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Norsk Data printer - Epson1.4.6.1 - Norsk Data printer - Epson


524111 - Epson interface card 8148

Description

  • The Epson RS-232 interface for LX-80 and LX-86 printers. It has a built-in 2 KB data buffer and both hardware and software (XON/XOFF) handshake.
  • Using 1 piece of SRAM chip for system memory/data buffer (version A), 8192 x 8 bits x 1 piece (total 8 KB).
  • Using 1 piece of SRAM chip for system memory/data buffer (version B), 2048 x 8 bits x 1 piece (total 2 KB).
  • PCB size 100 x 120 mm, 2 layers
  • Release date 02. Nov. 1985

Chipset

  • Version A
  • Version B
    • PROM 0IFA
    • NEC D8035
    • HM6116 - SRAM

LEDs

  • None

Straps

  • Various straps placed around on the PCB
    StrapOnOffFunctions
    J1OnOffOn: Pull up TTY-TXD to +12V via 470-ohm resistor
    J2OnOffOn: Connect TTY-TXD Return to signal ground
    J3OnOffOn: Connect TTY-TXD Return to signal ground
    J4OnOffOn: Pull up TTY-TXD to +12V via 470-ohm resistor
    J5OnOffOn: Pull up DSR to +12V
    J6OnOffOn: Pull up DCD to +12V
    J8AOnOffOn: Do not send X-ON/X-OFF signal
    J8BOnOffOn: Send X-ON/X-OFF signal
    JXOnOffOn: X-ON/X-OFF control is used for handshaking in Current Loop mode
    JFOnOffOn: Flag control is used for handshaking in Current Loop mode
    JCLOnOffOn: Receive data in Current Loop mode
    JRSOnOffOn: Receive Data in RS-232C mode

Switches

  • Switch 1
    No.OnOffFunctions
    1-17 bits8 bitsWord length
    1-2EnableDisableParity check
    1-3EvenOddParity selection
    1-4NegativePositiveFlag negative/positive polarization
    1-5see belowBit rate selection
    1-6
    1-7
    1-8
    1-51-61-71-8Bit rate (BPS)
    OnOnOnOn75
    OnOnOnOff110
    OnOnOffOn134.5
    OnOnOffOff150
    OnOffOnOn200
    OnOffOnOff300
    OnOffOffOn600
    OnOffOffOff1200
    OffOnOnOn1800
    OffOnOnOff2400
    OffOnOffOn4800
    OffOnOffOff9600
    OffOffOnOn19200
    OffOffOnOff19200
    OffOffOffOn19200
    OffOffOffOff19200

  • Switch 2
    No.OnOffFunctions
    2-1EnableDisableI/F board enable/disable
    2-2EnableDisableBuffer operation
    2-3see belowFlag reset timing
    2-4
    2-5EnableDisableSelf-test enable/disable (version A only)
    2-6Line monitorLoopbackSelf-test mode selection (version A only)
    2-32-4Vacant bytes
    OffOff216
    OffOn352
    OnOff624
    OnOn1936

Connectors

  • Standard Serial (RS-232) DB25 connector
  • Connector for the main PCB inside the printer
ND-524111
Component side, Epson interface card 8148 - Y49022610000 (A)

ND-524111
Solder side, Epson interface card 8148 - Y49022610000 (A)

ND-524111
Component side, Epson interface card 8145 - Y49020800000 (B)

ND-524111
Solder side, Epson interface card 8145 - Y49020800000 (B)

This page was last updated 06. Nov. 2023
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