Appendix D: Waveform Transfer (WFMOutpre and CURVe Query) Examples
Command Comment
:WFMOutpre?
Returns the following values. Each value represents the current settings that
a
CURVe? query will use to format the data that will be transferred from the
oscilloscope
to a PC or other device (see next table for explanations):
:WFMOUTPRE:BYT_NR 8;BIT_N R 64;E NCDG ASCII;BN_FM T
RI;BYT_OR MSB;WFID "Digital, unkno wn coupling,
100.0us/div
, 10000 points, Digital mode" ;NR_PT 25;PT_FMT
Y;PT_ORDER LINEAR;XUNIT "s";XINCR 100.0000E-9;XZERO
-500.0000E-6;PT_OFF 0;YUN IT "St ate";YMULT 1.000 0;YOFF
0.0E+0;YZE
RO 0.0E+0
:CURVe?
Returns the
following values. Each value represents a data point:
:CURVe
80000FB386,E0000FB386,80000FB 3E6,80000FB 3E6,80000FB3E6,
C8000FB3A
6,8C000FB3A6, 8C000FB3A6, 84000FB3AE, CC000FB3A6,
8C000FB3E6,8C000FB3E6,84000FB 3E6,80000FB 3E6,80000FB3E6,
80000FB3E6,80000FB3E6,A0000FB 3C6,80000FB 3C6,80000FB3C6,
80000FB3
C6,88000FB3C6,8C000FB3C6, 8C000FB3C6,84000F B3CE
NOTE. The returned hexadecimal data values for the Digital Collection a re
formatted without leading zeroes.
NOTE. You can also use the
WAVFrm?
query, which concatenates the
WFMOutpre?
and
CURVe?
queries.
WFMOutpre? Q uery results
Explanation
WFMOUTPRE:BYT_NR 8
This value specifies the number of bytes per data point in the waveform data. To change
this value automatically, use the WFMOutpre:BYT_Nr command. Note that changing this
value automatically changes the
BIT_NR value accordingly. (This value can also be set
using the DATa:WIDth command.)
BIT_NR 64
This value specifies the number of bits per data point in the waveform data. To change this
value, use the WFMOutpre:BIT_Nr command. Note that changing this value automatically
changes the
BYT_NR value accordingly.
ENCDG ASCII
This value s peci fies the encoding of the waveform data. To change this value (the
other possibility is BINARY), use the WFMOutpre:ENCdg command. (This value can
also be set using the DATa:ENCdg command, which provides the ability to set the
WFMOutpre:ENCdg, WFMOut pre:BN_Fmt,: and WFMOut pre:BYT_Or values
using a single command.)
BN_FMT RI
This value specifies the binary format, which in this case is RI (signed integer). To change
this value (the other possibility is RP or positive integer), use the WFMOutpre:BN_Fmt
command. Note: this field is not applicable for AS Cii encoding.
BYT_OR MSB
This value specifies the byte order for the BINARY encoding, which in this c ase is MSB
(most significant byte first, also known as IBM format). To change this value to LSB, use the
WFMOutpre:BYT_Or command. Note: this field is not applicable for ASCii encoding.
D-8 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual
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