HP 16554A Programmer's Manual page 294

DATA and SETup Commands
Data Preamble Description
Byte Position
4 bytes - List of pods in this analyzer, where a binary 1 indicates that the
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corresponding pod is assigned to this analyzer
bit 31
unused
bit 23
unused
bit 15
unused
bit 7
Pod 7
Example xxxx xxxx xx1x xxxx xxx0 0000 0001 111x indicates that data
pods 1 through 4 and clock pod 1 are assigned to this analyzer (x = unused).
4 bytes - Master chip for this analyzer.
41
4 bytes - Maximum hardware memory depth available for this analyzer.
45
4 bytes - Unused.
49
8 bytes - Sample period in picoseconds (timing only).
53
Example
The following 64 bits represent a sample period of 8,000 picoseconds
(8 nanoseconds):
00000000 00000000 00000000 00000000 00000000 00000000 00011111 01000000
17–8
bit 30 bit 29 bit 28
unused unused unused
bit 22 bit 21 bit 20
unused clkpd1 unused
bit 14 bit 13 bit 12
unused unused Pod 12
bit 6 bit 5 bit 4
Pod 6 Pod 5 Pod 4
bit 27 bit 26 bit 25
unused unused unused
bit 19 bit 18 bit 17
unused unused unused
bit 11 bit 10 bit 9
Pod 11 Pod 10 Pod 9
bit 3 bit 2 bit 1
Pod 3 Pod 2 Pod 1
bit 24
unused
bit 16
unused
bit 8
Pod 8
bit 0
unused