Trigger Condition:
Press PgDn trigger condition to set the I2C trigger condition: Start, restart, stop, loss, address, data, address & data.
(1) Start: Triggers at the start time, that is, while the SCL is in high level, the SDA signal has a falling edge.
(2) Restart: Triggers at the restarting moment, that is, after a start signal, and before it stops, the start signal appears again.
(3) Stop: Triggers when the stop bit occurs, that is, while the SCL is in high level, the SDA signal jumps from low to high.
(4) Loss: In I2C protocol, every time after 8 bits of information are transmitted, the data receiver needs to send an
acknowledgement signal, which is the ACK bit in the above figure when the SCL is in high level, the SDA signal is low.
The loss trigger will occur while the SCL and SDA signal at the ACK bit are both high.
(5) Address: Triggers when the communication address is the same with the user setting address. It can help to quickly
locate the address transmission.
(6) Data: Triggers when the detected data is equal to/ greater than/ less than/ not equal to the set Value. This feature is
convenient for the data analysis and can capture the abnormal data.
(7) Address & Data: Triggers when the addresses are the same and the data relationship meets the set conditions during
the transmission process. This trigger condition makes it easy to implement the I2C’s specified address and data trigger,
and help to analyze the transmission.
Address:
Press PgDn address , and set the data address by Multipurpose knob. The ranges are 0~0x7F, 0~0xFF and 0~0x3FF
depend o different setttings in address mode.
Data Setting:
Press PgDn data setting to enter the data setting menu.
(1) Comparison condition: Used to determine the data, you can select “>”, “<”, “=”.
>: Valid when the trigger condition is data or address/data, triggers when the actual I2C protocol data is greater than the
set data.
<: Valid when the trigger condition is data or address/data, triggers when the actual I2C protocol data is less than the
set data.
=: Valid when the trigger condition is data or address/data, triggers when the actual I2C protocol data is equal to the
set data.
(2) Bytes: Valid when the trigger condition is data or address/data, set the data byte size of the specified data from 1 ~ 5.
(3) Data: Valid when the trigger condition is data or address/data, each byte length can be set from 00 ~ FF (hexadecimal
number). You can set the data by the Multipurpose knob, and press the back key to return to the previous setting menu.
Decode Bus:
Please refer to the RS232 Decode Bus.
Trigger Setting:
Please refer to the Trigger Setting in the Edge Trigger section for more details.
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Summary of Contents for UPO2000E Series
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