Vicon V732 User manual

XX115

MODEL V732

DIGITAL VIDEO / BIDIRECTIONAL

DATA TRANSMISSION SYSTEM

VICON INDUSTRIES INC., 89 ARKAY DRIVE, HAUPPAUGE, NEW YORK 11788

TEL: 631-952-CCTV (2288) FAX: 631-951-CCTV (2288) TOLL FREE: 800-645-9116

UK: +44 (0) 1489 566300 INFOFAX: 800-287-1207 WEB www.vicon-cctv.com

24-Hour Technical Support: 800-34-VICON (800-348-4266)

Vicon part number 8009-8115-00-00 Section 10 Rev 1002

Dear Valued Customer:

Thank you for selecting Vicon systems and products

for your video needs.

Since Vicon's beginning in 1967, our only business

has been the design, engineering, and production of

the highest quality video systems and equipment for

use in a wide variety of security, safety, control, sur-

veillance, and communication applications.

We stand behind the quality and dependability of every product with an

industry leading Beneficial Use warranty.

If you are not satisfied with a Vicon product or service, I would like to know.

Your complete satisfaction is the mission of every Vicon employee.

Sincerely,

Kenneth M. Darby

President

IMPORTANT SAFEGUARDS

GRAPHIC SYMBOL EXPLANATION

The lightning flash with arrowhead symbol, within an

equilateral triangle, is intended to alert the user to the pres-

ence of uninsulated "dangerous voltage" within the prod-

uct's enclosure that may be of sufficient magnitude to con-

stitute a risk of electric shock.

The exclamation point within an equilateral triangle is

intended to alert the user to the presence of important oper-

ating and maintenance (servicing) instructions in the litera-

ture accompanying the unit.

IMPORTANT

1. Read Instructions - All the safety and operating instruc-

tions should be read before the video product is operated.

2. Retain Instructions - All the safety and operating

instructions should be retained for future reference.

3. Heed Warnings - All warnings on the video product and

in the operating instructions should be adhered to.

4. Follow Instructions - All operating and use instructions

should be followed.

5. Cleaning - Step a applies to equipment that can be dis-

connected from the CCTV system without seriously jeop-

ardizing security. Step b applies to equipment that must

operate continuously such as video switching equipment at

military installations.

a. Disconnect this video product from its power source

before cleaning. Do not use caustic, abrasive, or

aerosol cleaners. Use a damp cloth for cleaning.

b. Use a damp cloth to clean the equipment. Do not allow

moisture or liquids to enter any vents. Do not use caus-

tic, abrasive, or aerosol cleaners.

6. Attachments - Do not use attachments not recommend-

ed by Vicon as they may cause hazards.

7. Water and Moisture - Do not use this video product in

any location where it may be exposed to water or moisture.

This does not apply to outdoor camera housings, outdoor

pan-and-tilt drives, and other equipment designed for direct

exposure to outdoor environments.

8. Accessories - Do not place this video product on any

unstable surface or table. The video product may fall, caus-

ing serious injury to a person and serious damage to the

video product. Use only with a mounting accessory recom-

mended by Vicon, or sold with the video product. Any

mounting of the video product should follow Vicon's instruc-

tions, and a mounting accessory recommended by Vicon

should be used.

9. Ventilation - Slots and openings in the cabinet are pro-

vided for ventilation and to ensure reliable operation of the

video product and to protect it from overheating, and these

openings must not be blocked or covered. The openings

should never be blocked by placing the video product on a

rug or other similar surface. This video product should never

be placed near or over a radiator or heat register. This video

product should not be placed in a built-in installation such as

a bookcase or rack unless proper ventilation is provided or

Vicon's instructions have been adhered to.

10. Power Sources - This video product should be operat-

ed only from the type of power source indicated on the

marking label. If you are not sure of the type of power sup-

plied to your installation site, consult your Vicon dealer or

local power company. For video products intended to oper-

ate from battery power, or other sources, refer to the oper-

ating instructions.

