East Coast Datacom DBU-V11 User manual

3FORCED INDICATE TO INPUT PORT ..............................................
3EQUIPMENT GROUNDING .........................................................
3CASCADING AND TERMINATION RESISTORS ....................................
3INSTALLATION ....................................................................
3POWER CONNECTION .............................................................
3
CHAPTER 3 - SETUP AND
INSTALLATION ........................
2FRONT PANEL LED INDICATORS .................................................
2DB-15, X.21 PORT PIN OUTS ........................................................
2
CHAPTER 2 - BASIC OPERATION ........................
1
TABLE OF CONTENTS
CHAPTER 1 - DESCRIPTION ........................
EAST COAST DATACOM, INC., DBU-V11 INSTALLATION AND OPERATIONS MANUAL

OPERATIONS MANUAL
DATA BROADCAST UNIT
DBU-V.11
June 05, 2000
Manufactured By:
East Coast Datacom, Inc.
FOR TECHNICAL SUPPORT CALL:
East Coast Datacom, Inc.
245 Gus HippBlvd,STE 3
Rockledge, FL 32955
TEL: [phone] or [phone]
FAX: [phone]
Web Site: www.ecdata.com
PT # 719014-B

SAFETY WARNING
Always observe standard safety precautions during installation, operation and
maintenance of this product. To avoid the possibility of electrical shock, be sure to
disconnect the power cord from the power source before you remove theIEC power fuses
or perform any repairs.
PROPRIETARY NOTICE
The information contained hereinis proprietary to East Coast Datacom, Inc. Any
reproduction or redistribution of this publication, in whole or in part, is expressly prohibited
unless written authorization is provided by East Coast Datacom, Inc.
WARRANTY NOTICE
WARRANTIES: East Coast Datacom, Inc. (hereafter referred to as E.C.D.) warrants that
its equipment is free from any defects in materials and workmanship. The warranty period
shall be three (3) years from the date of shipment. E.C.D.'s sole obligation under its
warranty is limited to the repair or replacement of defective equipment, provided it is
returned to E.C.D., transportation prepaid, within a reasonable period. This warranty will
not extend to equipment subjected to accident, misuse, alterations or repair not made by
E.C.D. or authorized by E.C.D. in writing.
PUBLICATION NOTICE
This manual has been compiled and checked for accuracy. The information in this manual
does not constitute a warranty of performance. E.C.D. reserves the right to revise this
publication and make changes from time to time in the content thereof. E.C.D. assumes
no liability for losses incurred as a result of out-of-date or incorrect information contained in
this manual.
i
EAST COAST DATACOM, INC.,
DBU-V11
INSTALLATION AND OPERATIONS MANUAL

EMISSIONS REQUIREMENTS
FCC CLASS A
NOTE: This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to Part 15 of FCC rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the instruction manual,
may cause harmful interference to radio communications. Operation of this equipment in a
residential area is likely to cause harmful interference in which case the user will be
required to correct the interference at his own expense.
WARNING: Charges of modifications to this unit not expressly approved by the party
responsible for compliance could void the user's authority to operate the equipment.
CANADIAN EMISSIONS
This digital apparatus does not exceed the Class A limits for noise emissions from a
digital apparatus set out in the Radio Interference Regulations of the Canadian Department
of Communications.
Le present appareil numerique n'emet pas de bruits redioelectriqes depassant les limites
applicables aux appareils numeriques de la Class A prescites dans le Reglement sur le
brouillage redioelectrique edicte par leministere des Communications du Canada.
EAST COAST DATACOM, INC.,
DBU-V11
INSTALLATION AND OPERATIONS MANUAL

CHAPTER 1 - DESCRIPTION
The DBU-V11 is designed for use in receive only data broadcast applications. Examples
of typical data broadcast applications are; continuously updated private or public data
displays and distribution of continuous data to PC's or receive only printers. The
expanding role of VSATsystems in receive only applications for real time data distribution
is expected to increase dramatically over the next few years. TheDBU-V11 is an excellent
choice for applications of this type.
The DBU-V11 utilizes an ITU V.11 (X.21) balanced interface with a maximum data rate of
up to 20Mbps.Additionally, V.11 can support data transmissions at far greater cable
distances than does RS-232. TheDBU-V11 can support an unlimited amount of receive
only terminals simultaneously.
The DBU-V11's master port has tandem DB-15 connectors. This allows a dedicated input
port and an additional port for cascading without loosing a sub channel port. The
DBU-V11 continuously broadcasts receive data, receive timing and Indicate (any user
defined control signal from the main input data source may be used). The input signals are
split with the internal circuitry and rebroadcast out on the eight output ports.
The DBU-V11 is housed in a sturdy aluminum enclosure and is supplied with an internal
linear power supply. The unit has a 110/220 VAC rotary select switch located on the rear
of the housing. The unit can operate on standard AC power found in all countries.
LEASED LINE
MODEM MODEM
DBU-V11
TERMINAL
DBU-V11
EAST COAST
D A T A C O M, I N C.
HOST
V.11 BALANCED
INTERFACE
ONE WAY DATA PATH TO TERMINALS
TYPICAL APPLICATION
EAST COAST DATACOM, INC.,
DBU-V11
INSTALLATION AND OPERATIONS MANUAL
Page 1

