Set carrier frequency
Table 4-1:
Carrier frequency range varies with carrier waveform. The default frequency
of all carrier waves is 1kHz. See the table 4-1 below for the carrier wave
frequency ranges:
Frequency
UTG9002C-II
UTG9005C-II
Min
1μHz
1μHz
1μHz
1μHz
Max
2MHz
2MHz
200kHz
1MHz
Min
1μHz
1μHz
1μHz
1μHz
Max
5MHz
5MHz
200kHz
1MHz
Carrier waveform
Sine wave
Square wave
Ramp wave
Arbitrary wave
To set the carrier frequency, when the STD carrier wave is selected, press
the Freq button and enter the required value, then select the unit to complete.
Select modulation source
UTG9000C-II Function/Arbitrary Waveform Generator can select internal or
external modulation source. After the AM function is enabled, the modulation
source is internal by default.
You can change the modulation source to external by pressing the key
when the MOD modulation is selected, the task bar of modulation information
on the upper part of the screen will display the “Ext” symbol. To exit EXT,
just press the sine, pulse, arbitrary, or noise key.
1) Internal source
When modulation source is selected as internal, the modulation wave can
be: sine wave, pulse wave, arbitrary wave, and noise.
Pulse wave: duty ratio is 50%.
Arbitrary wave: when selecting arbitrary wave as modulation waveform,
the built-in 20 arbitrary waveforms can be selected using the keypad or
direction keys.
Noise: white Gaussian noise.
2) External source
When modulation source is selected as external, modulation wave and
frequency options will be hidden in parameter list, and an external waveform
will be used to modulate the carrier waveform.
The AM modulation amplitude is controlled by the ±5V signal level on the
external modulation input terminal and the modulation depth.
For example, if modulation depth is set to be 100%, AM output amplitude
is the largest when external modulation signal is +5V and the smallest
when external modulation signal is -5V.
Picture 4-3 Select AM modulation source
UTG9000C-II User Manual
