JULY 2001 ME110A ME111A ME112A ME113A V.35, RS-530, and RS-232 Modem Eliminators ITOR MON Mod S S CT D RT SD R CUSTOMER SUPPORT INFORMATION 5 r V.3 inato lim em E LB Y DELA D BAU DCD 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.
FCC/IC RFI STATEMENTS, TRADEMARKS FEDERAL COMMUNICATIONS COMMISSION AND INDUSTRY CANADA 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.
V.35, RS-530, AND RS-232 MODEM ELIMINATORS INSTRUCCIONES DE SEGURIDAD (Normas Oficiales Mexicanas Electrical Safety Statement) 1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de que el aparato eléctrico sea operado. 2. Las instrucciones de seguridad y operación deberán ser guardadas para referencia futura. 3. Todas las advertencias en el aparato eléctrico y en sus instrucciones de operación deben ser respetadas. 4. Todas las instrucciones de operación y uso deben ser seguidas.
TABLE OF CONTENTS Contents Chapter Page 1. Specifications ............................................................................................................................................ 4 2. Introduction ............................................................................................................................................. 6 3. Configuration and Installation ................................................................................................................
V.35, RS-530, AND RS-232 MODEM ELIMINATORS 1. Specifications Compliance: FCC Part 15 Class A, IC Class/classe A Interface: ME110A: ITU V.35 (data ports standard, monitor port proprietarily pinned out on DB25); ME111A: ITU V.
CHAPTER 1: Specifications MTBF: 263,000 hours Temperature Tolerance: Operating: 32 to 104˚F (0 to 40˚C); Storage: –4 to +158˚F (–20 to +70˚C) Humidity Tolerance: Up to 95% noncondensing Enclosure: Steel Power: Input: 115 VAC at 50 to 60 Hz, directly from AC outlet through detachable 6-ft. (1.8-m) power cord, IEC 320 inlet, and internal power supply; Consumption: 5 watts Size: 1.5"H x 6.9"W x 8.6"D (3.8 x 17.5 x 21.8 cm) Weight: 5 lb. (2.
V.35, RS-530, AND RS-232 MODEM ELIMINATORS 2. Introduction You can use your V.35, RS-530, or RS-232 Modem Eliminator to connect one DTE (host, PC, or terminal) directly to another without needing to use modems or line drivers, as shown in Figure 2-1. You’ll just run cables from each of the DTEs and attach them to the Modem Eliminator’s data ports. Figure 2-1. Typical application. The units have a full-featured front panel, shown in Figure 2-2.
CHAPTER 3: Configuration and Installation 3. Configuration and Installation 3.1 Switch Setting Place the V.35, RS-530, or RS-232 Modem Eliminator between the DTE devices you want to connect, in a cool, dry place close to an AC outlet. Once you’ve done so, scan Section 3.1.1 for the default settings of the unit’s DIP-switch positions.
V.35, RS-530, AND RS-232 MODEM ELIMINATORS Once you’ve finished setting positions 7 and 8, set the other positions of switch SW5 as necessary. Positions 1 and 2 determine how the Modem Eliminator handles the CTS signal: • Position 1 ON: On data port J1, CTS is permanently ON (held high). • Position 1 OFF (default setting): On data port J1, CTS follows RTS after a delay (user-selectable through the front-panel DELAY switch; see the next section) elapses.
CHAPTER 3: Configuration and Installation 3.1.3 THE FRONT-PANEL BAUD THUMBWHEELS If the Modem Eliminator is set for synchronous operation with internal clocking (DIP switch SW5 positions 7 and 8 both OFF—see Section 3.1.1), turn the unit’s two front-panel BAUD thumbwheels to the setting corresponding to your desired data rate. Refer to Table 3-2; to get any setting listed in the “BAUD-Switch Position” column, turn the left-hand wheel to the “tens” value and the right-hand wheel to the “ones” value.
