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Diffstat (limited to 'docs/Measuring_Resonances.md')
| -rw-r--r-- | docs/Measuring_Resonances.md | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/docs/Measuring_Resonances.md b/docs/Measuring_Resonances.md index 1ab21eed..0897628f 100644 --- a/docs/Measuring_Resonances.md +++ b/docs/Measuring_Resonances.md @@ -36,16 +36,16 @@ An ethernet cable with shielded twisted pairs (cat5e or better) is recommended for signal integrity over a long distance. If you still experience signal integrity issues (SPI/I2C errors): - * Double check the wiring with a digital multimeter for: - * Correct connections when turned off (continuity) - * Correct power and ground voltages - * I2C only: - * Check the SCL and SDA lines' resistances to 3.3V are in the range of 900 - ohms to 1.8K - * For full technical details consult [chapter 7 of the I2C-bus specification - and user manual UM10204](https://www.pololu.com/file/0J435/UM10204.pdf) - for *fast-mode* - * Shorten the cable +- Double check the wiring with a digital multimeter for: + - Correct connections when turned off (continuity) + - Correct power and ground voltages +- I2C only: + - Check the SCL and SDA lines' resistances to 3.3V are in the range of 900 + ohms to 1.8K + - For full technical details consult [chapter 7 of the I2C-bus specification + and user manual UM10204](https://www.pololu.com/file/0J435/UM10204.pdf) + for *fast-mode* +- Shorten the cable Connect ethernet cable shielding only to the MCU board/Pi ground. |