GE Interlogix S734DV User manual

Instruction Manual
S734DV & S7734DV
FIBER-OPTIC SYSTEM
FOUR-CHANNEL VIDEO AND
MULTI-PROTOCOL DATA
GE Interlogix
Fiber Options
g
x

This equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used properly in strict accordance
with the instructions contained herein, may cause interference to
radio communication. It has been tested and found to comply with
the limits for Class A computing devices in accordance with the spec-
ifications found in Subpart J of Part 15 of FCC rules, which are
designed to provide reasonable protection against such interference
when the equipment is operated in a commercial environment.
Operation of this equipment in a residential area is likely to cause
interference, in which case the user will be required to take whatev-
er means may be necessary to correct the interference at his own
expense.
Changes or modifications not expressly approved by the party
responsible for compliance could void the user’s authority to operate
the equipment.
This apparatus does not exceed the Class A limits for radio noise
emission set out in the Radio Interference Regulation of Industry of
Canada.
Cet appareil numerique de la classe A respecte toutes les exigences
du Reglement sur le materiel brouilleur du Canada.
Federal Communications Commission
and Industry Canada Radio Frequency
Interference Statements
FCC PART 15
COMPLIANT

GENERAL
This manual is a guide to the installation and operation of the
S734DV and S7734DV series fiber optic video and multi-
protocol data (MPD) transmission system. Please read the
entire manual before installing the equipment.
NOTE: The series numbers S734DV, S734DVT and
S734DVR are used to describe all models of transmitters and
receivers unless noted otherwise.
The Series S734DV and S7734DV video and MPD transmis-
sion system offers simultaneous transmission of four channels
of digital video and plus duplex digital control data. It also
offers four one-way channels of contact closure/relay trans-
mission.
The S734DV system operates over one multimode fiber while
the S7734DV uses one single-mode fiber.
A complete system consists of an S734DVT transmitter and an
S734DVR receiver. Units are designed for standalone opera-
tion or for installation in Fiber Options’ 515R1 or 517R1 Card
Cages or 502R standalone enclosures.
Unpacking the Unit
In the event that anything is missing from the following list,
contact your authorized Fiber Options dealer or representative.
S734DVT Transmitter or S734DVR Receiver
(S7734DVT Transmitter or S7734DVR Receiver)
Instruction manual
Save the original packing materials in case it becomes neces-
sary to return the unit.
INSTALLATION
Installation Considerations
This fiber-optic link is supplied as a standalone module or 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 will be installed, and ensure
that there is adequate space at both ends for making the various
cable connections.
2. Standalone modules feature a wall-mounting plate which is
attached to suitable flat surfaces with six No. 6 (3-mm or
3.5-mm) screws. Once the plate is securely attached to a flat
surface, the S734DV is mounted on the plate and can be easily
removed. Refer to Figure 1 for details.
3. An additional, optional bracket is also provided for more
secure mounting. The type of screws must be suitable for the
surface where a module will be mounted. Refer to Figure 2.
Fiber Options 80 Orville Drive, Bohemia NY 11716-2533 [email protected]
US Tel: [phone] or 800-342-3748 Fax: 877-FiberFax (877-342-3732 toll free) or 631-567-8322
For international offices, see the back cover.
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GE Interlogix
Fiber Options
MODELS SS734DV &&SS7734DV
FOUR-CCHANNEL VVIDEO WWITH MMULTI-PPROTOCOL DDATA
g
SYSTEM DIAGRAM
one
optical fiber
S734DVT S734DVR
Video In 1-4
4 Contact Closure
Multi-protocol Data
Video Out 1-4
4 Contact Closure
Multi-protocol Data
INSTRUCTION
MANUAL

