ADLINK PXIe-9529 - Manual (Page 30)

20 Operations
signals from one of buses 0 through 7. When configured as
output, the PXIe-9529 serves as a master module and can out-
put trigger signals to the PXI Trigger Bus Numbers 0 through 7.
Analog Trigger
The PXIe-9529 analog trigger circuitry can be configured to
monitor one analog input channel from which data is acquired.
Selection of an analog input channel as the analog trigger
channel does not influence the input channel acquisition opera-
tion. The analog trigger circuit generates an internal digital trig-
ger signal based on the condition between the analog signal
and the defined trigger level.
Analog trigger conditions are as follows:
Z
Positive-slope trigger: The trigger event occurs when the
analog input signal changes from a voltage lower than
the specified trigger level to a voltage exceeding the
specified trigger level.
Z Negative-slope trigger: The trigger event occurs when
the analog input signal changes from a voltage exceed-
ing the specified trigger level to a voltage lower than the
specified trigger level.
Figure 3-5: Analog Trigger Conditions
Trigger signal can be chosen from among CH0, CH1,
CH2,CH3, CH4, CH5, CH6 and CH7 during use of an external
Trigger Level
Positive-Slope Trigger Event
Occurs
Negative-Slope Trigger
Event Occurs
Analog
Signal