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9 Press the Auto Setup softkey to automatically set these options for
10 If the high and low thresholds are not set correctly by Auto Setup:
ARINC 429 Triggering
To set up the oscilloscope to capture a ARINC 429 signal, see
ARINC 429 Signals"
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
Agilent InfiniiVision 4000 X-Series Oscilloscopes User's Guide
•
Line B (inverted).
•
Differential (A-B).
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.
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.
on page 452.
to select the serial slot (Serial 1 or Serial 2) on which the ARINC 429
signal is being decoded.
MIL-STD-1553/ARINC 429 Triggering and Serial Decode
27
"Setup for
453
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