Rack Cards
Rack cards are designed to be installed in one of Fiber Options’
19-inch (483-mm) EIA standard card-cage racks, either the
515R1 or the 517R1. They may also be supplied in the 502R
standalone rack card enclosures. Follow these steps after per-
forming MODULE SETUP procedures.
515R1 and 517R1 Card Cage Racks
CAUTION: Although rack cards are hot-swappable and may be
installed without turning off power to the rack, Fiber Options rec-
ommends that the power switch on the rack power supply be
turned OFF and that the rack power supply is disconnected 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 corresponding slot in the rack’s con-
nector 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.
502R Standalone Enclosures
CAUTION: Although rack cards are hot-swappable and may be
installed without turning off power to the rack, Fiber Options rec-
ommends that the power switch on the rack power supply be
turned OFF and that the rack power supply is disconnected from
any power source.
1. Look inside the enclosure to determine the location of the
socket for the edge connector. Orient the card so that it will seat
in the socket, and slide it into the enclosure until the edge con-
nector at the back of the card seats in the socket 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.
MODULE SETUP
General
Determine the data formats required for input and output. The
input and output formats may be the same or different, as
described in the next section.
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 for-
mat according to the DATA SELECT settings shown in Figure 3.
See Figures 4 through 6 for the location of the DATA SELECT
switch.
NOTE: If the link is going to support RS-485, refer to RS-485
APPLICATION NOTES on page 10.
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FIGURE 2: OPTIONAL SECURITY CLIP PLACEMENTFIGURE 1: MOUNTING PLATE
Security clip
attaches to the
rear of the
module via
any of these
four screws.
DO NOT
mount the clip
to any other
screws on the
module.
Secure the
module in
place by then
screwing the security clip to the mounting surface, using a
screw suitable for the selected surface.
Mounting plate
attaches to selected
surface with six
suitable screws.
Standalone mod-
ules are mounted
by sliding it onto the
plate’s hooks until
firmly seated.
The module can be
easily removed and
remounted.

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Setting Mode
0 Disable (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 Reserved
E Reserved
F Test Mode Tx
F1
0
E
D
2
3
5
6
7
8
C
B
A9
4
FIGURE 3: DATA SELECT SWITCH SETTINGS
FIGURE 4: RACK-MOUNT RECEIVER - SWITCH AND JUMPER LOCATION
VIDEO CARD
ALARM
1 - ON
2 - OFF
TEST
1 - NTSC
2 - PAL
3 - OFF
12123
JP1
DATA CARD
DATA SELECT
SWITCH SW1
8
1
DATA CONNECTOR
RELAY/CONTACT 1/2 CONNECTOR
RELAY/CONTACT 3/4 CONNECTOR
VIDEO OUT 1
VIDEO OUT 2
VIDEO OUT 3
VIDEO OUT 4
OPTICAL
CONNECTOR

Alarm Jumper
Rack cards are supplied with an alarm function that activates if
the optical signal input to the receiver fails. The alarm is
always indicated on the front panel of the card by a red
LEVEL/LOSSTM LED. The alarm may also be output to the
rack power supply, where a sonalert (audible alarm) and alarm
output contact closure may be activated.
The alarm is set to ON (ACTIVE) at the factory. If the alarm
output is not desired, move jumper JP1 on the receiver or JP4
on the transmitter to the OFF position. Refer to Figures 4 and
5.
NOTE: Setting alarm to OFF (inactive) does not affect the
operation of the LEVEL/LOSSTM LED. Loss of optical signal
will always be indicated by a red LEVEL/LOSSTM LED.
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FIGURE 5: RACK-MOUNT TRANSMITTER - SWITCH AND JUMPER LOCATIONS
VIDEO CARD
DATA CARD
DATA SELECT
SWITCH SW1
8
1
DATA CONNECTOR
RELAY/CONTACT 1/2 CONNECTOR
RELAY/CONTACT 3/4 CONNECTOR
VIDEO IN 1
VIDEO IN 2
VIDEO IN 3
VIDEO IN 4
OPTICAL
CONNECTOR
JP1
NTSC
PAL
DISABLE
JP4
OFF
2
ON ALARM

