NOVEMBER 1995 IC483A IC483AE IC483C IC481A-R2 IC481C-R2 V.35↔RS-422 Interface Converter CUSTOMER SUPPORT INFORMATION Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500) FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018 Web site: www.blackbox.com • E-mail: info@blackbox.
FEDERAL COMMUNICATIONS COMMISSION AND CANADIAN DEPARTMENT OF COMMUNICATIONS RADIO FREQUENCY INTERFERENCE STATEMENTS This equipment generates, uses, and can radiate radio frequency energy and if not installed and used properly, that is, in strict accordance with the manufacturer’s instructions, may cause interference to radio communication.
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CONTENTS Contents Chapter Page 1. SPECIFICATIONS ......................................................................................................................................4 2. INTRODUCTION ......................................................................................................................................5 3. INSTALLATION.........................................................................................................................................6 3.
V.35↔RS422 INTERFACE CONVERTER 1. Specifications Speed — Up to 2.5 Mbps Maximum Transmission Rate — Approximately 2.455 Mbps Interface — RS-422, V.35 Connectors — IC481A-R2: RS-422: (1) DB37 female (pinned to RS-449 specifications); V.35: (1) male 34-pin “M” block IC483A: RS-422: (1) DB37 female (pinned to RS-449 specifications); V.35: (1) female 34-pin “M” block Controls — Jumpers for Pin H Support V.
CHAPTER 2: Introduction 2. Introduction The V.35↔RS-422 Interface Converter comes in both 115-VAC (IC483A) and 230-VAC (IC483AE) standalone units. A card version (IC483C) is available for rackmounting. The rack (RM060) is switch-selectable for either 115-VAC or 230-VAC operation. The V.35↔RS-422 Interface Converter provides bidirectional conversion of all the commonly used V.35 and RS-422 signals.
V.35↔RS422 INTERFACE CONVERTER 3. Installation 3.1 DIP Shunt Settings The V.35↔RS-422 Interface Converter has two jumper selectable configurations determined by DIP shunt settings located inside the unit on the printed circuit board. One configuration is for connecting RS-422 DTE to V.35 DCE. The second configuration is for connecting V.35 DTE to RS-422 DCE. See Figure 3-1 for more information on DIP Shunt settings. DTE DCE A B V.35 DTE STEP 1 XW5 V.
CHAPTER 3: Installation To install the V.35↔RS-422 Interface Converter, follow these steps and refer to Figures 3-1 and 3-2. 1. Set jumper XW6 to V.35 side when configuring the V.35 side of the unit as DTE. Set XW6 to the 422 side when configuring the RS422 side of the unit as DTE. Jumper XW6 affects only the front panel LEDs. 2 & 3. When configuring V.35 as DTE and RS-422 as DCE, set jumpers in sockets labeled XW1B, XW2B, XW3B, XW4A, and XW5A. When configuring V.
V.35↔RS422 INTERFACE CONVERTER 3.2 LEDs The V.35↔RS-422 Interface Converter is equipped with ten LED indicators located on the front panel. The row of type above the LEDs indicates the uses of the LEDs for a RS422 DTE/V.35 DCE configuration. The row of type below the LEDs indicates the uses of the LEDs for a V.35DTE/RS422 DCE configuration. Refer to Figure 3-3. In the card version, the LED’s distinction is on the pull lever. Figure 3-3. Front Panel LEDs.
CHAPTER 4: Ground Strap and Pin Connections 4. Ground Strap and Pin Connections 4.1 Ground Strap Signal grounds (Pins 19, 20, and 37 on the 422 interface and Pin B on the V.35 interface) are connected together, but not connected to chassis ground (Pin A). However, for applications requiring the grounds at a common reference point, the grounds can be connected by installing a jumper strap across W3 located at the rear of the printed circuit board between J1 and P1.
V.35↔RS422 INTERFACE CONVERTER 4.2 Pin Connections Figures 4-1 and 4-2 show the pin connections for the V.35↔RS-422 Interface Converter. The illuminated LEDs in these figures indicate incoming signals only. The unit is shipped without the jumper (Rx) between signal ground and chassis ground. The RS-422 port is configured DTE and the V.35 port is configured DCE. For operation with the RS422 port as DCE and the V.35 port as DTE, the signal directions are reversed1.
CHAPTER 4: Ground Strap and Pin Connections 4 22 4 22 P S P S DS5 DS6 TD 6 24 R T R T DS6 DS5 C C DS3 DS1 D D DS1 DS3 E E DS9 13 31 DS4 DS2 F DS4 RR Y AA DS8 V X V X DS7 12 DS7 RC 17 35 12 30 CTS DS1 DS2 RTS RR DS3 DS4 30 U W C A DS10 TC 8 26 TC 8 26 SD 5 23 Y AA DS8 DSR 13 31 DTR/DM F 5 23 CTS 11 29 CTS 11 29 RTS 9 27 RTS 9 27 RD 7 25 RD 7 25 TD 6 24 RC A B W2 H C C H B W1 DS9 TD RD RC TC DM DS5 DS6 DS7 DS8 DS9 POWER Figure 4-1.
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