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AS /2 AUTO SWITCH
1 P / P 1 / 1 S / S 1
User’s Manual
0 Copyright 1990 ATENB International CO., LTD.
Manual part NO. PAPE-0092-200
AS-81 AS-41 AS-81 AS-41
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NOTICE This manual is written for the Auto Switch products of AS-41 1 P/41 1 S and AS-81 . S 1 1 8 / P 1 Most of the operations of these models are the some, and differences will be specified. The last character ‘P’ and ‘S’ of each model’s string means the parallel interface and the serial interface respectively. In this manual, is used to represent all the models of AS-41 1 AS-41 1 S and AS-81 1 P/81 1 S. When you purchase this product it should contain the following items. PACKAGE CHECKLIST
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TABLE OF CONTENTS FUNCTION OVERVIEW 1 l-l 4 l-2 Function Specifications 6 1-3 Product Limitation 7 Procedure 2-l 11 2-2 13 2-3 As Buffer Card Installation POWER ON PROCEDURE 15 3-l Power On Procedure 15 3-2 Auto Switching Mode 16 3-3 17 Trouble Shooting APPENDIX A ................................. 18 APPENDIX B Centronics Interface Timing Chart .............................. 19 APPENDIX C Preventing Radio &TV Interference ............................................................. Manual Switc
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FUNCTION OVERVIEW 1 FUNCTION OVERVIEW l-1 INTRODUCTION The AS/2 is a high performance and low cost printer sharing device which operates in either auto switching mode or manual switching mode. The four or eight source devices to share one common destination devices. In the auto switching mode the AS/2 automatically locks on and services the source device that requests to link with the common device. e conventional There are four models, AS-41 1 P, AS-41 S 1 AS-81 1 P and AS-81 1 S all belo
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FUNCTION OVERVIEW Auto Switch 1-2 FUNCTION SPECIFICATIONS PARALLEL MODEL FUNCTIONS AS-81 1 P I I / DC 1 0 0 m A * / DC 10 0 m A Power Supply . . - I I Cable Length 6M CONNECTOR INPUT 4 CENTRONICS 8 CENTRONICS (DB-25)Female OUTPUT 1 CENTRONICS 1 CENTRONICS 4 8 LED Printer Ready 1 1 1 1 Buffer Care (Extended) 1 / K 6 5 2 M / 2 M Input Arbitration First Come, First Serve Function Key Manual Select Input Port Selection Time out Selection 5 - 60 sec. Auto From Feed Enabled/Disabled Ooerati
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Auto Switch FUNCTION OVERVIEW SERIAL MODEL FUNCTIONS AS-81 1 s Power Supply AC 300mA (spare) Cable Length 15M INPUT (Female) 4 RS-232C (DCE) 8 RS-232C (DCE) OUTPUT (Male) 1 RS-232C (DTE) 1 RS-232C (DTE) (DB-25) 1 Input Status I 4 I 8 LED Power 1 1 Manual 1 1 Input Arbitration Function Key Manual Select input Port Selection Time out Selection . c e s 0 9 - Operation Temp. 5°C - 40°C T em p - 2 0 ° c - 60 ° c I 0% - I Enclosure Weight 1 8 50 g 2520g Fig. 1-2- l User’s Manual 5 AS-41 1 S/AS-
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FUNCTION OVERVIEW Auto Switch 1-3 PRODUCT LIMITATION AS/2 is a well designed quality product. Its maximum performance and limitation is described as follows. l A S / 2 ' s ‘Hardware’ Handshaking, Xon-Xofl f Handshaking is not allowed. l AS / 2 ' s suitable for all kinds o f 1 P, the cable length is limited to l For models of AS-4 1 1 P and AS-81 no more than 6 meters. l , For models of AS-41 1 S and AS-81 1 S, the cable length is limited to no more than 15 meters. l be E T D or DCE that are s
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2-3 AS Buffer Card Installation AS buffer card has 256K o r bytes of memory and is used to expand the buffer memory of AS-4 1 1 P and AS-8 1 1 P auto switches. Lift up the upper case. 2) Find the 14 x 2 gold pin connector on the PCB for AS-41 1 P users: see Fig 2-3-l. for AS-81 1 P users: see Fig 2-3-2. Push the plastic spacers through the PCB to secure the AS Buffer Card Place the upper case back and tighten the 4 screws back. Fig 2-3-l The AS-4 1 1 P’s Buffer Card Installation User’s Manual
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INSTALLATION Auto Switch Fig 2-3-2 The AS-81 1 P’s Buffer Card Installation 14 User’s Manual AS/2
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POWER ON PROCEDURE 3 POWER ON PROCEDURE POWER ON PROCEDURE 3-1 To reset the AS-81 1 P and AS-41 1 P buffer card), turn off/on power switch. AS-41 1 P (w/o buffer card) can be reset by recycling printer power while it is hooked to a printer. 2) After reset, the input channel’s service are on. Meanwhile, the AS/2 is ready for operation and it enters the auto switching mode automatically. 3-2 AUTO SWITCHING MODE 1) In auto switching mode, all see the input channel’s servic e are on. That mean
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POWER ON PROCEDURE AS/2 Auto Switch 3 ) Connectors are not properly connected, Printer(or output device) is not switched on, If buffer card installed for output ‘READY’ LED reflects buffer readiness. 4 ) serve another channel even though the printing gets interrupted by printer’s power off or printer out of paper, etc. NOTE: Only in the Manual Switching Mode user can force the AS/2 to switch to and service another input channel. 3-3 MANUAL SWITCHING MODE Press the ‘SELECT’ button on the left sid
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APPENDIX A TROUBLE SHOOTING PROBLEM SOLUTIONS Check if power is turned ON or not 1. Check if the Connector of each cable is well Failure of data plugged or not. 3. Check if PRINTER is turned ON or not. 4. Check if paper for PRINTER is well prepared or not. 5. Check if Print command on PC is correct or not. 6. Check if connector at computer’s end has been connected in accordance with menu Data Loss or Error Check if the Handshake mode between the $oo$;uter and AS/2 is the Hardware Handshake If
