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Chapter 5 To Trigger the Oscilloscope RIGOL
MSO2000A/DS2000A User’s Guide 5-45
Trigger Condition:
Press When to select the desired trigger condition.
CS: while the CS signal is valid, the oscilloscope begins to search for the data
(SDA) satisfying the conditions and triggers when it is found. After this trigger
condition is selected:
--press CS to select the CS signal source. I t can be set to CH1, CH2 or any
channel of D0-D15. For the details, please refer to the introduction in “
Trigger
Source
”. The current trigger source is displayed at the upper-right corner of the
screen.
--press Mode to set the CS mode to (the high level is valid) or (the
low level is valid).
TimeOut: after the clock signal (SCL) remains in idle status for the specified time,
the oscilloscope begins to search for the data (SDA) satisfying the conditions
and triggers when it is found. After this trigger condition is selected, press
TimeOut and use or the inner knob of the navigation knob to adjust the
minimum time of the idle status at a relatively smaller step or turn the outer
knob of the navigation knob to adjust the minimum time of the idle status at a
relatively larger step. The adjustable range is from 100 ns to 1 s.
Data Line Setting:
Press Data to enter the data line setting menu.
Press Data Bits to set the number of bits of the serial data character string. I t
can be set to any integer between 4 and 32.
Press CurrentBit to set the number of the data bit and the range is from 0 to
(value specif ied in Data Bits – 1).
Press Data to set the value of the current bit to H, L or X.
Press AllBits to set all the data bits to the value specified in Data.
Clock Edge:
Press Clock Edge to select the desired clock edge.
: sample the SDA data on the rising edge of the clock signal.
: sample the SDA data on the falling edge of the clock signal.
Trigger Mode:
Press Sweep to open the trigger mode list and select “Auto”, “Normal” or ”Single”.
For the details, please refer to “
Trigger Mode”. The corresponding status light of
the current trigger mode turns on.
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