Figure 3-7, Fast Sequence Download - Racal Instruments 3151 User Manual

"#"
Start of
Data Block
Number of Digits
to Follow in header
Byte Count: 5 x Number
of Sequence Steps
Using The Instrument 3-36
The byte ordering of the Segment Number section is: High
byte, low byte. There is an offset between the Segment
Number above and the actual segment number. The above
structure ranges from 0 to 4095. The corresponding
segments are selected as ranging from 1 through 4096 with
the TRAC:SEL command.
The Repeat Number binary structure requires restructuring of
the byte order. The MSB (Most Significant Byte) of the 3
bytes is shifted around to the beginning and the mid-byte and
LSB (Least Significant Byte) are shifted left by one byte.
Header section (ASCII)
non-zero
ASCII digit
ASCII digit
Segment Number for
this step: 2 bytes

Figure 3-7, Fast Sequence Download

A simple example using the sequence command is to generate a
1 step sequence with segment 1 repeated 74565 times:
SEQ:DATA#15<0000234501h>
where the 15 means:
1 specifies that one more byte will follow
3151 And 3151A User Manual
Binary section (binary)
Binary # of Repeats:
Binary Number
MSB shifted around to
0-4095 range
Number of Repeats for
this step: 3 bytes
restructured as follows:
Mid
MSB LSB MSB
Byte
LSB position