TGxA Series Function Generators: Internal and External Modulation

Digital Modulation, Internal and External

Both generators offer a comprehensive set of digitally based modulations.

The internal modulation source can use any of the standard or arbitrary waveforms within the generator (including noise) thus removing the need for an external modulation source. A modulating frequency between 1µHz and 1MHz can be specified.

An external modulation input enables any external waveform source to be used when required. The bandwidth is DC to 20kHz.

AM, FM and PM

Sine, square, ramp or arbitrary waveforms can be modulated using amplitude, frequency or phase modulation.

Amplitude depth is variable from 0.0% to 120.0%, frequency deviation from zero to Fmax/2, and phase deviation from -360.0 to +360.0 degrees.

PWM

Pulse width modulation is available for the pulse function using any standard or arbitrary waveform including noise.

Pulse width deviation is variable between 0% and 100%.

FSK

Frequency shift keying between any two frequencies is available for sine, square, ramp or arbitrary waveforms using the internal trigger generator or an external trigger signal.

The internal trigger generator is variable between 2mHz and 1MHz with 9 digit resolution.

BPSK

Binary phase shift keying is available for sine, square, ramp or arbitrary waveforms using the internal trigger generator or an external trigger signal.