Readout; Text - Tektronix 7D20 Operator's Manual

Readout
When a readout query is received, the 7D20 responds by sending the information
on the top two and bottom two lines of text displayed on the crt . Readout text can
be
transmitted to the 7D20, but it will be ingored . Syntax for the readout query is :
and the response is :
Text
RDOUT?
RDOUT "dine 1><CR>dine 2><CR>dine 15><CR>dine 18><CR>"]
The text is the information that is displayed on the center 12 lines of the crt display .
Each line contains no more than 36 characters . Text can be sent or received by the
7D20 . The characters that the 7D20 can display are listed in Figure 4-13, from
character 32 (SP) through 95 (-), which form the center four columns of characters
in the figure . If Tower case letters (97 through 122) are received, they are converted
to uppercase, then displayed . In addition, the characters in Table 4-3 can be sent or
received :
TABLE 4-3
Supplemental Characters
Character
~ ASCII Character
~ Decimal
Horizontal Tab
HT 9
Carriage Return
CR
13
(Up arrow) ~
94
(Down arrow)
ESC a 27 97
(Delta) 4
ESC d 27 100
(Mini) m
ESC m
27 109
(Micro) p
ESC u
27 117
(Nano) n
ESC n
27 110
(Pico) p
ESC p
27 112
(Right arrow)
ESC r
27 114
GPIB-7D20
Note that the HT character is equivalent to sending five spaces in the text string .
When using the text feature, the user is cautioned that some limitations should be
kept in mind :
1 . The character set is formed with a 5
x
7 standard dot matrix, and is imposed on
a field of 1536 points . One can calculate the precise number of characters that
can be displayed by summing the dots used in the characters until all 1536
points (dots) are used . More practically, the number of characters possible is
approximately 100 . Spaces or blanks do not count in the calculation of total
characters .
2 . A TEXT command will terminate a DEBi1G display, or any MENU, TEST, or ID
command and will also replace the text that is currently on the display .