3-5
IM AQ7277-17EN
Before Programming
1
2
3
4
5
App
Index
Upper-level Query
An upper-level query is a compound header to which aquestion mark is appended.
Execution of an upper-level query allows all a group’s settings to be output atonce.
Some query groups comprising more than threehierarchical levels can output all their
lower level settings.
Example
:ANALysis:THReshold?<PMT>
->:ANAL:THR:EOF 3.0;FERL 40.0;FESL 1.00;RLOS 70.0
;SLOS 0.03
Note
• In reply to a query, a response can be returned as a program message to this instrument.
Transmitting a response can restore the settings made when the query was executed.
• Not all a group’s information will necessarily be sent out as a response.
Some upper-
levelqueries will not return setup data which is not currently in use.
Header Interpretation Rules
This instrument interprets the header receivedaccording to the following rules.
• Mnemonics are not case sensitive.
Example
"
DRANge
" can also be written as"
drange
" or "
Drange
."
• The lowercase part of a header can be omitted.
Example
"
DRANge
" can also be written as"
DRANG
" or "
DRAN
."
• If the header ends with a question mark, the command is a query. It is not possible to
omit the question mark.
Example
"
DRANge?
" cannot be abbreviated to anything shorter than "
DRAN?
."
• If the "x" at the end of a mnemonic is omitted, it is assumed to be "1."
ExampleIf "
M<x>
" is written as "
M
,"this represents "
M1
."
Note
A mnemonic is a character string made up of alphanumeric characters.)
3.2 Commands
