These are the screenshots of my tests.
DUT is a UHF data receiver unit. It has 3 PLL IC`s (MAX2871) connectet to MCU via SPI. Each PLL has 6 write only register (32bit).
The signal is the initialization sequence requiered: R5 to R0 PLL1 (CS1),R5 to R0 PLL2 (CS2) and R5 to R0 PLL3 (CS3). For testing i repeatet this sequence at 10ms intervall.
The least 3 bits of 32bit words are defining the register address.
One scan, digital input, triggered on data (CS2,R3)
![Siglent SDS2000X Plus - Bugs / Missing Features / Feature Requests 1088154-0](https://www.eevblog.com/forum/index.php?action=dlattach;topic=239370.0;attach=1088156;image)
Long memory test, digital input, only CS2 decoded, triggered on data (R3),
![Siglent SDS2000X Plus - Bugs / Missing Features / Feature Requests 1088158-1](https://www.eevblog.com/forum/index.php?action=dlattach;topic=239370.0;attach=1088160;image)
Zoomed to R3, digital input
![Siglent SDS2000X Plus - Bugs / Missing Features / Feature Requests 1088162-2](https://www.eevblog.com/forum/index.php?action=dlattach;topic=239370.0;attach=1088164;image)
Analog input, triggered on CLK timeout, 3 PLL's* 6 registers
![Siglent SDS2000X Plus - Bugs / Missing Features / Feature Requests 1088166-3](https://www.eevblog.com/forum/index.php?action=dlattach;topic=239370.0;attach=1088168;image)
Zoomed to R3
![Siglent SDS2000X Plus - Bugs / Missing Features / Feature Requests 1088170-4](https://www.eevblog.com/forum/index.php?action=dlattach;topic=239370.0;attach=1088172;image)
18 full scans
![Siglent SDS2000X Plus - Bugs / Missing Features / Feature Requests 1088174-5](https://www.eevblog.com/forum/index.php?action=dlattach;topic=239370.0;attach=1088176;image)
Analog inputs with CS, trigger on data (R3 CS2), one full scan.