GPIB
370B User Manual
4-39
Table 4-10: Display Data and CRT Readout I/O (Cont.)
Command DefinitionLinkArgument
WFMpre? When WFMpre? is received, 370B reports waveform preamble data:
WFMPRE
WFID:<Wfid>,ENCDG:BIN,
NR.PT
:<point>,
PT.FMT:XY, XMULT:<x multi> ,XZERO:0,
XOFF:<x off>,XUNIT:V, YMULT:<y multi>,YZERO:0,
YOFF:(y off>,YUNIT:A,BYT/NR:2, BN.FMT:RP.BIT/
NR:10,CRVCHK:CHKSM 0, LN .FMT:<format>
<wfid>
::=
"INDEX
<num>/VERT<amp>/
HORIZ
<volt>/
STEP<step>/OFFSET<of
fset>/BGM<para>/
AUX<aux>/ACQ<acq>/VCS<percent>/TEXT<txt>"
<num> ::= Memory location number (0 - 70, 0 for CRT)
<amp> ::= Vertical amp/div
<volt> ::= Horizontal volts/div
<step> ::= Step amplitude
<offset> ::= Step offset
<para> ::= Beta or gm
<aux> ::= Aux Supply
<acq> ::= Curve acquisition mode (AVG|NOR|ENV)
<percent> ::= Variable Collector Supply setting, %
<txt> ::= Text area readout
<point> ::= curve point no. (1 - 1024)
<x multi> ::= <NR3>= horizontal scale factor
<x off> ::= <NR1> = horizontal scale offset
<y multi> ::= <NR3> = vertical scale factor
<y off> ::= <NR1> = vertical scale offset
<format> ::= VECTOR|DOT|SWEEP <num>
<num> ::= number of steps + 1
WFMpre? NR.PT Reports NR.PT waveform preamble data.
<point> ::= 1|2|...|1024
CURve <string> Loads curve data.
CURVE CURVID: <crvid>, %<binary data>
<crvid> ::= INDEX <NR1>"
<binary data> ::= <binary count> <binary point> ... <checksum>
CURve? Reports curve data.
CURVE CURVID: <crvid>, %<binary count> <binary point>...
<checksum>
<crvid> ::= INDEX <NR1>"
<binary count>::=two bytes representing number of data points + 1
<binary point> ::= 2's complement of the modulo 256 sum of the
preceding binary data bytes and binary count,
except %" preceding the binary data count.
WAVfrm? Reports waveform preamble and curve data. Response is the same as is
returned for WFMpre?; CURVE?
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