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Figure 11-3. below-level analog triggering mode, Figure 11-4. above-level analog triggering mode – National Instruments Network Device DAQ S User Manual

Page 136

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Chapter 11

Triggering

NI 6124/6154 User Manual

11-4

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In below-level analog triggering mode, shown in Figure 11-3, the
trigger is generated when the signal value is less than Level.

Figure 11-3. Below-Level Analog Triggering Mode

In above-level analog triggering mode, shown in Figure 11-4, the
trigger is generated when the signal value is greater than Level.

Figure 11-4. Above-Level Analog Triggering Mode

Analog Edge Triggering with Hysteresis—Hysteresis adds a
programmable voltage region above or below the trigger level that an
input signal must pass through before the DAQ device recognizes a
trigger condition, and is often used to reduce false triggering due to
noise or jitter in the signal.

Analog Edge Trigger with Hysteresis (Rising Slope)—When
using hysteresis with a rising slope, you specify a trigger level and
amount of hysteresis. The high threshold is the trigger level; the
low threshold is the trigger level minus the hysteresis.

Level

Analog Comparison Event

Level

Analog Comparison Event