4-In-1-Out / 1-In-4-Out (Reversible) Bitronics Auto Switch AS-8144B/AS-8441B User's Manual Read this manual thoroughly and follow the installation procedures carefully to prevent any damage to the unit and/or the devices it connects to. ©Copyright 1997-2002 Aten® International Co., Ltd. Manual Part No. PAPE-1109-100 Printed in Taiwan 05/1997 All brand names and trademarks are the registered property of their respective owners.
Packing Checklist • • • 1 x AS-8144B/AS-8441B 1 x User's Manual 1 x 3.5" Diskette (AS-8144B only) If anything is damaged or missing, contact your dealer. NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
Overview The AS-8144B and AS-8441B are automatic, Bitronics, first-come-first-served, data switches. They scan for print job requests from up to four computers and send data to the printer. When any of the computers has access to the printer, the other computers cannot send their own print jobs until the current job is finished. The AS-8441B can also operate as a 1-to-4 selector, allowing you to connect four parallel devices to a single computer. Features • • • • • • • Supports IEEE-1284 nibble mode.
Installation 4-to-1 Mode (AS-8144B & AS-8441B) 1. Turn off all devices. 2. Connect the Bitronics Auto Switch to the computers with DB-25 straight-through male-tomale cables. 3. Connect the Bitronics Auto Switch to the printer with a DB-25 to C-36 male-to-male cable. 4. Set DIP switch segment 3 - located on the side panel - to 4 > 1 mode. 5. Set DIP switch segment 4 for a time out of either 15 or 45 seconds. 6. Turn on your computers and the printer.
Operation 4-to-1 Mode (AS-8144B & AS-8441B) Manual Mode: Under Manual Mode one computer is selected to have access to the printer. Selection is accomplished with a pushbutton located on the side of the switch. Each time the button is pressed, the switch moves from the current port to the next one in the cycle. The port LEDs light to indicate which port has access: Port A (LED A on) -> Port B (LED B on) -> Port D (LED D on) Port E (LED E on) -> Auto (LEDs flash in turn) - then back to Port A.
Appendix Specifications AS-8144B AS-8441B Function 1-4 Power Consumption 4-1 4-1 DC 9V 50mA (max) Cable Length 6m / 20ft (max) Connector Input (Female) 1 x DB-25 4 x DB-25 Connector Output (Female) 4 x DB-25 1 x DB-25 4 x Output Status 4 x Input Status I/P Port Selection X Auto / Manutal O/P Port Selection Software / Manual X Timeout X 15, 45 sec.
Troubleshooting 1. LED locks on a port when a cable is connected: • The Bitronics Auto Switch receives signal glitches and starts time-out counting. If the connecting printer is ready, just wait till the time-out expires. • Reset the switch by turning DIP switch segment 1 ON (down) and then off again. 2. The printer status Windows show "printer not responding" or "cable not connected" intermittently: • The switches do not emulate printer responses.
Limited Warranty IN NO EVENT SHALL THE DIRECT VENDOR S LIABILITY EXCEED THE PRICE PAID FOR THE PRODUCT FORM DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES RESULTING FROM THE USE OF THE PRODUCT, DISK, OR ITS DOCUMENTATION. The direct vendor makes no warranty or representation, expressed, implied, or statutory with respect to the contents or use of this documentation, and specially disclaims its quality, performance, merchantability, or fitness for any particular purpose.
