Black Box IC933A, IC944A User Manual
FEBRUARY 1998
IC933A
IC944A
V.24/X.21 Interface Converter
X.21/V.24 Interface Converter
CUSTOMER SUPPORT INFORMATION
Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX
FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746
Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: info@blackbox.com
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V.24/X.21 AND X.21/V.24 INTERFACE CONVERTERS
1. Specifications
Speed — Up to 200 Kbps
Length — 6.5 feet (2 m)
Operation — Synchronous, full- or half-duplex
Interfaces — RS-232C/V.24, X.21
Connectors — IC933A: (1) DB25 (male) DTE,
(1) DB15 (male) DCE;
IC944A: (1) DB25 (male) DCE,
(1) DB15 (female) DTE
Power — 6.3 volts DC (35 mw) from pin 2,
4, or 20 of the RS-232 interface
Size — 0.9"H x 2.1"W x 4.3"D
(2.2 x 5.5 x 9 cm)
Weight — 0.8 lb. (0.4 kg)
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V.24/X.21 AND X.21/V.24 INTERFACE CONVERTERS
2. Features
•Converts RS-232/V.24 to X.21 interface
and vice versa.
•Equipped with cable and connectors.
•Transparent to protocol.
•Installs immediately.
•Operates without AC power.
•Compact and lightweight.
•Bidirectional data transfer.
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