1-31
IM 701450-51E
I
2
C Bus Signal Analysis Function
1
Explanation
Setting the Analysis Conditions: Analyze Setup
You can set the following conditions.
Clock Channel
Set the clock channel to CH1 or CH3. If you set the clock channel to CH1, the data
channel is set to CH2; if you set the clock channel to CH3, the data channel is set to
CH4.
• Level
Set the level used to determine the rising or falling edge of the clock signal.
Selectable range: 8 divisions within the screen
Resolution:
0.01 divisions (For example, the resolution for 2 mV/div is 0.02 mV.)
• Hysteresis
Selectable range: 0.3 div to 4.0 div
Data Channel
Set the data channel to CH2 or CH4. If you set the data channel to CH2, the clock
channel is set to CH1; if you set the data channel to CH4, the clock channel is set to
CH3.
• Setting the Threshold Level
Set the level used to determine the data channel signal level (0, 1, or indefinite).
Thr Upper
Signal exceeding this level is determined to be 1.
Thr Lower
Signal below this level is determined to be 0.
If Thr Lower
≤
data signal level
≤
Thr Upper, the signal level is determined to be
indefinite data.
If indefinite data is found, “
∗
” is displayed in the hexadecimal display box at the byte
where the indefinite data exists on the display screen of analysis results.
SDA
SCL
1
2
3
4
5
6
7
8
9
1
0
0
1
Indefinite data
0
0
1
Thr Lower
Thr Upper
Analysis Reference Point
Select the reference point used to start the analysis from the following:
Trigger Position
Sets the reference point to the trigger position.
Manual
You can set the reference point in the range of –5 to +5 divisions.
Items to Be Analyzed
The following types of data can be analyzed.
• Historical data.
• Data that is displayed when the waveform acquisition is stopped.
• Loaded acquisition data (ACQ data).
Analysis is performed only on the waveform selected by “Select Record” for historical
data.
1.5 Analyzing/Searching Data
