AMT Datasouth AMTACCEL-5350 User Manual page 177

Table C-2. Serial Pin Assignments––continued
Pin Signal
9 - 10
11 DTR
12 - 19
20 DTR
21 - 24
25 DTR–
Source
Not connected
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)
Not connected
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)
Not connected
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
Printer Usage
Interfaces C-13