#Dsa815 tg plus

YouвЂ™re lucky to be able to see tens of mV. So why spend precious bucks on another instrument?ДЄ scope is not particularly sensitive.

When in the noise I found them just about impossible to recognize.ДЄll of the important settings are clearly shown on the screen.Д®very modern digital scope can show the FFT of an input signal, which is exactly the same display. WBJC, at 91.5 MHz in the photo, comes in at -75 dBm, or around 50 picowatts.ДЄnd, though the instrument can display four markers and do delta math between them, they sure are hard to see. In this case the SAвЂ™s input is one meter of wire acting as an antenna.ДЄ couple of things to note: first, while the DSA815 and all other SAвЂ™s will display amplitude in a variety of units, the most useful is dBm, or dB referenced to 1 milliwatt. The peaks are various radio stationsвЂ™ carrier frequencies. ItвЂ™s positioned at 91.5 MHz, the Baltimore classical station. The marker is barely visible as a вЂњ1вЂќ towards the left side of the screen. The center frequency is 100 MHz with a span of 20 MHz (that is, the SA is sweeping from 90 to 110 MHz), RBW and VBW (more on these later) of 3 KHz. The following picture shows the Rigol displaying the FM radio band. An SA shows amplitude on the vertical and frequency on the horizontal. Everyone knows that an oscilloscope displays voltage on the vertical axis, and time on the horizontal.

One large wheel can adjust pretty much anything.

#Dsa815 tg plus

Picture swiped from RigolвЂ™s web site.ДЄs is apparent from the picture, the front panel is well-laid out with individual buttons for each function, plus soft-buttons used to select sub-modes.