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Transmission Sequence of Data on GPIB
Table 5-2 on page 315 shows a GPIB transmission sequence for each
format mode. Each one transmits the +10 dBm amplitude level of a
one-element trace with the amplitude equal to the reference level. In
each case, the HP 9000 Series 200 or 300 computer must be instructed
how to interpret the data received correctly. The parenthetical numbers
in the table are decimal values representing binary 8-bit numbers.
Table 5-2
GPIB Transmission Sequence for Different Trace-Data Formats
(TDF)
TDF P
TDF M
TDF A
TDF I
TDF B
Chapter 5
Byte 1
Byte 2
Byte 3
1
0
.
6
0
0
#
A
(0)
#
I
(2)
(2)
(88-EOI)
Data Transfer to Computer
Byte 4
Byte 5
Byte 6
0
0
(10-EOI)
(10-EOI)
(2)
(2)
(88-EOI)
(88-EOI)
Programming
315
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