Tabor Electronics 5251, Руководство пользователя

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TE5251
User Manual
3-22
other hand, you can select the arbitrary modulating wave option
where you can use any shape however, you must load the
modulating waveform from an external application, such as the FM
composer in ArbConnection. Click on the button next to the required
modulating waveform shape to select it.
Arbitrary FM Parameters
Allow adjustment of the sample clock of the modulating waveform.
The shape of the modulating waveform must be downloaded from
an external utility such as ArbConnection and the sample clock is
programmed from this location.
To change the FM parameters, point and click on the required
parameter. The value that is associated with the lit LED is displayed
on the digital display. You can use the dial, keyboard, or the [
↑
] [
↓
}
keys to adjust the readout to the required setting. After you modify
the reading, press Execute to complete the process.
Figure 3-13, the FM Panel
AM
The AM group contains parameters for controlling the frequency
modulation function. To turn the AM function on and off, click on the
FM button in the Modulation group. The various controls in the AM
group are described below.
Mod Wave
There is a list of 4 waveforms that can be selected to modulate the
carrier waveform (CW). These are sine, triangle, square and ramp.
The frequency and amplitude of the modulating waveforms are
programmable
Freq
Programs the frequency of the modulating waveform. Note that the
frequency setting must be smaller than the CW frequency for the
AM function to operate correctly.