (green):

VIDEO DETECT (green):

lights when correct operating power

is present.

lights when a video signal is present

at the respective input or output BNC

connector.

In

video only

systems, the TX LED on the trans-

mitter lights when the master serial data stream

has been generated and has reached the trans-

mitting Laser Diode in the transmitter unit. The

RX LED on the receiver unit lights when that

unit’s receiving circuitry detects receipt of the

signal. In addition to the above conditions, in

video with PTZ

systems, the TX LED on the

receiver unit will light when the returning serial

data stream has been generated and has

reached the transmitting Laser Diode within the

receiver unit. The RX LED on the transmitter

unit will light upon detecting receipt of that

signal.

CARRIER LED (green):

13