8845A/8846A
Programmers Manual
66
Discrete Parameters
Discrete parameters are used to program settings that have a limited number of values
(like BUS, IMMediate, EXTernal). They have a short form and a long form just like
command keywords. You can mix upper- and lower-case letters. Query responses will
always return the short form in all upper-case letters. The following command uses
discrete parameters:
TRIGger:SOURce {BUS|IMMediate|EXTernal}
Boolean Parameters
Boolean parameters represent a single binary condition that is either true or false. For a
false condition, the Meter will accept OFF or 0. For a true condition, the Meter will
accept ON or 1. When you query a boolean setting, the instrument will always return “0”
or “1”. The following command uses a boolean parameter:
INPut:IMPedance:AUTO {OFF|ON}
String Parameters
String parameters can contain virtually any set of ASCII characters. A string must begin
and end with matching quotes; either with a single quote or with a double quote. You can
include the quote delimiter as part of the string by typing it twice without any characters
in between. The following command uses a string parameter:
DISPlay:TEXT <quoted string>
Alternate Programming Language Compatibility
The Meter can be configured to accept and execute 884XA SCPI commands (HP 34401A
compatible) or Fluke 45 multimeter commands. Remote operation will only allow you to
access the functionality of the multimeter language selected. Full Meter capability is
available through the 884XA SCPI programming language. For more information on
selecting the alternate languages from the front panel menu, see Selecting the
Programming Language earlier in this manual. From the remote interface, use the
following commands to select the alternate languages:
L1 selects SCPI language
L2 selects Fluke 45A language
The Meter implements virtually all of the commands available for the Fluke 45 and HP
34401A, with the exception of the self-test and calibration commands. You must always
calibrate the Meter using the SCPI language setting. The calibration commands from the
other multimeters will not be executed.
Be aware that measurement timing may be different in the alternate language
compatibility modes.