EasyPulse Technology Introduction for Siglent SDG5000 Series Arbitrary/Function Waveform Generator

SHENZHEN, China - March 22, 2014 - PRLog -- In generally, most signal generator produce pulse signals in the way of filling the DDS waveform memory with the original pulse data. With the previously edited pulse waveform data tables regarding different rising/falling edge and pulse width, DDS can output the corresponding pulse waves. The pulse edge or width can be fine-adjusting, and with low jitter. As shown in the following functional block diagram:

http://www.siglent.com/Easypulse/EasyPulse11.1.jpg

Through with several technical defects shown in the below:
● Rising/Falling edge is affected by frequency variation, and extremely slow under low frequency;
● Duty cycle can't be made to very small with the limitation of waveform length,
● Longer time to upgrade pulse waves corresponding data for waveforms with longer length.

Considering the above technical defects, Siglent develops an innovative pulse generating algorithm, which is named as EasyPulse technology and is adopted in the new SDG5000 series. Based upon the new technology, SDG5000 can produce pluses with quick rising/falling edge, low jitter, tiny duty cycle and is none- affecting by frequency variation. What’s more, the pulse edge or width can be fine adjusted in large range. As shown in the following functional block diagram:

http://www.siglent.com/Easypulse/EasyPulse1.jpg

Compared with the traditional technology, the innovative EasyPulse technology is featured with the following superior advantages:
● Can output pulses with quick rising/falling edge (6ns) under very low frequency (less than 1Hz);
● Pulse width can be minimized to 12ns under low frequency, with extremely low duty cycle;
● Parameters of pulse can be easily and immediately changed without updating any waveform data;
● Pulse Edge or width can be widely adjusted.

Here we will show you the outstanding performance of EasyPulse through several applications:

1. As shown in figure 1, compared with the slow rising edge (millisecond) of ordinary DDS, EasyPulse technology can keep rapid rising/falling edge (6ns).

(http://www.siglent.com/Easypulse/EasyPulse2.jpg)
Figure1 Comparison of rising edge under 1Hz frequency

2. The pulse width of EasyPulse technology can be minimized to 12ns, with a extremely lower duty cycle (less than 0.0001%). However, the pulse width of ordinary DDS is significantly higher with no more lower adjusting of duty cycle.

(http://www.siglent.com/Easypulse/EasyPulse3.jpg)

Figure 2 Comparison of duty cycle under 1Hz frequency

3. When the pulse frequency is 0.1Hz, the pulse edge of EasyPulse can be widely adjusted from 6ns to 6s, while the pulse edge adjusting of ordinary DDS is extremely limited.

(http://www.siglent.com/Easypulse/EasyPulse4.jpg)
Figure 3 Comparison of pulse edge adjusting range under 0.1Hz frequency

4. when measuring jitter of cycle to cycle using EasyPulse technology, the RMS value (sdev) being measured is under 100ps.

(http://www.siglent.com/Easypulse/EasyPulse5.jpg)
Figure 4 Pulse of low jitter under EasyPulse technology