Stanford Research Systems DS335, User Manual

Page: 25 / 86

Function Setting 2-11
DS335 Synthesized Function Generator
Vpp Vrms
Function Max. Min. Max. Min.
Sine 20V 0.1V 7.07V 0.04Vrms
Square 20V 0.1V 10.0V 0.05Vrms
Triangle 20V 0.1V 5.77V 0.03Vrms
Ramp 20V 0.1V 5.77V 0.03Vrms
Noise 20V 0.1V 3.24V 0.02Vrms
HIGH-Z Load Impedance
Output Inversion The DS335's output may be inverted for ramp functions. This is useful for
turning positive ramps into negative ramps. Entering a negative amplitude
inverts the ramp output.
D.C. Only The output of the DS335 may be set to a DC level by entering an amplitude
of 0 V. When the amplitude is set to zero the A.C. waveform will be
completely shut off and the DS335 may be used as a DC voltage source.
DC OFFSET When the [OFFS] key is pressed the DC offset is displayed and the V
pp
indicator LED will be lit. A new value may be entered numerically with any
amplitude unit key. In general, the DC offset may range between ±5V, but is
restricted such that |V
ac peak
| + |V
dc
|
≤
5 V (into 50 Ohms), or | V
ac peak
| +
|V
dc
|
≤
10 V (into HIGH-Z). The DC offset is also restricted such that |V
dc
|
≤
2 x V
pp
. When the offset is changed, the output signal will briefly go to zero
as the output attenuators are switched, and then back to the set offset value.
SYNC ENABLE Pressing the [SHIFT] [.] key enables the SYNC OUT function. The
[SHIFT][0] disables the output by highly attenuating the output function
signal.