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DATA
Logic Analyzer
Block Data
Section Header
Description
1
11
12
13
Section Data
Data Preamble
Description
System Commands
68
The logic analyzer block data is described in the following sections. The
oscilloscope block data is appended at the end of the logic analyzer block
data when the oscilloscope is on and has acquired and stored waveform
data. The oscilloscope block data is described in "Oscilloscope Block
Data" later in this section.
The section header uses bytes 1 through 16 (this manual begins counting
at 1; there is no byte 0). The 16 bytes of the section header are as follows:
10 bytes
section name, such
1 byte - reserved
1 bytes - module ID (31 for HP 1652B/53B)
4 bytes - length (14506 for the logic analyzer only and 26794 for both the
logic analyzer and oscilloscope).
For the SYSTem:DATA command, the < section data > parameter
consists of two parts: the data preamble and the acquisition data. These
are described in the following two sections.
The block data is organized as 160 bytes of preamble information,
followed by 1024 14byte groups of information, followed by 10 reserved
bytes. The preamble gives information for each analyzer describing the
amount and type of data captured, where the trace point occurred in the
data, which pods are assigned to which analyzer, and other information.
Each 1Cbyte group is made up of two bytes (16 bits) of status for
Analyzer 1, two bytes of status for Analyzer 2, then five sets of two bytes of
information for each of the five 16-bit pods of the HP 1652B. In the
HP 1653B, the status and format for the sets of bytes are the same, but the
data in not valid on pods 3,4, and 5.
as "DATA
Programming Reference
HP 16528/1663B
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