Query Commands - Agilent Technologies 3458A Repair Manual

Query Commands

Standard Queries
Additional Queries
24 Chapter 2 Operating Information
arrow key or the comma key (or, if the first parameter is numeric, a numeric
key). This selects the command and allows you to specify or select
parameter(s) using the procedures described earlier in this section.
There are two alphabetic menus available: FULL and SHORT. You can
select between these menus using the shifted Menu key. The specified menu
choice is stored in continuous memory (not lost when power is removed).
The FULL menu contains all commands except query commands that can
be constructed by appending a question mark to a command (e.g., BEEP,
BEEP?). (Query commands are discussed next.) The SHORT menu
eliminates the GPIB bus-related commands, commands that are seldom used
from the front panel, and any commands that have dedicated front panel keys
(e.g., the NPLC key or the Trig key).
There are a number of commands in the alphabetic command directory that
end with a question mark. These commands are called query commands since
each returns a response to a particular question. For example, access the
LINE? query command from the command menu and press the Enter key.
The multimeter responds to this query command by measuring and
displaying the power line frequency. (Use the right arrow key to view the
entire response.) As another example, access the TEMP? command from the
command menu and press Enter. This command returns the multimeter's
internal temperature in degrees Centigrade.
The FULL command menu contains the following standard query
commands:
AUXERR?
CAL?
CALNUM?
ERR?
ERRSTR?
ID?
ISCALE?
LINE?
In addition to the queries listed above, you can create others by appending a
question mark to any command that can be used to program the multimeter.
For example, the AZERO command (Auto Zero configuration key) enables
or disables the autozero function. You can determine the present autozero
mode by appending a question mark to the AZERO command. To do this,
Press:
Auto
Zero
The multimeter responds by displaying the present autozero mode (power-on
mode = ON). (Notice that this command is immediately executed; you do
not have to press the Enter key.)
Note
The QFORMAT command can be used to specify whether query responses
MCOUNT?
MSIZE?
OPT?
REV?
SSPARM?
STB?
TEMP?
?
Store
State