Keysight E4356A, Operating Manual

Page: 52 / 134

Remote Programming 51
SCPI Data Formats
All data programmed to or returned from the power supply is ASCII. The data may be
numerical
or
character string.
Numerical Data
Table 6-1 and Table 6-2 summarize the numerical formats
.
Table 6-1. Numerical Data Formats
Symbol Data Form
Talking Formats
<NR1> Digits with an implied decimal point assumed at the right of the least-significant
digit. Examples:
273 0273
<NR2> Digits with an explicit decimal point. Example:
273. .0273
<NR3> Digits with an explicit decimal point and an exponent. Example:
2.73E+2 273.0E-2
Listening Formats
<NRf>
Extended format that includes
<NR1>, <NR2>
and
<NR3>.
Examples:
273 273.
2.73E2
<NRf+> Expanded decimal format that includes
<NRf>, MIN
and
MAX
. Examples:
273
273. 2.73E2 MAX. MIN
and
MAX
are the minimum and maximum limit values
that are implicit in the range specification for the parameter.
Table 6-2. Suffixes and Multipliers
Class Suffix Unit Unit with Multiplier
Current A Ampere MA (milliampere)
Amplitude V Volt MV (millivolt)
Time S second MS (millisecond)
Common Multipliers
lE3 K kilo
1E-3 M milli
1E-6 U micro
Boolean Data
Either form
{1|0
} or
{ON|OFF}
may be sent with commands. Queries always return 1 or 0.
OUTPut OFF
CURRent:PROTection 1
Character Data
For query statements, character strings may be returned in either of the forms shown in Table 6-3, depending on the length
of the returned string.
Table 6-3. Character Data Formats
<CRD>
Character Response Data. Permits the return of character strings.
<AARD>
Arbitrary ASCII Response Data. Permits the return of undelimited 7-bit ASCII. This data type has
an implied message terminator.
Note:
The IEEE 488.2 format for a string parameter requires that the string be enclosed within either single
(' ') or double (" ") quotes. Be certain that your program statements comply with this requirement.