11. Grounding - This applies to video products equipped

with a 3-wire grounding-type plug, a plug having a third

(grounding) pin. This plug only fits into a grounding-type

power outlet. This is a safety feature. If you are unable to

insert the plug into the outlet, contact your electrician to

replace your obsolete outlet. Do not defeat the safety pur-

pose of the grounding-type plug.

12. Power-Cord Protection - Power supply cords should

be routed so that they are not likely to be walked on or

pinched by items placed upon or against them, paying par-

ticular attention to cords at plugs, convenience receptacles,

and the point where they exit from the video product.

13. Outdoor Cable Grounding - If an outside

cable system is connected to the video product, be

sure the cable system is grounded so as to pro-

vide some protection against voltage surges and

built-up static charges. Section 810 of the National

Electrical Code, ANSI/NFPA 70-1984, provides

information with respect to proper grounding of the

lead-in wire to an antenna discharge unit, size of

grounding conductors, location of antenna-dis-

charge unit, connection to grounding electrodes,

and requirements for the grounding electrode.

14. Lightning - For added protection for this

video product when it is not used for long periods

of time, disconnect it from its power source and

from the cable system. This prevents damage to

the video product due to lightning and power-line

surges.

15. Power Lines - An outside cable system

should not be located in the vicinity of overhead

power lines or other electric light or power circuits,

or where it can fall into such power lines or circuits.

When installing an outside cable system, extreme

care should be taken to keep from touching such

power lines or circuits as contact with them might

be fatal.

16. Overloading - Do not overload wall outlets

and extension cords as this can result in a risk of

fire or electric shock.

17. Object and Liquid Entry - Never push

objects of any kind into this video product through

openings as they may touch dangerous voltage

points or short out parts that could result in a fire

or electric shock. Never spill liquid of any kind on

the video product.

18. Servicing - Do not attempt to service this

video product yourself as opening or removing

covers may expose you to dangerous voltage or

other hazards. Refer all servicing to qualified serv-

ice personnel.

19. Damage Requiring Service - Disconnect this

video product from its power source and refer

servicing to qualified service personnel under the

following conditions. Note that step c does not

apply to outdoor camera housings, outdoor pan-

and-tilt drives and other equipment specifically

designed for direct exposure to outdoor environ-

ments.

a. When the power-supply cord or plug is dam-

aged.

b. If liquid has been spilled, or objects have fall-

en into the video product.

c. If the video product has been exposed to rain

or water.

d. If the video product does not operate normally

by following the operating instructions. Adjust

only those controls that are covered by the

operating instructions, as an improper adjust-

ment of other controls may result in damage

and will often require extensive work by a

qualified technician to restore the video prod-

uct to its normal operation.

e. If the video product has been dropped or the

cabinet has been damaged.

f. When the video product exhibits a distinct

change in performance - this indicates a need

for service.

20. Replacement Parts - When replacement

parts are required, be sure the service technician

has used replacement parts specified by Vicon or

that have the same characteristics as the original

part. Unauthorized substitutions may result in fire,

electric shock, or other hazards.

21. Safety Check - Upon completion of any serv-

ice or repairs to this video product, ask the service

technician to perform safety checks to determine

that the video product is in proper operating condi-

tion.

GENERAL

This manual is a guide to the installation and operation of

the V732 series fiber optic video and data transmission

system. Please read the entire manual before installing

the equipment.

NOTE: The series numbers V732T and V732R are used

to describe all models of transmitters and receivers

unless noted otherwise.

The V732 series video and data transmission system

offers simultaneous transmission of 8-bit video and bi-

directional multiprotocol data (MPD). The V732 system

operates over one multimode fiber.

A complete system consists of a transmitter, V732T, and a

receiver, V732R. Units are designed for standalone

operation or for installation in Vicon’s V515R-PS or

V517R-PS Card Cages (V732R-R).

Both the V732T transmitter and V732R receiver have one

video input, one data input/output and one fiber connector.

Unpacking the Unit

In the event that anything is missing from the following

list, contact your authorized Vicon representative.

