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Front Panel Operation - 5
57
6 – Making Enhanced Front Panel Measurements
The following figure illustrates the enhanced measurement capabilities of Agilent Models 66321B/D and
66319B/D for measuring output waveforms. These include peak (max), minimum, high level, and low
level measurements as illustrated in the following figure. Rms and dc voltages are calculated from the
number of points in the measurement window.
V or A HIGH
V or A MAX
V or A MIN
100 millisecond
V or A LOW
acquisition time
46.8 microsecond
sampling rate
NOTE:
coincide with the actual maximum
or minimum point of the waveform.
Measurement samples may not
Figure 5-5. Default Front Panel Measurement Parameters
All models have three current measurement ranges that can be selected in the Input menu. A maximum
current range is available for measuring output currents of up to 7 amperes. A 1 A current range is
available for measuring currents up to 1A. A 0.02A current range is available for improved resolution
when measuring output currents below 20 milliamperes. The low current measurement range is accurate
to 0.1% of the reading ±2.5 microamperes. When the current Range is set to AUTO, the unit
automatically selects the range with the best measurement resolution.
NOTE: In the 0.02A current measurement range, the current detector is fixed at DC. With the
current detector in dc, accurate current measurements cannot be made on waveforms
with frequency contents over 1 kilohertz.
Use the Meter menu for making front panel measurements:
Action Display
1.
On the Function keypad press Meter and press ( repeatedly
to access the following measurement parameters:
♦ dc voltage and current
♦ peak voltage
♦ minimum voltage
♦ high level of a voltage pulse waveform
♦ low level of a voltage pulse waveform
♦ rms voltage
♦ peak current
♦ minimum current
♦ high level of a current pulse waveform
♦ low level of a current pulse waveform
♦ rms current
<reading>V <reading>A
<reading>V MAX
<reading>V MIN
<reading>V HIGH
<reading>V LOW
<reading>V RMS
<reading>A MAX
<reading>A MIN
<reading>A HIGH
<reading>A LOW
<reading>A RMS
2. To change the front panel time interval and buffer size for output waveform
measurements, press Shift, Input. Then press ( until you obtain the TINT
command. Use the Entry keys to enter a value from 15.6 microseconds to 1
second in seconds. Then press Enter.
TINT 0.002