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Protocol analysis
R&S
®
MXO 5 Series
323User Manual 1802.3369.02 ─ 02
2. Select the tab of the bus that you want to set up, for example "SB1".
3. Tap the "Protocol type" button. Select the protocol: "I2C".
4. Tap on "State" to enable the decoding.
An I2C shortcut appears at the bottom left of the screen. Tap on the shortcut for a
quick access to the "I2C" dialog settings.
5. Tap on each active wire and select the correct channels: "SDA source" and "SCL
source".
6. Check that the signals are on the screen.
If not try adjusting the vertical and horizontal settings.
7. Set the logical thresholds:
a) Tap "Threshold setup". The threshold dialog opens.
b) For each wire, set the threshold value. A typical value is 1.65 V.
c) If necessary, set the hysteresis value for the wires.
d) Optionally, tap on "Show threshold lines".
I²C (option R&S
MXO5-K510)
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