V732T Transmitter or V732R Receiver

Instruction manual

Save the original packing materials in case it becomes

necessary to return the unit. Refer to the Shipping

Instructions at the end of this manual.

MODULE SETUP

Data Selection

NOTE: The DATA SELECT switch on standalone units, or

SW1 on rack cards, is shipped in the Disabled setting.

Using the rotary DATA SELECT switch, select a valid data

format according to the Data Select Settings listed in

Table 1.

NOTE: If the link is going to support RS-485, refer to

RS-485 APPLICATION NOTES on page 8.

Alarm Jumper

Rack cards are supplied with an alarm function that goes

active if the optical signal input to the card fails. The

alarm is always indicated on the front panel of the card by

a red LEVEL/LOSSTM LED. The alarm may also be out-

put to the rack power supply, where a sonalert (audible

alarm) and alarm output contact closure may be activat-

ed.

The alarm is set to ON (ACTIVE) at the factory. If the

alarm output is not desired, move jumper W3 to the OFF

position. Refer to Figure 2 on page 3.

NOTE: Setting the Alarm jumper W3 to OFF does not

effect the operation of the LEVEL/LOSSTM LED. Loss of

optical signal will always be indicated by a red

LEVEL/LOSSTM LED.

Video Format/Test Pattern Generator

The V732 links support both NTSC and PAL video stan-

dards without adjustment. The V732T transmitter and

V732R receiver have jumpers to select the video format

and enable the test pattern generator. To set the video

format for the test pattern generator:

NOTE: In order for the test pattern generator to operate

properly, both the transmitter and receiver must be set to

the same format.

1. On rack modules, set jumper W2 to the NTSC, PAL,

or OFF position. See Figure 2.

2. On surface mount units, switch S1, located on the

rear of the unit, configures the test pattern generator.

Set switch S1 position 1 to ON to enable test pat-

terns. Set switch S1 position 2 to ON for NTSC or to

OFF for PAL. See Figure 3.

V732 DIGITAL VIDEO / BIDIRECTIONAL

DATA TRANSMISSION SYSTEM

continued on page 3

FIGURE 1: SYSTEM DIAGRAM

one

optical fiber

Video Out

Data In/Out

Video In

Data In/Out

V732T

V730R

FIGURE 2: RACK-MOUNT RECEIVER

FIGURE 3: STANDALONE MODULE, V732T AND V732R

TEST

PAT

GEN

ALARM

PAL

NTSC

OFF

DATA SELECT

SWITCH (SW1)

RECEIVE

TRANSMIT

DATA

2MODEL V732

OPTICAL

CONNECTOR

VIDEO

CONNECTOR

DATA SELECT

SWITCH

DATA

CONNECTOR

POWER

CONNECTOR

PIN 1

VIDEO TEST PATTERN SELECT

(LOCATED ON REAR OF MODULE)

ENABLE

DISABLE 12

ON NTSC

PAL

Power Connections

Connection

+12 –16 VDC

24 VAC

Ground

DTMF/FSK Mode

The V732 includes a special data mode to transport

DTMF/FSK control signals. This configuration is bidirec-

tional, full duplex. This feature is included in the V732 as a

control signal data path used on some PTZ control equip-

ment. It can be utilized in two ways (refer to Table 9):

1. (Single-ended stereo operation) For stereo operation,

left and right channels are referenced to ground.

2. (Differential operation, single channel) In this configu-

ration, most popular with DTMF systems, signal is input

differentially to Diff In + and Diff In - pins. Likewise, sig-

nal is output on Diff In + and Diff In - pins.

In DTMF/FSK mode, DATA IN and DATA OUT LEDs vary in

intensity based on the input levels. Levels less than 24 dBu

result in the corresponding LED being OFF. The LED will

glow brighter green and the level increases to 0 dBu.

Data Translation

The data translation capability of the V732 series is unique

in the industry. It allows translation from one format to

another, thus eliminating the need for external translation

devices.

