Specifications

User Manual 301/302

Configuring The Instrument

Download method. The later is a bit more complex because it requires

writing external applications however, once understood, it could

download long tables in a split of a second. The fast binary download

format is explained later in this chapter.

For downloading standard ASCII sequence tables, use the following

command:

SSEQuence:DEFine

{<step_number>,<segment_number>,<repeat>[,<0/1>]}

Use this command up to 4096 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

SSEQ:DEF command does not change the FUNC:MODE setting.

Unless the FUNC:MODE SEQ command is used, the SSEQ:DEF

command has no immediate effect on the output waveform or

function.

TIP

Every time that the SSEQ:DEF command is sent to the generator, it

attempts to rebuild the sequence table and re-generate the

sequence at the output. This process takes a long time and slows

the download process. Therefore, it is recommended that you use

the SSEQ:DEF command in either Fixed or User modes but not

while you are in sequenced mode.

The sequence generator goes through its steps in descending order.

In continuous mode, the sequence is repeated automatically after

completing the last step. 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.

In case you want to remove a step from the sequence table, use the

following command:

SSEQuence:DELete <n>

Where <n> is the step number to be removed from the sequence. To

wipe out the sequence table use the following command:

SSEQuence:DELete:ALL

CAUTION

SSEQ:DEL:ALL is destructive. Use this command with caution

because it will completely and irreversibly erase the sequence table