Agilent Technologies DSO-X 4022A, User Manual

Page: 453 / 488

MIL-STD-1553/ARINC 429 Triggering and Serial Decode
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Agilent InfiniiVision 4000 X-Series Oscilloscopes User's Guide 453
• Line B (inverted) .
• Differential (A-B) .
9 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.
10 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 452.
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.