The translation is in the physical layer only; it cannot inter-

pret specific protocols, nor do command translations. Due

to the encoding schemes utilized in Manchester and

Biphase, these formats are exempt from translation. Data

translation examples are shown in Table 11.

INSTALLATION

Installation Considerations

This fiber-optic link is supplied in two forms, as a stand-

alone module and as a rack card. Units should be installed

in dry locations protected from extremes of temperature

and humidity.

Standalone Modules

1. Determine where the module is to be installed and

ensure that there is adequate space at both ends for

making the various cable connections and for reading

the diagnostic LEDs.

2. Standalone modules are provided with mounting holes

for four No. 6 screws (3-mm or 3.5-mm screws). The

type of screw chosen must be suitable for the surface

on which the module is to be mounted.

Rack Cards

Rack cards are designed to be installed in one of Vicon’s

19-inch (483-mm) EIA standard card-cage racks, either the

V515R-PS or the V517R-PS. Follow these steps after

selecting data format, contact closure and alarm output.

CAUTION: Although a rack card may be installed

without turning off power to the rack (hot-swappable),

Vicon recommends that the power switch on the rack power

supply is turned OFF and that the rack power supply is dis-

connected from any power source.

1. Make sure that the card is oriented right-side up and

slide it into the card guides in the rack until the edge

connector at the back of the card seats in the corre-

sponding slot in the rack’s connector panel. Seating

may require thumb pressure on the top and bottom of

the card’s front panel.

CAUTION: Take care not to press on any of the

LEDs.

2. Tighten the two thumb screws on the card until the front

panel of the card is seated against the front of the rack.

CONNECTIONS

Data Connections

Connect the data cable to the removable 8-pin screw ter-

minal on the V732 according to Tables 2 - 10 for the data

format selected above. When making data connections,

always wire the DATA OUT pins on the fiber links to the

DIGITAL VIDEO AND BIDIRECTIONAL DATA SYSTEM

Setting Mode

0 Disabled (factory preset)

1 RS-232

2 RS-232 + handshake

3 TTL

4 RS-422 2-wire

5 Manchester/Biphase

6 RS-485 2-wire standard

7 RS-485 2-wire 1V

Setting Mode

8 RS-485 2-wire 2V

9 RS-485 4-wire standard

A RS-485 4-wire 1V

B RS-485 4-wire 2V

C Reserved

D Audio/DTMF

E Test Mode Rx

F Test Mode Tx

TABLE 1: DATA SELECT SWITCH SETTINGS

4MODEL V732

Pin No. Function

8Ground

6RS-422 In +

5RS-422 In -

4nc

3RS-422 Out +

2RS-422 Out -

1Ground/Shield

Mode Switch SW1: Position 4

RS-422 Interface

TABLE 5:

100 ohm

Termination,

tie to pin 5 if required

Pin No. Function

8Ground

6Manchester/Biphase In +

3nc

5Manchester/Biphase In -

4nc

2Manchester/Biphase Out +

1Manchester/Biphase Out -

100 ohm

Termination,

tie to pin 5 if required

Mode Switch SW1: Position 5

Manchester/

Biphase Interface

TABLE 6:

Pin No. Function

8Ground

6RS-485+

5RS-485 -

4+5 VDC BIAS Out

3nc

2nc

1Ground/Shield

Position 8 = 2V offset

Mode Switch SW1:

RS-485 2-Wire Interface

Position 7 = 1V offset

Position 6 = standard offset

TABLE 7:

100 ohm

Termination,

tie to pin 5 if required

nc = no connection

Pin No. Function

8Ground

7nc

6In right/Diff In +

5In left/Diff In -

4nc

3Out right/Diff Out +

2Out left/Diff Out -

1Ground

Mode Switch SW1: Position D

DTMF/FSK Control Interface

TABLE 9:

Pin No. Function

8Ground

7nc

6tie to pin 3

5tie to pin 2

4nc

3tie to pin 6

2tie to pin 5

1nc

Mode Switch SW1: Position F

Test Mode Loopback Interface

TABLE 10:

