Agilent Technologies Agilent 33500 Series Operating And Service Manual page 93

Frequency Sweep
Front Panel:
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SCPI:
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[SOURce[1|2]:]FREQuency:STARt {<freq>|MIN|MAX}
[SOURce[1|2]:]FREQuency:STOP {<freq>|MIN|MAX}
Center Frequency and Frequency Span
You can also set the sweep frequency boundaries of the sweep using a center frequency and frequency span. These
parameters are similar to the start frequency and stop frequency (above) and they provide added flexibility.
Center frequency: 1 µHz to 30 MHz (limited to 200 kHz for ramps). The default is 550 Hz.
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Frequency span: -30 µHz to 30 MHz (limited to 200 kHz for ramps). The default is 900 Hz.
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To sweep up in frequency, set a positive frequency span; to sweep down, set a negative frequency span.
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For sweeps with Marker Off, the Sync signal is a square waveform with a 50% duty cycle. (missing or bad snippet)
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The frequency of the Sync waveform is equal to the specified sweep time. The signal is output from the front-
panel Sync connector.
For frequency sweeps with Marker On, the Sync signal is a TTL "high" at the beginning of the sweep and a "low" at
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the marker frequency. You can change this with
Front Panel:
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OUTPut[1|2]:SYNC:MODE
Agilent 33500 Series Operating and Service Guide
MARKER.