User Manual 3162A/B
Using The Instrument 3-30
byte-high, byte-low order. The FORM:SWAP command can be used to reverse
this order.
When sending binary blocks to the Model 3162B, the final byte must be
transmitted with the EOI bit set. Carriage Return and Line Feed will not be
detected as terminators. This permits the values ODH and OAH to be used as
data points.
The IEEE-STD-488.2 definition of Definite Length Arbitrary Block Data Format
is demonstrated in Figure 3-8.
Figure 3-8, Definite Length Arbitrary Block Data Format
16-bits of data are sent to the Model 3162B even though only 12 bits are
required to generate the waveform. The order of bytes and bits and their values
are shown in Figure 3-9.
Figure 3-9, 12-Bit Waveform Data Format
Note
The Model 3162B operates in interlaced mode where eight
memory cells generate one byte of data. Segment size can
be programmed in numbers evenly divisible by eight only.
For example, 2096 bytes is an acceptable length for a
“#”
Non-zero
ASCII digit
high byte
(binary)
low byte
(binary)
ASCII digit
Start of
Data Block
Number of Digits
to Follow
Byte Count:
2x Number of Points
2 Bytes Per
Data Point
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