Keithley 708B Reference Manual page 332

Models 707B and 708B Switching Matrix Reference Manual
Details
This function creates an editable input field at the present cursor position, and an input prompt message on the
bottom line. Example of a displayed input field and prompt:
0.00V
Input 0 to +2V
format uses 0s, the decimal point, polarity sign and exponents to define how the input field is formatted.
format can include the options shown in the following table.
format
options
Option
E
+
0
.
minimum and maximum can be used to limit the values that can be entered. When + is selected for format, the
minimum limit must be more than or equal to zero. When limits are used, the operator cannot enter values above
or below these limits.
After the instrument is turned on, the first time you use a display command to write to the display, the message
"USER SCREEN" is cleared. After the first write, you need to use display.clear to clear the message.
The input value is limited to ±1e37.
After sending this command, script execution pauses for the operator to enter a value and press ENTER.
For positive and negative entry ("+" sign used for the value field and/or the exponent field), polarity of a non-zero
value or exponent can be toggled by positioning the cursor on the polarity sign and turning the navigation wheel.
Polarity will also toggle when using the navigation wheel to decrease or increase the value or exponent past
zero. A zero value or exponent (for example, +00) is always positive and cannot be toggled to negative polarity.
After you send this command and press the EXIT (LOCAL) key, the value returns nil.
Example
value = display.prompt("0.00", "V", "Input 0 to +2V", 0.5, 0, 2)
print(value)
The above command prompts the operator to enter a voltage value. The valid input range is 0 to +2.00, with a
default of 0.50:
0.50V
Input 0 to +2V
If the operator enters 0.70, the output is:
7.000000000e-01
Also see
display.inputvalue()
707B-901-01 Rev. A / August 2010
Description
Include the E to display the value exponentially. Include a "+"
sign for positive/negative exponent entry. Do not include the "+"
sign to prevent negative value entry. 0 defines the digit positions
for the exponent.
Allows operators to enter positive or negative values. If the "+"
sign is not included, the operator cannot enter a negative value.
Defines the digit positions for the value. You can use up to six 0s.
The decimal point where needed for the value.
(on page 7-73)
Section 7: Command reference
Examples
0.00000E+0
+0.00
+00.0000E+00
+0.00
7-79