MIL-STD-1553/ARINC 429 Triggering and Serial Decode 27
Keysight InfiniiVision 3000 X-Series Oscilloscopes User's Guide 407
• Line B (inverted).
• Differential (A-B).
11 Press the Auto Setup softkey to automatically set these options for decoding and
triggering on ARINC 429 signals:
• High Trigger Threshold: 3.0 V.
• Low Trigger Threshold: -3.0 V.
• Noise Reject: Off.
• Probe Attenuation: 10.0.
• Vertical Scale: 4 V/div.
• Serial Decode: On.
• Base: Hex.
• Word Format: Label/SDI/Data/SSM.
• Trigger: currently active serial bus.
• Trigger Mode: Word Start.
12 If the high and low thresholds are not set correctly by Auto Setup:
• Press the High Threshold softkey; then, turn the Entry knob to set the high
trigger threshold voltage level.
• Press the Low Threshold softkey; then, turn the Entry knob to set the low
trigger threshold voltage level.
The threshold voltage levels are used in decoding and will become the trigger
levels when the trigger type is set to the selected serial decode slot.
ARINC 429 Triggering
To set up the oscilloscope to capture a ARINC 429 signal, see "Setup for
ARINC 429 Signals" on page 406.
After setting up the oscilloscope to capture a ARINC 429 signal:
1 Press [Trigger].
2 In the Trigger Menu, press the Trigger softkey; then, turn the Entry knob to
select the serial slot (Serial 1 or Serial 2) on which the ARINC 429 signal is
being decoded.
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