21
4 Set switches 1 and 2 to the baud rate that you have
specified for the serial interface using your computer’s
operating system.
◆ For 38,400 bits per second (bps), set switches 1 and
2 to the OFF position.
◆ For 19,200 bps, set switch 1 to the ON position and
switch 2 to the OFF position.
◆ For 9,600 bps, set switch 1 to the OFF position and
switch 2 to the ON position.
◆ For 2,400 bps, set switches 1 and 2 to the ON
position.
5 Set the DIP switches to the handshaking method your
computer is using to communicate with the printer.
◆ For Xon / Xoff handshaking, set switch 7 to the OFF
position (Activate). When Xon / Xoff handshaking is
active, DTR hardware handshaking is disabled.
◆ For DTR hardware handshaking, set switch 7 to the
ON position to disable Xon / Xoff handshaking.
If you have a Letter/A4 or Letter/Legal printer
model, switch 6 controls the DTR polarity. Set switch
6 to the OFF position (Active High) in most
situations.
If you have a Letter/Legal/A4 printer model, switch
6 (together with switch 5) controls the default
paper size and character set. For these models,
DTR hardware handshaking is permanently set to
“Active High.”
To identify your printer model, see page 18.
NOTE:
Your computer controls the DTR polarity for DTR
hardware handshaking. Most computers use high
polarity. If your computer is using low polarity and if
you have a Letter/A4 or Letter/Legal printer model,
set switch 6 to the ON (Active Low) position.
Connect the RS-232C serial Interface cable to the printer
and computer by following the instructions for “Parallel
Interface” on page 19.
Setting Up the Printer
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