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AMT Datasouth AMTACCEL-5350 User Manual

Page 177

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User's Guide

Interfaces C-13

Table C-2. Serial Pin Assignments––continued

Pin

Signal

Source

Printer Usage

9 - 10

Not connected

11

DTR

Printer

Same as signal on pin 20, except
polarity of signal is user-selectable
(signal present when JP1 jumper on
logic board is on pins 2/3)

12 - 19

Not connected

20

DTR

Printer

Goes low when printer buffer is
almost full; returns high when buffer
can hold more data (when DTR hand-
shake is turned off, this signal remains
high at all times)

21 - 24

Not connected

25

DTR–

Printer

Same as signal on pin 20, except
polarity of signal is user-selectable
(signal present when JP1 jumper on
logic board is on pins 1/2)

User's Guide

Interfaces C-13

Table C-2. Serial Pin Assignments––continued

Pin

Signal

Source

Printer Usage

9 - 10

Not connected

11

DTR

Printer

Same as signal on pin 20, except
polarity of signal is user-selectable
(signal present when JP1 jumper on
logic board is on pins 2/3)

12 - 19

Not connected

20

DTR

Printer

Goes low when printer buffer is
almost full; returns high when buffer
can hold more data (when DTR hand-
shake is turned off, this signal remains
high at all times)

21 - 24

Not connected

25

DTR–

Printer

Same as signal on pin 20, except
polarity of signal is user-selectable
(signal present when JP1 jumper on
logic board is on pins 1/2)

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