Racal Instruments 3152A, Руководство пользователя

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3152A User Manual
Racal Instruments
©
2001 Using The Instrument 3-41
A sequence is made of steps. A step can stand on its own or
link to another step. It is possible to have only one step in a
sequence but the output will look like a continuous waveform.
If only one step is specified and the Model 3152A is placed in
Triggered mode, the output will behave as it would in Burst
mode where the repeat number replaces the burst count
parameter.
Aside from step numbers, each step has two other parameters:
segment number and repeat counter. The segment number
specifies which segment will be linked, and the repeat counter
specifies how many times the segment will repeat. Use the
following command to generate a sequence:
SEQuence:DEFine {<step_number>,
<segment_number>,<repeat>}
Use this command up to 4095 times, each time for a different
step and for a different segment number and repeat
combination. Note that the same segment number can be used
for different sequence steps. The SEQ:DEF command does
not change the FUNC:MODE setting. Unless the
FUNC:MODE SEQ command is used, the SEQ:DEF command
will have no immediate effect on the output waveform or
function.
NOTE
The SEQ:DATA command be used in place of a
series of SEQ:DEF commands if higher
throughput is needed (see the next section).
The sequence generator goes through the steps in descending
order. In the continuous operating mode, the sequence is
repeated automatically after the last step has been completed.
When the generator is set to operate in Triggered mode, the
output stops at the last point of the last waveform in the
sequence. In Gated mode, the sequence is always completed
after the gate stop signal.
If removal of a step from the sequence is required, use the
following command:
SEQuence:DELete <n>
where <n> is the step number to be removed from the
sequence.
To delete all sequences, use the following command:
SEQuence:DELete:ALL