English French German Italian Japanese Korean Spanish

Data Broadcast Unit Supports 50 Ohm or 75 Ohm BNC


Features / Benefits

  • Interface - ITU V.11 electrical, DB-15 connectors pinned to ITU-X.21
  • Compatable with V.35, V.36, RS-422, RS-530 and RS-485
  • Data Rates - Synchronous to 20Mbps
  • Visual Indication of Data, Clock and Indicate
  • Receive Data, Clock and Indicate Broadcast to all Subchannels
  • ully Cascadable
  • Ideal for V-SAT Data/Clock Broadcasting
  • Sturdy Metal Enclosure Rackmount or Standalone
  • 110/220VAC Switch Selectable


The DBU-TTL Data Broadcast Unit is designed for use in receive only data broadcast applications. Examples of typical data broadcast applications are; Continuously updated public data displays and distribution of continuous data and clock signals to Terminals or receive only communication equipment. The DBU-TTL is especially suited for weather data distribution systems and radar data distribution.

The expanding role of V-SAT systems in receive only applications for real time data distribution is expected to increase dramatically over the next several years. The DBU-TTL is an excellent choice for applications of this type.

The DBU-TTL input port accepts standard TTL signals on a 50 Ohm or 75 Ohm connector, typically data and clock. The units output ports can support up to eight receive only terminals simultaneously on 50 Ohm or 75 Ohm connectors for data and clock distribution.

The DBU-TTL continuously broadcasts receive data and receive timing signals from the data source to the eight output terminal ports.

The DBU-TTL is housed in a sturdy aluminum enclosure and is supplied with an internal linear power supply. The unit has a 110/120 VAC rotary select switch located on the rear of the housing. The unit can operate on standard power found in all countries.

The DBU-TTL has a three year warranty and a 24 hour turnaround on warranty repairs.



Application Allows TTL input of Data and Clock on 50 Ohm or 75 Ohm BNC Connectors to be broadcast simultaneously to eight output TTL signals of Data and Clock on BNC connectors
Capacity Data & Clock Input Ports and eight output ports each for Data & Clock
Interface 50 Ohm or 75 Ohm BNC Connectors
Data Format Synchronous or Asynchronous Data
Data Transparent at all Data Rates
Data Rates Up to 20Mbps
Indicators POWER, DATA and CLOCK
Surge Protection Main power supply
 Front Panel Indicators....Power, Receive Data and Receive Timing
Power Source AC Mains: 100-120 to 200-220VAC @10%, 50/60Hz,
0.16/0.08A, external 110/220 volt select switch, IEC
Power Inlet, (2) 5mm Fuses
DC Mains: DC Voltage, Input Range of -36 to -72vdc
Current Draw at 48vdc: 75ma @ 3.6watts

Operating Temperature....32º to 122º F (0º to 50º C)
Relative Humidity.............5 to 95% Non-Condensing
Altitude............................0 to 10,000 feet


Dimensions 1U Rackmount

Height ....... 1.75 inches (4.44 cm)
Width ........ 17.00 inches (43.18 cm)
Length ....... 9.00 inches (22.86 cm)



1U Rackmount, 6 Pounds (2.267Kg)

Warranty Three Years, Return To Factory
Ordering Information: Part # 243000, Model: DBU-TTL
Description: DBU-TTL, 1U Rack Mount 8-Port TTL
Included with each unit: 1) Operations Manual

2) U.S.A. Grounded Power Cord, Part # 713015

3) Optional Power Cords

....A) United Kingdom, Part # 713016

....B) Continental Europe, Part # 713017

....C) Other: Specify Country on Purchase Order


1) Spare Data Center Fuses

....A) 160ma Fuse, Qty (2) Part # 714000

....B) 80ma Fuse, Qty (2) Part # 714001