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User Manual 3153
Using The Instrument 3-39
expected.
Use the commands below to download waveform data using the 16-bit
shared memory download mode:
Change the download mode to 16-bit using the following command:
FORMat:WAVE {NORMal | USER}
NORM is the default setting. USER places the Model 3153 in 16-bit
memory download mode.
WARNING
Changing modes from NORM to USER and vice-versa is
destructive to the waveform memory. This command has
an affect on the segment table and SYNC and break point
bits location. Other parameters, such as amplitude, offset
and sample clock frequency are not affected by this
command.
The query:
FORMat:WAVE?
queries the waveform download mode and returns NORM or USER.
The following command:
SMEMory:TYPE {WAVE | SEGment | SEQuence]
sets the DMA port to receive either waveform data, segment table data
or sequence table data. Segment and sequence table data will be
discussed later in this chapter.
The query:
SMEMory:TYPE?
queries the shared memory type and returns WAVE, SEG or SEQ.
The command:
SMEMory: {OFF | ON}
toggles the shared memory state. OFF is the default position. After this
command, the instrument cannot accept normal commands. Data must
be sent to the generator using shared memory access. Normal
command mode is resumed when the SMEMory:STATe is changed to
OFF.
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