Rohde & Schwarz 1335.8794.02, User Manual, Page: 334 / 861

Serial bus analysis
R&S
®
RTM3000
334 User 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)