Selection Of Waveform Of Channel A; Setting Of Duty Cycle - PeakTech 4055 MV Bedienungsanleitung

4.2.9. Selection of waveform of channel A:

* The generator could output 16 kinds of waveforms, press 【Shift】【Sine】, 【Shift】【Square】,
【Shift】【Ramp】keys directly to select these three kinds of common waveforms, the corresponding
waveform character will be displayed. Users may select all 16 kinds of waveforms with waveforms
sequence numbers, 【Shift】【Arb】key to show current waveforms sequence number, users may also
input waveforms sequence numbers with the numeric keys or adjusting knob to select the corresponding
waveforms defined by the sequence numbers. Except three common waveforms, the waveform character
of the other waveforms are "Arb". The waveform sequence numbers of 16 kinds of waveforms are listed
as below:
List of names and sequence numbers of 16 waveforms:
sequence
number
00
01
02
03
04
05
06
07

4.2.10. Setting of duty cycle:

When the present selection of waveform is square or ramp(including pos-square and pos-ramp), users
may press【Duty】key to display present duty cycle value, input duty cycle value with numeric keys or
adjusting knob, then the output will be square or ramp with a fixed duty cycle value. The definition of
square duty cycle is the ratio of high level time of one square to the period of this square. The usual
thought of square duty cycle is 50％, waveforms with other duty cycle are usually named pulse. The
definition of ramp duty cycle is the ratio of rising time of one ramp to the period of this ramp. The ramp
duty cycle is usually named ramp symmetry, ramps with symmetry of 0% or 100% are usually named
sawtooth wave, and ramp with symmetry of 50% is named triangle wave.
When the frequency of square is comparatively high, the setting of duty cycle is limited by the edge time,
in a relationship as below formula:
waveform
sine
square
ramp
pos-pulse
neg-pulse
stair
noise
half sine
Duty cycle× Period≥2× Edge time
Duty cycle × Period ≤ Period－（2× Edge time）
sequence
number
08
09
10
11
12
13
14
15
or
-41-
waveform
limit sine
exponent
logarithm
tangent
sin (x)/x
half round
cardiac
quake