![Tenma 72-14120 Скачать руководство пользователя страница 85](http://html.mh-extra.com/html/tenma/72-14120/72-14120_manual_1086576085.webp)
84
Figure 4- 99 Select SUM function
Select carrier waveform
SUM carrier waveform can be sine wave, square wave, sawtooth wave or arbitrary wave (except DC), and is sine wave by
default. After SUM is selected, press the key of basic waveform setting to set the corresponding carrier waveform.
Set carrier frequency
Carrier frequency range varies with carrier waveform. The default frequency of all carrier waves is 1kHz. See the table
below for frequency range of carrier wave:
Table 4- 12
Carrier waveform
Frequency
72-14120
72-14122
72-14126
Sine wave
1μHz~ 80MHz
1μHz ~ 120MHz
1μHz ~ 160MHz
Square wave
1μHz ~ 30MHz
1μHz ~ 40MHz
1μHz ~ 50MHz
Sawtooth wave
1μHz ~ 30MHz
1μHz ~ 40MHz
1μHz ~ 50MHz
Pulse wave
1μHz ~ 2MHz
1μHz ~ 3MHz
1μHz ~ 4MHz
Arbitrary wave
1μHz ~ 30MHz
1μHz ~ 30MHz
1μHz ~ 30MHz
To set carrier frequency, please use the multi-functional control and direction keys or press the corresponding key, input
the required value and select the unit.
Select modulation source
The function/arbitrary waveform generator can select internal or external modulation source. After you use SUM function,
the modulation source is internal by default. You can change it with the multi-functional control on the interface for using
SUM function or by pressing function menu Source.