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Command
Separator
A colon (:) always separates one command from the next lower level
command as shown below:
ROUTe:SCAN:MODE?
Colons separate the root command from the second-level command
(ROUTe:SCAN) and the second level from the third-level (SCAN:MODE?).
Abbreviated
Commands
The command syntax shows most commands as a mixture of upper- and
lower-case letters. The upper case letters indicate the abbreviated spelling
for the command. For shorter program lines, send the abbreviated form. For
better program readability, you may send the entire command. The
instrument will accept either the abbreviated form or the entire command.
For example, if the command syntax shows MEASure, then MEAS and
MEASURE are both acceptable forms. Other forms of MEASure, such as
MEASU or MEASUR, will generate an error. You may use upper- or
lower-case letters. Therefore, MEASURE, measure, and MeAsUrE are all
acceptable.
Implied Commands Implied commands are those which appear in square brackets ([ ]) in the
command syntax. (Note that the brackets are not part of the command and
are not sent to the instrument.) Suppose you send a second-level command
but do not send the preceding implied command. In this case, the instrument
assumes you intend to use the implied command and it responds as if you
had sent it.
Examine the SOURce subsystem shown below:
[SOURce:]
PULSe
:COUNt
:COUNt?
:PERiod
:PERiod?
The root command SOURce: is an implied command. To set the
instrument’s pulse count to 25, you can send either of the following
command statements:
SOUR:PULS:COUN 25
or PULS:COUN 25
42 Agilent E1364A Form C Switch Command Reference Chapter 5