Instructions

5.Use the Arbitrary Function Generator (Optional)
101
Rhombus Rhombus signal
Cardiac Cardiac signal
Noise Noise signal
Frequency Response Analysis
The Frequency Response Analysis (FRA) feature controls the built-in waveform generator
to sweep a sine wave across a range of frequencies while measuring the input to and
output from a device under test. At each frequency, gain and phase are measured and
plotted on a frequency response Bode chart. When the frequency response analysis
completes, you can move a marker across the chart to see the measured gain and phase
values at each frequency point. You can also adjust the chart's scale and offset settings for
the gain and phase plots.
Note: If the signal is disturbed seriously, it is recommended to select Average in Acquire
Mode before running the analysis, the averages can only be set as 4 or 16, and then run the
analysis.
Push the Utility button, select Function in the bottom menu, select FRA in the left menu.
The description of FRA Menu is shown as the follows:
Function
Menu
Setting Description
FRA
FRA
Check to enable FRA function and show FRA scale
line and chart.
Transparent
When unchecked, FRA information is shown on the
FRA window.
When checked, FRA information is shown on the
waveform display area.
Marker
Turn Multipurpose knob to move the marker, view
measured gain and phase values.
Sweep Step

Fine
When unchecked, the sweep step is 0.1dB.
When checked, the sweep step is 0.01dB.
Setup
Input V
CH1
Input V is input from CH1.
Output V is input from CH2.
(Note: The menus are not for selecting menu items, only
for showing information.)
Output V
CH2
Min Freq

Fine
Turn Multipurpose knob to set frequency sweep min
value. Check to enable fine-tuning.
Max Freq

Fine
Turn Multipurpose knob to set frequency sweep max
value. Check to enable fine-tuning.
Amplitude
Fine
Turn Multipurpose knob to set waveform generator
amplitude. Check to enable fine-tuning.
Note: The amplitude range is 2 mVpp to 6 Vpp.
Chart
Gain Scale
Adjust scale of gain plot, range from 5dB to 500dB.