Operations
25
PCIe-9529
Trigger Export
The PCIe-9529 utilizes SSI Bus Number 5 to act as a System
Synchronization Interface (SSI). With the interconnected bus
provided by SSI Bus, multiple modules are easily synched.
When configured as input the PCIe-9529 serves as a slave
module and can accept trigger signals from SSI Bus Number 5,
asserted from other PCIe-9529 modules. When configured as
output, the PCIe-9529 serves as a master module and can out-
put trigger signals to SSI Bus Number 5.
3.4 Trigger Mode
Two trigger modes applied to trigger sources initiate different data
acquisition timings when a trigger event occurs, as applied to
analog input and output functions.
Post Trigger Mode
If post trigger mode is configured, activity commences once the
following trigger conditions are met:
Z
The analog input channel acquires a programmed num-
ber of samples at a specified sampling rate
Z
The analog output channel outputs pre-defined voltage
at a specified output rate
Figure 3-6: Post-Trigger Acquisition
Delay Trigger Mode
If delay trigger mode is configured, delay time from when the
trigger event asserts to the beginning of the acquisition and
waveform generation can be specified, as shown. Delay time is
