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These switches control the way in which the SPC-8K
expects the data to come from your computer, and will
return data to your computer when necessary. You
must also make sure your computer’s serial ports match
the settings you make on the SPC-8K.
You will need a serial cable in addition to the SPC-8K
(see page 71).
Baud rate
You must “tell” the SPC-8K the baud rate of your com-
puter’s serial port (how fast it can expect to receive data
from your computer).
Use switches
6 through 8 for this purpose. Set them as
described in the table below:
Baud rate Sw 6 I Sw 7
Sw 8
I I I
150 I OFF
I OFF
I OFF
I
I
I
300
OFF OFF
ON
600
OFF
ON OFF
1200 OFF
ON
ON
2400 ON
OFF OFF
4800
ON OFF
~~̇ON
9600.
ON ON
OFF
19200
ON ON
ON
Number of bits in a word
Set switch 1 to ON for 8 data bits in a serial word (this
will be the most commonly-used setting). Set Switch 1to
OFF for 7-bit use.
Parity
A “parity bit” can be added to each word to make the
total value of bits to be odd or even. This allows for error
checking of the data as it is transmitted over the serial
line. Use switches 2 and 5 to set this.
Page68