
64 Operation Theory
Figure 4-31: Analog Trigger Block Diagram
The trigger signal is generated when the analog trigger condition
is satisfied. There are five analog trigger conditions in the DAQ-/
DAQe-/PXI-2016/2010/2006/2005 card. The DAQ-/DAQe-/PXI-
2016/2010/2006/2005 card uses two threshold voltages,
Low_Threshold and High_Threshold to build the five different trig-
ger conditions. You could configure the trigger conditions easily by
software.
Trigger level digital setting Trigger voltage
0xFF 9.92V
0xFE 9.84V
--- ---
0x81 0.08V
0x80 0
0x7F -0.08V
--- ---
0x01 -9.92V
Table 4-7: Analog Trigger SRC1 (EXTATRIG) Ideal Transfer Characteristic
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