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async to sync interface converter product photo

RS-232 to RS-449 or RS-530


Features / Benefits

  • Interface - RS-232, DB-25 Male (To DTE) and  RS-449/RS-530 Female DB-25 (ToDCE)
  • Data Rates - Synchronous to 38.4bps and supports
    3/4 baud rates
  • Synchronous data rates are automatically adjusted
  • Ac Mains Powered, 110 / 220 VAC Switch Selectable
  • Switch selectable - 8 to 11 bits
  • CCITT V.14 and V.22 compliant
  • Supports full and half duplex operation
  • Compact and Easy To Install


The ASC-232 / V.11 Async to Sync Converter is designed to allow RS-232
async terminal equipment to transmit over higher speed V.11 compliant sync
modems. The ASC-232 / V.11 devices are used in pairs, one at each end of the
communication link or in multiples as when used in a multi-drop communication

The ASC-232 / V.11 supports async data of 8, 9, 10 and 11 bits, including the
start and stop bit. Standard data rates from 1200 to 38.4bps and 3/4 rates of
900 to 28.8bps are supported for synchronous transmission. The ASC-232 /
V.11 automatically adjusts the sync data rate to match the DTE’s output rate, no
data rate strapping is required.

Stop bit reduction is provided when the async data rate is faster than the sync
data rate, ensuring reliable data communications.
The ASC-232 / V.11 has convenient front panel LED’s for control signal status.
AC mains power supply allows the data interface signals to drive longer distances
than interface powered devices.

The ASC-232 / V.11 is housed in a sturdy metal enclosure and will provide in
excess of 100,000 hours of reliable service. The unit is AC mains powered and
is switch selectable for 110 / 220 VAC.

The ASC-232 / V.11 has a three year warranty and a 24 hour turnaround on
warranty repairs.

aync to sync converter application diagram


Application RS-232 async terminal to sync RS-422/RS-530 modem
Conversion, full or half duplex
Capacity One sync RS-422/530 modem
One async RS-232 terminal
Serial Data Interface RS-232 to DTE
V.11 or RS-422, RS-530 to DCE
Data Format Data transparent at all data rates Conforms to CCITT V.14 and V.22, (Async to Sync conversion))
Data Rates 1200 to 38.4bps
900 to 28.8bps
Switches Provided for async data set-up, stop bit reduction and signal to frame ground
Physical Interface Female DB-25 Connector to Modem
Female DB-25 Connector for Terminal
Power Source AC mains powered
110 / 220 VAC switch seletable
+/-10%, 50 / 60 Hz, IEC Power Inlet
Environmental Operating Temperature....32° to 122° F (0° to 50° C)

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

Altitude.............................0 to 10,000 feet
Dimensions Height ....... 1.75 inches (4.44 cm)

Width ........ 7.90 inches (20.07 cm)

Length ....... 9.00 inches (22.86 cm)
Weight 2 pound (0.914Kg)
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 Part #: 163000
Model: ASC-232 / V.11
Description: RS-232 Async to V.11 sync converter, AC Power
Included with each unit: 1) Installation Guide