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Video Format/Test Pattern Generator
The S734DV links support both NTSC and PAL video stan-
dards without adjustment. The S734DVT transmitter and
S734DVR receiver have jumpers or a switch to select the video
format for the test pattern generator. To set the video format for
the test pattern generator:
NOTE: In order for the test pattern generator to operate prop-
erly, both the transmitter and receiver must be set to the same
format.
1. Set jumper JP1 on the receiver board to position 1 for
NTSC, position 2 for PAL, or position 3 to disable the test pat-
tern generator. See Figure 4.
2. (Rack-mount transmitter only) Set jumper JP1 on the trans-
mitter to the NTSC, PAL, or disabled position as required. See
Figure 5.
3. (Standalone transmitter only) Switch S1, located through
mounting hole on back of unit, configures the test pattern gen-
erator. Position 1 enables test patterns when in the ON posi-
tion. S1 position 2 selects video standard; ON selects NTSC,
while OFF selects PAL. See Figure 6.
Disabling the test pattern generator causes no signal output
during the failure conditions or when using the Test Mode
described on page 9.
Data Translation
The data translation capability of the S734DV series is unique
in the industry. It allows translation from one format to anoth-
er, thus eliminating the need for external translation devices.
Data translation examples are shown in Table 1.
The translation is in the physical layer only; it cannot interpret
specific protocols, nor translate commands. Due to the encod-
ing schemes utilized in Manchester and Biphase, these formats
are exempt from translation.
CONNECTIONS
Data Connections
Data connections are made to the removable screw terminal on
the S734DV according to the selected format. Refer to Tables
2 through 10 for transmitters and receivers. When connecting
data cables, always wire the DATA OUT pins on the data
equipment to the DATA IN pins on the fiber links, and the
DATA IN pins on the data equipment to the DATA OUT pins
on the fiber links. See Figure 7. See Figure 6 for the standalone
transmitter and Figure 8 for rack cards.
FIGURE 6: STANDALONE TRANSMITTER
DATA SELECT SWITCH
VIDEO IN 1
DATA
CONNECTOR
PIN 1
CONTACT
CLOSURE
CONNECTOR
VIDEO IN 2
VIDEO IN 3
VIDEO IN 4
POWER
CONNECTOR
PIN 1 12 - 16 VDC
PIN 2 24 VAC
PIN 3 24 VAC
PIN 4 DC GROUND
OPTICAL
(FIBER)
CONNECTOR
VIDEO TEST PATTERN SELECT
(LOCATED ON REAR OF MODULE)
ENABLE
DISABLE 12
ON NTSC
PAL

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TABLE 1: DATA TRANSLATIONS
Translation
TX
Switch
Setting
RX
Switch
Setting
Comment
TTL ÆRS-232, 3 wire
3
1
Signal level conversion.
RS-232, 3 wire ÆTTL
1
3
Signal level conversion.
TTL ÆRS-422
3
4
Single Ended to Differential Conversion.
RS-422 ÆTTL
4
3
Differential to Single Ended Conversion.
RS-232, 3 wire ÆRS-422
1
4
Single Ended to Differential Conversion.
RS-422 ÆRS-232, 3 wire
4
1
Differential to Single Ended Conversion.
RS-232, 5 wire ÆRS-485
2
7 - A
RS-232 Handshaking bit is used to indicate tri-state.
RS-485 ÆRS-232, 5 wire
7 – A
2
Tri-State detection circuitry activates handshaking bit
DATA EQUIPMENT
DATA OUT
DATA IN
FIBER LINK
DATA OUT
DATA IN
CONTACT OUT
CONTACT IN CONTACT OUT
CONTACT IN
C2
C1
C1
C2
C3
C4
C4
C3
5
4
7
8
6
2
1
3
1
2
3
4
OPTICAL
(FIBER)
CONNECTOR
DATA
CONNECTOR
CONTACT
CLOSURE/RELAY
CONNECTORS
VIDEO
CONNECTORS
FIGURE 7: FIBER LINK DATA CONNECTIONS
FIGURE 8: REAR CONNECTOR PANEL - RACK-MOUNT CARDS

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nc = no connection
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
Pin No. Function
8Ground
7nc
6RS-422 IN +
5RS-422 IN -
4nc
3RS-422 OUT +
2RS-422 OUT -
1Ground/Shield
Mode Switch SW1: Position 4
RS-422 Interface
Pin No. Function
8Ground
7RS-485 termination - tie to pin 5
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
Pin No. Function
8Ground
7RS-485 termination - tie to pin 5
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
Pin No. Function
8Ground
7nc
6Manchester/Biphase in +
3nc
5Manchester/Biphase in -
4nc
2Manchester/Biphase out +
1Manchester/Biphase out -
Mode Switch SW1: Position 5
Manchester/Biphase Interface
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 2: TABLE3: TABLE 4:
TABLE 5:
TABLE 10:
TABLE 9:
TABLE 8:
TABLE 6:
Pin No. Function
8Ground
6Manchester/Biphase in +
3nc
5Manchester/Biphase in -
4nc
2Manchester/Biphase out +
1Manchester/Biphase out -
7Manchester/Biphase
termination; tie to pin 5
Mode Switch SW1: Position 5
Manchester/Biphase Interface
Termination Unit
TABLE 7:

