The SDG2042X is part of the new SDG2000X series of function generators by Siglent. These generators offer 2 channels with a bandwidth up to 120 MHz at 1.2 GSa/s. The TrueArb and EasyPulse technologies decrease deficiencies found in other DDS generators. The function generators offer large signal outputs up to high frequencies. They are guaranteed to be capable of outputting 20 Vp-p for signals up to 20 MHz. With the 16 bit vertical resolution the SDG2000X series offer a very precise signal representation.
With TrueArb the signals are generated point-by-point. Every data-point is processed individually without any concern of the points surrounding the data. This decreases jitter and error.
EasyPulse focusses mainly on square waves. Conventional DDS devices have difficulties with signals that have a frequency which isn't an integer-related multiple of the clock frequency. This causes jitter as can be seen in the image. The output isn't increased in the same clock cycle, causing the signal to be inconsistent. This is fixed in the SDG2000X series.
These function generators are easy to use. They offer a touchscreen interface along with hardware buttons. Using USB or LAN connection the devices can be connected to a pc allowing the user to program arbitrary waveforms. With the software the waveforms can be programmed by drawing them with the mouse, using formulas to calculate them, or through coordinates.
Apart from that the generators offer a diverse set of modulations. They can use AM, FM, PM, FSK, ASK en DSB - AM modulations. The rise/fall times can be set individually from 8,4ns to 22,4s with steps of 100ps.
The models in de SDS2000X series differ mainly in bandwidth. Apart from that they are similar.
|Analogue bandwidth||40 MHz||80 MHz||120 MHz|
|Sample rate||1.2 GSa/s|
|Vertical resolution||16 bit|
|Frequency counter range||100 mHz - 200 MHz|
|Connectivity||USB device, USB host, LAN|
|Afmetingen||260.3 x 107.2 x 295.7 mm|
To explain the functionality of the devices Siglent made a short film,
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