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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
FEBRUARY 1998
IC933A
IC944A
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Related Manuals for Black Box V.24/X.21
Summary of Contents for Black Box V.24/X.21
- Page 1 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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Page 2: Specifications
V.24/X.21 AND X.21/V.24 INTERFACE CONVERTERS 1. Specifications Up to 200 Kbps Speed — Length — 6.5 feet (2 m) Synchronous, full- or half-duplex Operation — Interfaces — RS-232C/V.24, X.21 Connectors — IC933A: (1) DB25 (male) DTE, (1) DB15 (male) DCE;... - Page 3 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.
- Page 4 V.24/X.21 AND X.21/V.24 INTERFACE CONVERTERS 3. General The V.24/X.21 Interface Converter Model IC933A connects and converts from V.24 DTE to X.21 DCE. Model IC944A connects and converts from X.21 DTE to V.24 DCE. Users can take advantage of high-speed trunk lines with X.21 interfaces and still use existing V.24 multiplexers, modems, and...
- Page 5 V.24/X.21 AND X.21/V.24 INTERFACE CONVERTERS 4. Applications Model IC933A installs between a V.24 terminal or multiplexor and an X.21 modem and Model IC944A installs between an X.21 terminal or multiplexor and a V.24 modem. Figures 4-1 and 4-2 illustrate these applications.
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Page 6: Installation
V.24/X.21 AND X.21/V.24 INTERFACE CONVERTERS 5. Installation 5.1 Installing the V.24 DTE/X.21 DCE (IC933A) Model To install the unit, simply plug its DB25 (male) connector directly into the DB25 (female) connector on the RS-232/V.24 device (DTE). Attach the unit’s DB15 (male) connector to the DB15 (female) connector on the X.21 device... - Page 7 V.24/X.21 AND X.21/V.24 INTERFACE CONVERTERS 6. Pinning Diagrams Figures 6-1 and 6-2 show the pinning of each unit.
- Page 8 V.24/X.21 AND X.21/V.24 INTERFACE CONVERTERS V.24 DTE/X.21 DCE Schematic Diagram V.24 (DTE) X.21 (DCE) DB25 (Male) DB15 (Male) Signal GND Protective Shield Figure 6-1. IC933A Pinning.
- Page 9 V.24/X.21 AND X.21/V.24 INTERFACE CONVERTERS X.21 DTE/V.24 DCE Schematic Diagram X.21 (DTE) V.24 (DCE) DB15 (Female) DB25 (Male) Shield Protective GND Signal GND Signal GND Ck In Elastic Ck In Buffer Data Out Data In Figure 6-2. IC944A Pinning.
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