Pin No. Function

8Ground

6RS-485 In +

5RS-485 In -

4+5 VDC BIAS Out

3RS-485 Out +

2RS-485 Out -

1Ground/Shield

Position B = 2V offset

Mode Switch SW1:

RS-485 4-Wire Interface

Position A = 1V offset

Position 9 = standard offset

TABLE 8:

100 ohm

Termination,

tie to pin 5 if required

Pin No. Function

8Ground

7nc

6nc

5RS-232 In

4nc

3nc

2RS-232 Out

1Ground/Shield

Mode Switch SW1: Position 1

RS-232 Interface

Pin No. Function

8Ground

7nc

6RTS/CTS In

5RS-232 In

4nc

3RTS/CTS Out

2RS-232 Out

1Ground/Shield

Mode Switch SW1: Position 2

RS-232 with Handshaking Interface

Pin No. Function

8Ground

7nc

6TTL In

5tie to pin 1

4nc

3TTL Out

2nc

1Ground/Shield

Mode Switch SW1: Position 3

TTL Interface

TABLE 2: TABLE 3: TABLE 4:

DATA CONNECTION TABLES

DIGITAL VIDEO AND BIDIRECTIONAL DATA SYSTEM

DATA IN pins on the data equipment, and the DATA OUT

pins on the data equipment to the DATA IN pins on the fiber

equipment.

Built-In Termination

The V732 features a built-in termination for RS-422,

RS-485, Manchester and Biphase installations. Connect a

jumper as described in Tables 5 through 8.

Video Cable Connection

Connect the video source cable to the input BNC jack on

the V732T transmitter. Connect monitor equipment to the

output BNC jack on the V732R receiver.

Vicon suggests that Belden number 9259 or equivalent

coaxial cable should be used.

Fiber Optic Cable Connection

Most cable manufacturers identify the individual fibers in

the cable. Select appropriately terminated fiber and mark

both ends with unique identification label (e.g., for cable no.

03, fiber no. 08) to ensure that the fiber connected to the

near end is the same one that is connected to the far end.

The proper optical connection links the transmitter's OUT

port to the receiver's IN port.

1. Wipe the inside of the port’s sleeve with a lint-free pipe

cleaner moistened with reagent-grade isopropyl alco-

hol. Blow dry with dry air.

2. Clean the connector using a lint-free cloth dampened

with alcohol to thoroughly wipe the side and end of the

ferrule. Blow the ferrule dry with dry air. Visually inspect

the ferrule for lint.

3. Fasten the fiber optic cable to the port.

Power Connections

Standalone modules may be powered either by 24 VAC or

by 12-16 VDC. Connect input power according to the label

on the module.

Rack modules’ power connections are made automatically

when the card is installed. To supply power to the rack,

connect the rack power supply to an AC outlet and set the

power switch to ON.

OPERATION

V732 links operate automatically once installed. To execute

the test mode, follow the instructions below. For an expla-

nation of LED color codes, see page 6 and Tables 13 and

14.

TEST MODE

The test mode allows the end user to verify the operation of

the copper receiver/driver circuit in a V732, as well as the

fiber connection from one V732 to another. Placing the

transmitter in test mode with test patterns enabled causes

a proprietary video ramp test signal to be transmitted over

the fiber to the receiver. This allows the fiber optic video

path to be tested without a video source.

Using the test mode is simple:

1. On the V732T to be tested, set the DATA SELECT

switch to position F (TX TEST MODE). At this end only,

wire the connector as shown in Table 10.

2. At the receiving (or opposite) end, set the V732R

DATA SELECT switch to position E (RX TEST MODE).

In the test mode, the transmitting unit (position F) should

behave as follows:

1. ENABLED LED is RED, indicating that a valid data for-

DATA TRANSLATION TABLE

TABLE 11: DATA TRANSLATIONS

Translation

Switch

Setting

Switch

Setting

Comment

TTL ÆRS-232, 3 wire

Signal level conversion.

RS-232, 3 wire ÆTTL

Signal level conversion.

TTL ÆRS-422

Single Ended to Differential Conversion.

