Stanford Research Systems DS335, User Manual

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1-2 Getting Started
DS335 Synthesized Function Generator
6) Press [SHIFT UP ARROW] twice. Observe that the blinking digit is shifted twice to the left
indicating a step size of 10 Hz.
7) Press [UP ARROW] three times. We've changed the output frequency to 10.0301 kHz.
Frequency Sweep The next example demonstrates a linear frequency sweep. The DS335 can
sweep the output frequency of any function over the entire range of allowable
output frequencies. There are no restrictions on minimum or maximum
sweep span. The sweep is phase continuous and may range from 0.01Hz to
1000 kHz.
Attach the FUNCTION output BNC to the oscilloscope, terminating the output
into 50 ohms. Set the scope to 2V/div. Attach the SWEEP rear-panel BNC
to the scope and set to 2V/div. The scope should be set to trigger on the
rising edge of this signal.
1) Press [SHIFT][+/-]. This recalls the DS335's default settings.
2) Press [AMPL] then [5][Vpp]. Sets the amplitude to 5Vpp.
3) Press [SHIFT] [STOP FREQ]. Verify linear sweep. "Lin" should be blinking now.
4) Press [SWEEP RATE] then [1][0][0] [Hz]. Set the sweep rate to 100 Hz. The sweep will take 10 ms
(1/100Hz). Set the scope time base to 1ms/div.
5) Press [START FREQ] then [1][0][0][kHz]. Set the sweep start frequency to 100 kHz.
6) Press [STOP FREQ] then [1][MHz]. Set the stop frequency to 1 MHz.
7) Press [SHIFT][START FREQ]. The SWP LED will light, indicating that the DS335 is
sweeping. The scope should show the SWEEP output as a
TTL pulse synchronous with the start of the sweep. The
FUNCTION output is the swept sine wave. The DS335 also
displays the option to switching to single shot sweeps at this
time. Pressing the up or down arrows at this time switches
the sweeps to single shot. Pressing [SHIFT][START FREQ]
triggers one sweep.