Racal Instruments 3152A, Руководство пользователя

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3152A User Manual
Racal Instruments
©
2001 Using The Instrument 3-29
When sending binary blocks to the Model 3152A, 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 ODHEX and OAHEX to be used as data points.
The IEEE-STD-488.2 definition of Definite Length Arbitrary Block
Data Format is demonstrated in
Figure 3-1.
Figure 3-1, Definite Length Arbitrary Block Data Format
16-bits of data are sent to the Model 3152A although only 12
bits are required to generate the waveform. The order of bytes
and bits and their values are shown in
Figure 3-2.
Figure 3-2, 12-Bit Waveform Data Format
In USER Waveform download mode, 16-bits of data are sent to
the Model 3152A and all 16-bits are used to generate the
waveform and the control and sync bits. The order of bytes and
bits and their values are shown in
Figure 3-3.
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D1 D0
W AVEFORM DATA
12-bit Binary Value (0-4096) per Point
D2
4 Control Bits
M ust be set to 0000