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1 | ------------------------------------------------------------------------------- | |
2 | V&A VA18B multimeter cable, serial communication | |
3 | ------------------------------------------------------------------------------- | |
4 | ||
5 | This is a set of example captures of the serial (UART) communication and | |
6 | its timings on a USB cable for the V&A VA18B digital multimeter. | |
7 | ||
8 | The UART parameters are 2400 baud, with 8n1 settings. | |
9 | ||
10 | Details: | |
11 | TODO. | |
12 | ||
13 | ||
14 | Logic analyzer setup | |
15 | -------------------- | |
16 | ||
17 | The logic analyzer used was a Saleae Logic (at 16MHz): | |
18 | ||
19 | Probe USB cable PCB | |
20 | ------------------------- | |
21 | 1 (black) IR LED | |
22 | 2 (brown) TX (PL2303HX) | |
23 | 3 (red) RX (PL2303HX) | |
24 | 4 (orange) USB DM | |
25 | 5 (yellow) UBS DP | |
26 | ||
27 | ||
28 | Data | |
29 | ---- | |
30 | ||
31 | The sigrok command line used was: | |
32 | ||
33 | sigrok-cli -d fx2lafw:samplerate=16mhz -p '1=IR LED,2=TX,3=RX,4=DM,5=DP' \ | |
34 | -o v_and_a_va18b_cable_ir_serial_usb.sr --time 10s | |
35 |