Datasheet
19
5.2.4 Symmetry (Ramp)
Symmetry represents the fraction of time per cycle that the ramp wave is rising. After
selecting the ramp, press 〖Ramp Symmetry〗then set the desired value of symmetry.
The symmetry will remain unchanged if output frequency is changing. Rising Ramp will
be shown when symmetry is 100%, falling ramp will be shown when symmetry is 0%,
triangle wave display when symmetry is 50%.
5.2.5 Set Frequency
The output frequency range depends on the function currently selected and the upper
limit for sine depends on the model selected. The minimum frequency is 1μHz for all
functions. For detail specification, please see chapter 5. If you change to a function
whose maximum frequency is less than that of the current function, the frequency is
adjusted to the maximum value for the new function. The distortion will go increasing as
frequency rising.
To set the output frequency, press the 【Continuous】key, then the 〖Freq/Period〗
softkey for the selected function. Then use the knob or numeric keypad to enter the
desired frequency. Or press 〖Freq/Period〗 softkey again to set using Period. For
internally applying to frequency synthesis, the display period value is the conversed one
from enter value.
5.2.6 Set Amplitude
You can set amplitude by ‘amplitude’ or ‘level’. If amplitude set is selected, high level and
low level of signal will change at the same time when changing amplitude but DC offset
remain unchangeable. If level set is selected, no matter high level or low level changing,
low or high level remain unchangeable but DC offset will change. The relationships
between Vpp, High, Low and offset are shown below:
Vpp=High-Low High=Offset+Vpp/2 Low=Offset-Vpp/2
In continuous menu, press softkey 〖Ampl/High lev〗to set amplitude or high level. Press
softkey 〖Offset/Low lev〗 to set dc offset or low level.
5.2.7 Amplitude Limitation:
The output amplitude is limited by following factors. Once over the limitation, the
generator will modify the setting as its allowed maximum within the limitation.
(1) Limit Level: press 〖Ouput Menu〗softkey and then〖High Lev Limit〗softkey specify
the limit value of high level. Press〖Low Lev Limit〗softkey specify the limit value of
low level. Even if wrong operation that exceed the limit value, the generator won’t be