Star Micronics DP8340R user manual When Power is Supplied by the User

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11. WHEN POWER IS SUPPLIED BY THE USER

When printer power is supplied by the user rather than through the accessory power source unit, please be careful of the following points.

Note 1: The power supply must be +12V +10%–5%2A or above. An electrolytic ca- pacitor (C = 4700µF/25V to 6800µF/25V) must be connected across the output of the power supply.

Note 2: A DC power plug is available as an option.

GND

+12V

GND

Reference: Design the power supply referring to the power supply circuit shown below.

Note: A line noise filter must be used to prevent line transients from passing through power supply. Filter design to be determined by environmental noise requirements.

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Contents DOT Matrix Printer DP8340R Series Serial Interface Trademark acknowledgments Table of Contents RS-232C Current Loop Setting of the DIP Switches DIP-SW Outline Model Name NotationUnpacking and Installation UnpackingInstallation of Paper Holders and Re-Roll Prevention Guard Installation of Paper HoldersInstallation of Re-Roll Prevention Handling NotesPower Supply Unit Part Identification and NomenclaturePrinter Printer Front ViewPart Functional Description Installation of INK Ribbon and Paper Installation of Ink RibbonInstallation of Ink Ribbon Removal of Ink RibbonPaper Insertion For Roll PaperReplace the Printer Cover Validation Option Installation Roll Paper RemovalControl Codes ESC F Code ESC @ 1BH 40H Printer initialization ESC P Remarks Character Code List General Specifications Input Output AC 100 240 DC 12.0 V± 5% 47Hz 63 Hz Roll Paper and Print Area External Dimensions Printer Interface Specifications Interface CircuitSetting of the DIP Switches DIP-SW2Connectors and Signals Error Condition Alarm ModeInterface Connections Peripheral Unit Drive Circuit Cable ConnectionControl Codes Peripheral Drive CircuitInterface for Model DP8340RD D-SUB 25 PIN Connector RS-232C Current LoopSetting of the DIP Switches Removal of the Bottom Cover Jumper SettingSetting of Jumper CTS D-Sub 25 Pin Connector Peripheral Unit Drive Circuit Peripheral Drive Circuit Paper Empty DTR Mode 1 BlockMachine Error ON/X-OFF Mode Framing Error ParitySTX-ETX Mode STX-ETX Mode Flow Diagram Character Code List Page International Character Sets When Power is Supplied by the User Other parameters may be determined by user