User Manual

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5.10.3 Marker Frequency
press 〖Marker Freq〗softkey, then use the knob or numeric keypad to enter the desired marker
frequency. The marker frequency must be between the specified start frequency and stop frequency.
If you attempt to set the marker frequency to a frequency not in this range, the waveform generator
will automatically set the marker frequency in the middle point between the start frequency and stop
frequency.
5.10.4 Sweep Mode
After enabling sweeps, press the 〖Mode Line/Log〗 softkey again to toggle between the linear or log
mode.
Under linearity sweeping mode, the frequency step is fixed, but a fixed frequency step
always does a bad effect when sweeping comparatively wide-range frequency. In that case,
the resolution is high when sweeping high stop of frequency, the frequency changes slowly,
and the sweeping is fine. But the resolution is low when sweeping the low end of frequency,
the frequency changes very quickly, the sweeping is rough. So linearity sweeping is
applicable only for sweeping with narrow frequency range.
Under logarithm sweeping mode, the frequency step value is not fixed but changes
according to logarithm relation. When sweeping the high stop of frequency, the frequency
step value is comparatively large; when sweeping the low end of frequency, the frequency
step value is comparatively small. The frequency change is comparatively average for
sweeping with wide frequency range. So logarithm sweeping is applicable for sweeping
with wide frequency range.
5.10.5 Sweep Time
After enabling sweeps, press 〖Sweep Time〗softkey. Then use the knob or numeric keypad to
enter the desired sweep time.
Sweep time represents the time required to sweep from the start frequency to the stop frequency.
The time interval to sweep from one frequency to next one is constant, so more sweep time results in
more sweep frequency points and finer sweep step, vice visa.