CHAPTER 7: Operation
47
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•
Character Echo Test (Option 4) —
The Character Echo Test causes the LinkUp 5294 to echo each
key typed from the keyboard. This includes Attention Keys and Escape (ESC) sequences. Care should
be taken in using this test. Typing other than the displayable ASCII character set (Hex 20 through
Hex 7E) may cause unpredictable results. Type two <Enter>s to return to the options menu.
7.4 System Management Mode
Two Consecutive CR's - Options Menu
System Management Mode utilizes various port tests and traces which use the following conventions
(identical to Port Test Mode):
• Data from the LinkUp 5294 to the terminal or host is enclosed in square brackets ([ ]).
• Data from the terminal or host to the LinkUp 5294 is displayed without brackets.
• Complete messages, which could consist of only a single character, are separated by a space.
• Data is displayed on the first 23 lines of the screen, with line 24 reserved for messages. If the terminal
supports dual intensity, the first set of 23 data lines is displayed in low intensity. When 23 lines have
been displayed, the second set of 23 lines overwrites the first data in high intensity.The alternation
between high and low density makes the most recent data easy to locate. If the terminal being used
does not support dual intensity, all wrapped data is displayed in the same intensity.
• The <SPACE> bar is a toggle which freezes and restarts the display. When the display is frozen, data is
buffered by the LinkUp 5294. If this buffer overflows, a string of asterisks (*) will appear in the trace
data.
• The <Enter> key ends the trace and returns to the Options menu.
• To clear stored trace data, type (*).
To access System Management Mode, establish the connection to the LinkUp 5294 either by direct
connection or by a dial-up line. Answer the Enter Device Type prompt with the appropriate response for
your terminal type.
When the LinkUp 5294 prompts for entry of an LU (Logical Unit) number, type 1 followed by <Enter>.
The Port test mode menu will appear on the screen. Type 1 <Enter> at the Enter Choice prompt to
access System Management Mode.