1-1
CHAPTER 2 - BASIC OPERATION
Operationof the DBU-V11 is as simple as plugging a male DB-15 cable into the female
DB-15 INPUT PORT on the back panel and plugging up to eight male DB-15 connectors
into Ports 1 - 8. Data, Clock and Indicate are received on the Master Port and are
broadcast out simultaneously on ports 1 -8. The following table shows the pin-out for the
Master and sub-channel ports.
DB-15, X.21 PORT PIN OUTS
SIGNAL TIMING (B-)
13
INDICATE (B-)12
RECEIVE DATA (B-)11
GROUND
8
SIGNAL TIMING (A+)
6
INDICATE (A+)5
RECEIVE DATA (A+)4
SHIELD
1
PIN NAMEPIN NUMBER
DB-15 FEMALE OR MALE CONNECTORS
FRONT PANEL LED INDICATORS
Located on the front of theDBU-V11 are four green LED’s. The Power indicator, marked
POWER illuminates when AC voltage is applied to the box. Three adjacent LED
indicators illuminate in conjunction with Receive Data (DATA), Receive Clock (CLOCK)
and the user defined controlsignal which is markedINDICATE. The DATA and CLOCK
LED's will flash on and off at a constant rate regardless of the user’s clock and data rate.
The INDICATE LED will be illuminated when and if the user defined control signal is
present.
EAST COAST DATACOM, INC.,
DBU-V11
INSTALLATION AND OPERATIONS MANUAL
Page 2

CHAPTER 3 - SETUP AND INSTALLATION
POWER CONNECTION
It is very important to check that the unit is set to the correct voltage setting for your
application before applying AC power. Located on the rear of the unit you will find a rotary
110/220 VAC switch. Using a coin or small screwdriver, gently turn the switch to the
appropriate power position as required for your installation (110 or 220VAC).
INSTALLATION
Connect the main input data feed source into theINPUT port DB-15 female connector.
The output ports are markedPORT 1 through PORT 8. Connect from one to eight DTE
V.11 (X.21) compliant devices into the sub-channels ports on the back of theDBU-V11.
CASCADING AND TERMINATION RESISTORS
If more than oneDBU-V11’s are to receive Data, Clock and Indicate from the same
source, a shielded DB-15 one-to-one extension cable with a male DB-15 on one end and a
female DB-15 on the other end can be used to link theDBU-V11's together. The box
furthest from the source of the data and clock should have jumpers JMP2,JMP3 and
JMP4 moved to theopposite position of the factory default setting for proper termination.
High quality shielded cables are recommended for box to box cascading. The cabling should be twisted pair
with a wire mesh shield. All signal pairs should be kept together for clean quality signals. We recommend
Beldon 9833 or equivalent cable with metal hoods.
EQUIPMENT GROUNDING
Jumper JMP1 provides for grounding interconnection in those systems requiring a
connection between Pin #1 (frame ground) and Pin # 8 (signal ground). Please reference
the PCB chart at the end of this document for further strapping details.
FORCED INDICATE TO INPUT PORT
EAST COAST DATACOM, INC.,
DBU-V11
INSTALLATION AND OPERATIONS MANUAL
Page 3

Jumper JMP5provides for forcing Indicate high to the INPUT port.
STRAP CHART
EAST COAST DATACOM, INC.,
DBU-V11
INSTALLATION AND OPERATIONS MANUAL
Page 4

TECHNICAL SPECIFICATIONS
Applications Front Panel
Multiple synchronous broadcasting of Indicator: Power, Data, Clock and
Data, Clock and Indicate Indicate
Capacity Power Requirement
One to eight sub-channels; standard 100-120/200-220 VAC @+10%, 47
DB-15 pin (female) interface connector to 63 Hz, 7 Watts
for each sub-channel Switch selectable
Data Format ENVIRONMENTAL
Data transparent at all data rates Operating Temperature: 320to
122 F (00to 500C)
Data Rates Relative Humidity: 5 to 90% non-
Up to 20Mbps condensing
Altitude: 0 to 10,000 feet
Electrical Interface
ITU V.11 (pinned to X.21) Dimensions
Height: 1.75 inches (4.44 cm)
Sub-Channel Interface Width: 17.00 inches (43.18 cm)
V.11, DB-15 female connectors Length: 9.00 inches (22.86 cm)
Master Port Weight
V.11, Female\Male DB-15 connectors 4.5 lbs (2.1 Kg)
Enclosure Shock and Vibration
Metal: Aluminum Withstands normal shipping
Approvals Altitude
UL1950,FCC Class A 9842 feet (3000 meters)
CE - EN60950,EN55022,EN50082-1
EAST COAST DATACOM, INC.,
DBU-V11
INSTALLATION AND OPERATIONS MANUAL
Page 5

NOTES:
EAST COAST DATACOM, INC.,
DBU-V11
INSTALLATION AND OPERATIONS MANUAL
Page 6