When you start the program the SI_SCOPE window is in the 25 line mode, with ASCII display format. All data that is received will be displayed in an ASCII format.
(FIGURE A)
The above figure illustrates
what SI_SCOPE would display while in ASCII
mode if the DTE device sent the character sequence DTE DATA followed by an ENQ
and the DCE device responded with the sequence DCE DATA and an ENQ. Notice how
the control code ENQ characters are displayed, standard ASCII. Also notice how
the data from the DCE device is displayed in cyan on one line and the data from
the DTE device is displayed in white on the other.
SI_SCOPE has another display format that will display the ASCII control codes as their hexadecimal values, this is called the ASCII-HEX display format.
To change the display to ASCII-HEX go to the functions menu and select the "Change Display Format" option. A small menu will pop up with 4 options, choose the second option ASCII-HEX. When in this display format SI_SCOPE will display the data shown in figure-A like that in figure-B.
(FIGURE-B)
Notice how the ENQ ASCII control code is now displayed as hex 05 instead of its ASCII code. Also notice that the ENQ from the DCE device is white on an cyan background, and the ENQ from the DTE is white on a red background.
In this format SI_SCOPE will display all received data as two digit hexadecimal numbers. To set SI_SCOPE to HEX display format follow the same procedure as described for ASCII-HEX, except this time choose the HEX option from the small sub menu. The data shown in figure-B would change to the format shown in figure-C.
(FIGURE-C)
To read this display you read each character from top to bottom. Therefore the DTE device sent the hexadecimal characters 44h 54h 45h 20h 44h 41h 54h 41h 05h.
You can select how many lines of data SI_SCOPE will display on the screen. To change the screen mode go to the functions menu and select "Change Screen Mode". Choose the desired format from the small sub menu of choices that appears. You can change modes at any time during a session with out affecting your data.