SW980A SW981A SW982A MARCH 2000 SW980AE SW981AE SW982AE Local/Remote Electronic Switches 2 TO 1 OTE / REM A C LO LWITCH S ® K BOX BLA4C 6-5500 724-7 R B TE REMO A A B PWR 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.
FCC/IC/CE STATEMENTS 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.
LOCAL/REMOTE ELECTRONIC SWITCHES NORMAS OFICIALES MEXICANAS (NOM) ELECTRICAL SAFETY STATEMENT INSTRUCCIONES DE SEGURIDAD 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. 5.
NOM STATEMENT, TRADEMARKS 12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización del equipo no sea eliminada. 13. Los cables de la fuente de poder deben ser guiados de tal manera que no sean pisados ni pellizcados por objetos colocados sobre o contra ellos, poniendo particular atención a los contactos y receptáculos donde salen del aparato. 14. El equipo eléctrico debe ser limpiado únicamente de acuerdo a las recomendaciones del fabricante. 15.
LOCAL/REMOTE ELECTRONIC SWITCHES Contents Chapter Page 1. Specifications ............................................................................................. 5 2. Introduction ............................................................................................... 7 3. Installation and Configuration ................................................................. 8 3.1 Before You Install ................................................................................ 8 3.
CHAPTER 1: Specifications 1.
LOCAL/REMOTE ELECTRONIC SWITCHES Remote Input Logic Levels — VIH greater than 2.5 volts, maximum +15 volts; VIL less than 0.5 volts, minimum –15 volts NOTE For dry-contact operation, the total externalconnection DC resistance must be less than 240 ohms when the dry contact is closed for the Local/Remote Electronic Switch to correctly read this condition as a “low” input.
CHAPTER 2: Introduction 2. Introduction Switching between data lines manually can often damage the connected equipment, because this relatively slow and imprecise action can cause data-line surges and spikes large enough to damage today’s sensitive circuitry. With the Local/Remote Electronic Switches, you can eliminate this potential hazard. Their electronic switching action provides surgeless, spikeless changeovers—something a mechanical switch just can’t do.
LOCAL/REMOTE ELECTRONIC SWITCHES 3. Installation and Configuration 3.1 Before You Install Check the box and its contents before you begin installing your Local/Remote Electronic Switch. You should have received one Switch unit, one AC power supply, and one copy of this manual. If you didn’t receive all of these items, or if they have sustained damage that does not seem to be shipping-related, notify Black Box right away.
CHAPTER 3: Installation and Configuration 3.2 The Setup Procedure Installing and configuring a Local/Remote Electronic Switch is relatively quick and easy, and will vary only slightly depending on which model you’ve chosen. Follow these steps: (Steps 1 through 4 are for remotely switched applications only:) 1. Make sure that the Switch is unplugged (is not receiving AC power).
LOCAL/REMOTE ELECTRONIC SWITCHES W1 A B C TB1 FRONT REAR Figure 3-1. PCB layout of the SW980 models.
CHAPTER 3: Installation and Configuration TB1 A B C W1 FRONT REAR Figure 3-2. PCB layout of the SW981 models.
LOCAL/REMOTE ELECTRONIC SWITCHES W2 A W3 B A C B C TB1 REAR FRONT Figure 3-3. PCB layout of the SW982 models.
CHAPTER 3: Installation and Configuration (text continued from page 9) 3. If you will be performing remote switching using a cable that is unterminated at the Switch end, attach the cable’s wires to the appropriate positions of the 4-position terminal block labeled “TB1” (refer to Figures 3-1 through 3-3 on pages 10 through 12 and to Tables 4-1 and 4-2 on pages 20 and 21). Connect the ground of the remote driver, or one side of the dry contact, to (either of) the terminal block’s ground pin(s).
LOCAL/REMOTE ELECTRONIC SWITCHES B A BB AA SERIAL REMOTE PARALLEL Figure 3-5. Rear panel of the SW981 models. B A SERIAL PARALLEL REMOTE C E D Figure 3-6. Rear panel of the SW982 models.
CHAPTER 3: Installation and Configuration 6. Set the DIP switch(es) as appropriate for your application. Refer to Table 3-1 and Figure 3-7 below, and keep in mind that OFF = UP and ON = DOWN. Table 3-1. Possible Settings for Switches S2 and S3 All 25 leads of the Local/Remote Electronic Switch’s DB25 connectors are straightthrough and are isolated from one another.
LOCAL/REMOTE ELECTRONIC SWITCHES 7. Put the Switch in the site you’ve selected. 8. Shut off the equipment you plan to connect to the Switch. 9A. SW980 and SW982 units only: Connect the cable from the “common” device (the one that’s going to access—or be shared by—the other devices) to the common connector (marked “C”) on the Switch’s rear panel.
CHAPTER 4: Operation 4. Operation 4.1 Local Switching 4.1.1 ABC AND ABCDE SWITCHES (SW980 AND SW982 UNITS) Refer to Figure 4-1 below: Test your Local/Remote Electronic Switch system by having the common device send data to, or receive data from, branch devices “A” and “B” (and, for SW982 units, “D” and “E”), one after the other. Switch between branch devices by manually turning the knob on the Switch’s front panel.
LOCAL/REMOTE ELECTRONIC SWITCHES 4.1.2 X SWITCHES (SW981 UNITS) Refer to Figure 4-2 below: Test your Local/Remote Electronic Switch system by having each source device (“A” and “B”) send data to each destination device (“AA” and “BB”), one after the other. Switch between data pathways by manually turning the knob on the Switch’s front panel. “X” SWITCH A AA B BB Connections made are A-AA & B-BB or A-BB & B-AA Figure 4-2. Switching in the SW981 models.
CHAPTER 4: Operation 4.2 Remote Switching When you do remote switching, keep these things in mind: • The knob on the Switch’s front panel must be in the “REMOTE” position. • The Switch interprets any voltage more negative than approximately 1.4 volts as a “low” and any voltage more positive than approximately 1.4 volts as a “high” (see the “Remote Input Logic Levels” spec in Chapter 1 for maximum and minimum switching points).
LOCAL/REMOTE ELECTRONIC SWITCHES Table 4-1.
CHAPTER 4: Operation Table 4-2.
LOCAL/REMOTE ELECTRONIC SWITCHES 4.3 Test Results If data doesn’t seem to be getting through when a device on one side of the Switch is connected to a device on the other side of the Switch, make sure that: • Both devices are turned on and receiving power. • The Switch is receiving power (its “POWER” LED should be lit). • The Switch’s front-panel knob is set properly. • All cables are good and cable connections are secure. • Any software involved is configured and operating correctly.
CHAPTER 5: Troubleshooting 5. Troubleshooting 5.1 Calling Black Box If you determine that your Local/Remote Electronic Switch is malfunctioning, do not attempt to alter or repair the unit. It contains no user-serviceable parts. Call Black Box Technical Support at 724-746-5500. Before you do, make a record of the history of the problem.
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