RS-422 ÆTTL

Differential to Single Ended Conversion.

RS-232, 3 wire ÆRS-422

Single Ended to Differential Conversion.

RS-422 ÆRS-232, 3 wire

Differential to Single Ended Conversion.

RS-232, 5 wire ÆRS-485

7 - A

RS-232 Handshaking bit is used to indicate tri-state.

RS-485 ÆRS-232, 5 wire

7 – A

Tri-state detection circuitry activates handshaking bit.

6MODEL V732

mat has not been selected.

2. DATA OUT LED is slowly flashing between amber,

green, and off. This indicates that the test mode is gen-

erating an output pattern and sending it out on copper.

3. DATA IN LED should mimic the DATA OUT LED. This

indicates the data transmit/receive circuitry is working

properly.

4. LEVEL/LOSS indicates received fiber signal strength.

The receiving unit (position E) should behave as follows:

1. ENABLED LED is red, since a valid data format is not

selected.

2. DATA OUT LED should slowly flash amber, green, and

off. This indicates that the fiber path from the transmit-

ting unit set for TEST MODE is reliable.

3. DATA IN LED should be off, since there is no input cop-

per connection made.

4. LEVEL/LOSS should be green indicating that sufficient

optical power is being received.

When the test is completed, the test can be run again in the

opposite direction by changing the DATA SELECT switch

positions and moving the loopback cable to the opposite

end. Having done this, you have proven that the copper-in-

to-fiber-to-copper-out conversion is working in both direc-

tions.

VIDEO TEST PATTERNS

The V732 includes an internal video test pattern generator

that can ease installation and troubleshooting. The test pat-

terns generated can notify the user of a fiber or video

source failure by outputting specific test patterns on the

user’s monitor. Also, a special “ramp” test pattern can be

generated when the V732T is placed in test mode. The test

patterns verify proper functionality of the digital decoding

process as well as troubleshooting fiber optic interconnec-

tions.

Follow the procedures described in VIDEO FORMAT/TEST

PATTERN GENERATOR on page 1 to enable the test pat-

tern generator.

Table 12 provides a summary of the on-screen diagnostic

displays that are available

LED OPERATION

The V732 has 5 LED indicators that are very useful in

describing the current state of operation, as well as the cur-

rent status of data flow and fiber optic signal strength.

These indicators are LEVEL /LOSS, VIDEO IN

(Transmitter) or VIDEO OUT (Receiver), DATA IN, DATA

OUT, and ENABLED. Tables 13 and 14 provide a summa-

ry of LED operation. See Figure 4.

They function as follows:

LEVEL/LOSS Indicator

This LED is useful for indicating the relative optical signal

strength at the fiber optic receiver. When sufficient optical

power is being received, the LED shines green. As the opti-

cal power is decreased, as happens through long fiber

runs, splices, or connections, the intensity of the

LEVEL/LOSS LED will diminish until the limit of the V732's

sensitivity range has been reached. At this point the LED

will be OFF. If any additional optical attenuation is intro-

duced, the LEVEL/LOSS LED will turn bright RED, indicat-

ing an insufficient amount of optical power is being

received. All data will default to its failure state level to elim-

inate bus contention.

VIDEO IN (or OUT) Indicator

This LED indicates the strength of the video signal. VIDEO

IN on the transmitter remains green as long as adequate

video signal is being input to the transmitter. If the video

input becomes too weak, the LED turns red. The VIDEO

OUT LED on the receiver performs a similar function,

except that it refers to the video that is output from the

receiver.

NOTE: The V732 monitors the sync signals on the video to

determine the strength of the signal. It does not monitor the

brightness signal. Thus, if the scene in front of a camera is

totally dark, producing a blank monitor screen, the VIDEO

LEDs can still be green.

DIGITAL VIDEO AND BIDIRECTIONAL DATA SYSTEM

TABLE 12: ON SCREEN DIAGNOSTICS

Monitor Display

Meaning

Single white bar

No video input to transmitter

Double white bar

No optical input to receiver

Ramp test pattern

Test mode (Position E or F) selected at transmitter

TABLE 14: RECEIVER LED DIAGNOSTIC INDICATORS

LED

NAME COLOR INDICATES / CORRECTIVE ACTION

LEVEL/ Green Sufficient optical power received. No action required.

