HP 16550A User Reference page 109

I
One Configured Analyzer
Pod Pair 3/4
Pod Pair 3/4, 5/6
The Trigger Menu
Count Field (State only)
Time Time count places time tags on
all
displayed pretrigger and
posttrigger data. Data stored before trigger has negative time numbers
and data stored after trigger has positive time numbers. Time tag
numbering is set to be either relative to the previous memory location or
absolute from the trigger point. Selecting the Absolute or Relative option
is done by toggling the Absolute/Relative field. Time tag resolution is 8
ns.
10 50 LA
Markers
Pattern
( Listing
1 )
Find
J
~
X-pattern
~
Label>
JMACH1JJ
Tirne
~
( Run
from Specif~
Trigger Pat terns
1
~-B_as_e~> ~
J
Relative
J - - - - - - - - - - - - - - - - , 1 - - - - - - - - - - -
Relative/Absolute
toggle field -6
-5
97
98 80
ns
-"1
99 80 ns
-3 9A 80
ns
-2
96 80
ns
-1
9C 80
ns
Times tag
~
1
9D 80
ns--------------t-----------~
9E 80
ns
9F 80 ns
AO 80 ns
A 1 80 ns
A2 80
ns
A3
80 ns
A"i
80 ns
A5 80 ns
Relative/Absolute Toggle Field
To Retain Full Memory Using Time or State Tags To retain the full
memory depth when using time or state tags requires the unassigned of
one pod pair. The exact pod pair to unassigned in all possible
configurations varies. The table below shows the pod pairs to unassign in
most applications.
Two Configured Analyzers
Pod Pair 3/4
Pod Pair 3/4, 5/6
5-40