V.35, RS-530, AND RS-232 MODEM ELIMINATORS 3.2 Cabling After you’ve finished setting the V.35, RS-530, or RS-232 Modem Eliminator’s controls, run cables from the two DTEs to the J1 and J2 connectors on the unit’s rear panel. The length of these data cables should not exceed the maximum recommended in the respective interface specifications. For RS-530 and V.35 specifications, the maximum is 4000 feet (1219.2 meters) with 24-AWG twisted-pair wire at data rates up to 100 kbps.
CHAPTER 4: Operation 4. Operation 4.1 The LEDs While your V.35, RS-530, or RS-232 Modem Eliminator is operating, you can watch its five front-panel LEDs to monitor the data and control signals sent from, and received by, data port J1. The five LEDs indicate the states of these signals: LED V.35 Signal RS-530 Signal RS-232 Signal SD SD A TD A TD RD RD A RD A RD RTS RTS RTS A RTS CTS CTS CTS A CTS DCD DCD (RLSD) DCD (RLSD) A DCD (RLSD) 4.
V.35, RS-530, AND RS-232 MODEM ELIMINATORS 4.3 The Loopback Switch The front panel also contains a slide switch marked “LB” (“loopback”). If ever your data doesn’t seem to be getting across the Modem Eliminator link properly, you can temporarily move this switch to the left-hand (ON) position to have the unit loop the data signals from the devices attached to data ports J1 and J2 back to those devices.
CHAPTER 5: Troubleshooting 5. Troubleshooting 5.1 Contacting Black Box If you determine that your V.35, RS-530, or RS-232 Modem Eliminator is malfunctioning, do not attempt to alter or repair it. It contains no user-serviceable parts. Contact Black Box Technical Support at 724-746-5500. Before you do, make a record of the history of the problem. We will be able to provide more efficient and accurate assistance if you have a complete description, including: • the nature and duration of the problem.
V.35, RS-530, AND RS-232 MODEM ELIMINATORS Appendix: Connector Pinouts The tables in this Appendix show the pin assignments for the Modem Eliminator’s interfaces and connectors: The data ports of the ME110A models are M/34 female connectors pinned for V.35; the monitor port is a DB25 female connector pinned for V.35. See Table A-1. The data ports and monitor port of the ME111A models are DB25 female connectors pinned for V.35. See Table A-1.
APPENDIX: Connector Pinouts Table A-1. Pinouts of the V.35 Modem Eliminator’s (ME110A and ME111A) connectors. V.24 Circ. Ref. V.35 Signal Name Abbr. M/34 Pin (ME110A) DB25 Pin (ME111A) 101 Shield SHD A 1 102 Signal Ground SGND B 7 103 Send Data A Send Data B SD A SD B P S 2 13 104 Receive Data A Receive Data B RD A RD B R T 3 16 105 Request to Send RTS C 4 106 Clear to Send CTS D 5 107 Data Set Ready DSR E 6 108.
V.35, RS-530, AND RS-232 MODEM ELIMINATORS Table A-2. Pinouts of the RS-530 Modem Eliminator’s (ME112A) connectors. 16 V.24 Circ. Ref. RS-530 Signal Name Abbr. DB25 Pin 101 Shield SHD 1 102 Signal Ground SGND 7 103 Transmit Data A Transmit Data B TD A TD B 2 14 104 Receive Data A Receive Data B RD A RD B 3 16 105 Request to Send A Request to Send B RTS A RTS B 4 19 106 Clear to Send A Clear to Send B CTS A CTS B 5 13 107 DCE Ready A DCE Ready B DCR A DCR B 6 22 108.
APPENDIX: Connector Pinouts Table A-3. Pinouts of the RS-232 Modem Eliminator’s (ME113A) connectors. V.24 Circ. Ref. RS-232 Signal Name Abbr. DB25 Pin 101 Shield SHD 1 102 Signal Ground SGND 7 103 Transmit Data Secondary Transmit Data TD STD 2 14 104 Receive Data Secondary Receive Data RD SRD 3 16 105 Request to Send Secondary Request to Send RTS SRTS 4 19 106 Clear to Send Secondary Clear to Send CTS SCTS 5 13 107 Data Set Ready DSR 6 108.
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