Section 9: Introduction to TSP operation
Series 3700A System Switch/Multimeter Reference Manual
9-14
3700AS-901-01 Rev. D/June 2018
Sending the command without the
row
parameter returns both lines of the display. The
$N
character
code will be included to show where the top line ends and the bottom line begins. The
$N
character
code will be returned even if
embellished
is set to
false
.
With
embellished
set to
true
, all other character codes that were used in the creation of each
message line will be returned along with the message. With
embellished
set to
false
, only the
message will be returned.
Sending the command without the
columnStart
parameter defaults to column 1. Sending the
command without the
columnEnd
argument defaults to the last column (column 20 for row 1, column
32 for row 2).
Input prompting
You can use display messaging with front panel controls to make a user script interactive. In an
interactive script, input prompts are displayed so that the operator can perform a prescribed action
using the front panel controls. While displaying an input prompt, the test will pause and wait for the
operator to perform the prescribed action.
Menu
You can present a user-defined menu on the display. The menu consists of the menu name on the
top line and a selectable list of menu items on the bottom line. To define a menu, use the
display.menu(
menu
,
items
)
function, where:
menu
The name of the menu; use a string of up to 20 characters (including spaces)
items
A string is made up of one or more menu items; each item must be separated by white space
When the
display.menu()
function is sent, script execution waits for the operator to select one of
the menu items. Rotate the navigation wheel to place the blinking cursor on a menu item. Items that
do not fit in the display area are displayed by rotating the navigation wheel to the right. With the
cursor on the menu item, press the navigation wheel (or the
ENTER
key) to select it.
Pressing the EXIT (LOCAL) key does not abort the script while the menu is displayed, but it will return
nil
. The script can be aborted by calling the
exit()
function when
nil
is returned.
The following programming example illustrates how to present the operator with the choice of two
menu items: Test1 or Test2. If Test1 is selected, the message
Running Test1
is displayed. If Test2
is selected, the message
Running Test2
is displayed.
display.clear()
menu = display.menu("Sample Menu", "Test1 Test2")
if menu == "Test1" then
display.settext("Running Test1")
else
display.settext("Running Test2")
end
Parameter value prompting
There are two functions that you can use to create an editable input field on the user screen at the
present cursor position:
display.inputvalue()
and
display.prompt()
.
The
display.inputvalue()
function uses the user screen at the present cursor position. Once
the command is finished, it returns the user screen to its previous state. The
display.prompt()
function creates a new edit screen and does not use the user screen.