LOSS Red Insufficient optical power received. Verify fiber connected, within optical budget, transmitter power on.

VIDEO Green Valid video signal received from Tx unit. No action required.

OUT Red No video signal received from Tx unit. Verify fiber connected, transmitter power on.

DATA

Green Logic high into Rx unit. No action required.

IN Yellow Logic low into Rx unit. No action required.

Off Tri-state or disabled condition. Verify data connectivity, data source powered on.

DATA

Green Logic high received from Tx unit. No action required.

OUT Yellow Logic low received from Tx unit. No action required.

Off Tri-state received from Tx unit or disabled condition. No action required.

Green Mode switch set to valid data format. No action required.

ENABLED Red Disabled or in test mode. Check Data Select conforms to desired configuration - may be valid.

TABLE 13: TRANSMITTER LED DIAGNOSTIC INDICATORS

LED

NAME COLOR INDICATES / CORRECTIVE ACTION

LEVEL/ Green Sufficient optical power received. No action required.

LOSS Red Insufficient optical power received. Verify fiber connected, within optical budget, receiver power on.

VIDEO Green Valid video signal into Tx unit. No action required.

IN Red No video signal into Tx unit. Verify video connectivity, video source is powered on and is transmitting.

DATA

Green Logic high into Tx unit. No action required.

IN Yellow Logic low into Tx unit. No action required.

Off Tri-state or disabled condition. Verify data connectivity, data source powered on.

DATA

Green Logic high received from Rx unit. No action required.

OUT Yellow Logic low received from Rx unit. No action required.

Off Tri-state received from Rx or disabled condition. No action required.

Green Mode switch set to valid data format. No action required.

ENABLED Red Disabled or in test mode. Check Data Select conforms to desired configuration - may be valid.

MODEL V732

DATA IN Indicator

The DATA IN LED indicates the level of the data being input

to the V732 over copper. A green LED indicates a logic

HIGH is present on the copper inputs. A yellow indication

indicates a logic LOW is present on the copper. No color

(OFF) indicates a tri-state or high impedance input. This

can therefore be used to determine the resting state of your

equipment and, in the RS-485 state, verify that a tri-state is

being detected properly. The V732 has special circuitry to

capture data transitions and make them visible on the

LEDs. High-speed bursts of activity, previously unde-

tectable by standard LED circuits, can easily be seen by

this special circuitry.

DATA OUT Indicator

The DATA OUT LED functions identically to the DATA IN

LED except that the LED represents data that is being out-

put from the unit. This LED has the same high-speed cap-

ture circuitry described in the DATA IN section.

FIGURE 4: DIAGNOSTIC LEDS

V732R Surface Mount Receiver

732-R

LVL/LOSS

VIDEO OUT

DATA IN

ENABLED

DATA OUT

V732R-R

Rack Mount

Receiver

LVL / LOSS

VIDEO OUT

DATA IN

DATA OUT

ENABLED

LVL / LOSS

VIDEO IN

DATA IN

DATA OUT

ENABLED

V732T Surface Mount Transmitter

DIGITAL VIDEO AND BIDIRECTIONAL DATA SYSTEM

ENABLED Indicator

This LED has three states: green indicates a valid mode

has been selected, red indicates an invalid mode (spare or

test mode) has been selected, and flashing red/green indi-

cates that NO mode has been selected.

RS-485 APPLICATION NOTES

The V732 is configurable for both full-duplex (4-wire) and

half-duplex (2-wire) operation. It can be used for interfac-

ing to systems adhering strictly to the RS-485 specification

and for use with systems that use a modified, "fail-safe

biased" RS-485 bus.

Connection

Use high quality twisted-pair wiring and make sure all con-

nection points are clean and tight. A loose connection on

one of the wires can appear to function, yet cause intermit-

tent errors; data LEDs may be flashing as signals pass

through the system, but those signals will be corrupt.

