User`s guide

224 53220A/53230A User’s Guide
6 53220A/53230A Math, Graphing, and Data Logging
Trend Charts
Reading trends for a given number of counter measurements (except continu-
ous totalize) or timestamps can be represented within a 53220A/53230A
trend chart, also known as a run chart.
Figure 6-8 shows the components of a typical counter trend chart.
Figure 6-8. Trend Chart Display Format (without decimation).
Y
Max: maximum reading value within display span
Y
Min: minimum reading value within display span
S
pan: (Y Max – Y Min)
Function
Channel
Current reading count
(memory)
M
aximum and minimum scale
b
oundaries and reading units.
B
oundaries can be auto-scaled or set
m
anually. Auto-scaled boundaries
k
eep all readings within the display
r
ange.
reading indices
Mkr 1: reading value at Marker1 location
Mkr 2: reading value at Marker2 location
Span: difference in values between
marker locations
Reading: marker’s location in reading coun
t
Span: number of readings between
marker locations
Trend Window
(100 points)
position window - for marker, zoom,
and pan adjustment the decimal
position (i.e. 1000's, 100's, 10's, 1's)
highlighted by the arrow keys sets
the amount of movement (coarse –
fine) for each tick of the rotary knob.