Analog Trigger - Keysight M31 A Series User Manual

1 Theory of Operation: M31/M33XX Digitizers

1. 1. 2 Analog Trigger

The analog trigger block processes the input data and generates a digital trigger that can be used
by any Data Acquisition Block
Figure 3: Analog trigger processor in the M31/M33XXA Digitizers functional block diagram
The user can select the threshold and the trigger mode. The available trigger modes are shown in
Table 5.
Analog Trigger Mode
Programming Definitions
Option Description
Rising Trigger is generated when the input signal is rising and crosses
Edge the threshold
Falling Trigger is generated when the input signal is falling and crosses
Edge the threshold
Both Trigger is generated when the input signal crosses the
Edges threshold, no matter if it is rising or falling
Table 5: Options for the analog trigger (parameter analogTriggerMode in function
channelTriggerConfig (page 47)
Programming Information
Function Name
channelTriggerConfig
6
(Data Acquisition (DAQs) (page
Comments
It configures the analog trigger for each
channel
Keysight M31XXA/M33XXA Digitizer User's Guide
8)).
Name
AIN_RISING_EDGE
AIN_FALLING_EDGE
AIN_BOTH_EDGES
Details
channelTriggerConfig (page 47)
Value
1
2
3