Configuration

Vicon V732 units are designed to work with virtually any

RS-485 system. Unfortunately, some systems operate on

a "modified" version of RS-485; they use failsafe biasing to

pull up/down their bus during a tri-state condition. In a

standard RS-485 system, when a driver on a properly ter-

minated bus goes into tri-state (inactive), the voltage

between the differential outputs should be less than 200

millivolts. (This is what is considered "standard offset" in

the product instruction manuals.) A differential output tri-

state voltage this small can cause some nonstandard sys-

tems to latch up, since they are designed for much larger,

"fail-safe," offsets. To be able to interface to such equip-

ment, the Vicon V732 offers two more "offset" level modes.

That is, the maximum differential input voltage that can be

applied where it will be perceived to be in tri-state. Of

course, the equipment manufacturer does not disclose this

information. In most cases, the Vicon unit should be con-

figured for "standard offset" operation. When the system is

operating properly, the DATA IN and DATA OUT LEDs will

be off when there is no communication (tri-state) and they

will flash when data is being sent or received. In the case

where the link is not functioning properly (LEDs will most

likely not turn off), change the DATA SELECT switch on the

unit to a higher offset mode. First try 1 V, then 2 V. If sim-

ply switching the mode switch does not prove effective, the

offset level may have to be emulated at one end of the sys-

tem by using pull-up/down resistors on the data connector.

The V730 has a +5 V bias pin and ground pins on the con-

nector for this purpose. Contact equipment manufacturer's

technical support for recommended resistor values and

configuration.

Termination

RS-485 systems need to be properly terminated in order to

work reliably. Exactly two terminating resistors are used on

each RS-485 bus, at the furthest ends of the link. These

resistors should be attached right on the DATA IN/OUT

connector if the Vicon link is at one end of the bus. If the

terminating resistors are left out, the tri-state condition will

not be detected, and the bus may lock up. If there are too

many terminations on the bus, signal levels may drop too

low, or driver circuitry may fail. The standard value of ter-

minating resistors for RS-485 is 120 ohms.

MAINTENANCE

There is no operator maintenance other than keeping the

units clean.

TECHNICAL SUPPORT

For installation assistance, or in the event that a unit should

fail or if the cause of a problem cannot be determined, con-

tact Vicon’ technical support at:

TOLL FREE: 800-34-VICON (800-348-4266) or

PHONE: 631-952-CCTV (2288)

MODEL V732

ELECTRICAL

Power Requirements:

Surface Mount: 24 VAC 50/60 Hz,

12 - 16 VDC.

Rack Mount (all): 13.5 - 16 VDC.

Current Requirement: 450 mA.

Power Consumption: 6.0 W.

Heat Equivalent: 0.34 btu/min (0.09 kg-cal/min).

Note: These figures represent the conversion of 100% of the elec-

trical energy to heat. Actual percentage of heat generated will be

less and will vary from product to product. These figures are pro-

vided as an aid in determining the extent of cooling required for an

installation.

Safety Standard: UL 1950.

Radio Frequency

Emissions Rating: FCC Class A.

European Community

(CE) Standards: EN60950.

VIDEO

Number of Channels: 1.

Formats Supported: Monochrome: EIA and CCIR.

Color: NTSC, PAL and SECAM.

Full System Bandwidth: 6 MHz per channel.

Horizontal Video Resolution: 480 TV lines.

Input/Output Impedance: 75 ohms.

Optimum Input Signal: 1 V p-p nominal composite video.

Output Signal Level: 1 V p-p nominal, composite video,

unity gain, ±5%.

Differential Phase: 0.7º.

Differential Gain: 2%.

Signal-to-Noise Ratio: >55 dB (0 dB loss).

Interconnection Distance: Video devices to transmitter:

≤

100 ft (30 m).

Receiver to video devices:

≤

100 ft (30 m).

Note: RG59/U coaxial cable, Belden No. 9259 or equivalent, is

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