Rigol DS7034 User Programming Manual page 216

RIGOL
:TRIGger:IIC:WHEN
Syntax :TRIGger:IIC:WHEN <when>
:TRIGger:IIC:WHEN?
Description Sets or queries the trigger condition of I2C trigger.
Parameter
Name
<when>
Remarks STARt: indicates that the oscilloscope triggers when SCL is high level and SDA

transitions from high level to low level.
RESTart: indicates that the oscilloscope triggers when another start condition

occurs before a stop condition.
STOP: indicates that the oscilloscope triggers when SCL is high level and SDA

transitions from low level to high level.
NACKnowledge: indicates missing acknowledgment. The oscilloscope triggers

when SDA is high level during the acknowledgment of the SCL bit.
ADDRess: indicates that the oscilloscope searches for the specified address and

triggers on the read/write bit.
DATA: indicates that the oscilloscope searches for the specified data on the data

line (SDA) and triggers on the clock line (SCL) of the jumping edge of the last bit
of the data.
ADATa: indicates that the oscilloscope searches for the specified address and

data, and then triggers when both the address and data meet the conditions.
Return The query returns STAR, REST, NACK, REST, ADDR, DATA, or ADAT.
Format
Example
:TRIGger:IIC:WHEN RESTart
:TRIGger:IIC:WHEN?
:TRIGger:IIC:AWIDth
Syntax :TRIGger:IIC:AWIDth <bits>
:TRIGger:IIC:AWIDth?
Description Sets or queries the address width of I2C trigger when the trigger condition is
"ADDRess" or "ADATa".
Parameter Name
<bits>
Return The query returns 7, 8, or 10.
Format
Example :TRIGger:IIC:AWIDth 10
:TRIGger:IIC:AWIDth?
2-202
Type Range
{STARt|RESTart|STOP|NACKnowledge|ADD
Discrete
Ress|DATA|ADATa}
/*Sets the trigger condition to Restart.*/
/*The query returns REST.*/
Type Range
Discrete {7|8|10}
/*Sets the address width to 10.*/
/*The query returns 10.*/
Chapter 2 Command System
Default
STARt
Default
7
MSO7000/DS7000 Programming Guide