Built-In Termination
The S734DV features a built-in termination for RS-485,
Manchester and Biphase installations. Simply connect a
jumper as described in Tables 7 through 9.
Contact Closure Connections
There are four contact closure channels on this unit.
Connecting external equipment to these channels is done using
the removable screw terminal connectors on the module. Refer
to Figure 6 and 8.
Each channel is indicated by a pair of terminal positions, for
example, the two terminals labeled C1. Connect the two wires
for the channel 1 relay/contact closure to these two pins.
Repeat for channels 2, 3, and 4, using terminal pairs C2, C3,
and C4, respectively.
Video Cable Connection
CAUTION: Make sure all peripheral equipment to be con-
nected to the fiber units is turned OFF during installation.
NOTE: Fiber Options suggests that Belden number 9259 or
equivalent coaxial cable should be used. Consult the cable
manufacturer’s specifications for the maximum distance
between the video equipment and the fiber equipment.
NOTE: Coaxial cable must be terminated with female BNC
connectors to properly couple with the Fiber Options equip-
ment.
1. Connect the four video sources, such as cameras, to the
input BNC connectors on the S734DVT transmitter using ter-
minated coaxial cable. See Figures 6 and 8.
2. Connect the monitoring equipment to the output BNC con-
nectors on the S734DVR receiver using terminated coaxial
cable. See Figures 6 and 8.
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 will link the transmitter's
TRANSMIT (OUT) port to the receiver's RECEIVE (IN) port.
See Figures 6 and 8.
1. Wipe the inside of the port’s sleeve with a lint-free pipe
cleaner moistened with reagent-grade isopropyl alcohol. 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. As a convenience to
the installer, one-fiber units have been fitted with an angled
optical connector to permit easy access.
Power Connections
Standalone Modules
Standalone transmitters may be powered either by 24 VAC or
by 12 - 16 VDC. Connect input power according to the label
on the module. See Figure 6.
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.
502R Enclosures
Rack cards installed in the 502R enclosure can only be pow-
ered by 12 - 16 VDC. Connect input power according to the
label on the enclosure.
SMARTSTM DIAGNOSTICS
The S734DV has built in Status Monitoring And Reliability
Test System (SMARTSTM) diagnostic capabilities. This
includes LED indicators for monitoring data and optical status
as well as video and data generators for verifying unit func-
tionality. They are described in the following sections.
Video Test Patterns
The S734DV includes an internal video test pattern generator
that can ease installation and troubleshooting. Refer to Table
11. The test patterns generated can notify the user of a fiber
failure or a video source failure by outputting specific test pat-
terns on the user’s monitor.
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Also, a special “ramp” test pattern can be generated when the
S734DVT is placed in test mode.
This will verify proper functionality of the digital decoding
process as well as troubleshooting fiber optic interconnections.
To enable the test pattern generator, refer to Video Format/Test
Pattern Generator on page 5:
Test Mode
Test mode allows the user to verify the operation of the copper
receiver/driver circuit in an S734DV, as well as the fiber con-
nection from one S734DV to another. This allows the fiber
optic video path to be tested without a video source. Using the
test mode is simple:
1. On one of the S734DV units, set the rotary DATA SELECT
switch to position F (TEST MODE). At this end only, wire the
data connector as shown in Table 10.
NOTE: The unit set to position F (TEST MODE) is the trans-
mitter during testing.
2. At the opposite end, set the S734DV rotary DATA SELECT
switch to position 9.
3. In the test mode, the test transmitter unit should behave as
follows:
a. The ENABLED LED is red, indicating that a valid data for-
mat has not been selected.
b. The DATA OUT LED is slowly flashing between amber,
green, and off. This indicates that the test mode is generating
an output pattern and sending it out on copper.
c. The DATA IN LED should mimic the DATA OUT LED.
This indicates that the data transmit/receive circuitry is work-
ing properly.
d. The LEVEL/LOSSTM LED indicates received fiber signal
strength.
4. The test receiver (position 9) should behave as follows:
a. The ENABLED LED is red, indicating that a valid data for-
mat has not been selected.
b. The DATA OUT LED is slowly flashing between amber,
green, and off. This indicates that the fiber path from the trans-
mitting unit is set for TEST MODE is reliable.
c. The DATA IN LED should be off since there is no input
copper connection made.
d. The LEVEL/LOSSTM LED is green indicating that suffi-
cient optical power is being received.
When the test is completed, run the test again in the opposite
direction by changing DATA SELECT switch positions and
connectors. Successful completion of the test indicates both
units are operating correctly.
LED Operation
Refer to the Table 12 for an explanation of how to diagnose
system faults using the LEDs built into the Fiber Options units.
The S734DV has 7 LED indicators that are very useful in
describing the current state of operation, as well as the current
status of data flow and fiber optic signal strength. These indi-
cators are LASER, LEVEL /LOSSTM, VIDEO IN (or OUT),
DATA IN (or OUT), CONTACT, and ENABLED. See Figure
9. They function as follows:
LASER Indicator
The LASER LED indicates the status of the laser. A green
LASER LED indicates the laser is operating normally. A red
LASER LED indicates the laser is malfunctioning.
LEVEL/LOSSTM 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 is green. If no or insufficient
optical power is received, the LED will be red. All data will
default to it's failure state level to eliminate bus contention.
TABLE 11: 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
Testmode (Position E or F) selected at transmitter

