:FREQuency:MARKer
is a numeric list structured in the same way
as start and stop lists. The
:FREQ:MARK:STATe
command can
be used with ON and
OFF
entries to correspond with the markers
you require to be present or one entry ON or OFF that applies to
all markers.
:FREQuency:SPACing
is a list similar to the marker list but
containing the entries LO G(arithmetic) or LIN(ear
)
as required. As
with the other lists, the number of entries must be the same and in
the same order or one common value.
:LIST:DWELI
This command list specifies the dwell time occurances for
the frequency lists. The Dwell time is the sweep time for the
corresponding interval.
:LIST:SEQuence
This command takes the form of an extended numeric list separated
by commas, containing numbers and/or ranges as shown in the
example
Example
5,
2,
3,
4,
5,
12 or
5,
(2:5),
12
(equivalent)
These numbers define a sequence for stepping through a list.
Individual points may be specified as many times as desired
in
a
single sequence. The points specified by the command, are indexes
into the lists. For example, if 3 was selected, the third point in
the frequency, dwell, lists would be
sequenced.The sequence list is
separate and un associated with the other lists described above.
The command has two query functions associated with it:
w
:SEQuenee:POINts?
This query returns the number of steps that
would be sequenced at run time, not the number of entries in the
sequence. Example:
(1:5)
b
5
w
:SEQuence:LENGth?
This query returns the number of entries in
the internal sweep sequence array.
A
number takes up one entry
but a range takes up three entries. For example
1
(one entry),
2
(one entry), 3:10 (three entries) would return a length of
5.
Although this value is of minor interest, it can be used to
interrogate how much of the available sequence storage space (300
entries) has been used.
Command
Reference
5-21
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