Keysight Technologies U1273A Guide De L'utilisateur page 49

Analog bar graph
The analog bar emulates the needle on an analog multimeter, without displaying
the overshoot. When measuring peak or null adjustments and viewing
fast-changing inputs, the bar graph provides a useful indication because it has a
faster updating rate
For frequency, duty cycle, pulse width, 4-20 mA % scale, 0-20 mA % scale, dBm,
dBV, and temperature measurements, the bar graph does not represent the
primary display value.
For example, when frequency, duty cycle, or pulse width is displayed on the
primary display during voltage or current measurement, the bar graph represents
the voltage or current value (not the frequency, duty cycle, or pulse width value).
Another example is when 4-20 mA % scale or 0-20 mA % scale is displayed on the
primary display, the bar graph represents the current value and not the
percentage value.
The "+" or "–" sign indicates whether the measured or calculated value is positive
or negative. Each segment represents 1000 or 500 counts depending on the
range indicated on the peak bar graph.
Table 1-8 Analog bar graph display
Range
An unstable bar graph and unmatched primary display when measuring DC
voltage usually means the presence of AC voltages in the circuit.
[1] The analog bar graph measurement rate is approximately 50 times/second for DC voltage, current,
Keysight U1273A/U1273AX User's Guide
[1]
to cater for fast-response applications.
Counts/
Segments
400
1000
and resistance measurements.
Used for the function
, ,
, , ,
Introduction 1
49