Epson C82307, C823088 Figure 7. Receiver Circuit Diagram, Figure 6. Transmitter Circuit Diagram

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RS-422A Transmitter/Receiver Circuit Diagrams

Figure 6. Transmitter Circuit DiagramFigure 7. Receiver Circuit Diagram

Contents

Page FCC COMPLIANCE STATEMENT FOR AMERICAN USERS Page TABLE OF CONTENTS INTRODUCTION About this guide SETTING THE CONDITIONS Card layout DIP switch and jumper settings DIP switches Table 1. DIP switch Data word structure Table 2. Word structure Table 3. Parity check Table 4. DIP switch RS-232D 19,200 BPS Handshaking selection and Interface selection Page DIP switch 3 (Interface operation) Table 9. DIP switch Buffer full recovery timing Table 10. Buffer full recovery timing Jumpers Figure 2. Jumpers Table 11. Jumper settings DATA ENTRY Serial data communications About data entry Handshaking protocol X-on/X-offProtocol Figure 3. X-on/X-offtiming DTR protocol Buffer Operation Disabled Table 12. Flag set/reset conditions Page SELF TEST Table 13. Self-testmodes Loopback mode Table 14. Terminal pin connections Line-monitormode SPECIFICATIONS 5 . Handshaking Table 15. Handshaking HARDWARE DESCRIPTION Page Page CIRCUIT DIAGRAMS Figure 6. Transmitter Circuit Diagram Figure 7. Receiver Circuit Diagram Figure 8. Transmitter Circuit Diagram Figure 9. Receiver Circuit Diagram INSTALLATION