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APPENDIX B _ _ _ _
Setting The High Speed
RS232-C Interface Switches
Setting up a high speed RS232-C interface cable requires a
great deal of technical know-how. There are seven protocols
to choose from and three wires available to monitor the
printer's busy signals. If you are unsure of the proper switch
settings after reading this section, contact your dealer for
assistance.
You will find two switch banks on the high speed RS232-C
board which have to be set to match your computer's re-
quirements.
We have provided the switch settings for several
popular computers systems in Appendix D of this manual
and as Users Tips available from your dealer. If you would
prefer to learn how to set them yourself, we have explained
each switch below
.
There are 16 switches on the serial interface board located on
adjacent switch
banks.
They are labeled SW1
,
1 through 8 and
SW2, 1 through 8. To make it easier for you we have labeled
them 1-8 then 9-16. See Figure B-1.
Switch 1:
Regulates parity from the computer. Your com-
puter sends data in odd or even parity, with or
without parity. If it doesn't use parity, then the
setting of this switch doesn't
matter-
the printer
will run either way. However, for odd parity
applications, set Switch 1 to ON and for even
parity, set Switch 1 to OFF
.
Switch 2
:
Selects whether the computer is sending data
with or without parity. If the switch is ON,
the printer will not expect parity data. If
Switch 2 is OFF, the printer expects parity
and Switch 1 will regulate whether it's odd
or even.
Switch 3
:
Along with the jumper plugs on the control cir-
cuit board
(see
page 31), this switch selects 7 or
8 bit data. The ON side calls for 7 bit data. The
OFF side calls for 8 bit data. Make sure jumper
plug SP1 agrees with this selection
.
B-1
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