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User Manual LW120
D7
D6
As an example, Figure 4-4 shows word value of decimal 8025 (0x1F59) in a correct format for downloading
to the LW120. The byte containing 59 is sent first and then the byte containing 1F.
0
1
TRACe:DEFine<segment_number>,<length>
Purpose
This command will define waveform segments and their relative length. Note that if you are using the
TRAC:DATA# header to download waveform data, there is no need for this command because the header
contains segment size information and therefore, the segment will resize automatically. The use of this
command is absolutely a must if you download waveform data through the DMA port.
•
<segment_number> will set the selected segment
•
<length> will assign length to the above selected segment. Minimum segment length is 16 points, the
maximum is limited by the memory option that is installed in your instrument either 1Meg or 4Meg.
The LW120 operates in interlaced mode where four memory cells generate one
byte of data. Therefore, segment size can be programmed in numbers evenly
divisible by four only. For example, 2096 bytes is an acceptable length for a binary
block. 2002 is not a multiple of 4, therefore the generator will generate an error
message if this segment length is used.
TRACe:DELete<segment_number>
low-byte
D5
D4
D3
D2
D1
2 control bits. Must be set to 0, initially
Figure 4-3
. 16-bit Waveform Data Point Representation
low-byte
0
1
1
0
0
5
9
Figure 4-4
. 0x1F59 Data Point Representation
high-byte
D0
D15
D14
D13
D12
high-byte
1
0
0
0
1
1
Control Bits = 0
NOTE
Remote Programming Reference 4-47
D11
D10
D9
D8
1
1
1
1
F
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