GW Instek GDS-2000A series Quick start guide for Logic analyzer option - Manual (Page 17)

Bus Trigger Settings –I 2 C
The digital channels can be set up to trigger on I 2 C
specific conditions.
1. Configure the Bus key to I 2 C.
 The I 2 C option needs to be set in the Bus
menu first before the I 2 C trigger settings can
be configured.
2. Press the trigger Menu key and select
Type > Others > Bus.
3. Press Trigger On to set triggering conditions.
 There are 7 I 2 C triggering conditions: Start,
Repeat Start, Stop, Missing Ack, Address,
Data, Data/Address.
4. If Data or Data/Address was selected as the trigger
condition, press Data to configure what data to
trigger on.
5. If Address or Data/Address was selected as the
trigger condition, press Address to configure the
address and the addressing mode to trigger on.
 An address preset can also be chosen if
Address was selected as the trigger condition.
This option is not available for the
Data/Address triggering condition.
Press Direction to configure read/write direction.
6. Press Mode to select either Auto (untriggered roll)
or Normal triggering modes.