Waveform Group - YOKOGAWA DLM4038 User Manual

5.35 WAVeform Group

The commands in this group deal with the retrieved waveform data. There are no front panel keys that correspond to
the commands in this group.
:WAVeform?
Function Queries all information about waveform data.
:WAVeform?
Syntax
:WAVeform:ALL?
Function Queries all settings related to the
:WAVeform:ALL:SEND? query.
:WAVeform:ALL?
Syntax
5-310
:WAVeform:ALL:SEND?
Function Queries the waveform data specified by the
:WAVeform:ALL:TRACe command.
:WAVeform:ALL:SEND? {<NRf>}
Syntax
<NRf> = 0 to the acquisition count
:WAVEFORM:ALL:SEND? 0
Example
-> #800007558
03 00 85 00 00 00 00 00 00 00 00 00
00 00 E2 04
00 00 00 00 00 00 E2 04 00 00 62 00
AC 11 44 00
6C 00 26 00 08 00 3C 18 3E 18 4E 18
0A 18 18 18 ...
Description • You can query waveform data during
measurement.
• You cannot query waveform data when the
trigger mode is set to Single or NSingle.
• You cannot query waveform data when the
display is in roll mode.
• You cannot query waveform data when
continuous statistical processing of
automatically measured waveform parameters
or user-defined computation is enabled.
• The data format is shown below.
#8 (eight digits for the number of transmission
data bytes in decimal format) <- Block data
header
(two bytes for the number of traces) (eight
bytes for the acquisition count) <- Common
information
(four bytes for the trace number) (eight bytes for
the reserved area) (four bytes for the number of
data points) <- Trace information entry 1
(data sequence)
(four bytes for the trace number) (eight bytes for
the reserved area) (four bytes for the number of
data points) <- Trace information entry 2
(data sequence)
(repeated for all the traces)
• The common information and trace information
is written in little-endian byte order.
• The format of the data in the data sections is
WORD. It is written in little-endian byte order.
• You can query up to 12.5 kPoints in a record.
• You can acquire the latest waveform data by
setting <NRF> (the acquisition count) to 0.
• To acquire waveform data that is different
from the previously acquired waveform data,
set <NRF> to the acquisition count from the
common information (explained above) that you
previously acquired by using this query.
If the specified acquisition count and the
DLM4000's acquisition count are the same
at the point in time that the query is received,
#800000000 is returned.
IM DLM4038-17EN