English French German Italian Japanese Korean Spanish
Sync to Async adapter product picture

Features / Benefits

  • Interface - Synchronous V.11 supporting RS-422, RS-530 Asynchronous RS-232
  • Data Rates - Sync at 9.6k and Async rate of 19.2k
  • Data Format - 8, N, 1
  • Line Powered
  • Simplex operation of sync to async
  • Compact and Easy To Install


The SV11-AV24 Converter is designed to perform a simplex (one-way) conversion of synchronous V.11 data and clock signals to an asynchronous V.24 data signal. This conversion is accomplished by shifting synchronous input data into an 8-bit shift register using the interface clock, and then shifting the resulting "character" out serially at 19.2Kbps with start and stop bits inserted. Since there are more bits to transmit than received in a given period of time, the receive data clock rate can be any standard rate less the 19.2Kbps, e.g. 9600bps.

Two LED indicators provide operational status for the converter. The "FOP" LED provides a visible indication of the state of the FOP signal lead from the attached V.11 DCE. The "Data" LED indicates the state of the data signal sent to the V.24 DTE on RXD, and returns to OFF after each async character is sent.

Power for the Converter is supplied by the Async V.24 interface, specifically from the DTR and RTS signal leads. Provided one or both of these circuits are ON, there will be sufficient regulated power for the Converter to operate.

The Converter also provides direct connection of the CTS lead on the V.11 interface to the CTS lead of the V.24 interface, and of the FOP lead on the V.11 interface to the DCD lead of the V.24 interface.

The SV11-AV24 has a three year warranty and a 24 hour turnaround on warranty repairs..

sync to async network diagram


Application Sync V.11 balanced to Async RS-232 Conversion
Capacity One sync V.11, RS-422/RS-530 modem
One RS-232 async terminal
Interface Synch: Balanced V.11, RS-422 or RS-530
Async: RS-232 
Data Format Data transparent at all data rates
Data Rates 9.6K Sync
19.2k Async
Switches None
Physical Interface RS-232: Female DB-25 to Terminal
V.11 RS-422: Male DB-25 to Modem
Power Source Line Powered from existing equipment - Draws 8ma - No AC power required
Indicators Data and FOP
Environmental Environmental
Operating Temperature....32º to 122º F (0º to 50º C)
Relative Humidity.............5 to 95%
Altitude............................0 to 10,000 feet
Dimensions Height ....... 0.50 inches (1.27 cm)
Width ........ 1.75 inches (4.44 cm)
Length ....... 1.75 inches (4.44 cm)
Weight 1/2 pound (0.228Kg)
Warranty Three Years, Return To Factory
Regulatory Approvals UL 60950-1:2003, CAN/CSA-C22.2 No. 60950-1:2003FCC Part 15, EN55022:2006, ICES-003, Class A
Ordering Information Model: SV11-AV24
Description: Sync to Async converter
Included with each unit: 1) Installation Guide