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If test patterns are enabled a grey screen with two white verti-
cal bars will be output. If test patterns are disabled the screen
will be black.
VIDEO IN (or OUT) Indicator
This LED indicates the presence of a video signal. VIDEO IN
on the transmitter remains green as long as an adequate video
signal is being input to the transmitter.
The LED will be red when no video signal is present. The
VIDEO OUT LED on the receiver performs a similar function,
except that it refers to the video that is output from the receiv-
er. If test patterns are enabled a grey screen with a single white
vertical bar pattern will be output when no video is present. If
disabled, the screen will be black.
NOTE: The S734DV monitors the video sync signals to deter-
mine the presence of the signal. It does not monitor the picture
brightness signal. Thus, if the scene in front of a camera is
totally dark, producing a blank monitor screen, the VIDEO
LEDs will still be green.
DATA IN Indicator
The DATA IN LED indicates the state of the data being input
to the S734DV over copper. A green DATA IN LED indicates
a logic HIGH is present on the copper inputs. A yellow DATA
IN LED indicates a logic LOW is present on the copper. No
color (OFF) indicates a tri-state or high impedance input.
Therefore, this can be used to determine the resting state of
your equipment. Unique to the industry, the S734DV has spe-
cial 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 output
from the unit. This LED has the same high-speed capture cir-
cuitry described in the DATA IN section.
CONTACT Indicator
The CONTACT LED indicates the presence of relay/contact
closure signals. A green CONTACT LED indicates a closed
relay contact, while a red LED indicates an open relay/contact.
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, or flashing red/green indicates that
NO mode has been selected.
RS-485 APPLICATION NOTES
The S734DV is configurable for both full-duplex (4-wire) and
half-duplex (2-wire) operation. It can be used for interfacing
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 intermittent
errors: data LEDs may be flashing as signals pass through the
system, but those signals will be corrupt.
Configuration
Fiber Options Universal Data 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 considered "standard offset" in the product instruction
manuals). A differential output tri-state voltage this small can
cause some nonstandard systems to latch up, since they are
designed for much larger, "fail-safe," offsets.
To be able to interface to such equipment, Fiber Options
Universal Data products offer 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 Fiber Options unit should be
configured 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 simply switching
the mode switch does not prove effective, the offset level may
have to be emulated at one end of the system by using pull-
up/down resistors on the data connector. The S734DV has a
+5 V bias pin and ground pins on the connector for this pur-
pose. Contact equipment manufacturer's technical support for
recommended resistor values and configuration.

