Owon XDS4000 Series User Manual page 58

Ack Lost
Address
Adr
For
mat
Dat
For
mat
Addr / Data
Mode
Holdoff
3. SPI Trigger
Trigger on the specified data when the timeout condition is meet. When using
SPI trigger, you need to specify the SCL and SDA data sources.
In SPI bus trigger mode, the trigger setting information is displayed on bottom
right of the screen, for example,
SPI, CH1 trigger level is 0.00mV.
SPI Trigger menu list:
4.Advanced User Guidebook
Trigger when SDA data transitions from low
Stop
to high while SCL is high.
Trigger when SDA data is high during any
acknowledgement of SCL clock position.
Trigger on the read or write bit when the
preset address is met.
Set Address Bits to be "7"、"8"or"10".
Addr
Bits
Set address according to the preset
Address
address bits, address range is 0-127,
0-255, 0-1023 respectively.
Set Data Direction to be Read or Write.
Direction
Note: The set is not available when Address
bits is set to "8".
Search for the preset data value on SDA
Data and trigger on the dump edge of SCL of the
last bit of the data area.
Byte Set data byte length, available range 1-5
length
CurrentBit
bytes. Adjust M knob or click
Data
byte length.
Select the data bit, ranges from 0 to (byte
length*8 -1).
Set data to be H, L or X (H or L)
All Bits
Set all the data bits to be the specified value
in Data
Trigger when Address and Data conditions
are met at the same time .
Auto Acquire waveform even no trigger occurred
Normal Acquire waveform when trigger occurred
Single When trigger occurs, acquire one waveform
then stop
52
, indicates that trigger type is
to set