5.Panel Operation
45
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 highlighted, input the desired frequencies.
You can also set the frequency boundaries of frequency sweep through center
frequency and frequency span.
Center Frequency = (Start Fre 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 highlighted, 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
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.
