HP 54620A User's And Service Manual page 236

time reference concepts, 133
time reference indicator, 39
displayed, 84
time reference position
concepts, 133
Time/div, 39
and missed trigger, 71, 131
knob, 37
setting, 48
using vernier to decrease step interval, 48
Time/div setting
changing in delayed sweep, 82
different for delayed and main sweeps, 82
for graticule divisions, 87
timebase
affects sample period, 129–138
and missed trigger, 71, 131
choose to represent events, 145
concepts, 129–138
preset configuration, 119
setting, 37, 39, 48
setting during Autoscale, 45
varying during run, 138
tolerance of power supply
adjusting, 160–161
measuring voltage, 161
TORX drivers, 181
trace
clearing from memory, 116
display problems, 123–124
trace memory, 111
message, 214
save/recall, 112
softkey menu, 112
trace waveform
recalling from memory, 115
saving to memory, 114
training board
See training kit
training kit, 24–26
transition time, 141
transitions
in hold time measurement, 103
in setup time measurement, 101
on start and end channels, 99
used in measurement, 96
transitions of glitches, 143–148
triangle indicators
empty(trigger delay), 84
solid (trigger position), 84
trigger, 65
action to cause, 71, 132
advanced, 67, 74–79
analyzer from other instruments, 104
and acquisition, 46
AND, OR, then operators, 75
defining edges, 74
defining patterns, 75
duration operator, 75
edge, 47, 72
entered and exited operators, 75
missed in certain conditions, 71, 131
occurs operator, 75
on microprocessor system failure, 78
on pulse train, 77
on sequential patterns, 77
operators, 74–79
other instruments, 104, 107
pattern, 66, 73
preset configuration, 119
setting during Autoscale, 45
sources, 74–79
trigger concepts
trigger may be missed, 131
trigger may not be stored, 133
trigger definition
experimenting with, 76
trigger event
adjusting delay, 86
position in acquisition memory, 70, 83–85
trigger functions, 132
trigger mode, 70–71
Auto, 39
Normal, 39
trigger mode vs. trigger type, 71
trigger modes
Auto, 131
Normal, 131
trigger not found
and auto trigger, 70, 131
trigger output, 104
BNC, 110
condition satisfied, 107
generated at various rates, 110
use for single-shot events, 107
trigger output rate
affected by overhead, 110
increase, 110
trigger position
indicators displayed, 84
trigger rate
affected by overhead, 107
trigger system
performance characteristics, 200
trigger type vs. trigger mode, 71
triggering capabilities
extended, 104
troublehooting the analyzer, 164
troubleshoot power supply
using dummy load, 155
troubleshooting
accessories, building, 155
the analyzer, 150, 165–167
TTL threshold, 53–54
turn off cursors, 94–95
turning channels on and off, 49
turning on power, 27
U
undo Autoscale, 44–45, 113, 119
unexpected trace display, 124
unhooking power switch shaft, 187
unique states in waveform and pattern
trigger, 66
user interface
overview of, 35–36
user-defined threshold, 53–54
using Auto trigger mode, 76
using color, 30
using Normal trigger mode, 76
using the analyzer
process of, 18, 20
Utility key
used to run self-tests, 152–154
V
variables in probing, 142
verify performance
with self-tests, 151
vernier, 48
vertical
linearity, 163
size, 163
Index
235