MDO3000 Programmer Manual.pdf - 第993页

Commands Listed in Alphabetical Order WFMOutpre :BY T_Or This command specifies which byte of outgoing binary waveform data is transmitted first (the byte order). The byte order can either be MSB (most significant b yte firs…

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Commands Listed in Alphabetical Order
Examples
WFMOUTPRE:BN_
FMT RP
specifies that outgoing waveform data will be in positive
integer format.
WFMOUTPRE:BN
_FMT?
might return :WFMOUTPRE :BN_FMT RI indicating that
the outgoing waveform data is currently in signed integer format.
WFMOutpre:BYT_Nr
This command specifies the data width for the outgoing waveform specified by the
DATa:SOUrce command. (This command is synonymous with
:DATa:WIDTH.)
Note that changing WFMOutpre:BYT_Nr also changes WFMOutpre:BIT_Nr
and DATa:
WIDth.
(See page 2-95, Waveform Transfer Command Group.)
(See page D-1, Waveform Transfer (WFMOutpre and CURVe Query) Examples.)
NOTE. The
WFMOutpre:BYT _Nr
and
WFMOutpre:BIT _Nr
settings are
direct
ly related; setting one causes the other to be set accordingly. For
example,
WFMOutpre:BY T_Nr 2
causes
WFMOutpre_B IT_Nr
to be set to
16 (2 * 8 bits/byte). Similarly, setting
WFMOutpre: BIT_Nr
to 16 causes
WFMOutpre: BYT_Nr
to be set to 2.
Group
Waveform Transfer
Syntax
WFMOutpre:BYT_Nr <NR1>
WFMOutpre:BYT_Nr?
Related Commands
DATa:SOUrce,
DATa:WIDth,
WFMOutpre:BIT_Nr
Arguments
<NR1> is the number of bytes per data point. The number of bytes can be 1 or 2
for Analog, Math or the digital channels D0 – D15. It can be 4 or 8 for DIGital
collection data. It must be 4 for frequency domain trace data.
Examples
WFMOUTPRE:BYT_NR 1 sets the number of bytes per outgoing waveform data
point to 1, which is the default setting.
WFMOUTPRE:BYT_NR? might return :WFMOUTPRE:BYT_NR 2 indicating that
there are 2 bytes per outgoing waveform data point.
2-962 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual
Commands Listed in Alphabetical Order
WFMOutpre:BY
T_Or
This command specifies which byte of outgoing binary waveform data is
transmitted first (the byte order). The byte order can either be MSB (most
significant b
yte first) or LSB (least significant byte first, also known as IBM
format). This specification only has meaning when WFMOutpre:ENCdg is set
to BINary and WFMOutpre:BYT_Nr is 2. Changing WFMOutpre:BYT_Or also
changes DATa:ENCdg (if DATa:ENCdg is not ASCIi).
(See page 2-95, Waveform Transfer Command Group.)
(See page D-1, Wa veform Transfer (WFMOutpre and CURVe Query) Examples.)
Group
Waveform Transfer
Syntax
WFMO
utpre:BYT_Or {LSB|MSB}
WFMOutpre:BYT_Or?
Related Commands
WFMOutpre:ENCdg,
WFMOutpre:BYT_Nr
Arguments
LSB specifies that the least significant byte will be transmitted first.
MSB specifies that the most significant byte will be transmitted first.
Examples
WFMOUTPRE:BYT_OR MSB sets the most significant outgoing byte of waveform
data to be transmitted first.
WFMOUTPRE:BYT_OR? might return :WFMOUTPRE:BYT_OR LSB indicating that
the least significant data byte will be transmitted first.
WFMOutpre:CENTERFREQuency? (Query Only)
This query returns the center frequency of the incoming waveform. For non-MDO
models, this query always returns 0.
The center frequency is a precise frequency at the center of the display of the
frequency domain graticule. In many applications, it is a carrier frequency.
Conditions
MDO3000, MDO4000/B, or MDO4000C models with option SA3 or SA6 only.
Group
Waveform Transfer
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-963
Commands Listed in Alphabetical Order
Syntax
WFMOutpre:CEN
TERFREQuency?
Examples
WFMOutpre:CENTERFREQuency? might return 1.0E+9, indicating a center
frequency of 1 GHz.
WFMOutpre:DOMain? (Query Only)
This query returns the domain of the outgoing waveform — either TIMe or
FREQuency. If the domain is TIMe, it indicates that the data is to be treated as
integer information. If the domain is FREQuency, it indicates that the dataistobe
treated as floating point information.
Conditions
MDO3000, MDO4000/B, or MDO4000C models with option SA3 or SA6 only.
Group
Waveform Transfer
Syntax
WFMOutpre:DOMain?
Examples
WFMOutpre:DOMain might return FREQuency, indicating that the outgoing
waveform is one of the four RF frequency domain traces (RF_NORMal,
RF_AVErage, RF_MINHOLD, RF_MAXHOLD).
WFMOutpre:ENCdg
This command specifies the type of encoding (BINary or ASCii) of the outgoing
waveform data queried using the
CURVe? query. (This can also be set using the
DATa:ENCdg command, which provides the ability to set
WFMOutpre:ENCdg,
WFMOutpre:BN_Fmt,
and WFMOutpre:BYT_ Or using a single command.)
(See page 2-95, Waveform Transfer Command Group.)
(See page D-1, Waveform Transfer (WFMOutpre and CURVe Query) Examples.)
Group
Waveform Transfer
Syntax
WFMOutpre:ENCdg {ASCii|BINary}
WFMOutpre:ENCdg?
Related Commands
DATa:ENCdg,
WFMOutpre:BYT_Nr,
2-964 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual