MP7505 Series User Manual
(4) Press the Type softkey to switch the sweep type.
When Linear is selected, the output frequency of the instrument varies linearly
during the sweep.
When Log is selected, the output frequency of the instrument varies in a
logarithmic fashion during the sweep.
When Step is selected, the output frequency of the instrument steps from start
frequency to stop frequency. The duration of the output signal on each
frequency point is determined by sweep time and step number. Press the Step
softkey to set the desired step number.
(5) Start frequency and stop frequency are the upper and lower limits of the
frequency for frequency sweep. The generator sweeps from the start frequency
to the stop frequency and then returns back to the start frequency. Press the
StartFreq/CtrFreq softkey to hightlight StartFreq, note that StopFreq in
StopFreq/FreqSpan is also highlit, input the desired frequencies.
You can also set the frequency boundaries of frequency sweep through center
frequency and frequency span.
Center Frequency = (Start Frequency + Stop Frequency) / 2
Frequency Span = Stop Frequency – Start Frequency
Press the StartFreq/CtrFreq softkey to hightlight CtrFreq, note that FreqSpan in
StopFreq/FreqSpan is also highlit, input the desired frequencies.
For different instrument models and different waveforms, the setting ranges of
frequency are different. For detailed information, please refer to Sweep
characteristics in Specification on page 68.
(6) Press the Trigger softkey to select the trigger source.
Internal means using the internal trigger source.
External means using the Mod/FSK/Trig connector at the rear panel to input
the external trigger signal. A sweep will be generated once the connector gets a
TTL pulse with specified polarity. To set the TTL pulse polarity, press the Slope
softkey to switch between Positive and Negative.
Manual means using manual trigger. In sweep interface, each time you press the
Trigger button under the current channel on the front panel, a sweep will be
generated.
Generate Burst (Burst)
Press the Burst key on the front panel to generate versatile waveforms in burst. Burst
can last for certain times of waveform cycle (N-Cycle Burst), or to be controlled by
external gated signals (Gated Burst). Bust can apply to Sine, Square, Ramp, Pulse,
Noise (only for gated burst) and Arbitrary waveforms.
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