Chapter 6: Tekterm Application
Tether And Console Port Parameter Settings
Choosing A Character Set
To choose a character set:
• Position the cursor on the appropriate item – for example, ISO – and press
<F1> to display the character set options.
• To activate a character set, press the <RIGHT> or <LEFT> arrow key to set it to “Y”.
Important: If you choose a Chinese character set from the ‘Misc.’ menu and a character sent from the host cannot be displayed on the screen, a shaded box character is used as a substitute.
If you are using a Korean character set, a right arrow character is used as a substitute.
Baud
This parameter determines the bit rate of the port. Allowable values include: 110
300 600 1200 2400 4800 9600 14.4
kbps 19.2
kbps 38.4
kbps
56.0
kbps 57.6
kbps 115.2
kbps 128.0
kbps or 256.0
kbps.
Data Bits
This parameter determines the number of bits for the data going through this port.
Possible values are: 6, 7, 8 .
Parity
This parameter determines the type of parity checking used on the data going through the port. The options are: none , odd , even , mark and space .
Stop Bits
This parameter specifies the number of stop bits – 1, 1.5, 2 – used for asynchronous communication.
Flow Control
This parameter selects the type of flow control used in your hand-held computer.
The 7535 can perform XON/XOFF ( Software ) handshaking.
The function of each mode is as follows:
Enable: Used to input and output data.
Supports XON/XOFF or no handshaking.
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Tether And Console Port Parameter Settings
Print: Used to output data only. All input characters except XON and
XOFF are ignored.
Supports XON/XOFF or no handshaking.
Output: Used to output data only. All input characters are ignored.
Supports no handshaking.
Note: To enable the input and/or output, ‘serial in’ and/or ‘serial out’ must be enabled in the TESS menu.
Buffer
The value assigned to this parameter determines the size of the serial buffer used by the application for both input and output. The buffer controls the amount of data the application can send to or receive from a serial device.
Retries
This parameter determines the number of times the 7535 attempts to transmit a byte from the serial port. If the count specified in this parameter is exceeded, the transmission fails.
Input Tmo
This parameter sets the time in tenths of a second that the 7535 waits before passing received data to the TESS or ANSI tasks.
Output Tmo
The value assigned at this parameter determines the maximum number of milliseconds that the application will wait for a ‘write’ sent to the port to succeed before it is aborted. The ‘write’ may be one or several bytes in length.
Test
When this parameter is enabled (set to “Y”), data is output through the serial port to make certain that it is operating appropriately.
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Tether And Console Port Scan-See Parameters
6.18.3 Tether And Console Port Scan-See Parameters
When ‘Scan-See’ is specified as the peripheral for either the Tether or the Console port, the parameters listed under the “Scan-See” sub-menu are used to tailor the operation of this type of scanner. The other parameters listed in this menu –
“Character Set”, “Baud” and so on – are identical to those described beginning on page 191.
05 Scan See
Character Set »
Baud 9600
Data Bits
Parity
Stop Bits
Retries
Input Tmo
Scan-See
8 none
1
3
2
»
6.18.3.1 Scan-See Sub-Menu – Mapping The Viewport
05 Scan-See
Anchor Line
Anchor Column
Follow Cursor
Line Offset
Column Offset
Wraparound
Panning
Line Scrolling
Brightness
Arrows
Version
XON/XOFF
1
19
Y
0
0
N
Y
N
3
Bright
2
Y
Range
0...1
0...19
Y/N
-25...25
-80...80
Y/N
Y/N
Y/N
0 to 5
Bright Horz Vert
0...2
Y/N
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Scan-See Sub-Menu – Mapping The Viewport
The Scan-See display is mapped to a specific area on the 7535 screen – called the viewport – and is continuously updated to reflect that portion of the screen. The
Scan-See viewport is defined as follows:
Anchor Line/Anchor Column
A location on the Scan-See display – the anchor – is chosen as a reference point.
Line Offset/Column Offset
A predefined displacement – the offset – is added to the location of the 7535 cursor to create a point – the pivot . This pivot is mapped to the anchor , and whatever is displayed in its vicinity is also displayed on the Scan-See.
For example:
• the anchor is chosen as (9,0) whereas “9” is the column and “0” is the line
(on the Scan-See display)
• the offset is chosen as (4,2)
• the cursor on the 7535 is currently located at (7,5)
• the pivot would thus be located at (7+4, 5+2) or (11,7)
• and so the area displayed on the Scan-See will be:
(11–9,7–0) to (11–9+9,7–0+1) or (2,7) to (11,8).
1
1
These computations assume that “Wraparound” (described on page 198) is disabled
(set to “N”) and that “Follow Cursor” (described on page 198) is enabled (set to “Y”).
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Scan-See Sub-Menu – Mapping The Viewport anchor
(0,0)
0
1
0 1 2 3 4 5 6 7 8 9
(9,0)
Scan-See Display
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 . . .
6
7
4
5
8
2
3
0
1
9
10
11
(0,0) terminal cursor
(7,5) offset
+4
+2
(11, 7) pivot = terminal cursor
+ offset offset
(4
,2)
Terminal Display
+4
+2
superimposing the anchor on the pivot
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 . . .
9
10
11
7
8
5
6
0
3
4
1
2
(0,0)
(2,7 ) anchor
Scan-See Viewport
(11, 7)
(11, 8) pivot
Note: To enter negative values, press the “-” (minus) key and then, type the number you want to use.
The <LEFT> arrow key can also be used to decrement the value assigned to the parameter. Each time the <LEFT> arrow is pressed, the number is decremented by one. For example, to enter a value of “–5”, start from zero and press the left arrow key five times.
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