Technical data

3.2.1.1 Asynchronous Controllers Without Modem Support
Before using any peripheral device connected to a serial communications
controller, check the following:
• Make sure the peripheral device is properly connected to the system.
• Make sure the peripheral device is properly installed, plugged into an
appropriate power source, and turned on.
• Make sure the peripheral device is properly set up. Set-up involves
choosing how the device operates. Some set-up choices are matters of
personal choice, for example, the number of columns that display on
a terminal screen. Others, like baud rate (a measure of the speed at
which data is transmitted over a data line), must match the system
setting if the peripheral device and system are to communicate. Refer
to your terminal or printer manual for complete set-up instructions.
Generally, the default settings for your terminal are acceptable.
While most default settings are acceptable, you should perform the set-
up procedure for your terminal to ensure appropriate set-up values.
The two examples below provide set-up instructions for VT300-series
and VT400-series terminals.
For VT300- and VT400-Series Terminals:
1. Press
Set-Up
to display the Set-Up Directory screen.
2. Use the arrow keys to select the Communications Set-Up option
and press
Enter
.
3. Make sure the Transmit Speed option in the Current Setting column
is set to 9600. Use the Enter key to change the setting.
4. Make sure the Receive Speed option in the Current Setting column
is set to receive=transmit. Use the down arrow to move the cursor
to this option, and the Enter key to change the setting.
5. Press
Select
to return to the Set-Up Directory screen.
6. Use the arrow keys to select the Global Set-Up option and press
Enter
.
7. Select the Comm Port option.
8. If the port in the Current Setting column is selected for RS–232,
press
Enter
to select the DEC–423 port option.
9. Press
Select
to return to the Set-Up Directory screen.
Operating the System Options 3–39