10
HIGH SPEED COS-4 AND HIGH SPEED COS-8
Before you install the High Speed COS-4 or High Speed COS-8, you
should configure it for your application.
Section 3.1
describes setting the
front-panel Mode switch to select your desired operating mode.
Section 3.2
describes setting the internal DIP switch SW1 so that the COS operates
using the communication parameters that you need;
Section 3.3
describes
how to choose your arming code by setting the internal DIP switch SW2;
Section 3.4
describes how to use the internal slide switches to set each port
as DTE or DCE.
3.1 Selecting the Operating Mode
Use the slide switch labeled “TX GR TR” on the front of the High-Speed
COS-4 or COS-8 to select which operating mode you want the unit to start
in. In the left-hand (TX) position, the Text mode is selected; in the center
(GR) position, the Graphics mode is selected; in the right-hand (TR)
position, the Transparent mode is selected. In Text and Graphics modes,
the MODE LED is dark; in Transparent mode, the MODE LED is lit to
alert you that switching is diabled until you change modes. (See
Chapter 2
and
Section 5.2
for descriptions of these modes.)
3.2 Setting Communication Parameters
Making sure that the unit is unplugged and powered down, open the High
Speed COS-4 or COS-8 by unscrewing and removing six screws (three on the
left side of the unit, three on the right side), then removing the unit’s cover.
Use the DIP switch labeled SW11 inside the unit to set its communications
parameters. As shown in Table 3-1 on page 12, positions 1 through 3
control the data rate; positions 4 and 5 control the data format; and
positions 7 and 8 control the graphics-mode pause. (Use position 6 for
troubleshooting, when you want the COS to run its barber-pole self-test.)
For first-time configuration, leave the case open to choose the arming code
(see the next section) and set your ports for DTE or DCE (see
Section 3.4
).
3. Configuration
Summary of Contents for High Speed COS-4
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