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734-R
LEVEL/LOSS
VIDEO OUT
VIDEO OUT
VIDEO OUT
VIDEO OUT
LASER
ENABLED
CONTACT
DATA OUT
DATA IN
LASER
VIDEO IN
VIDEO IN
VIDEO IN
VIDEO IN
LEVEL/LOSS
ENABLED
CONTACT
DATA OUT
DATA IN
734-T 7734-R
LEVEL/LOSS
VIDEO OUT
VIDEO OUT
VIDEO OUT
VIDEO OUT
LASER
ENABLED
CONTACT
DATA OUT
DATA IN
LASER
VIDEO IN
VIDEO IN
VIDEO IN
VIDEO IN
LEVEL/LOSS
ENABLED
CONTACT
DATA OUT
DATA IN
7734-T
FIGURE 10: FRONT PANELS
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 resis-
tors should be attached on the DATA IN/OUT connector if the
Fiber Options 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 terminating
resistors for RS-485 is 120 ohms.
OPERATION
S734DV links operate automatically once installed. Refer to
TEST MODE on page 9 for information on how to execute the
test mode. Refer to Table 11 for a description of on-screen
diagnostic indications. For an explanation of LED color codes,
refer to LED OPERATION on page 9 and Table 12.
MAINTENANCE
There is no operator maintenance other than keeping the units
clean.
CONTACTING FIBER OPTIONS
If you cannot determine the cause of your problem and are in
the U.S. or Canada, call the Fiber Options Headquarters in
Bohemia, NY.
If you are outside the U.S. or Canada, call the closest interna-
tional office listed on the back page of this manual.Have the
following information available: exact model number and
product code of your fiber-optic links, and a listing of the diag-
nostic indicators and their respective color/condition.
SHIPPING AND PACKAGING
Before shipping or transporting your Fiber Options unit, pack
it securely to prevent damage that could occur in transit. Use
care to protect all connectors, LEDs, and corners from possible
damage.
RETURNS TO FIBER OPTIONS
If any equipment must be returned to Fiber Options for repair
or replacement, you must obtain authorization from our Return
Authorization department before shipping.
If you are in the U.S. or Canada, call our NY headquarters at
631-567-8320 or 800-342-3748.
Customers in other countries should contact their regional rep-
resentative listed on the back cover of this manual. A Return
Authorizations representative will provide full instructions for
returning your product at that time.
NOTE: All authorized returns must be clearly marked with the
Return Authorization information. Please follow the instruc-
tions completely.
NOTE: Fiber Options will not accept return delivery of any
product without prior authorization.

All specifications are subject to change without notice. Information furnished by FIBER OPTIONS is
believed to be accurate and reliable. However, no responsibility or liability is assumed by FIBER
OPTIONS for its use, nor for any infringement of patents or other rights of third parties which may
result from its use. No license is granted by implication or otherwise under any patent or other rights
of FIBER OPTIONS.
11-0734DV-B
Copyright 2001 by FIBER OPTIONS.
All rights reserved.
021211
www.fiberoptions.com
80 Orville Drive, Bohemia NY 11716-2533
[email protected]
US Tel: [phone] Fax: [phone]
800-342-3748 877-FiberFax (877-342-3732)
UK Tel: [phone] Fax: [phone]
Australia Tel: [phone] Fax: [phone]
France Tel: [phone] Fax: [phone]
Germany Tel: [phone] Fax: [phone]
Hong Kong Tel: [phone] Fax: [phone]
Latin America Tel: [phone] Fax: [phone]
. . . light years ahead™
INSTRUCTION
MANUAL
TABLE 12: LED DIAGNOSTIC INDICATORS
LED Name
Color
Indicates/Corrective Action
Green
Sufficient optical power received. No action required.
LEVEL/
LOSS
Red
Insufficient optical power received. Verify fiber connected & within optical budget,
receiver power on.
Green
Laser is operating normally. No action required.
LASER
Red
Laser is malfunctioning. Contact Fiber Options.
Green
Valid video signal at unit. No action required.
VIDEO
IN/OUT
Red
No video signal at unit. Verify video connected, video source has power and is
transmitting.
Green
Logic high into unit. No action required.
Yellow
Logic low into unit. No action required.
DATA IN
off
Tri-state or disabled condition. Verify data connected, data source has power.
Green
Logic high received over fiber. No action required.
Yellow
Logic low received over the fiber. No action required.
DATA OUT
Off
Tri-state received over fiber or disabled condition. No action required.
Green
Closed contact sensed on transmitter, or output from receiver.
CONTACT
Red
Open contact sensed on transmitter, or output from receiver.
Green
DATA SELECT switch set to valid mode. No action required.
Red
DATA SELECT switch set to Test mode or invalid data format. Check Data Select
switch conforms to desired configuration – may be valid.
ENABLED
Flashing
Red/Green
DATA SELECT switch in disabled position (position 0). Select a valid data format.