ADLINK Technology PCIe-9529, User Manual

Page: 34 / 46

24 Operations
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
analog trigger source. The trigger level can be set by software
with 24-bit resolution, with characteristics as shown.
Table 3-4: Preferred Characteristics for Analog Triggers
Trigger Level
Setting (Hex) Trigger Voltage
(-10V to +10V Range) Trigger Voltage
(-1V to +1V Range)
7FFFFF 9.99999881 V 0.999999881 V
7FFFFE 9.99999762 V 0.999999762 V
1 1.19 μ V 0.119 μ V
0 0V 0V
FFFFFF -1.19 μ V -0.119 μ V
800001 -9.99999881 V -0.999999881 V
800000 -10 V -1 V
Trigger Level
Positive-Slope Trigger Event
Occurs
Negative-Slope Trigger
Event Occurs
Analog
Signal