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data broadcast unit serial data splitter

Features / Benefits

  • Interface - EIA RS-232 or ITU V.11 for RS-422, RS-485, X.21 or V.35
  • Data Format: Async
  • Data Rates - RS-232 to 128Kbps, ITU V.11 to 2.048Mbps
  • Switch Selectable for RS-232 or V.11
  • Visual Indication of Data Activity
  • Receive Data Broadcast to sixteen Subchannels
  • Ideal for V-SAT Data Broadcasting
  • Sturdy Metal Rackmount Enclosure
  • 110/220VAC Switch Selectable


The DBU-16 is designed for use in receive only async data broadcast applications. The unit has two separate input ports, capable of accepting RS-232 or RS-422(or any V.11 compliant interface) data. The user must select, via a slide switch the preferred input method. Additionally, the unit has a dedicated cascade port for chaining DBU-16 units together.

The DBU-16 continuously broadcasts receive data from the input port. The input signals are split with the internal circuitry and rebroadcast out on sixteen output ports. The output ports are divided into four modular cards. Each modular card has four output ports capable of RS-232 and RS-422(or any V.11 compliant interface). Front panel LED indicators illuminate in green or yellow depending on the data type(RS-232 or RS-422).

The user may also utilize the DBU-16 as a interface converter. This function allows RS-232 input data to be broadcast as RS-422 data or RS-422 data to be broadcast as RS-232 data. Utilizing RS-422(V.11) can support data transmissions at far greater cable distances than does RS-232. The DBU-16 can support an unlimited amount of receive only devices simultaneously.

The DBU-16 is housed in a sturdy aluminum 1U rackmount 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.


Application Multiple Async Data Broadcasting
Capacity One Input Data Source
Up to Sixteen Output Ports
One Cascade Port(any number of units may be cascaded)
Data Format Data transparent at all data rates
Data Rates RS-232 Up to 128Kbps
RS-422(V.11) Up to 2.048Mbps
Input Ports, Two DB-9 Male Connectors, RS-232 or RS-422(V.11 Compliant)
Output Ports, Sixteen RJ-45 Female Connectors. RS-232 or RS-422 (V.11 Compliant)
Output Connectors RJ-45 Female Connectors
Cascade Port, One DB-9 Female Connector, RS-422 (V.11 Compliant)
Indicators Rear Panel: Power(PWR), Port Select, Cascade Select
Front Panel: RS-232 Data(Green), RS-422 Data(Yellow)
Power Source 100-120 to 200-220VAC @10%, 50/60Hz, 0.16/0.08A, external 110/220 volt select switch, IEC Power Inlet, (2) 5mm Fuses
Environmental Operating Temperature . .32º to 122º F (0º to 50º C)

Relative Humidity.. . . . . . .5 to 95% Non-Condensing

Altitude. . . . . . . . . . . . . ... .0 to 10,000 feet

Dimensions Height ....... 1.75 inches (4.44 cm)

Width ........ 17.00 inches (43.18 cm)

Length ....... 9.00 inches (22.86 cm)
Weight 4.5 pounds (2.1 Kg)

Three Years, Return To Factory

Regulatory Approvals Tested According to UL 60950-1:2010, CAN/CSA-C22.2 No. 60950-1:2003, FCC Part 15, EN55022:2010, ICES-003, Class A
Ordering Information: Part Number: 158000
Model: DBU-16
Description: 16 Port, RS-232/RS-422 Data Broadcast Unit
Included with each unit:

1) Operations Manual

2) Power Cord