Serial bus analysis
R&S
®
RTM3000
334User Manual 1335.9090.02 ─ 09
Threshold High
Sets the upper threshold.
Remote command:
BUS<b>:ARINc:THReshold:HIGH on page 703
Threshold Low
Sets the lower threshold.
Remote command:
BUS<b>:ARINc:THReshold:LOW on page 703
Bit Rate
Sets the bit rate mode to high speed (100 kBit/s), low speed (12.5 kBit/s) or a user
defined value.
Remote command:
BUS<b>:ARINc:BRMode on page 702
BUS<b>:ARINc:BRValue on page 702
Decode Format
Sets the decoding data format for the ARINC 429 bus: Data, SSM+Data, SSM+Data
+SDI, Data+SDI.
Remote command:
BUS<b>:ARINc:DATA:FORMat on page 707
13.9.3 ARINC 429 trigger
Before you set up the trigger, make sure that the bus is configured correctly. See
Chapter 13.9.2, "ARINC 429 configuration", on page 332.
To trigger on ARINC 429 signals:
1. Press the [Protocol] key in the Analysis area of the front panel.
2. Select the bus that is configured for ARINC 429.
3. Select "Trigger".
This selection has several effects:
● Enables decoding, if necessary.
● Sets the "Trigger Type" to "Serial Bus" and the trigger source to the selected
bus.
● Displays the "ARINC Trigger" condition in the dialog box, below the protocol
setup.
4. At "ARINC Trigger", select the required trigger type:
● "Word": word start or word stop
● "Error": combination of protocol errors
● "Label": on a spcified label.
● "Label and Data": combination of data and label condition
ARINC 429 (option R&S
RTM-K7)
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