RIGOL MSO/DS2000A Series - Manual (Page 126)

RIGOL Chapter 5 To Trigger the Oscilloscope
5-40 MSO2000A/DS2000A User’s Guide
Trigger Condition:
Press When to select the desired trigger condition.
 Start: trigger when SDA data transitions from high to low while SCL is high.
 Restart: trigger when another start condition occurs before a stop condition.
 Stop: trigger when SDA data transitions from low to high while SCL is high.
 Missing ACK: trigger when the SDA data is high during any acknowledgement of
SCL clock position.
 Address: trigger on the read or write bit when the preset address is met. After
this trigger condition is selected:
--press AddrBits to select “7 bit”, “8 bit” or “10 bit”;
--press Address to set the address value according to the setting in AddrBits
and the ranges are from 0 to 127, from 0 to 255 and from 0 to 1023 respectively;
--press Direction to select “Read”, “Write” or “R/W”.
Note: This setting is not available when AddrBits is set to “8 bit”.
 Data: Find the preset data value on SDA, and trigger on the dump edge of the
SCL of the last bit of the data. After this trigger condition is selected:
--press Byte Length to set the length of the data and the range is from 1 to 5;
--press CurrentBit to select the desired data bit and the range is from 0 to
(Byte Length×8-1);
--press Data to set the data pattern of the current data bit to X, H or L.
--press AllBits to set the data pattern of all the data bits to the data pattern
specified in Data.
 A&D: trigger when the “Address” and “Data” conditions are met at the same
time. After this trigger condition is selected:
--press AddrBits to select “7 bit”, “8 bit” or “10 bit”;
--press Address to set the address value according to the setting in AddrBits
and the ranges are from 0 to 127, from 0 to 255 and from 0 to 1023 respectively;
--press Byte Length to set the length of the data and the range is from 1 to 5;
--press CurrentBit to select the desired data bit and the range is from 0 to
(Byte Length×8-1);
--press Data to set the data pattern of the current data bit to X, H or L.
--press AllBits to set the data pattern of all the data bits to the data pattern
specified in Data.
--press Direction to select “Read”, “Write” or “R/W”.
Note: This setting is not available when AddrBits is set to “8 bit”.